/* ==========================================================================
   AAM TECHNOLOGIES - DESIGN TOKENS & SYSTEM STYLES
   Low-Carbon, High-Performance EPC Infrastructure Platform
   ========================================================================== */

/*
   DESIGN TOKEN RATIONALE:
   -----------------------
   - Base Palette: Deep Navy & Graphite Slate (#0B1220 to #111827) reduces power consumption on OLED displays.
   - Accent Color: AAM Signature Crimson Red (#B51A1E / #C52227) matching the official AAM Technologies logo.
     Evokes industrial strength, engineering precision, and high-voltage authority, with high contrast against the dark base.
   - Secondary Accent: Industrial Cyan (#06B6D4) for water systems and digital twin telemetry.
   - Typography: Native System Font Stack (-apple-system, Segoe UI, Roboto) eliminates external font HTTP requests.
*/

:root {
  /* Color Palette - AAM Brand Red & Industrial System */
  --color-bg: #0b1220;
  --color-surface: #111827;
  --color-surface-card: #182235;
  --color-surface-hover: #1f2d47;
  --color-border: #2e3d58;
  --color-border-subtle: #1e2c45;
  
  --color-text: #ffffff;
  --color-text-muted: #cbd5e1;
  --color-text-dim: #94a3b8;
  
  --color-brand-red: #b51a1e;
  --color-accent: #c52227;
  --color-accent-hover: #9c1519;
  --color-accent-dark: #841014;
  --color-accent-text: #f87171;
  --color-accent-light: rgba(197, 34, 39, 0.14);
  --color-accent-border: rgba(197, 34, 39, 0.38);
  --color-accent-glow: rgba(197, 34, 39, 0.28);
  
  --color-cyan: #06b6d4;
  --color-cyan-light: rgba(6, 182, 212, 0.12);
  --color-cyan-border: rgba(6, 182, 212, 0.35);
  --color-cyan-glow: rgba(6, 182, 212, 0.25);

  --color-green: #10b981;
  --color-green-light: rgba(16, 185, 129, 0.12);
  --color-green-border: rgba(16, 185, 129, 0.35);
  --color-green-glow: rgba(16, 185, 129, 0.25);

  --color-purple: #a855f7;
  --color-purple-light: rgba(168, 85, 247, 0.12);
  --color-purple-border: rgba(168, 85, 247, 0.35);
  --color-purple-glow: rgba(168, 85, 247, 0.25);

  --color-pink: #f43f5e;
  --color-pink-light: rgba(244, 63, 94, 0.12);
  --color-pink-border: rgba(244, 63, 94, 0.35);
  --color-pink-glow: rgba(244, 63, 94, 0.25);

  /* Typography */
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  
  /* Font Sizes - Fluid Type Scale */
  --fs-xs: 0.75rem;     /* 12px */
  --fs-sm: 0.875rem;    /* 14px */
  --fs-base: 1rem;      /* 16px */
  --fs-md: 1.125rem;    /* 18px */
  --fs-lg: 1.25rem;     /* 20px */
  --fs-xl: 1.5rem;      /* 24px */
  --fs-2xl: 2rem;       /* 32px */
  --fs-3xl: clamp(2.25rem, 4vw, 3.25rem); /* 36px-52px */
  --fs-hero: clamp(2.5rem, 5vw, 4rem);    /* 40px-64px */

  /* Spacing Scale */
  --space-2xs: 0.25rem; /* 4px */
  --space-xs: 0.5rem;   /* 8px */
  --space-sm: 0.75rem;  /* 12px */
  --space-md: 1rem;     /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;     /* 32px */
  --space-2xl: 3rem;    /* 48px */
  --space-3xl: 4.5rem;  /* 72px */

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  /* Layout */
  --container-max: 1680px;
  --header-height: 72px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset & Sustainability Optimization */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

img, svg, video, canvas, iframe {
  max-width: 100%;
  height: auto;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-system);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--color-bg);
  width: 100%;
}

/* Accessibility - Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-accent);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid #fff;
}

/* Focus States */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Layout Container - Full Width Expansion */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 3.5vw, 3.5rem);
  padding-right: clamp(1rem, 3.5vw, 3.5rem);
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text, #ffffff);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

p {
  color: var(--color-text-muted, #cbd5e1);
}

.text-accent {
  color: var(--color-accent);
}

.text-cyan {
  color: var(--color-cyan);
}

.text-purple {
  color: var(--color-purple);
}

.text-green {
  color: var(--color-green);
}

.text-pink {
  color: var(--color-pink);
}

.text-amber {
  color: #fbbf24;
}

/* Gradient Text Utilities */
.text-gradient-gold,
.text-gradient-red,
.text-gradient-brand {
  background: linear-gradient(135deg, #c52227 0%, #ef4444 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, #38bdf8 0%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-purple {
  background: linear-gradient(135deg, #c084fc 0%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-green {
  background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-pink {
  background: linear-gradient(135deg, #fb7185 0%, #f43f5e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-multi {
  background: linear-gradient(135deg, #c52227 0%, #06b6d4 33%, #a855f7 66%, #f43f5e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border: 1px solid var(--color-accent-border);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
  box-shadow: 0 0 15px rgba(197, 34, 39, 0.15);
}

.section-title {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-md);
  color: #ffffff !important;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

.section-subtitle {
  font-size: var(--fs-md);
  color: #cbd5e1 !important;
  max-width: 44rem;
  margin-bottom: var(--space-2xl);
  line-height: 1.6;
}

.text-center {
  text-align: center;
}

.center-block {
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-size: var(--fs-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
  font-weight: 700;
}

.btn-primary:hover, .btn-primary:focus-visible {
  background-color: var(--color-accent-hover);
  box-shadow: 0 0 20px var(--color-accent-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--color-surface-card);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover, .btn-secondary:focus-visible {
  background-color: var(--color-surface-hover);
  border-color: var(--color-accent-border);
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* Badge Component */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
  background-color: var(--color-border-subtle);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.badge-accent {
  background-color: var(--color-accent-light);
  color: var(--color-accent-text);
  border-color: var(--color-accent-border);
}

.badge-cyan {
  background-color: var(--color-cyan-light);
  color: var(--color-cyan);
  border-color: rgba(6, 182, 212, 0.3);
}

.badge-green {
  background-color: var(--color-green-light);
  color: var(--color-green);
  border-color: rgba(16, 185, 129, 0.3);
}

.badge-purple {
  background-color: var(--color-purple-light);
  color: #c084fc;
  border-color: rgba(168, 85, 247, 0.35);
}

.badge-pink {
  background-color: var(--color-pink-light);
  color: #fb7185;
  border-color: rgba(244, 63, 94, 0.35);
}

/* ==========================================================================
   HEADER & NAVIGATION (GLASS-MORPHISM & SHRINK ON SCROLL)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: rgba(11, 18, 32, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: height 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-header.is-shrunk {
  height: 58px;
  background-color: rgba(8, 14, 26, 0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: rgba(245, 158, 11, 0.25);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 15px rgba(245, 158, 11, 0.1);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-md);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-size: var(--fs-xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  flex-shrink: 0;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-header.is-shrunk .brand-logo {
  transform: scale(0.92);
}

.brand-logo-img {
  height: 42px;
  width: auto;
  max-width: 175px;
  object-fit: contain;
  display: block;
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.brand-logo:hover .brand-logo-img {
  filter: drop-shadow(0 0 10px rgba(197, 34, 39, 0.45));
}

.footer-logo-img {
  height: 48px;
  max-width: 195px;
}

.loader-logo-img {
  height: 44px;
  width: auto;
  margin: 0 auto;
  display: block;
  filter: drop-shadow(0 0 14px rgba(197, 34, 39, 0.5));
}

.brand-aam {
  color: var(--color-accent);
}

.brand-tech {
  color: var(--color-text);
  font-weight: 300;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(0.4rem, 1.1vw, 1.25rem);
  list-style: none;
  flex-wrap: nowrap;
}

.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  position: relative;
  padding: 0.35rem 0.4rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav-link:hover, .nav-link:focus-visible {
  color: var(--color-text);
}

.nav-link:hover::after, .nav-link:focus-visible::after {
  width: 100%;
}

/* Technical Services Dropdown Menu */
.nav-item-dropdown {
  position: relative;
}

.dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
}

.dropdown-chevron {
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-item-dropdown:hover .dropdown-chevron,
.nav-item-dropdown.is-open .dropdown-chevron {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  width: max-content;
  min-width: 360px;
  max-width: 420px;
  background: rgba(13, 21, 38, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0.65rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7), 0 0 25px rgba(245, 158, 11, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1100;
}

.site-header.is-shrunk .nav-dropdown-menu {
  top: calc(100% - 2px);
}

.nav-item-dropdown:hover .nav-dropdown-menu,
.nav-item-dropdown:focus-within .nav-dropdown-menu,
.nav-item-dropdown.is-open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(6px);
}

.dropdown-grid {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  border: 1px solid transparent;
}

.dropdown-item:hover,
.dropdown-item:focus-visible {
  background-color: rgba(255, 255, 255, 0.06);
  border-color: rgba(245, 158, 11, 0.35);
  transform: translateX(3px);
}

