/* ========================================================
   LUMIVOLT SOLAR - PREMIUM DESIGN SYSTEM & STYLESHEET
   Mobile-First, Pure CSS3 Architecture (No build tools needed)
   ======================================================== */

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

:root {
  /* Solar & Renewable Energy Brand Palette */
  --primary-green: #0D7A46;
  --primary-hover: #085932;
  --primary-dark: #064E3B;
  --emerald-light: #ECFDF5;
  --emerald-border: #A7F3D0;
  --emerald-accent: #10B981;

  /* Solar Light & Sun Accents */
  --solar-gold: #F59E0B;
  --solar-gold-hover: #D97706;
  --solar-gold-light: #FEF3C7;
  --solar-glow: rgba(245, 158, 11, 0.25);

  /* Neutrals & Surfaces */
  --slate-900: #0F172A;
  --slate-800: #1E293B;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748B;
  --slate-400: #94A3B8;
  --slate-200: #E2E8F0;
  --slate-100: #F1F5F9;
  --off-white: #F8FAFC;
  --white: #FFFFFF;

  /* Elevation & Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 2px 4px 0 rgba(15, 23, 42, 0.04), 0 1px 2px 0 rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 28px -6px rgba(15, 23, 42, 0.12), 0 6px 12px -4px rgba(15, 23, 42, 0.05);
  --shadow-glow: 0 0 24px rgba(13, 122, 70, 0.18);

  /* Geometry & Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 250ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--slate-700);
  background-color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--slate-900);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); line-height: 1.15; }
h2 { font-size: clamp(1.85rem, 3.5vw, 2.75rem); line-height: 1.2; }
h3 { font-size: clamp(1.35rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.2rem; }

p {
  margin-bottom: 1rem;
  max-width: 70ch;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--primary-green);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

/* Accessibility Focus Ring */
:focus-visible {
  outline: 2px solid var(--primary-green);
  outline-offset: 3px;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-narrow {
  width: 100%;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section-spacing {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

@media (min-width: 768px) {
  .section-spacing {
    padding-top: 7rem;
    padding-bottom: 7rem;
  }
}

.section-spacing-sm {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}

.bg-offwhite {
  background-color: var(--off-white);
}

.bg-dark {
  background-color: var(--slate-900);
  color: var(--slate-200);
}

.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4 {
  color: var(--white);
}

.bg-primary-dark {
  background-color: var(--primary-dark);
  color: rgba(255, 255, 255, 0.9);
}

.bg-primary-dark h1, .bg-primary-dark h2, .bg-primary-dark h3 {
  color: var(--white);
}

/* Section Header Typography */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
}

.section-kicker {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary-green);
  margin-bottom: 0.75rem;
}

.bg-dark .section-kicker,
.bg-primary-dark .section-kicker {
  color: var(--solar-gold);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--slate-500);
  margin-top: 1rem;
}

.bg-dark .section-subtitle,
.bg-primary-dark .section-subtitle {
  color: var(--slate-400);
}

/* ========================================================
   BUTTONS & ACTION CONTROLS (Single-Line, 2:1 Padding)
   ======================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.625rem;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--primary-green);
  color: var(--white);
  box-shadow: 0 2px 8px rgba(13, 122, 70, 0.25);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(13, 122, 70, 0.35);
}

.btn-secondary {
  background-color: transparent;
  color: var(--slate-900);
  border: 1px solid var(--slate-200);
  background-color: var(--white);
}

.btn-secondary:hover {
  background-color: var(--slate-100);
  border-color: var(--slate-400);
  color: var(--slate-900);
}

.btn-gold {
  background-color: var(--solar-gold);
  color: var(--slate-900);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.btn-gold:hover {
  background-color: var(--solar-gold-hover);
  color: var(--slate-900);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.btn-outline-white {
  background-color: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(4px);
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: var(--white);
  color: var(--white);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.95rem 2rem;
  font-size: 1.0625rem;
}

/* ========================================================
   HEADER & STICKY NAVBAR (Top Bar Contract: 3 Zones)
   ======================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 76px;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  transition: all var(--transition-smooth);
}

