/* ==========================================================================
   SOLAR DHARTI - Enterprise CSS Style System & Design Tokens
   Platform: PHP 8.2 SSR / Semantic HTML5 / Bootstrap 5.3.3 Custom
   Architecture: Clean-Tech Modern (Navy / Solar Gold / Emerald Green)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Primary Deep Navy & Royal Blue Palette (From 'Dharti' & Globe Logo) */
  --sd-navy: #0B1E36;
  --sd-navy-dark: #071220;
  --sd-navy-light: #123456;
  --sd-navy-muted: #2E5A88;
  --sd-navy-rgb: 11, 30, 54;
  --sd-royal-blue: #004E92;
  --sd-sky: #0284C7;
  --sd-cyan: #0EA5E9;

  /* Accent Solar Amber & Radiant Orange Palette (From 'Solar' & Sun Logo) */
  --sd-gold: #F59E0B;
  --sd-orange: #F97316;
  --sd-orange-dark: #EA580C;
  --sd-gold-glow: #FBBF24;
  --sd-gold-dark: #D97706;
  --sd-gold-light: #FEF3C7;
  --sd-gold-rgb: 245, 158, 11;

  /* Eco Green Sustainability Palette (From Leaf in Logo) */
  --sd-green: #10B981;
  --sd-green-dark: #059669;
  --sd-green-light: #D1FAE5;
  --sd-green-rgb: 16, 185, 129;

  /* Neutral & Surface Foundations */
  --sd-bg-light: #F8FAFC;
  --sd-bg-soft: #F1F5F9;
  --sd-surface: #FFFFFF;
  --sd-text-main: #1E293B;
  --sd-text-muted: #64748B;
  --sd-text-light: #94A3B8;
  --sd-border: rgba(11, 30, 54, 0.08);
  --sd-border-subtle: rgba(226, 232, 240, 0.8);

  /* Shadows & Depth Levels */
  --sd-shadow-sm: 0 2px 4px rgba(11, 30, 54, 0.04);
  --sd-shadow-md: 0 6px 16px rgba(11, 30, 54, 0.07);
  --sd-shadow-lg: 0 12px 28px rgba(11, 30, 54, 0.10);
  --sd-shadow-xl: 0 20px 40px rgba(11, 30, 54, 0.14);
  --sd-shadow-gold: 0 10px 25px rgba(245, 158, 11, 0.28);
  --sd-shadow-orange: 0 10px 25px rgba(249, 115, 22, 0.32);
  --sd-shadow-green: 0 10px 25px rgba(16, 185, 129, 0.24);

  /* Transitions & Curves */
  --sd-ease-default: cubic-bezier(0.16, 1, 0.3, 1);
  --sd-transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --sd-radius-sm: 8px;
  --sd-radius-md: 14px;
  --sd-radius-lg: 20px;
  --sd-radius-xl: 28px;
  --sd-radius-pill: 9999px;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: 'Outfit', 'Plus Jakarta Sans', sans-serif;
}

/* Base Document Reset & Setup */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--sd-text-main);
  background-color: var(--sd-bg-light);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6,
.font-heading {
  font-family: var(--font-heading);
  color: var(--sd-navy);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

a {
  color: var(--sd-navy-light);
  text-decoration: none;
  transition: var(--sd-transition);
}

a:hover {
  color: var(--sd-gold);
}

img {
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   Utility Classes & Color Helpers
   ========================================================================== */

.text-sd-navy { color: var(--sd-navy) !important; }
.text-sd-navy-light { color: var(--sd-navy-light) !important; }
.text-sd-gold { color: var(--sd-gold) !important; }
.text-sd-gold-glow { color: var(--sd-gold-glow) !important; }
.text-sd-green { color: var(--sd-green) !important; }