.dropdown-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}

.dropdown-text {
  display: flex;
  flex-direction: column;
}

.dropdown-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.25;
}

.dropdown-desc {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  line-height: 1.2;
}

.nav-cta {
  display: none;
  flex-shrink: 0;
}

.nav-cta .btn {
  padding: 0.55rem 1.15rem;
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
  transition: all var(--transition-fast);
}

.site-header.is-shrunk .nav-cta .btn {
  padding: 0.42rem 0.95rem;
  font-size: 0.78rem;
}

.mobile-cta {
  display: none;
}

@media (min-width: 1024px) {
  .nav-cta {
    display: inline-flex;
  }
  .mobile-cta {
    display: none !important;
  }
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }
}

/* Mobile Nav Styles */
@media (max-width: 1023px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--space-xl) var(--space-md);
    gap: var(--space-md);
    transform: translateY(-150%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  }

  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .mobile-cta {
    display: flex;
    width: 100%;
    margin-top: var(--space-sm);
  }
}

/* ==========================================================================
   SECTION SEPARATORS & ALTERNATING PATTERNS
   ========================================================================== */
.section-divider {
  position: relative;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(245, 158, 11, 0.25) 30%, rgba(6, 182, 212, 0.3) 50%, rgba(245, 158, 11, 0.25) 70%, transparent 100%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
}

.section-divider::after {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-bg);
  border: 1.5px solid var(--color-accent);
  transform: rotate(45deg);
  box-shadow: 0 0 10px var(--color-accent-glow);
}

.bg-alt-dark {
  background: linear-gradient(180deg, rgba(13, 21, 38, 0.95) 0%, rgba(10, 16, 29, 0.98) 100%);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.bg-primary-dark {
  background: var(--color-bg);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  position: relative;
  padding-top: calc(var(--header-height) + var(--space-2xl));
  padding-bottom: var(--space-3xl);
  overflow: hidden;
  background: radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.12) 0%, transparent 50%),
              radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.10) 0%, transparent 50%),
              radial-gradient(circle at 50% 50%, rgba(168, 85, 247, 0.08) 0%, transparent 60%),
              var(--color-bg);
}

.hero-bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.2;
}

.hero-container {
  position: relative;
  z-index: 10;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-3xl);
  }
}

.hero-text-block {
  display: flex;
  flex-direction: column;
}

.hero-title {
  font-size: var(--fs-hero);
  font-weight: 800;
  margin-bottom: var(--space-md);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: var(--fs-lg);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.hero-pills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: var(--space-2xl);
}

.hero-pill-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: rgba(30, 44, 69, 0.6);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.hero-pill-item[data-v="energy"] {
  background: var(--color-accent-light);
  color: #ef4444;
  border-color: var(--color-accent-border);
}

.hero-pill-item[data-v="power"] {
  background: rgba(168, 85, 247, 0.12);
  color: #c084fc;
  border-color: rgba(168, 85, 247, 0.35);
}

.hero-pill-item[data-v="dc"] {
  background: rgba(6, 182, 212, 0.12);
  color: #38bdf8;
  border-color: rgba(6, 182, 212, 0.35);
}

.hero-pill-item[data-v="water"] {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.35);
}

.hero-pill-item[data-v="digital"] {
  background: rgba(244, 63, 94, 0.12);
  color: #fb7185;
  border-color: rgba(244, 63, 94, 0.35);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
}

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
}

/* Hero Telemetry HUD Card */
.hero-telemetry-card {
  background: linear-gradient(135deg, rgba(17, 24, 39, 0.85) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

.hero-telemetry-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-cyan), var(--color-green));
}

.telemetry-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border-subtle);
}

.telemetry-live-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--color-green);
  letter-spacing: 0.05em;
  font-family: var(--font-mono, monospace);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-green);
  box-shadow: 0 0 10px var(--color-green);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.6; }
  100% { transform: scale(0.95); opacity: 1; }
}

.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.telemetry-stat {
  background: rgba(11, 18, 32, 0.78);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  display: flex;
  flex-direction: column;
}

.telemetry-val {
  font-size: var(--fs-xl);
  font-weight: 800;
  line-height: 1.1;
  font-family: var(--font-mono, monospace);
}

.telemetry-lbl {
  font-size: var(--fs-xs);
  color: #cbd5e1;
  margin-top: 0.25rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.progress-bar-sm {
  width: 100%;
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill-accent { height: 100%; background: var(--color-accent); border-radius: 2px; }
.progress-fill-cyan { height: 100%; background: var(--color-cyan); border-radius: 2px; }
.progress-fill-green { height: 100%; background: var(--color-green); border-radius: 2px; }
.progress-fill-amber { height: 100%; background: #f59e0b; border-radius: 2px; }

.telemetry-footer-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
}

.status-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  color: #ffffff;
}

.status-sub {
  font-size: 0.75rem;
  color: #cbd5e1;
}

.hero-scroll-indicator {
  margin-top: var(--space-2xl);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-weight: 600;
  text-decoration: none;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color var(--transition-fast);
}

.hero-scroll-indicator:hover {
  color: var(--color-accent);
}

.hero-scroll-indicator svg {
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(6px); }
  60% { transform: translateY(3px); }
}

/* ==========================================================================
   STATS BAR
   ========================================================================== */
.stats-bar {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-xl);
}

@media (min-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  display: flex;
  flex-direction: column;
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-md);
  transition: transform var(--transition-fast);
}

.stat-item:hover {
  transform: translateY(-2px);
}

.stat-item:nth-child(1) { border-left-color: var(--color-accent); }
.stat-item:nth-child(1) .stat-value { background: linear-gradient(135deg, #c52227, #ef4444); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.stat-item:nth-child(2) { border-left-color: #a855f7; }
.stat-item:nth-child(2) .stat-value { background: linear-gradient(135deg, #c084fc, #a855f7); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.stat-item:nth-child(3) { border-left-color: #06b6d4; }
.stat-item:nth-child(3) .stat-value { background: linear-gradient(135deg, #38bdf8, #06b6d4); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.stat-item:nth-child(4) { border-left-color: #10b981; }
.stat-item:nth-child(4) .stat-value { background: linear-gradient(135deg, #34d399, #10b981); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.stat-value {
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
  font-weight: 500;
}

/* ==========================================================================
   MISSION SECTION (3 VISUAL PILLARS)
   ========================================================================== */
.mission-section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.mission-pillars-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .mission-pillars-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.mission-pillar-card {
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-card) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.mission-pillar-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent-border);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.mission-pillar-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  border: 1px solid var(--color-accent-border);
}

.mission-pillar-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.mission-pillar-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

/* ==========================================================================
   INTERACTIVE TURNKEY ESTIMATOR CONSOLE
   ========================================================================== */
.estimator-section {
  padding: var(--space-3xl) 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.4) 0%, rgba(11, 18, 32, 0.9) 100%);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.estimator-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: 0 20px 45px rgba(0,0,0,0.4);
}

@media (min-width: 1024px) {
  .estimator-card {
    padding: var(--space-2xl);
  }
}

.estimator-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 1024px) {
  .estimator-grid {
    grid-template-columns: 1fr 1.15fr;
    gap: var(--space-3xl);
  }
}

.vertical-picker-tabs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

.estimator-v-tab {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.85rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
}

.estimator-v-tab:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
  border-color: var(--color-border-subtle);
}

.estimator-v-tab.is-active {
  font-weight: 700;
}

.estimator-v-tab[data-v="solar"].is-active {
  background: var(--color-accent-light);
  color: #ef4444;
  border-color: var(--color-accent);
  box-shadow: 0 0 12px var(--color-accent-glow);
}

.estimator-v-tab[data-v="grid"].is-active {
  background: var(--color-purple-light);
  color: #c084fc;
  border-color: var(--color-purple);
  box-shadow: 0 0 12px var(--color-purple-glow);
}

.estimator-v-tab[data-v="dc"].is-active {
  background: var(--color-cyan-light);
  color: #38bdf8;
  border-color: var(--color-cyan);
  box-shadow: 0 0 12px var(--color-cyan-glow);
}

.estimator-v-tab[data-v="water"].is-active {
  background: var(--color-green-light);
  color: #34d399;
  border-color: var(--color-green);
  box-shadow: 0 0 12px var(--color-green-glow);
}

.slider-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.slider-val-badge {
  font-family: var(--font-mono, monospace);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-accent-text);
  background: var(--color-accent-light);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-accent-border);
}

.estimator-slider {
  width: 100%;
  accent-color: var(--color-accent);
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  cursor: pointer;
}

.slider-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-top: 0.35rem;
}

.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-system);
  font-size: 15px;
  min-height: 44px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23cbd5e1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.1em;
  padding-right: 2.5rem;
  transition: border-color var(--transition-fast);
}

.form-select:focus {
  border-color: var(--color-accent);
  outline: none;
}

.form-select option {
  background-color: #111827;
  color: #ffffff;
  padding: 0.5rem;
}

.estimator-results-hud {
  background: rgba(11, 18, 32, 0.7);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
}

.hud-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-border-subtle);
}

.hud-code {
  font-size: 0.75rem;
  font-family: var(--font-mono, monospace);
  color: var(--color-text-muted);
  font-weight: 600;
}