/* Transparent Header state when overlaying Hero */
.site-header.header-transparent {
  background-color: rgba(15, 23, 42, 0.4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.site-header.header-scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--slate-200);
  box-shadow: var(--shadow-sm);
}

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

/* Zone 1: Brand Wordmark */
.brand-wordmark {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
}

.brand-wordmark img {
  height: 40px;
  width: auto;
  transition: opacity var(--transition-fast);
}

/* Logo Variant Switching */
.brand-wordmark .logo-white {
  display: none;
}

.brand-wordmark .logo-dark {
  display: block;
}

/* On Home Page or Transparent Header: PRESUN is White! */
.header-transparent .brand-wordmark .logo-white,
.page-index .site-header .brand-wordmark .logo-white {
  display: block !important;
}

.header-transparent .brand-wordmark .logo-dark,
.page-index .site-header .brand-wordmark .logo-dark {
  display: none !important;
}

/* Home Page Scrolled Header: Deep luxury green glass to keep PRESUN White */
.page-index .site-header.header-scrolled {
  background-color: rgba(6, 40, 25, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.page-index .site-header.header-scrolled .nav-link {
  color: rgba(255, 255, 255, 0.9);
}

.page-index .site-header.header-scrolled .nav-link:hover,
.page-index .site-header.header-scrolled .nav-link.active {
  color: var(--solar-gold);
}

.page-index .site-header.header-scrolled .nav-link.active::after {
  background-color: var(--solar-gold);
}

.page-index .site-header.header-scrolled .mobile-menu-btn {
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--white);
}

.brand-text-fallback {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--slate-900);
}

.header-transparent:not(.header-scrolled) .brand-text-fallback,
.page-index .brand-text-fallback {
  color: var(--white);
}

/* Zone 2: Navigation Links */
.main-nav {
  display: none;
}

@media (min-width: 992px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: 1.75rem;
  }
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--slate-600);
  text-decoration: none;
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--transition-fast);
}

.header-transparent:not(.header-scrolled) .nav-link {
  color: rgba(255, 255, 255, 0.85);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-green);
}

.header-transparent:not(.header-scrolled) .nav-link:hover,
.header-transparent:not(.header-scrolled) .nav-link.active {
  color: var(--solar-gold);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--primary-green);
  border-radius: 2px;
}

.header-transparent:not(.header-scrolled) .nav-link.active::after {
  background-color: var(--solar-gold);
}

/* Zone 3: Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  color: var(--slate-700);
  cursor: pointer;
}

.header-transparent:not(.header-scrolled) .mobile-menu-btn {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.25);
}

@media (min-width: 992px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* Mobile Navigation Drawer */
.mobile-drawer {
  position: fixed;
  top: 76px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--white);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-smooth);
  z-index: 99;
  border-bottom: 1px solid var(--slate-200);
  overflow-y: auto;
}

.mobile-drawer.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav-link {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--slate-800);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--slate-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mobile-nav-link.active {
  color: var(--primary-green);
}

/* ========================================================
   HERO SECTION
   ======================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  padding-bottom: 5rem;
  background-color: var(--slate-900);
  color: var(--white);
  overflow: hidden;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

/* Solar Panel Video Element */
.hero-video-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 1;
  transform: scale(1.02);
  transition: opacity 0.5s ease;
}

/* AI Cybernetic Particle HUD Canvas */
.hero-ai-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

/* Backdrop Dimming & Gradient Tint */
.hero-video-overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  background: linear-gradient(
    135deg,
    rgba(4, 39, 24, var(--video-overlay-opacity, 0.45)) 0%,
    rgba(15, 23, 42, calc(var(--video-overlay-opacity, 0.45) + 0.25)) 50%,
    rgba(4, 25, 18, calc(var(--video-overlay-opacity, 0.45) + 0.35)) 100%
  );
  pointer-events: none;
  transition: background 0.3s ease;
}

/* Fallback Mesh */
.hero-solar-mesh {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: 
    radial-gradient(ellipse at 85% 20%, rgba(245, 158, 11, 0.22) 0%, transparent 55%),
    radial-gradient(circle at 10% 80%, rgba(13, 122, 70, 0.28) 0%, transparent 60%),
    linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(6, 78, 59, 0.75) 50%, rgba(15, 23, 42, 0.95) 100%);
}