.bg-sd-navy { background-color: var(--sd-navy) !important; color: #fff; }
.bg-sd-navy-dark { background-color: var(--sd-navy-dark) !important; color: #fff; }
.bg-sd-navy-light { background-color: var(--sd-navy-light) !important; color: #fff; }
.bg-sd-gold { background-color: var(--sd-gold) !important; color: var(--sd-navy-dark); }
.bg-sd-gold-light { background-color: var(--sd-gold-light) !important; color: var(--sd-gold-dark); }
.bg-sd-green { background-color: var(--sd-green) !important; color: #fff; }
.bg-sd-green-light { background-color: var(--sd-green-light) !important; color: var(--sd-green-dark); }
.bg-sd-light { background-color: var(--sd-bg-light) !important; }

/* Subtle Gradients */
.gradient-solar-hero {
  background: linear-gradient(135deg, rgba(11, 25, 44, 0.94) 0%, rgba(14, 38, 68, 0.92) 50%, rgba(30, 62, 98, 0.88) 100%);
}

.gradient-gold {
  background: linear-gradient(135deg, var(--sd-gold) 0%, #EA580C 100%);
}

.gradient-green {
  background: linear-gradient(135deg, var(--sd-green) 0%, #059669 100%);
}

.gradient-navy {
  background: linear-gradient(135deg, var(--sd-navy-dark) 0%, var(--sd-navy) 60%, var(--sd-navy-light) 100%);
}

.text-gradient-gold {
  background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 50%, #F59E0B 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==========================================================================
   Glassmorphism System
   ========================================================================== */

.glass-nav {
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(11, 25, 44, 0.06);
  box-shadow: 0 4px 20px rgba(11, 25, 44, 0.04);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-nav.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 30px rgba(11, 25, 44, 0.08);
}

.glass-card {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--sd-radius-lg);
  box-shadow: 0 10px 30px rgba(11, 25, 44, 0.05);
}

.glass-card-dark {
  background: rgba(11, 25, 44, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--sd-radius-lg);
  color: #FFFFFF;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.glass-pill {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--sd-radius-pill);
}

/* ==========================================================================
   Micro-Interactions & Card Elevations
   ========================================================================== */

.hover-lift {
  transition: transform 0.28s var(--sd-ease-default), box-shadow 0.28s var(--sd-ease-default);
  will-change: transform, box-shadow;
}

.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--sd-shadow-xl) !important;
}

.hover-lift-sm {
  transition: transform 0.2s var(--sd-ease-default), box-shadow 0.2s var(--sd-ease-default);
}

.hover-lift-sm:hover {
  transform: translateY(-3px);
  box-shadow: var(--sd-shadow-md) !important;
}

.hover-glow-gold:hover {
  box-shadow: var(--sd-shadow-gold) !important;
}

.hover-glow-green:hover {
  box-shadow: var(--sd-shadow-green) !important;
}

/* ==========================================================================
   Solar Shimmer & Interactive Buttons
   ========================================================================== */

.btn-solar-primary {
  background: linear-gradient(135deg, #F59E0B 0%, #F97316 50%, #EA580C 100%);
  color: #FFFFFF !important;
  font-family: var(--font-heading);
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border-radius: var(--sd-radius-md);
  border: none;
  position: relative;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(249, 115, 22, 0.35);
  transition: all 0.3s var(--sd-ease-default);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  z-index: 1;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.btn-solar-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-25deg);
  transition: 0.7s;
  z-index: -1;
}

.btn-solar-primary:hover {
  color: #FFFFFF !important;
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(249, 115, 22, 0.5);
}

.btn-solar-primary:hover::before {
  left: 150%;
}

.btn-solar-navy {
  background: linear-gradient(135deg, var(--sd-navy) 0%, var(--sd-royal-blue) 100%);
  color: #FFFFFF !important;
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: var(--sd-radius-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 6px 18px rgba(11, 30, 54, 0.25);
  transition: all 0.3s var(--sd-ease-default);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-solar-navy:hover {
  background: linear-gradient(135deg, var(--sd-royal-blue) 0%, var(--sd-navy) 100%);
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(0, 78, 146, 0.4);
  color: #FFFFFF !important;
}