.hud-metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.hud-metric-card {
  background: rgba(30, 44, 69, 0.4);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.85rem;
  display: flex;
  flex-direction: column;
}

.hud-metric-label {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hud-metric-val {
  font-size: var(--fs-lg);
  font-weight: 800;
  line-height: 1.2;
  margin: 0.2rem 0;
  font-family: var(--font-mono, monospace);
}

.hud-metric-sub {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

.hud-deliverables-box {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  margin-top: auto;
}

.est-deliverables-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.est-deliverables-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* ==========================================================================
   PENTAGONAL ARCHITECTURE (INTERACTIVE DIAGRAM)
   ========================================================================== */
.pentagon-section {
  padding: var(--space-3xl) 0;
  background-color: rgba(17, 24, 39, 0.5);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.pentagon-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .pentagon-wrapper {
    grid-template-columns: 1fr 1fr;
  }
}

.pentagon-diagram-container {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  position: relative;
}

.pentagon-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Interactive SVG Nodes */
.node-group {
  cursor: pointer;
  transform-box: fill-box;
  transform-origin: center;
  transition: transform var(--transition-normal), filter var(--transition-normal);
}

.node-group:hover,
.node-group:focus-visible {
  outline: none;
  transform: scale(1.12);
}

.node-orbit-ring {
  fill: none;
  stroke: var(--color-border);
  stroke-width: 1.5px;
  stroke-dasharray: 6 5;
  transform-box: fill-box;
  transform-origin: center;
  animation: nodeRingRotate 20s linear infinite;
  opacity: 0.5;
  transition: stroke var(--transition-fast), opacity var(--transition-fast), stroke-width var(--transition-fast);
}

.node-group:hover .node-orbit-ring,
.node-group.is-active .node-orbit-ring,
.node-group:focus-visible .node-orbit-ring {
  stroke: var(--color-accent);
  stroke-width: 2px;
  opacity: 1;
  animation-duration: 10s;
}

@keyframes nodeRingRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.node-circle {
  fill: var(--color-surface-card);
  stroke: var(--color-border);
  stroke-width: 2px;
  cursor: pointer;
  transition: fill var(--transition-fast), stroke var(--transition-fast), filter var(--transition-fast);
}

/* Domain Specific Node Color Customizations */
.node-group[data-node="energy"]:hover .node-circle,
.node-group[data-node="energy"].is-active .node-circle {
  stroke: var(--color-accent);
  filter: drop-shadow(0 0 12px var(--color-accent-glow));
}
.node-group[data-node="energy"]:hover .node-orbit-ring,
.node-group[data-node="energy"].is-active .node-orbit-ring {
  stroke: var(--color-accent);
}

.node-group[data-node="power"]:hover .node-circle,
.node-group[data-node="power"].is-active .node-circle {
  stroke: var(--color-purple);
  filter: drop-shadow(0 0 12px var(--color-purple-glow));
}
.node-group[data-node="power"]:hover .node-orbit-ring,
.node-group[data-node="power"].is-active .node-orbit-ring {
  stroke: var(--color-purple);
}

.node-group[data-node="datacentre"]:hover .node-circle,
.node-group[data-node="datacentre"].is-active .node-circle {
  stroke: var(--color-cyan);
  filter: drop-shadow(0 0 12px var(--color-cyan-glow));
}
.node-group[data-node="datacentre"]:hover .node-orbit-ring,
.node-group[data-node="datacentre"].is-active .node-orbit-ring {
  stroke: var(--color-cyan);
}

.node-group[data-node="water"]:hover .node-circle,
.node-group[data-node="water"].is-active .node-circle {
  stroke: var(--color-green);
  filter: drop-shadow(0 0 12px var(--color-green-glow));
}
.node-group[data-node="water"]:hover .node-orbit-ring,
.node-group[data-node="water"].is-active .node-orbit-ring {
  stroke: var(--color-green);
}

.node-group[data-node="digital"]:hover .node-circle,
.node-group[data-node="digital"].is-active .node-circle {
  stroke: var(--color-pink);
  filter: drop-shadow(0 0 12px var(--color-pink-glow));
}
.node-group[data-node="digital"]:hover .node-orbit-ring,
.node-group[data-node="digital"].is-active .node-orbit-ring {
  stroke: var(--color-pink);
}

.node-group:focus-visible .node-circle {
  stroke: #ffffff;
  stroke-width: 3px;
}

.node-text {
  fill: var(--color-text);
  font-size: 13px;
  font-weight: 700;
  text-anchor: middle;
  pointer-events: none;
  font-family: var(--font-system);
}

.node-subtext {
  fill: var(--color-text-muted);
  font-size: 11px;
  font-weight: 500;
  text-anchor: middle;
  pointer-events: none;
  font-family: var(--font-system);
}

.hub-circle {
  fill: var(--color-surface);
  stroke: var(--color-accent);
  stroke-width: 3px;
  filter: drop-shadow(0 0 12px var(--color-accent-glow));
}

.hub-text-title {
  fill: var(--color-accent-text);
  font-size: 15px;
  font-weight: 800;
  text-anchor: middle;
  font-family: var(--font-system);
}

.hub-text-sub {
  fill: var(--color-text-muted);
  font-size: 10px;
  text-anchor: middle;
  font-family: var(--font-system);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.connecting-line {
  stroke: var(--color-border);
  stroke-width: 1.5px;
  stroke-dasharray: 4 4;
  transition: stroke var(--transition-fast), stroke-width var(--transition-fast);
}

.node-group.is-active ~ .connecting-line,
.connecting-line.is-active {
  stroke: var(--color-accent);
  stroke-width: 2.5px;
  stroke-dasharray: none;
}

/* Pentagon Detail Display Panel */
.pentagon-detail-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  position: relative;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.pentagon-detail-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-accent);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.vertical-node-title {
  font-size: var(--fs-xl);
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.vertical-node-desc {
  font-size: var(--fs-base);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.vertical-node-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
}

/* Fallback Card Grid for Vertical Mobile/Accessibility */
.verticals-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}

@media (min-width: 640px) {
  .verticals-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .verticals-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.vertical-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.vertical-card:hover, .vertical-card.is-selected {
  border-color: var(--color-accent);
  background-color: var(--color-surface-hover);
  transform: translateY(-2px);
}

.vertical-card-title {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2xs);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.vertical-card-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   SERVICES SECTION (6 CARDS)
   ========================================================================== */
.services-section {
  padding: var(--space-3xl) 0;
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-border);
  transition: background var(--transition-fast);
}

.service-card:nth-child(1)::before { background: linear-gradient(90deg, #c52227, #ef4444); }
.service-card:nth-child(2)::before { background: linear-gradient(90deg, #a855f7, #c084fc); }
.service-card:nth-child(3)::before { background: linear-gradient(90deg, #06b6d4, #38bdf8); }
.service-card:nth-child(4)::before { background: linear-gradient(90deg, #10b981, #34d399); }
.service-card:nth-child(5)::before { background: linear-gradient(90deg, #f43f5e, #fb7185); }
.service-card:nth-child(6)::before { background: linear-gradient(90deg, #c52227, #06b6d4, #a855f7); }

.service-card:nth-child(1):hover { border-color: rgba(197, 34, 39, 0.5); box-shadow: 0 12px 30px rgba(197, 34, 39, 0.15); transform: translateY(-4px); }
.service-card:nth-child(2):hover { border-color: rgba(168, 85, 247, 0.5); box-shadow: 0 12px 30px rgba(168, 85, 247, 0.15); transform: translateY(-4px); }
.service-card:nth-child(3):hover { border-color: rgba(6, 182, 212, 0.5); box-shadow: 0 12px 30px rgba(6, 182, 212, 0.15); transform: translateY(-4px); }
.service-card:nth-child(4):hover { border-color: rgba(16, 185, 129, 0.5); box-shadow: 0 12px 30px rgba(16, 185, 129, 0.15); transform: translateY(-4px); }
.service-card:nth-child(5):hover { border-color: rgba(244, 63, 94, 0.5); box-shadow: 0 12px 30px rgba(244, 63, 94, 0.15); transform: translateY(-4px); }
.service-card:nth-child(6):hover { border-color: rgba(197, 34, 39, 0.5); box-shadow: 0 12px 30px rgba(197, 34, 39, 0.15); transform: translateY(-4px); }

.service-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.service-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-light);
  border: 1px solid var(--color-accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
}

.service-card:nth-child(1) .service-icon-box { background: var(--color-accent-light); border-color: var(--color-accent-border); color: #ef4444; }
.service-card:nth-child(2) .service-icon-box { background: var(--color-purple-light); border-color: var(--color-purple-border); color: #c084fc; }
.service-card:nth-child(3) .service-icon-box { background: var(--color-cyan-light); border-color: var(--color-cyan-border); color: #38bdf8; }
.service-card:nth-child(4) .service-icon-box { background: var(--color-green-light); border-color: var(--color-green-border); color: #34d399; }
.service-card:nth-child(5) .service-icon-box { background: var(--color-pink-light); border-color: var(--color-pink-border); color: #fb7185; }
.service-card:nth-child(6) .service-icon-box { background: var(--color-accent-light); border-color: var(--color-accent-border); color: #ef4444; }