.hero-grid-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.7;
}

/* Floating Solar Ray Visual */
.hero-sun-glow {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 550px;
  height: 550px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.2) 0%, rgba(16, 185, 129, 0.08) 50%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 4;
  animation: pulseSun 8s ease-in-out infinite alternate;
}

/* Floating AI Video Status Panel & Controller */
.hero-ai-status-panel {
  position: absolute;
  bottom: 24px;
  left: 24px;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.4rem 0.8rem;
  border-radius: 9999px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  font-size: 0.75rem;
}

@media (max-width: 640px) {
  .hero-ai-status-panel {
    bottom: 16px;
    left: 16px;
    right: 16px;
    justify-content: space-between;
  }
}

.ai-live-indicator {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #34D399;
}

.ai-live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 10px #10B981;
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.5; }
}

.ai-controls-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-ai-video-toggle {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--white);
  padding: 0.3rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: all var(--transition-fast);
}

.btn-ai-video-toggle:hover {
  background: rgba(16, 185, 129, 0.2);
  border-color: #10B981;
  color: #34D399;
}

.btn-custom-video-trigger {
  background: rgba(16, 185, 129, 0.25);
  border-color: rgba(52, 211, 153, 0.5);
  color: #FFFFFF;
}

.btn-custom-video-trigger:hover {
  background: #10B981;
  color: #FFFFFF;
  border-color: #10B981;
}

.badge-video-muted {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #CBD5E1;
  padding: 0.3rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  user-select: none;
}

/* Custom Hero Video Manager Modal */
.custom-video-modal-card {
  max-width: 680px;
  width: 95%;
  background: #0B1912;
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-xl);
  color: var(--white);
  padding: 2rem;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7);
}

.custom-video-header {
  margin-bottom: 1rem;
}

.custom-video-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--solar-gold);
  text-transform: uppercase;
}

.modal-video-preview-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 1.25rem;
}

.modal-video-preview-wrap video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-video-preview-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #34D399;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.preview-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10B981;
}

.custom-video-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
}

.video-tab-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--slate-300);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.video-tab-btn:hover {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.3);
}

.video-tab-btn.active {
  background: var(--primary-green);
  border-color: var(--primary-green);
  color: var(--white);
}

.video-tab-content {
  display: none;
}

.video-tab-content.active {
  display: block;
}

.video-upload-dropzone {
  border: 2px dashed rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.04);
  border-radius: var(--radius-lg);
  padding: 2.25rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.video-upload-dropzone:hover,
.video-upload-dropzone.dragover {
  border-color: #10B981;
  background: rgba(16, 185, 129, 0.1);
}

.preset-videos-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

@media (max-width: 540px) {
  .preset-videos-grid {
    grid-template-columns: 1fr;
  }
}

.preset-video-item {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.preset-video-item:hover {
  border-color: #10B981;
  background: rgba(16, 185, 129, 0.08);
}

.preset-video-item.active {
  border-color: #10B981;
  background: rgba(16, 185, 129, 0.15);
}

.preset-thumb-title {
  font-weight: 700;
  font-size: 0.875rem;
  color: #34D399;
}

.preset-thumb-sub {
  font-size: 0.75rem;
  color: var(--slate-400);
  margin-top: 0.25rem;
}

.custom-video-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  flex-wrap: wrap;
  gap: 0.75rem;
}

@keyframes pulseSun {
  0% { transform: scale(0.95) translate(0, 0); opacity: 0.7; }
  100% { transform: scale(1.08) translate(-20px, 15px); opacity: 0.95; }
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  align-items: center;
}

@media (min-width: 992px) {
  .hero-content {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.hero-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--solar-gold);
  margin-bottom: 1.25rem;
}

.hero-title {
  color: var(--white);
  margin-bottom: 1.5rem;
  font-weight: 800;
}

.hero-title span.accent-green {
  color: var(--emerald-accent);
}

.hero-description {
  font-size: 1.1875rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 2.25rem;
  max-width: 58ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0;
}

/* Floating Solar Statistics Glass Card */
.hero-visual-card {
  background: rgba(30, 41, 59, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  position: relative;
}

.hero-visual-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-visual-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--white);
}