.btn-solar-royal {
  background: linear-gradient(135deg, #004E92 0%, #0B1E36 100%);
  color: #FFFFFF !important;
  font-family: var(--font-heading);
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border-radius: var(--sd-radius-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 6px 18px rgba(0, 78, 146, 0.3);
  transition: all 0.3s var(--sd-ease-default);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-solar-royal:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(0, 78, 146, 0.45);
  color: #FFFFFF !important;
}

.btn-solar-green {
  background: linear-gradient(135deg, var(--sd-green) 0%, var(--sd-green-dark) 100%);
  color: #FFFFFF !important;
  font-family: var(--font-heading);
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border-radius: var(--sd-radius-md);
  border: none;
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.3);
  transition: all 0.3s var(--sd-ease-default);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-solar-green:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(16, 185, 129, 0.42);
  color: #FFFFFF !important;
}

.btn-solar-outline {
  background: transparent;
  color: var(--sd-navy) !important;
  border: 2px solid var(--sd-navy);
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 0.7rem 1.6rem;
  border-radius: var(--sd-radius-md);
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-solar-outline:hover {
  background-color: var(--sd-navy);
  color: #FFFFFF !important;
  transform: translateY(-2px);
  box-shadow: var(--sd-shadow-md);
}

.btn-solar-outline-gold {
  background: transparent;
  color: var(--sd-gold) !important;
  border: 2px solid var(--sd-gold);
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 0.7rem 1.6rem;
  border-radius: var(--sd-radius-md);
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-solar-outline-gold:hover {
  background-color: var(--sd-gold);
  color: var(--sd-navy) !important;
  transform: translateY(-2px);
  box-shadow: var(--sd-shadow-gold);
}

/* ==========================================================================
   Badges, Indicators & Micro Pulse
   ========================================================================== */

.badge-subsidy {
  background-color: #ECFDF5;
  color: #065F46;
  border: 1px solid #A7F3D0;
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  padding: 0.35rem 0.75rem;
  border-radius: var(--sd-radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.badge-gold {
  background-color: #FFFBEB;
  color: #92400E;
  border: 1px solid #FDE68A;
  font-weight: 600;
  font-size: 0.78rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--sd-radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.badge-navy {
  background-color: #F1F5F9;
  color: var(--sd-navy);
  border: 1px solid #CBD5E1;
  font-weight: 600;
  font-size: 0.78rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--sd-radius-pill);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  position: relative;
}

.pulse-dot-green {
  background-color: var(--sd-green);
}

.pulse-dot-green::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--sd-green);
  opacity: 0.6;
  animation: pulse-ring 1.8s infinite cubic-bezier(0.24, 0, 0.38, 1);
}

.pulse-dot-gold {
  background-color: var(--sd-gold);
}

.pulse-dot-gold::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--sd-gold);
  opacity: 0.6;
  animation: pulse-ring 1.8s infinite cubic-bezier(0.24, 0, 0.38, 1);
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.8);
    opacity: 0.8;
  }
  100% {
    transform: scale(2.4);
    opacity: 0;
  }
}

/* ==========================================================================
   Header & Navigation Styling
   ========================================================================== */

.top-bar-announcement {
  background-color: var(--sd-navy-dark);
  color: #94A3B8;
  font-size: 0.82rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar-announcement a {
  color: #E2E8F0;
}

.top-bar-announcement a:hover {
  color: var(--sd-gold);
}

.brand-logo-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  transition: transform 0.25s var(--sd-ease-default);
  padding: 0.15rem 0;
}

.brand-logo-wrap:hover {
  transform: scale(1.02);
}

.brand-logo-img {
  height: 80px;
  max-height: 80px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(11, 30, 54, 0.08));
  display: block;
}

.brand-footer-logo-img {
  height: 100px;
  width: auto;
  max-height: 100px;
  object-fit: contain;
  background: #FFFFFF;
  padding: 5px 12px;
  border-radius: var(--sd-radius-md);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.28);
  display: inline-block;
}