.service-title {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-xs);
}

.service-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.service-bullets {
  list-style: none;
  margin-top: auto;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.service-bullet-item {
  font-size: var(--fs-xs);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-bullet-item svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-accent);
  text-decoration: none;
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-top: var(--space-md);
  transition: gap var(--transition-fast);
}

.service-link:hover {
  gap: 0.6rem;
}

/* ==========================================================================
   GOVERNMENT PROJECTS (TRUST & CREDIBILITY)
   ========================================================================== */
.gov-section {
  padding: var(--space-3xl) 0;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.gov-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .gov-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .gov-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.gov-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: border-color var(--transition-fast);
}

.gov-card:hover {
  border-color: var(--color-cyan);
}

.gov-badge-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background-color: var(--color-cyan-light);
  color: var(--color-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.gov-card-title {
  font-size: var(--fs-md);
  margin-bottom: var(--space-xs);
}

.gov-card-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   EPC PROCESS SECTION (4-STEP)
   ========================================================================== */
.process-section {
  padding: var(--space-3xl) 0;
}

.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  position: relative;
}

@media (min-width: 768px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .process-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.process-step {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: relative;
  transition: all var(--transition-fast);
}

.process-step:hover {
  border-color: var(--color-accent-border);
  transform: translateY(-2px);
}

.process-number {
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.process-step-title {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-xs);
}

.process-step-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   SOLAR & BESS SPEC DEEP-DIVE
   ========================================================================== */
.spec-section {
  padding: var(--space-3xl) 0;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.spec-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 1024px) {
  .spec-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.spec-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1rem, 2.5vw, 1.75rem);
  overflow-x: auto;
}

.spec-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-lg);
}

.spec-title {
  font-size: var(--fs-xl);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
}

.spec-table tr {
  border-bottom: 1px solid var(--color-border-subtle);
}

.spec-table tr:last-child {
  border-bottom: none;
}

.spec-table th, .spec-table td {
  padding: var(--space-sm) 0;
  text-align: left;
  font-size: var(--fs-sm);
}

.spec-table th {
  color: var(--color-text-muted);
  font-weight: 500;
  width: 40%;
}

.spec-table td {
  color: var(--color-text);
  font-weight: 600;
}

/* ==========================================================================
   CONTACT SECTION & FORM
   ========================================================================== */
.contact-section {
  padding: var(--space-3xl) 0;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 1024px) {
  .contact-wrapper {
    grid-template-columns: 1fr 1.2fr;
  }
}

.contact-info-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-details-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact-icon-box {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail-title {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
}

.contact-detail-val {
  font-size: var(--fs-base);
  color: var(--color-text);
  font-weight: 500;
}

.contact-form {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 640px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2xs);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-system);
  font-size: 16px;
  min-height: 44px;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-accent);
  outline: none;
}

.form-control::placeholder {
  color: #94a3b8;
  opacity: 1;
}

.form-control option {
  background-color: #111827;
  color: #ffffff;
  padding: 0.5rem;
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-feedback {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  font-size: var(--fs-sm);
  display: none;
}

.form-feedback.is-error {
  display: block;
  background-color: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}

.form-feedback.is-success {
  display: block;
  background-color: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #6ee7b7;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background-color: #070c17;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-xl);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-md);
  max-width: 22rem;
  line-height: 1.6;
}

.footer-col-title {
  font-size: var(--fs-sm);
  color: var(--color-text);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid var(--color-border-subtle);
  padding-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

.sustainability-note {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-green);
}

.sustainability-note a {
  color: var(--color-green);
  text-decoration: underline;
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS (IntersectionObserver)
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .hero-scroll-indicator svg {
    animation: none;
  }
}

/* ==========================================================================
   LOW-CARBON APP LOADING SPINNER
   ========================================================================== */
.app-loader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background-color: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 350ms ease-out, visibility 350ms ease-out;
}

.app-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.85rem;
}

.loader-spinner-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
}

.loader-spinner {
  width: 68px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.loader-percent {
  position: absolute;
  font-size: var(--fs-xs);
  font-weight: 800;
  color: var(--color-accent);
  font-family: var(--font-mono, monospace);
  letter-spacing: -0.02em;
}

.loader-brand {
  font-size: var(--fs-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.loader-status {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* ==========================================================================
   FEATURED PROJECTS SECTION
   ========================================================================== */
.projects-section {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

/* Responsive Masonry/Compact Project Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
  align-items: start;
}

@media (min-width: 640px) and (max-width: 1023px) {
  .projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-md);
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-xl);
  }
}

.project-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1rem, 2.2vw, 1.6rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, box-shadow;
}

/* Hover Lifting & Glowing Filter Effects */
.project-card:hover {
  transform: translateY(-8px) scale(1.012);
  border-color: rgba(245, 158, 11, 0.55);
  box-shadow: 0 22px 45px -10px rgba(0, 0, 0, 0.65), 0 0 32px rgba(245, 158, 11, 0.22);
  filter: drop-shadow(0 8px 16px rgba(245, 158, 11, 0.12));
}

.project-card:nth-child(1):hover {
  border-color: rgba(245, 158, 11, 0.6);
  box-shadow: 0 22px 45px -10px rgba(0, 0, 0, 0.65), 0 0 32px rgba(245, 158, 11, 0.22);
  filter: drop-shadow(0 8px 16px rgba(245, 158, 11, 0.12));
}

.project-card:nth-child(2):hover {
  border-color: rgba(6, 182, 212, 0.6);
  box-shadow: 0 22px 45px -10px rgba(0, 0, 0, 0.65), 0 0 32px rgba(6, 182, 212, 0.22);
  filter: drop-shadow(0 8px 16px rgba(6, 182, 212, 0.12));
}

.project-card:nth-child(3):hover {
  border-color: rgba(16, 185, 129, 0.6);
  box-shadow: 0 22px 45px -10px rgba(0, 0, 0, 0.65), 0 0 32px rgba(16, 185, 129, 0.22);
  filter: drop-shadow(0 8px 16px rgba(16, 185, 129, 0.12));
}

.project-card-badge-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
  gap: 0.5rem;
  flex-wrap: wrap;
}

.project-location-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

.project-title {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: var(--spacing-sm);
}

.project-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.75rem;
  margin-bottom: var(--spacing-sm);
}

@media (max-width: 420px) {
  .project-meta-grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 0.4rem;
  }
}

.project-meta-item {
  display: flex;
  flex-direction: column;
}

.project-meta-label {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.project-meta-val {
  font-size: var(--fs-xs);
  color: var(--color-text);
  font-weight: 600;
  margin-top: 0.1rem;
  word-break: break-word;
}

.project-scope-box {
  margin-bottom: var(--spacing-sm);
}

.project-scope-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.15rem;
}

.project-scope-text {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  line-height: 1.45;
}

.project-outcomes-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

/* Accordion Toggle Button */
.btn-expand-specs {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-top: 0.75rem;
  padding: 0.55rem 0.85rem;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--fs-xs);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-expand-specs:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-accent-border);
  color: var(--color-accent);
}

.btn-expand-specs.is-expanded {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-expand-icon {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--color-accent);
  flex-shrink: 0;
}

.btn-expand-specs.is-expanded .btn-expand-icon {
  transform: rotate(180deg);
}

/* Accordion Drawer Container */
.project-card-accordion {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.35s ease, margin 0.35s ease;
  opacity: 0;
  margin-top: 0;
}

.project-card-accordion.is-expanded {
  grid-template-rows: 1fr;
  opacity: 1;
  margin-top: 0.65rem;
}

.accordion-inner {
  overflow: hidden;
}

.accordion-specs-content {
  background: rgba(11, 18, 32, 0.85);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.85rem;
}

.specs-accordion-heading {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.specs-accordion-heading.text-amber { color: var(--color-accent); }
.specs-accordion-heading.text-cyan { color: #06b6d4; }
.specs-accordion-heading.text-green { color: #10b981; }

.specs-accordion-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0;
  margin: 0;
}

.specs-accordion-list li {
  display: flex;
  flex-direction: column;
  font-size: 0.72rem;
  line-height: 1.35;
  padding-bottom: 0.3rem;
  border-bottom: 1px dashed var(--color-border-subtle);
}

@media (min-width: 480px) {
  .specs-accordion-list li {
    flex-direction: row;
    justify-content: space-between;
    gap: 0.5rem;
  }
}

.specs-accordion-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.spec-accordion-label {
  color: var(--color-text-muted);
  font-weight: 600;
}

.spec-accordion-val {
  color: var(--color-text);
  font-weight: 600;
  text-align: right;
}

@media (max-width: 479px) {
  .spec-accordion-val {
    text-align: left;
    color: var(--color-text);
  }
}

/* ==========================================================================
   OPERATIONAL REACH MAP SECTION
   ========================================================================== */
.reach-section {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.reach-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
  overflow-x: auto;
  padding-bottom: 0.5rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.reach-tabs::-webkit-scrollbar {
  display: none;
}

@media (min-width: 768px) {
  .reach-tabs {
    justify-content: center;
    flex-wrap: wrap;
    overflow-x: visible;
  }
}

.reach-tab {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: 600;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  white-space: nowrap;
}