.hero-status-pill {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--emerald-accent);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--emerald-accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--emerald-accent);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.hero-metric-item {
  padding: 1.125rem;
  background: rgba(15, 23, 42, 0.6);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-metric-val {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--white);
  font-family: 'JetBrains Mono', monospace;
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.25rem;
}

.hero-metric-val.gold { color: var(--solar-gold); }
.hero-metric-val.green { color: var(--emerald-accent); }

.hero-metric-lbl {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--slate-400);
}

/* Scroll Indicator */
.hero-scroll-cue {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.scroll-mouse {
  width: 20px;
  height: 32px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 5px;
}

.scroll-wheel {
  width: 3px;
  height: 6px;
  background-color: var(--solar-gold);
  border-radius: 2px;
  animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ========================================================
   TRUST & STATISTICS COUNTERS SECTION
   ======================================================== */
.stats-section {
  background-color: var(--white);
  border-bottom: 1px solid var(--slate-200);
  box-shadow: var(--shadow-xs);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  padding: 1.5rem 1rem;
  text-align: center;
  position: relative;
}

.stat-card:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 20%;
  right: 0;
  height: 60%;
  width: 1px;
  background-color: var(--slate-200);
}

@media (max-width: 767px) {
  .stat-card:nth-child(2)::after {
    display: none;
  }
}

.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--primary-green);
  line-height: 1;
  margin-bottom: 0.5rem;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-600);
}

/* ========================================================
   ABOUT US SECTION (Two-Column Architectural Layout)
   ======================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  align-items: center;
}

@media (min-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* SVG Illustration & Feature Mockup */
.about-visual-frame {
  position: relative;
  background: linear-gradient(135deg, #064E3B 0%, #0D7A46 100%);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  color: var(--white);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.about-visual-pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 24px 24px;
}

.about-visual-content {
  position: relative;
  z-index: 2;
}

.about-features-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 2rem 0;
}

.about-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.about-feature-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--emerald-light);
  color: var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.about-feature-text h4 {
  font-size: 1.0625rem;
  margin-bottom: 0.25rem;
}

.about-feature-text p {
  font-size: 0.9375rem;
  color: var(--slate-600);
}

/* ========================================================
   SOLAR SOLUTIONS GRID
   ======================================================== */
.solutions-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

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

@media (min-width: 1024px) {
  .solutions-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.solution-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-smooth);
  position: relative;
}

.solution-card:hover {
  transform: translateY(-4px);
  border-color: var(--emerald-border);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(13, 122, 70, 0.1);
}

.solution-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: var(--emerald-light);
  color: var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: all var(--transition-fast);
}

.solution-card:hover .solution-icon-box {
  background-color: var(--primary-green);
  color: var(--white);
}

.solution-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.solution-desc {
  font-size: 0.9375rem;
  color: var(--slate-600);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.solution-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--primary-green);
}

.solution-link svg {
  transition: transform var(--transition-fast);
}

.solution-card:hover .solution-link svg {
  transform: translateX(4px);
}

/* ========================================================
   SERVICES SECTION (Horizontal Steps / Cards)
   ======================================================== */
.services-flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

@media (min-width: 1024px) {
  .services-flow-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-flow-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  transition: all var(--transition-smooth);
}

.service-flow-card:hover {
  border-color: var(--primary-green);
  box-shadow: var(--shadow-md);
}

.service-step-index {
  font-size: 0.8125rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--slate-400);
  margin-bottom: 1rem;
}

.service-flow-card:hover .service-step-index {
  color: var(--primary-green);
}

.service-step-title {
  font-size: 1.1875rem;
  margin-bottom: 0.75rem;
}

.service-step-desc {
  font-size: 0.9375rem;
  color: var(--slate-600);
}

/* ========================================================
   WHY CHOOSE US SECTION
   ======================================================== */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  align-items: center;
}

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

.why-items-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

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

.why-item {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  padding: 1.125rem;
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.why-item:hover {
  border-color: var(--primary-green);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.why-check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--emerald-light);
  color: var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
}

.why-item-text h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.why-item-text p {
  font-size: 0.8125rem;
  color: var(--slate-500);
}

/* Comparison Box */
.comparison-card {
  background-color: var(--slate-900);
  color: var(--white);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
}