.brand-logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.45rem;
  color: var(--sd-navy);
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  line-height: 1;
}

.brand-logo-text .logo-sun-icon {
  color: var(--sd-orange);
  font-size: 1.55rem;
  line-height: 1;
  filter: drop-shadow(0 2px 8px rgba(249, 115, 22, 0.4));
}

.brand-logo-tag {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sd-royal-blue);
  background: rgba(0, 78, 146, 0.08);
  border: 1px solid rgba(0, 78, 146, 0.15);
  padding: 0.18rem 0.5rem;
  border-radius: var(--sd-radius-pill);
  margin-left: 0.2rem;
  white-space: nowrap;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.navbar .nav-item {
  display: inline-flex;
  align-items: center;
}

.navbar .nav-link {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--sd-navy);
  padding: 0.5rem 0.72rem !important;
  border-radius: var(--sd-radius-sm);
  transition: all 0.2s ease;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  line-height: 1.25;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
  color: var(--sd-orange);
  background-color: rgba(249, 115, 22, 0.08);
}

.badge-mini-live {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.45rem;
  background: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
  color: #FFFFFF;
  border-radius: var(--sd-radius-pill);
  line-height: 1;
  margin-left: 0.2rem;
  box-shadow: 0 2px 6px rgba(249, 115, 22, 0.35);
}

.btn-header-cta {
  background: linear-gradient(135deg, #F59E0B 0%, #F97316 50%, #EA580C 100%);
  color: #FFFFFF !important;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.88rem;
  padding: 0.58rem 1.25rem;
  border-radius: var(--sd-radius-md);
  border: none;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
  transition: all 0.25s var(--sd-ease-default);
  position: relative;
  overflow: hidden;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.btn-header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(249, 115, 22, 0.5);
  color: #FFFFFF !important;
}

.navbar .dropdown-menu {
  border: 1px solid rgba(11, 30, 54, 0.08);
  border-radius: var(--sd-radius-md);
  box-shadow: 0 18px 36px rgba(11, 30, 54, 0.12);
  padding: 0.8rem;
  background: #FFFFFF;
  margin-top: 0.5rem;
}

.navbar .dropdown-item {
  font-weight: 500;
  font-size: 0.92rem;
  padding: 0.6rem 1rem;
  border-radius: var(--sd-radius-sm);
  color: var(--sd-navy);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.navbar .dropdown-item:hover {
  background-color: var(--sd-bg-light);
  color: var(--sd-orange);
}

/* ==========================================================================
   Section Components & Structural Layout
   ========================================================================== */

.section-padding {
  padding: 5.5rem 0;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sd-gold);
  background: rgba(245, 158, 11, 0.1);
  padding: 0.35rem 0.85rem;
  border-radius: var(--sd-radius-pill);
  margin-bottom: 0.8rem;
}

.section-tag-green {
  color: var(--sd-green);
  background: rgba(16, 185, 129, 0.1);
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  color: var(--sd-navy);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.12rem;
  color: var(--sd-text-muted);
  max-width: 680px;
  margin: 0 auto;
}

.gold-accent-line {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--sd-gold), var(--sd-gold-glow));
  border-radius: 2px;
  margin: 1rem 0;
}

.gold-accent-line.center {
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   Hero & Showcase Cards
   ========================================================================== */

.hero-wrapper {
  position: relative;
  background: #06111F;
  color: #FFFFFF;
  overflow: hidden;
  padding: 5.5rem 0 4.5rem;
  min-height: 640px;
}

/* Multi-Video Background Stack for Seamless Synchronized Switching */
.hero-video-stack {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 1;
  pointer-events: none;
}

.hero-video-stack .hero-bg-video,
.hero-bg-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.1s cubic-bezier(0.4, 0, 0.2, 1), visibility 1.1s cubic-bezier(0.4, 0, 0.2, 1);
  filter: saturate(1.2) contrast(1.06) brightness(0.96);
  z-index: 1;
  pointer-events: none;
}