.reach-tab:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

.reach-tab.is-active {
  background-color: var(--color-accent-subtle);
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.reach-tab-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-text-dim);
}

.dot-karnataka { background-color: var(--color-accent); }
.dot-andhra { background-color: #06b6d4; }
.dot-rajasthan { background-color: #10b981; }
.dot-all { background-color: var(--color-text-muted); }

.reach-wrapper {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: var(--spacing-2xl);
  align-items: center;
}

@media (min-width: 992px) {
  .reach-wrapper {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.map-container {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-md);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.india-map-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* State Paths in Map */
.state-path {
  fill: #1e293b;
  stroke: #334155;
  stroke-width: 1.5;
  cursor: pointer;
  transition: fill var(--transition-normal), stroke var(--transition-normal), stroke-width var(--transition-normal), filter var(--transition-normal);
}

.state-path:hover,
.state-path.is-active,
.state-path:focus-visible {
  stroke-width: 2.5;
  outline: none;
}

.state-path:focus-visible {
  stroke: #ffffff !important;
  filter: drop-shadow(0 0 8px var(--color-accent));
}

.state-karnataka.is-active {
  fill: rgba(197, 34, 39, 0.25);
  stroke: var(--color-accent);
}

.state-andhra.is-active {
  fill: rgba(6, 182, 212, 0.25);
  stroke: #06b6d4;
}

.state-rajasthan.is-active {
  fill: rgba(16, 185, 129, 0.25);
  stroke: #10b981;
}

/* Pin Styles */
.map-pin-group {
  cursor: pointer;
  transform-box: fill-box;
  transform-origin: center;
  transition: transform var(--transition-fast);
}

.map-pin-group:hover,
.map-pin-group:focus-visible {
  outline: none;
  transform: scale(1.18);
}

.map-pin-group:focus-visible .pin-core {
  stroke: #ffffff;
  stroke-width: 3px;
  filter: drop-shadow(0 0 10px var(--color-accent));
}

.pin-pulse {
  fill: rgba(197, 34, 39, 0.25);
  animation: mapPulse 2s infinite ease-in-out;
}

.pin-pulse.pin-andhra { fill: rgba(6, 182, 212, 0.2); }
.pin-pulse.pin-karnataka { fill: rgba(197, 34, 39, 0.28); }

@keyframes mapPulse {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 0.2; }
  100% { transform: scale(0.9); opacity: 0.8; }
}

.pin-core {
  fill: var(--color-accent);
  stroke: #0f172a;
  stroke-width: 2;
}

.pin-core.pin-hq {
  fill: var(--color-accent);
}

.map-state-label {
  fill: #f8fafc;
  font-size: 11px;
  font-weight: 700;
  text-anchor: middle;
  letter-spacing: 0.05em;
  pointer-events: none;
}

.map-city-sublabel {
  fill: #cbd5e1;
  font-size: 10px;
  font-weight: 500;
  text-anchor: middle;
  pointer-events: none;
}

.map-grid-connector {
  stroke: rgba(245, 158, 11, 0.3);
  stroke-width: 1.5;
  stroke-dasharray: 3 3;
}

/* Reach Detail Card */
.reach-detail-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}

.reach-card-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.reach-card-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
}

.reach-stats-row {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 0.75rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1rem;
  margin-bottom: var(--spacing-md);
  text-align: center;
}

@media (min-width: 480px) {
  .reach-stats-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.reach-stat-box {
  display: flex;
  flex-direction: column;
}

.reach-stat-val {
  font-size: var(--fs-lg);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.reach-stat-lbl {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-weight: 600;
  margin-top: 0.2rem;
}

.reach-key-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.reach-key-list li {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.reach-bullet {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
  margin-top: 0.45rem;
  flex-shrink: 0;
}

/* ==========================================================================
   CLIENT TESTIMONIALS SECTION (HORIZONTAL SCROLL)
   ========================================================================== */
.testimonials-section {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.testimonials-header-bar {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .testimonials-header-bar {
    flex-direction: row;
    align-items: flex-end;
  }
}

.scroll-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.scroll-btn {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.scroll-btn:hover {
  background-color: var(--color-surface);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.scroll-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Scroll track */
.testimonials-track {
  display: flex;
  gap: 2rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 2.5rem 1rem;
  scroll-padding: 0 calc(50% - 220px);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
  align-items: center;
}

@media (max-width: 640px) {
  .testimonials-track {
    scroll-padding: 0 calc(50% - 140px);
    gap: 1.25rem;
    padding: 1.75rem 0.5rem;
  }
}

.testimonials-track::-webkit-scrollbar {
  height: 6px;
}

.testimonials-track::-webkit-scrollbar-thumb {
  background-color: var(--color-border);
  border-radius: 3px;
}

.testimonial-card {
  flex: 0 0 clamp(280px, 80vw, 440px);
  max-width: 480px;
  scroll-snap-align: center;
  scroll-snap-stop: always;
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 3vw, 2rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: scale(0.92);
  opacity: 0.65;
  filter: grayscale(15%);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), 
              opacity 0.45s ease, 
              border-color 0.45s ease, 
              box-shadow 0.45s ease, 
              filter 0.45s ease;
  will-change: transform, opacity;
  cursor: pointer;
}

@media (min-width: 768px) {
  .testimonial-card {
    flex: 0 0 440px;
  }
}

.testimonial-card.is-active-card {
  transform: scale(1.06);
  opacity: 1;
  filter: grayscale(0%);
  z-index: 5;
  border-color: var(--color-accent);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5), 0 0 30px var(--color-accent-glow);
}

.testimonial-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

.testimonial-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  gap: 0.5rem;
  flex-wrap: wrap;
}

.testimonial-rating {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.testimonial-quote {
  font-size: var(--fs-base);
  color: var(--color-text);
  line-height: 1.6;
  font-style: italic;
  margin-bottom: var(--spacing-xl);
}

.testimonial-quote::before {
  content: "“";
  color: var(--color-accent);
  font-size: 1.5em;
  font-weight: bold;
  line-height: 0;
  margin-right: 0.2rem;
}

.testimonial-author-box {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent));
  color: #ffffff;
  font-weight: 800;
  font-size: var(--fs-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.author-name {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-text);
}

.author-title {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.author-org {
  font-size: var(--fs-xs);
  color: var(--color-accent);
  font-weight: 600;
  margin-top: 0.1rem;
}

.testimonial-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: var(--spacing-lg);
}

.testimonial-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-border);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-fast);
}

.testimonial-dot.is-active {
  background-color: var(--color-accent);
  width: 20px;
  border-radius: 4px;
}

/* ==========================================================================
   DRONE VIDEO PLAYER & PUE LINE CHART COMPONENT STYLES
   ========================================================================== */
.drone-video-container {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.drone-video-overlay-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: rgba(15, 23, 42, 0.85);
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--fs-xs);
  font-family: var(--font-mono, monospace);
  color: var(--color-text-muted);
}

.drone-rec-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: #ef4444;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.rec-dot {
  width: 8px;
  height: 8px;
  background-color: #ef4444;
  border-radius: 50%;
  animation: pulse-red 1.2s infinite ease-in-out;
}

@keyframes pulse-red {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.85); }
}

.drone-telemetry-text {
  font-size: 0.7rem;
  opacity: 0.9;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.drone-video-player {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #0b1120;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.drone-video-element {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.drone-crosshair {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  border: 1px stroke rgba(245, 158, 11, 0.4);
  pointer-events: none;
  opacity: 0.5;
}

.drone-crosshair::before, .drone-crosshair::after {
  content: '';
  position: absolute;
  background-color: rgba(245, 158, 11, 0.6);
}

.drone-crosshair::before {
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
}

.drone-crosshair::after {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
}

.drone-play-btn {
  position: absolute;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: rgba(15, 23, 42, 0.88);
  color: var(--color-text);
  border: 1px solid rgba(245, 158, 11, 0.5);
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-pill);
  font-size: var(--fs-xs);
  font-weight: 700;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.drone-play-btn:hover {
  background-color: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
  transform: scale(1.05);
}

/* Low-Carbon PUE Line Chart Box */
.pue-chart-box {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0.85rem 1rem;
}

.pue-chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.pue-chart-title-group {
  display: flex;
  flex-direction: column;
}

.pue-chart-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--color-text);
}

.pue-chart-subtitle {
  font-size: 0.72rem;
  color: var(--color-text-muted);
}

.pue-badge-saving {
  background-color: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
}

.pue-chart-container {
  width: 100%;
  overflow-x: auto;
}

.pue-svg-chart {
  width: 100%;
  height: auto;
  min-width: 300px;
  display: block;
}

.pue-trend-path {
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  animation: draw-pue-path 2s ease-out forwards;
}

@keyframes draw-pue-path {
  to { stroke-dashoffset: 0; }
}

.pue-point-group {
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.pue-point-group:hover circle {
  r: 8px;
  stroke-width: 3px;
  filter: drop-shadow(0 0 6px #10b981);
}