.comparison-card h3 {
  color: var(--white);
  margin-bottom: 1.5rem;
  font-size: 1.35rem;
}

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

.comparison-table th,
.comparison-table td {
  padding: 0.875rem 0.5rem;
  font-size: 0.875rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.comparison-table th {
  text-align: left;
  font-weight: 700;
  color: var(--solar-gold);
}

.comparison-table td:first-child {
  color: var(--slate-300);
}

.comparison-table td.brand-col {
  color: var(--emerald-accent);
  font-weight: 600;
}

.comparison-table td.competitor-col {
  color: var(--slate-500);
}

/* ========================================================
   PROJECTS SECTION (Filter Tabs & Showcase Cards)
   ======================================================== */
.project-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.filter-tab {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-600);
  background-color: var(--slate-100);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  background-color: var(--slate-200);
  color: var(--slate-900);
}

.filter-tab.active {
  background-color: var(--primary-green);
  color: var(--white);
  box-shadow: 0 2px 8px rgba(13, 122, 70, 0.25);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

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

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--slate-300);
  box-shadow: var(--shadow-lg);
}

/* Project Visual Container */
.project-image-box {
  position: relative;
  height: 220px;
  background: linear-gradient(135deg, #064E3B 0%, #0F172A 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-category-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.625rem;
  background-color: rgba(15, 23, 42, 0.8);
  color: var(--solar-gold);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.project-capacity-tag {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  font-size: 0.8125rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  padding: 0.25rem 0.625rem;
  background-color: var(--primary-green);
  color: var(--white);
  border-radius: var(--radius-sm);
}

.project-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-title {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.project-location {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  color: var(--slate-500);
  margin-bottom: 1rem;
}

.project-desc {
  font-size: 0.9375rem;
  color: var(--slate-600);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

/* ========================================================
   ENVIRONMENTAL IMPACT SECTION (Animated Green Grid)
   ======================================================== */
.impact-section {
  background: linear-gradient(135deg, #064E3B 0%, #075E37 60%, #0D7A46 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (min-width: 992px) {
  .impact-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.impact-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
}

.impact-card:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-2px);
}

.impact-icon-circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  color: var(--solar-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}

.impact-num {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 0.5rem;
  font-variant-numeric: tabular-nums;
}

.impact-lbl {
  font-size: 0.875rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
}

/* ========================================================
   PRODUCTS SHOWCASE SECTION
   ======================================================== */
.products-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

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

@media (min-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.product-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  border-color: var(--primary-green);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.product-header-box {
  height: 180px;
  background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  position: relative;
}

.product-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-green);
  background-color: var(--emerald-light);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.product-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-name {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.product-model {
  font-size: 0.8125rem;
  font-family: 'JetBrains Mono', monospace;
  color: var(--slate-400);
  margin-bottom: 0.75rem;
}

.product-specs-summary {
  font-size: 0.875rem;
  color: var(--slate-600);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.product-badges {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--slate-500);
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--slate-100);
}

/* ========================================================
   TESTIMONIALS SECTION (Vanilla JS Carousel)
   ======================================================== */
.carousel-wrapper {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  overflow: hidden;
}

.carousel-slides {
  display: flex;
  transition: transform var(--transition-smooth);
}

.testimonial-card {
  min-width: 100%;
  padding: 2.5rem;
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.testimonial-rating {
  display: flex;
  justify-content: center;
  gap: 0.25rem;
  color: var(--solar-gold);
  margin-bottom: 1.25rem;
}

.testimonial-quote {
  font-size: 1.1875rem;
  font-weight: 500;
  line-height: 1.7;
  color: var(--slate-800);
  margin-bottom: 1.75rem;
  font-style: italic;
}

.testimonial-author {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--slate-900);
}

.testimonial-role {
  font-size: 0.875rem;
  color: var(--slate-500);
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.carousel-arrow {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  color: var(--slate-700);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.carousel-arrow:hover {
  background-color: var(--primary-green);
  border-color: var(--primary-green);
  color: var(--white);
}

.carousel-dots {
  display: flex;
  gap: 0.5rem;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--slate-300);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.carousel-dot.active {
  width: 24px;
  border-radius: 10px;
  background-color: var(--primary-green);
}