.hero-video-stack .hero-bg-video.active,
.hero-bg-video.active {
  opacity: 0.88;
  visibility: visible;
}

.hero-bg-media {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: saturate(1.2);
  z-index: 1;
}

/* Perfect Crystal-Clear Directional Overlay: Crisp text contrast on left, brilliant video visibility across center & right */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, 
    rgba(6, 17, 31, 0.88) 0%, 
    rgba(6, 17, 31, 0.72) 36%, 
    rgba(6, 17, 31, 0.35) 68%, 
    rgba(6, 17, 31, 0.20) 100%
  );
  z-index: 2;
  pointer-events: none;
}

@media (max-width: 991.98px) {
  .hero-overlay {
    background: linear-gradient(180deg, 
      rgba(6, 17, 31, 0.90) 0%, 
      rgba(6, 17, 31, 0.80) 55%, 
      rgba(6, 17, 31, 0.55) 100%
    );
  }
}

.hero-content-box {
  position: relative;
  z-index: 3;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.45rem 1.1rem;
  border-radius: var(--sd-radius-pill);
  font-size: 0.86rem;
  color: #F8FAFC;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

/* In-Place Crossfade Banner System ("Change in place, not slide across") */
.hero-slider,
.hero-banner-fader {
  position: relative;
  min-height: 400px;
}

.hero-banner-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1), 
              transform 0.75s cubic-bezier(0.22, 1, 0.36, 1), 
              visibility 0.75s cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: none;
}

.hero-banner-item.active {
  position: relative;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

/* Fallback for standard carousel item if used */
.hero-carousel-item {
  min-height: 380px;
}

/* Modern Dynamic Banner Indicators */
.hero-banner-indicators,
.hero-carousel-indicators {
  position: static;
  margin: 1.8rem 0 0 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  padding: 0;
  list-style: none;
}

.hero-indicator-btn,
.hero-carousel-indicators button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 0.4rem 0.85rem;
  border-radius: var(--sd-radius-pill);
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-indicator-btn .indicator-bar {
  display: inline-block;
  width: 16px;
  height: 5px;
  border-radius: var(--sd-radius-pill);
  background: rgba(255, 255, 255, 0.45);
  transition: all 0.35s ease;
}

.hero-indicator-btn:hover,
.hero-carousel-indicators button:hover {
  background: rgba(255, 255, 255, 0.22);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.45);
  transform: translateY(-1px);
}

.hero-indicator-btn.active,
.hero-carousel-indicators button.active {
  background: rgba(249, 115, 22, 0.24);
  border-color: var(--sd-orange);
  color: #FFFFFF;
  box-shadow: 0 0 16px rgba(249, 115, 22, 0.45);
}

.hero-indicator-btn.active .indicator-bar {
  width: 28px;
  background: linear-gradient(90deg, var(--sd-gold), var(--sd-orange));
  box-shadow: 0 0 10px rgba(249, 115, 22, 0.85);
}

.hero-slider-nav-group {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 1rem;
}

.btn-hero-slider-nav {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.22s var(--sd-ease-default);
  cursor: pointer;
  font-size: 0.92rem;
}

.btn-hero-slider-nav:hover {
  background: var(--sd-orange);
  border-color: var(--sd-orange);
  color: #FFFFFF;
  transform: scale(1.08);
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.5);
}

/* Stat Counters */
.stat-counter-box {
  background: #FFFFFF;
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius-lg);
  padding: 1.8rem 1.4rem;
  text-align: center;
  box-shadow: var(--sd-shadow-sm);
  transition: var(--sd-transition);
}

.stat-counter-box:hover {
  transform: translateY(-5px);
  box-shadow: var(--sd-shadow-lg);
  border-color: rgba(245, 158, 11, 0.3);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--sd-navy);
  line-height: 1.1;
  margin-bottom: 0.3rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--sd-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ==========================================================================
   Package & Pricing Cards
   ========================================================================== */