/* ==========================================================================
   STAGGERED SCROLL REVEAL ANIMATIONS (CLASSY & DYNAMIC)
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(32px) scale(0.98);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.reveal-fade-up {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-fade-left {
  opacity: 0;
  transform: translateX(-36px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-fade-right {
  opacity: 0;
  transform: translateX(36px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-fade-up.is-visible,
.reveal-fade-left.is-visible,
.reveal-fade-right.is-visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* Staggered Delay Rules for Container Children */
.reveal-stagger > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger > *:nth-child(2) { transition-delay: 90ms; }
.reveal-stagger > *:nth-child(3) { transition-delay: 180ms; }
.reveal-stagger > *:nth-child(4) { transition-delay: 270ms; }
.reveal-stagger > *:nth-child(5) { transition-delay: 360ms; }
.reveal-stagger > *:nth-child(6) { transition-delay: 450ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-fade-up, .reveal-fade-left, .reveal-fade-right {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ==========================================================================
   THEME TOGGLE BUTTON & DAYTIME ENGINEERING LIGHT THEME
   ========================================================================== */
.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-accent);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.theme-toggle-btn:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-accent-border);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--color-accent-glow);
}

.theme-toggle-btn .sun-icon { display: block; }
.theme-toggle-btn .moon-icon { display: none; }

/* Light Theme Variables & Overrides */
html[data-theme="light"] {
  --color-bg: #f3f6fa;
  --color-surface: #ffffff;
  --color-surface-card: #f8fafc;
  --color-surface-hover: #e2e8f0;
  --color-border: #cbd5e1;
  --color-border-subtle: #e2e8f0;

  --color-text: #0f172a;
  --color-text-muted: #334155;
  --color-text-dim: #64748b;

  --color-accent: #b51a1e;
  --color-accent-hover: #8f1216;
  --color-accent-light: rgba(181, 26, 30, 0.08);
  --color-accent-border: rgba(181, 26, 30, 0.35);
  --color-accent-glow: rgba(181, 26, 30, 0.18);

  --color-cyan: #0284c7;
  --color-cyan-light: rgba(2, 132, 199, 0.1);
  --color-cyan-border: rgba(2, 132, 199, 0.35);

  --color-green: #059669;
  --color-green-light: rgba(5, 150, 105, 0.1);
  --color-green-border: rgba(5, 150, 105, 0.35);

  --color-purple: #9333ea;
  --color-purple-light: rgba(147, 51, 234, 0.1);
  --color-purple-border: rgba(147, 51, 234, 0.35);

  --color-pink: #e11d48;
  --color-pink-light: rgba(225, 29, 72, 0.1);
  --color-pink-border: rgba(225, 29, 72, 0.35);
}

html[data-theme="light"] .theme-toggle-btn {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #0f172a;
}

html[data-theme="light"] .theme-toggle-btn:hover {
  background: #e2e8f0;
  border-color: #94a3b8;
}

html[data-theme="light"] .theme-toggle-btn .sun-icon { display: none; }
html[data-theme="light"] .theme-toggle-btn .moon-icon { display: block; color: #0f172a; }

/* Structural Light Theme Adjustments */
html[data-theme="light"] body {
  background-color: #f1f5f9 !important;
  color: var(--color-text);
}

html[data-theme="light"] .bg-primary-dark {
  background: #f1f5f9 !important;
  background-image: none !important;
}

html[data-theme="light"] .bg-alt-dark {
  background: #ffffff !important;
  background-image: none !important;
  border-top: 1px solid #e2e8f0 !important;
  border-bottom: 1px solid #e2e8f0 !important;
}

html[data-theme="light"] .mission-section,
html[data-theme="light"] .services-section,
html[data-theme="light"] .projects-section,
html[data-theme="light"] .gov-section,
html[data-theme="light"] .process-section,
html[data-theme="light"] .contact-section,
html[data-theme="light"] .faq-section {
  background: #ffffff !important;
  background-image: none !important;
}

html[data-theme="light"] .estimator-section,
html[data-theme="light"] .testimonials-section,
html[data-theme="light"] .spec-section {
  background: #f1f5f9 !important;
  background-image: none !important;
}

html[data-theme="light"] .pentagon-section,
html[data-theme="light"] .reach-section {
  background: #f8fafc !important;
  background-image: none !important;
  border-color: #e2e8f0 !important;
}

html[data-theme="light"] .site-header {
  background-color: rgba(255, 255, 255, 0.95);
  border-bottom-color: #cbd5e1;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
}

html[data-theme="light"] .hero-section {
  background: linear-gradient(135deg, #eef2f6 0%, #f8fafc 50%, #e2e8f0 100%) !important;
}

html[data-theme="light"] .stats-bar {
  background: #ffffff !important;
  border-color: #e2e8f0 !important;
}

html[data-theme="light"] .section-title {
  color: #0f172a !important;
  text-shadow: none !important;
}

html[data-theme="light"] .section-subtitle {
  color: #334155 !important;
}

html[data-theme="light"] .mission-pillar-card {
  background: #ffffff !important;
  background-image: none !important;
  border-color: #e2e8f0 !important;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.06) !important;
}

html[data-theme="light"] .mission-pillar-title {
  color: #0f172a !important;
}

html[data-theme="light"] .mission-pillar-desc {
  color: #475569 !important;
}

html[data-theme="light"] .hero-telemetry-card,
html[data-theme="light"] .estimator-card,
html[data-theme="light"] .gov-card,
html[data-theme="light"] .reach-detail-card,
html[data-theme="light"] .service-card,
html[data-theme="light"] .project-card,
html[data-theme="light"] .testimonial-card,
html[data-theme="light"] .spec-card,
html[data-theme="light"] .nav-dropdown-menu,
html[data-theme="light"] .modal-container,
html[data-theme="light"] .timeline-content-card,
html[data-theme="light"] .digital-twin-showcase-card,
html[data-theme="light"] .faq-card {
  background: #ffffff !important;
  background-image: none !important;
  border-color: #cbd5e1 !important;
  box-shadow: 0 10px 28px -6px rgba(15, 23, 42, 0.08);
}

/* Light Theme Hero Telemetry HUD */
html[data-theme="light"] .hero-telemetry-card {
  background: #ffffff !important;
  background-image: none !important;
  border: 1px solid #cbd5e1 !important;
  box-shadow: 0 20px 45px -10px rgba(15, 23, 42, 0.12), 0 1px 3px rgba(15, 23, 42, 0.06) !important;
}

html[data-theme="light"] .hero-telemetry-card::before {
  background: linear-gradient(90deg, #b51a1e, #0284c7, #059669);
}

html[data-theme="light"] .telemetry-header {
  border-bottom: 1px solid #e2e8f0 !important;
}

html[data-theme="light"] .telemetry-live-badge {
  color: #059669 !important;
}

html[data-theme="light"] .pulse-dot {
  background-color: #059669 !important;
  box-shadow: 0 0 8px rgba(5, 150, 105, 0.5) !important;
}

html[data-theme="light"] .hero-telemetry-card .badge-accent {
  background-color: #fee2e2 !important;
  color: #b51a1e !important;
  border: 1px solid #fca5a5 !important;
  font-weight: 700 !important;
}

html[data-theme="light"] .telemetry-stat {
  background: #f8fafc !important;
  border: 1px solid #e2e8f0 !important;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.04) !important;
}

html[data-theme="light"] .telemetry-lbl {
  color: #475569 !important;
  font-weight: 600 !important;
}

html[data-theme="light"] .progress-bar-sm {
  background: #e2e8f0 !important;
}

html[data-theme="light"] .telemetry-val.text-accent {
  color: #b51a1e !important;
}

html[data-theme="light"] .telemetry-val.text-cyan {
  color: #0284c7 !important;
}

html[data-theme="light"] .telemetry-val.text-green {
  color: #059669 !important;
}

html[data-theme="light"] .telemetry-val.text-amber {
  color: #d97706 !important;
}

html[data-theme="light"] .telemetry-footer-status {
  background: #f0fdf4 !important;
  border: 1px solid #bbf7d0 !important;
}

html[data-theme="light"] .status-title {
  color: #0f172a !important;
  font-weight: 700 !important;
}

html[data-theme="light"] .status-sub {
  color: #475569 !important;
  font-weight: 500 !important;
}

html[data-theme="light"] .estimator-card {
  background-color: #ffffff;
  border-color: #cbd5e1;
}

html[data-theme="light"] .estimator-results-hud {
  background-color: #f8fafc;
  border: 1px solid #cbd5e1;
}

html[data-theme="light"] .hud-top-bar {
  border-bottom-color: #cbd5e1;
}

html[data-theme="light"] .hud-code {
  color: #475569;
  background-color: #e2e8f0;
  border: 1px solid #cbd5e1;
}

html[data-theme="light"] .hud-metric-card {
  background-color: #ffffff;
  border-color: #cbd5e1;
}

html[data-theme="light"] .hud-metric-label {
  color: #64748b;
}

html[data-theme="light"] .hud-metric-sub {
  color: #475569;
}

html[data-theme="light"] .hud-deliverables-box {
  background-color: #ffffff;
  border-color: #cbd5e1;
  color: #0f172a;
}

html[data-theme="light"] .est-deliverables-list li {
  color: #334155;
}

html[data-theme="light"] .form-select {
  background-color: #ffffff;
  border-color: #cbd5e1;
  color: #0f172a;
}