/* ========================================================
   FULL-WIDTH CALL TO ACTION (CTA) SECTION
   ======================================================== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, #064E3B 0%, #0F172A 100%);
  color: var(--white);
  padding: 5.5rem 1.5rem;
  text-align: center;
  overflow: hidden;
}

.cta-mesh-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.18) 0%, transparent 60%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
}

.cta-heading {
  color: var(--white);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.cta-desc {
  font-size: 1.1875rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2.5rem;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

/* ========================================================
   CONTACT & CONSULTATION SECTION
   ======================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
}

@media (min-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr 1.35fr;
  }
}

.contact-info-card {
  background-color: var(--slate-900);
  color: var(--white);
  border-radius: var(--radius-xl);
  padding: 2.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-lg);
}

.contact-info-card h3 {
  color: var(--white);
  margin-bottom: 1rem;
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin: 2rem 0;
}

.contact-detail-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-detail-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--solar-gold);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-detail-text h5 {
  color: var(--slate-400);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
}

.contact-detail-text p,
.contact-detail-text a {
  color: var(--white);
  font-size: 0.9375rem;
  font-weight: 500;
}

/* Consultation Form Card */
.contact-form-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  padding: 2.75rem;
  box-shadow: var(--shadow-sm);
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

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

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-800);
  margin-bottom: 0.5rem;
}

.form-label .required {
  color: #DC2626;
}

.form-control {
  width: 100%;
  padding: 0.8125rem 1rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--slate-900);
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-green);
  box-shadow: 0 0 0 3px rgba(13, 122, 70, 0.12);
}

textarea.form-control {
  resize: vertical;
  min-height: 110px;
}

/* Live Solar Estimator Widget */
.estimator-widget {
  background-color: var(--emerald-light);
  border: 1px solid var(--emerald-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.estimator-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.estimator-output {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  text-align: center;
  margin-top: 0.75rem;
}

.estimator-metric-val {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--primary-green);
  font-family: 'JetBrains Mono', monospace;
}

.estimator-metric-lbl {
  font-size: 0.75rem;
  color: var(--slate-600);
}

/* Alert Notification */
.alert-box {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-success {
  background-color: #ECFDF5;
  border: 1px solid #A7F3D0;
  color: #065F46;
}

.alert-error {
  background-color: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
}

/* ========================================================
   MODAL DIALOG (Spec Sheet & Project Details)
   ======================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-smooth);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background-color: var(--white);
  border-radius: var(--radius-xl);
  max-width: 680px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.25rem;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform var(--transition-smooth);
}

.modal-backdrop.active .modal-card {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--slate-100);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-600);
}

.modal-close-btn:hover {
  background: var(--slate-200);
  color: var(--slate-900);
}

/* ========================================================
   FOOTER SECTION
   ======================================================== */
.site-footer {
  background-color: var(--slate-900);
  color: var(--slate-400);
  padding-top: 5rem;
  padding-bottom: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

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

@media (min-width: 1024px) {
  .footer-top-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  }
}

.footer-brand p {
  color: var(--slate-400);
  font-size: 0.9375rem;
  margin-top: 1.25rem;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links-list a {
  color: var(--slate-400);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer-links-list a:hover {
  color: var(--white);
}

.footer-newsletter-text {
  font-size: 0.875rem;
  color: var(--slate-400);
  margin-bottom: 1rem;
}

.footer-newsletter-form {
  display: flex;
  gap: 0.5rem;
}

.footer-newsletter-input {
  flex-grow: 1;
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  color: var(--white);
}

.footer-newsletter-input:focus {
  outline: none;
  border-color: var(--emerald-accent);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
}

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

.footer-certifications {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--slate-500);
}

/* ========================================================
   ANIMATION & INTERSECTION OBSERVER UTILITIES
   ======================================================== */
.reveal-fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* Subdued Page Header Banner (for About, Solutions, etc.) */
.page-banner {
  padding-top: 130px;
  padding-bottom: 4rem;
  background: linear-gradient(135deg, #064E3B 0%, #0F172A 100%);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner-title {
  color: var(--white);
  margin-bottom: 0.75rem;
}

.page-banner-subtitle {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}