.package-card {
  background: #FFFFFF;
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  box-shadow: var(--sd-shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.package-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(11, 25, 44, 0.12);
  border-color: rgba(245, 158, 11, 0.4);
}

.package-card.featured {
  border: 2px solid var(--sd-gold);
  position: relative;
}

.featured-ribbon {
  position: absolute;
  top: 18px;
  right: -32px;
  background: var(--sd-gold);
  color: var(--sd-navy-dark);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 2.8rem;
  transform: rotate(45deg);
  box-shadow: 0 4px 10px rgba(245, 158, 11, 0.35);
  z-index: 2;
}

.package-media-header {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.package-media-header img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.package-card:hover .package-media-header img {
  transform: scale(1.08);
}

.package-body {
  padding: 1.8rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.spec-list {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0;
}

.spec-list li {
  padding: 0.5rem 0;
  border-bottom: 1px dashed rgba(11, 25, 44, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
}

.spec-list li:last-child {
  border-bottom: none;
}

/* ==========================================================================
   Project Tracking Timeline Stepper
   ========================================================================== */

.tracker-container {
  background: #FFFFFF;
  border-radius: var(--sd-radius-xl);
  border: 1px solid var(--sd-border);
  padding: 2.5rem;
  box-shadow: var(--sd-shadow-md);
}

.stepper-horizontal {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin: 2.5rem 0;
}

.stepper-horizontal::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 5%;
  width: 90%;
  height: 4px;
  background: #E2E8F0;
  z-index: 1;
}

.stepper-progress-bar {
  position: absolute;
  top: 24px;
  left: 5%;
  height: 4px;
  background: linear-gradient(90deg, var(--sd-green), var(--sd-gold));
  z-index: 2;
  transition: width 0.6s ease;
}

.step-node {
  position: relative;
  z-index: 3;
  text-align: center;
  flex: 1;
}

.step-icon-circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 3px solid #CBD5E1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #94A3B8;
  transition: all 0.3s ease;
  margin-bottom: 0.75rem;
}

.step-node.completed .step-icon-circle {
  background: var(--sd-green);
  border-color: var(--sd-green);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

.step-node.active .step-icon-circle {
  background: var(--sd-gold);
  border-color: var(--sd-gold);
  color: var(--sd-navy-dark);
  box-shadow: 0 0 0 6px rgba(245, 158, 11, 0.25);
  animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
  0% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(245, 158, 11, 0); }
  100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

.step-title {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--sd-navy);
  margin-bottom: 0.2rem;
}

.step-node.pending .step-title {
  color: #94A3B8;
}

.step-date {
  font-size: 0.75rem;
  color: var(--sd-text-muted);
}

/* ==========================================================================
   Solar Savings Calculator UI & Range Sliders
   ========================================================================== */

.calc-card {
  background: #FFFFFF;
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius-xl);
  padding: 2.2rem;
  box-shadow: var(--sd-shadow-lg);
}

.calc-range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #E2E8F0;
  outline: none;
  margin: 1.2rem 0;
  transition: background 0.2s;
}

.calc-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--sd-gold);
  border: 3px solid #FFFFFF;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.4);
  cursor: pointer;
  transition: transform 0.15s ease;
}

.calc-range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.calc-metric-badge {
  background: var(--sd-bg-light);
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius-md);
  padding: 1rem;
  text-align: center;
  transition: var(--sd-transition);
}

.calc-metric-badge:hover {
  background: #FFFFFF;
  border-color: rgba(245, 158, 11, 0.4);
  box-shadow: var(--sd-shadow-sm);
}

/* ==========================================================================
   Forms, Inputs & Dropzones
   ========================================================================== */

.form-control, .form-select {
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  border-radius: var(--sd-radius-md);
  border: 1.5px solid #CBD5E1;
  color: var(--sd-text-main);
  background-color: #FFFFFF;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus, .form-select:focus {
  border-color: var(--sd-gold);
  box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15);
  outline: none;
}