html[data-theme="light"] .estimator-slider {
  background-color: #cbd5e1;
}

html[data-theme="light"] .slider-ticks span {
  color: #64748b;
}

html[data-theme="light"] .project-meta-grid,
html[data-theme="light"] .accordion-specs-content,
html[data-theme="light"] .btn-expand-specs {
  background-color: #f1f5f9;
  border-color: #cbd5e1;
  color: #0f172a;
}

html[data-theme="light"] .btn-expand-specs:hover {
  background-color: #fee2e2;
  border-color: #b51a1e;
  color: #991b1b;
}

html[data-theme="light"] .pue-chart-box {
  background-color: #f8fafc;
  border-color: #cbd5e1;
}

html[data-theme="light"] .pue-chart-title {
  color: #0f172a;
}

html[data-theme="light"] .pue-chart-subtitle {
  color: #475569;
}

html[data-theme="light"] .chart-grid-lines line {
  stroke: #cbd5e1;
}

html[data-theme="light"] .drone-video-overlay-bar {
  background-color: #f1f5f9;
  border-bottom-color: #cbd5e1;
  color: #334155;
}

html[data-theme="light"] .drone-play-btn {
  background-color: rgba(255, 255, 255, 0.95);
  color: #0f172a;
  border-color: #b51a1e;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.12);
}

html[data-theme="light"] .drone-play-btn:hover {
  background-color: #b51a1e;
  color: #ffffff;
}

html[data-theme="light"] .brand-logo-img,
html[data-theme="light"] .footer-logo-img {
  content: url('assets/aam-logo-transparent.png');
}

html[data-theme="light"] .drone-video-player {
  background-color: #e2e8f0;
}

html[data-theme="light"] .pentagon-detail-card {
  background-color: #ffffff;
  border-color: #cbd5e1;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

html[data-theme="light"] .vertical-node-desc {
  color: #334155;
}

html[data-theme="light"] .reach-stats-row {
  background-color: #f8fafc;
  border-color: #cbd5e1;
}

html[data-theme="light"] .reach-stat-lbl {
  color: #475569;
}

html[data-theme="light"] .reach-key-list li {
  color: #334155;
}

html[data-theme="light"] .testimonial-card.is-active-card {
  box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.16), 0 0 25px rgba(217, 119, 6, 0.25);
  border-color: var(--color-accent);
}

html[data-theme="light"] .form-control {
  background-color: #ffffff;
  border-color: #cbd5e1;
  color: #0f172a;
}

html[data-theme="light"] .form-control:focus {
  background-color: #ffffff;
  border-color: var(--color-accent);
}

html[data-theme="light"] .form-feedback.is-error {
  background-color: #fee2e2;
  border-color: #fca5a5;
  color: #991b1b;
}

html[data-theme="light"] .form-feedback.is-success {
  background-color: #d1fae5;
  border-color: #6ee7b7;
  color: #065f46;
}

html[data-theme="light"] .estimator-v-tab {
  background-color: #f1f5f9;
  border-color: #cbd5e1;
  color: #334155;
}

html[data-theme="light"] .estimator-v-tab.is-active {
  background-color: #ffffff;
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.15);
}

html[data-theme="light"] .reach-tab {
  background-color: #ffffff;
  border-color: #cbd5e1;
  color: #334155;
}

html[data-theme="light"] .reach-tab.is-active {
  background-color: #f1f5f9;
  border-color: var(--color-accent);
  color: #0f172a;
}

html[data-theme="light"] .map-container {
  background-color: #ffffff;
  border-color: #cbd5e1;
}

html[data-theme="light"] .state-path {
  fill: #e2e8f0;
  stroke: #94a3b8;
}

html[data-theme="light"] .state-path.is-active {
  fill: rgba(217, 119, 6, 0.15);
  stroke: var(--color-accent);
}

html[data-theme="light"] .map-state-label {
  fill: #0f172a;
}

html[data-theme="light"] .map-city-sublabel {
  fill: #475569;
}

html[data-theme="light"] .india-outline {
  stroke: #cbd5e1;
}

html[data-theme="light"] .hud-metric-card,
html[data-theme="light"] .hud-deliverables-box {
  background-color: #f8fafc;
  border-color: #cbd5e1;
}

html[data-theme="light"] .spec-table th {
  color: #475569;
}

html[data-theme="light"] .spec-table td {
  color: #0f172a;
}

html[data-theme="light"] .spec-table tr {
  border-bottom-color: #e2e8f0;
}

html[data-theme="light"] .modal-container {
  background-color: #ffffff;
  color: #0f172a;
}

html[data-theme="light"] .modal-header,
html[data-theme="light"] .modal-footer {
  border-color: #e2e8f0;
  background-color: #f8fafc;
}

html[data-theme="light"] .comparison-table th {
  background-color: #f1f5f9;
  color: #0f172a;
  border-color: #cbd5e1;
}

html[data-theme="light"] .comparison-table td {
  border-color: #cbd5e1;
  color: #334155;
}

html[data-theme="light"] .comparison-table tbody tr:nth-child(even) {
  background-color: #f8fafc;
}

html[data-theme="light"] .sticky-col {
  background-color: #ffffff;
}

html[data-theme="light"] .comparison-table tbody tr:nth-child(even) .sticky-col {
  background-color: #f8fafc;
}

html[data-theme="light"] .badge {
  color: #0f172a;
}

html[data-theme="light"] .section-tag {
  background-color: #fee2e2 !important;
  border-color: rgba(181, 26, 30, 0.35) !important;
  color: #b51a1e !important;
  box-shadow: 0 2px 8px rgba(181, 26, 30, 0.1) !important;
}

html[data-theme="light"] .site-footer {
  background-color: #0f172a;
  color: #f8fafc;
}

html[data-theme="light"] .site-footer .footer-col-title,
html[data-theme="light"] .site-footer .footer-link {
  color: #e2e8f0;
}

html[data-theme="light"] .site-footer .footer-link:hover {
  color: var(--color-accent);
}

/* ==========================================================================
   SERVICES HEADER WITH COMPARISON TRIGGER
   ========================================================================== */
.services-title-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

@media (min-width: 768px) {
  .services-title-wrapper {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

/* ==========================================================================
   VERTICAL ANIMATED TIMELINE STYLES
   ========================================================================== */
.vertical-timeline-wrapper {
  position: relative;
  max-width: 52rem;
  margin: 0 auto;
  padding: 1rem 0;
}

.timeline-svg-rail {
  position: absolute;
  top: 1.5rem;
  bottom: 1.5rem;
  left: 23px;
  width: 4px;
  z-index: 1;
}

@media (min-width: 768px) {
  .timeline-svg-rail {
    left: 23px;
  }
}

.timeline-line-svg {
  width: 4px;
  height: 100%;
}

.timeline-line-bg {
  stroke: var(--color-border);
  stroke-width: 3px;
}

.timeline-line-progress {
  stroke: var(--color-accent);
  stroke-width: 3px;
  transition: y2 0.25s ease-out;
  stroke-linecap: round;
}

.timeline-nodes-list {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
  position: relative;
  z-index: 2;
}

.timeline-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

@media (min-width: 768px) {
  .timeline-item {
    gap: 2rem;
  }
}

.timeline-marker {
  position: relative;
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: var(--radius-pill);
  background-color: var(--color-surface);
  border: 2px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px var(--color-accent-glow);
  transition: all 0.35s ease;
}

.timeline-marker.cyan-marker {
  border-color: var(--color-cyan);
  box-shadow: 0 0 16px var(--color-cyan-glow);
}

.timeline-marker.purple-marker {
  border-color: var(--color-purple);
  box-shadow: 0 0 16px var(--color-purple-glow);
}

.timeline-marker.green-marker {
  border-color: var(--color-green);
  box-shadow: 0 0 16px var(--color-green-glow);
}

.marker-pulse {
  position: absolute;
  inset: -6px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-accent);
  opacity: 0.4;
  animation: marker-pulse-anim 2.5s infinite;
}

@keyframes marker-pulse-anim {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.15); opacity: 0; }
  100% { transform: scale(0.9); opacity: 0; }
}

.marker-num {
  font-size: var(--fs-sm);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.timeline-content-card {
  flex: 1;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.2rem, 3vw, 1.75rem);
  box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.3);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.timeline-content-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent-border);
  box-shadow: 0 14px 32px -6px rgba(0, 0, 0, 0.4), 0 0 20px var(--color-accent-glow);
}

.timeline-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.timeline-duration-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-surface-hover);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
}

.timeline-step-title {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.timeline-step-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: 1rem;
}

.timeline-milestones {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--color-border-subtle);
}

.milestone-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-xs);
  color: var(--color-text);
  font-weight: 500;
}

.milestone-pill svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ==========================================================================
   SERVICE COMPARISON MODAL & MATRIX TABLE
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background-color: rgba(3, 7, 18, 0.82);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.7);
  transform: scale(0.95) translateY(12px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.modal-overlay.is-open .modal-container {
  transform: scale(1) translateY(0);
}

.modal-lg {
  max-width: 1280px;
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  background-color: var(--color-surface);
}

.modal-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-top: 0.25rem;
}

.modal-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}

.modal-close-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  padding: 0.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
  border-color: var(--color-accent-border);
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.modal-footer-btns {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Comparison Matrix Table */
.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1000px;
  font-size: var(--fs-xs);
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border-subtle);
  border-right: 1px solid var(--color-border-subtle);
  vertical-align: top;
}

.comparison-table th:last-child,
.comparison-table td:last-child {
  border-right: none;
}

.comparison-table thead th {
  background-color: var(--color-surface);
  color: var(--color-text);
  font-weight: 700;
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 2px solid var(--color-border);
}

.sticky-col {
  position: sticky;
  left: 0;
  z-index: 11;
  background-color: var(--color-surface);
  min-width: 180px;
  max-width: 200px;
  font-weight: 700;
  color: var(--color-text);
}

.comparison-table tbody tr:hover td {
  background-color: var(--color-surface-hover);
}

.comparison-table tbody tr:hover .sticky-col {
  background-color: var(--color-surface-hover);
}

.comp-header-cell {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.comp-icon {
  display: flex;
  align-items: center;
}

.comp-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-text);
}

.time-badge {
  display: inline-block;
  background: rgba(245, 158, 11, 0.12);
  color: var(--color-accent);
  border: 1px solid var(--color-accent-border);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-pill);
  font-weight: 700;
}

.complexity-pill {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.complexity-pill.level-medium {
  background: var(--color-accent-light);
  color: var(--color-accent);
  border: 1px solid var(--color-accent-border);
}

.complexity-pill.level-high {
  background: rgba(6, 182, 212, 0.15);
  color: #06b6d4;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.complexity-pill.level-extreme {
  background: rgba(168, 85, 247, 0.15);
  color: #a855f7;
  border: 1px solid rgba(168, 85, 247, 0.3);
}

.footer-link-btn {
  background: transparent;
  border: none;
  padding: 0;
  font-family: inherit;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  cursor: pointer;
  text-align: left;
  transition: color var(--transition-fast);
}

.footer-link-btn:hover {
  color: var(--color-accent);
}

/* ==========================================================================
   DIGITAL TWIN & PHYSICAL INFRASTRUCTURE SYNERGY SHOWCASE
   ========================================================================== */
.digital-twin-showcase-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 3vw, 2.5rem);
  margin-bottom: var(--spacing-3xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.twin-synergy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

@media (min-width: 992px) {
  .twin-synergy-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.twin-graphic-container {
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.2);
}

.twin-svg-illustration {
  width: 100%;
  height: auto;
  display: block;
}

.twin-node-pulse {
  animation: twinPulse 2s infinite ease-in-out;
  transform-origin: center;
}

@keyframes twinPulse {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 0.4; }
}

.twin-flow-line {
  stroke-dasharray: 6 6;
  animation: twinFlow 20s linear infinite;
}

@keyframes twinFlow {
  from { stroke-dashoffset: 100; }
  to { stroke-dashoffset: 0; }
}

.twin-controls-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.twin-tab-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.twin-tab-btn:hover {
  border-color: var(--color-accent);
  transform: translateX(4px);
}

.twin-tab-btn.is-active {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  box-shadow: 0 4px 14px var(--color-accent-glow);
}

.twin-tab-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
}

.twin-tab-btn.is-active .twin-tab-icon {
  background: var(--color-accent);
  color: #ffffff;
}

.twin-tab-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.2rem;
}

.twin-tab-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  line-height: 1.45;
}

/* ==========================================================================
   INTERACTIVE FAQ SECTION (PRE-FOOTER)
   ========================================================================== */
.faq-section {
  padding: var(--space-3xl) 0;
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.faq-header-block {
  max-width: 52rem;
  margin: 0 auto var(--space-2xl) auto;
  text-align: center;
}

.faq-search-wrapper {
  position: relative;
  max-width: 38rem;
  margin: 1.5rem auto 1.25rem auto;
}

.faq-search-input {
  width: 100%;
  padding: 0.85rem 3rem 0.85rem 2.85rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  font-size: var(--fs-sm);
  outline: none;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.faq-search-input::placeholder {
  color: var(--color-text-dim);
  opacity: 1;
}

.faq-search-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.faq-search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

.faq-search-clear {
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-surface-hover);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.faq-search-clear:hover {
  background: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
  transform: translateY(-50%) scale(1.08);
}

.faq-categories {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.faq-category-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
  font-weight: 600;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.faq-category-btn:hover {
  border-color: var(--color-accent-border);
  color: var(--color-text);
  background-color: var(--color-surface-hover);
  transform: translateY(-1px);
}

.faq-category-btn.is-active {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent);
  color: #ffffff;
  box-shadow: 0 0 16px var(--color-accent-glow);
}

.faq-pill-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.35rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 700;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.faq-category-btn.is-active .faq-pill-count {
  background-color: var(--color-accent);
  color: #ffffff;
}

.faq-status-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.faq-results-counter {
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
  font-weight: 500;
  background: rgba(255, 255, 255, 0.04);
  padding: 0.25rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
}

.faq-accordion-list {
  max-width: 52rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--color-border-subtle);
}

.faq-item.is-open {
  border-color: var(--color-accent-border);
  box-shadow: 0 8px 24px -4px var(--color-accent-glow);
}

.faq-item.is-filtered-out {
  display: none !important;
}

.faq-question-btn {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  text-align: left;
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-text);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-question-btn:hover {
  color: var(--color-accent);
}

.faq-question-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

.faq-chevron-icon {
  flex-shrink: 0;
  color: var(--color-accent);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-item.is-open .faq-chevron-icon {
  transform: rotate(180deg);
}

.faq-answer-drawer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  opacity: 0;
}

.faq-item.is-open .faq-answer-drawer {
  grid-template-rows: 1fr;
  opacity: 1;
}

.faq-answer-inner {
  overflow: hidden;
}

.faq-answer {
  padding: 0 1.5rem 1.25rem 1.5rem;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  border-top: 1px dashed var(--color-border-subtle);
  margin-top: 0.25rem;
  padding-top: 1rem;
}

.faq-answer strong {
  color: var(--color-text);
}

.faq-answer ul {
  margin-top: 0.5rem;
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

/* Rich Empty State */
.faq-empty-state {
  text-align: center;
  padding: 3.5rem 1.5rem;
  background-color: var(--color-surface-card);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 44rem;
  margin: 1.5rem auto 0 auto;
}

.faq-empty-icon-wrap {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent-border);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem auto;
  box-shadow: 0 0 20px var(--color-accent-glow);
}

.faq-empty-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.faq-empty-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 34rem;
  margin: 0 auto 1.5rem auto;
}

.faq-empty-query {
  color: var(--color-accent-text);
  font-weight: 600;
}

.faq-empty-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.faq-reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* Utility Hidden Class */
.is-hidden {
  display: none !important;
}

/* ==========================================================================
   LIGHT THEME FAQ OVERRIDES
   ========================================================================== */
html[data-theme="light"] .faq-search-input {
  background-color: #ffffff;
  border-color: #cbd5e1;
  color: #0f172a;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

html[data-theme="light"] .faq-search-input::placeholder {
  color: #64748b;
}

html[data-theme="light"] .faq-search-clear {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #475569;
}

html[data-theme="light"] .faq-search-clear:hover {
  background: var(--color-accent);
  color: #ffffff;
}

html[data-theme="light"] .faq-category-btn {
  background-color: #ffffff;
  border-color: #cbd5e1;
  color: #475569;
}

html[data-theme="light"] .faq-category-btn:hover {
  border-color: var(--color-accent);
  color: #0f172a;
  background-color: #f8fafc;
}

html[data-theme="light"] .faq-category-btn.is-active {
  background-color: #fee2e2;
  border-color: #b51a1e;
  color: #991b1b;
  box-shadow: 0 0 12px rgba(181, 26, 30, 0.2);
}

html[data-theme="light"] .faq-pill-count {
  background-color: #e2e8f0;
  color: #475569;
}

html[data-theme="light"] .faq-category-btn.is-active .faq-pill-count {
  background-color: #b51a1e;
  color: #ffffff;
}

html[data-theme="light"] .faq-results-counter {
  background-color: #f1f5f9;
  border-color: #e2e8f0;
  color: #64748b;
}

html[data-theme="light"] .faq-item {
  background-color: #ffffff;
  border-color: #e2e8f0;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

html[data-theme="light"] .faq-item:hover {
  border-color: #cbd5e1;
}

html[data-theme="light"] .faq-item.is-open {
  border-color: rgba(181, 26, 30, 0.4);
  box-shadow: 0 6px 20px -4px rgba(181, 26, 30, 0.15);
}

html[data-theme="light"] .faq-question-btn {
  color: #0f172a;
}

html[data-theme="light"] .faq-question-btn:hover {
  color: #b51a1e;
}

html[data-theme="light"] .faq-answer {
  color: #334155;
  border-top-color: #e2e8f0;
}

html[data-theme="light"] .faq-answer strong {
  color: #0f172a;
}

html[data-theme="light"] .faq-empty-state {
  background-color: #ffffff;
  border-color: #cbd5e1;
}

html[data-theme="light"] .faq-empty-title {
  color: #0f172a;
}

html[data-theme="light"] .faq-empty-desc {
  color: #475569;
}