.form-label {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--sd-navy);
  margin-bottom: 0.4rem;
}

.dropzone-upload-box {
  border: 2px dashed #CBD5E1;
  border-radius: var(--sd-radius-lg);
  padding: 2.2rem 1.5rem;
  text-align: center;
  background-color: var(--sd-bg-light);
  cursor: pointer;
  transition: all 0.25s ease;
}

.dropzone-upload-box:hover,
.dropzone-upload-box.drag-over {
  border-color: var(--sd-gold);
  background-color: #FFFBEB;
}

/* Radio Card Tiles */
.radio-tile-card {
  position: relative;
  border: 2px solid #E2E8F0;
  border-radius: var(--sd-radius-md);
  padding: 1rem;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s ease;
  height: 100%;
}

.radio-tile-card input[type="radio"] {
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
}

.radio-tile-card:hover {
  border-color: #CBD5E1;
  background-color: var(--sd-bg-light);
}

.radio-tile-card.selected,
.radio-tile-card:has(input:checked) {
  border-color: var(--sd-gold);
  background-color: #FFFBEB;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.15);
}

/* ==========================================================================
   Footer & Corporate Bottom
   ========================================================================== */

.site-footer {
  background-color: var(--sd-navy-dark);
  color: #94A3B8;
  padding: 5rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 1.4rem;
  position: relative;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: #94A3B8;
  font-size: 0.9rem;
  transition: color 0.2s ease, padding-left 0.2s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: var(--sd-gold);
  padding-left: 5px;
}

.footer-discom-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #CBD5E1;
  font-size: 0.76rem;
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  margin: 0.25rem;
  transition: all 0.2s ease;
}

.footer-discom-badge:hover {
  background: var(--sd-gold);
  color: var(--sd-navy-dark);
  border-color: var(--sd-gold);
}

.footer-bottom-bar {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.84rem;
  color: #64748B;
}

/* ==========================================================================
   Floating Action Button (WhatsApp Quick-Contact)
   ========================================================================== */

.floating-whatsapp-btn {
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25D366;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  z-index: 1040;
  transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.25s ease;
}

.floating-whatsapp-btn:hover {
  color: #FFFFFF;
  transform: scale(1.1) translateY(-3px);
  box-shadow: 0 14px 28px rgba(37, 211, 102, 0.5);
}

/* Back to Top Button */
.back-to-top-btn {
  position: fixed;
  bottom: 95px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--sd-navy);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
  z-index: 1039;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.back-to-top-btn.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top-btn:hover {
  background: var(--sd-gold);
  color: var(--sd-navy-dark);
}

/* ==========================================================================
   Responsive Adaptations & Breakpoints
   ========================================================================== */

@media (max-width: 991.98px) {
  .section-padding {
    padding: 3.8rem 0;
  }
  .section-title {
    font-size: 2rem;
  }
  .hero-wrapper {
    padding: 4.5rem 0 3.5rem;
  }
  .stepper-horizontal {
    flex-direction: column;
    gap: 1.5rem;
  }
  .stepper-horizontal::before,
  .stepper-progress-bar {
    display: none;
  }
  .step-node {
    display: flex;
    text-align: left;
    gap: 1.2rem;
    align-items: center;
  }
  .step-icon-circle {
    margin-bottom: 0;
    flex-shrink: 0;
  }
  .navbar-collapse {
    background: #FFFFFF;
    padding: 1.2rem;
    border-radius: var(--sd-radius-md);
    box-shadow: var(--sd-shadow-lg);
    margin-top: 1rem;
  }
}

@media (max-width: 575.98px) {
  .section-title {
    font-size: 1.7rem;
  }
  .stat-number {
    font-size: 1.8rem;
  }
  .calc-card {
    padding: 1.5rem;
  }
  .floating-whatsapp-btn {
    bottom: 18px;
    right: 18px;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }
}