/* Horizon Home Lifts (H2L) - Enterprise AI-Native Design System */
/* Theme: Pristine White & Deep Slate with Futuristic Titanium Ice-Cyan Accent & Tab Effect Header */
@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,300;0,400;0,500;0,700;0,900;1,400&display=swap');

:root {
  --bg-main: #FFFFFF;
  --bg-soft: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FFFFFF;
  --bg-dark-slice: #0F172A;
  
  /* Futuristic Titanium Ice-Cyan & Sapphire Palette */
  --gold-primary: #00D2FF;
  --gold-light: #70E4FF;
  --gold-dark: #2563EB;
  --gold-glow: rgba(0, 210, 255, 0.25);
  --gold-gradient: linear-gradient(135deg, #00E5FF 0%, #3A86FF 100%);
  
  --slate-dark: #0F172A;
  --slate-body: #334155;
  --slate-muted: #64748B;
  --slate-light: #E2E8F0;

  --text-main: #0F172A;
  --text-muted: #475569;
  --text-dim: #94A3B8;
  
  --border-gold: rgba(0, 210, 255, 0.4);
  --border-subtle: rgba(226, 232, 240, 0.8);
  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 20px 40px rgba(15, 23, 42, 0.12), 0 0 20px rgba(0, 210, 255, 0.2);

  --font-serif: 'Roboto', -apple-system, sans-serif;
  --font-brand: 'Roboto', -apple-system, sans-serif;
  --font-sans: 'Roboto', -apple-system, sans-serif;

  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
}

/* Base resets & typography */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  overflow-x: hidden;
}

body {
  line-height: 1.65;
  font-family: 'Roboto', -apple-system, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-soft);
}
::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--gold-primary);
}

/* Typography Helpers */
.font-serif { 
  font-family: 'Roboto', sans-serif;
  font-weight: 700;
}

.text-gold {
  color: var(--gold-primary);
}
.text-gold-gradient {
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
  outline: none;
  border: none;
}

.btn-slate {
  background: var(--slate-dark);
  color: #FFFFFF;
  border: 1px solid var(--slate-dark);
  box-shadow: 0 4px 15px rgba(15, 23, 42, 0.15);
}
.btn-slate:hover {
  background: #1E293B;
  border-color: var(--gold-primary);
  color: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.25);
}

.btn-gold {
  background: var(--gold-gradient);
  color: #0F172A;
  font-weight: 900;
  box-shadow: 0 4px 20px rgba(0, 210, 255, 0.35);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 210, 255, 0.5);
  filter: brightness(1.05);
}

.btn-outline-slate {
  background: transparent;
  color: var(--slate-dark);
  border: 1px solid var(--slate-dark);
}
.btn-outline-slate:hover {
  border-color: var(--gold-primary);
  color: var(--gold-primary);
  background: rgba(0, 210, 255, 0.08);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 11px;
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Top Announcement Banner */
.announcement-bar {
  background: var(--slate-dark);
  color: #FFFFFF;
  font-family: 'Roboto', sans-serif;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 10px 16px;
  text-align: center;
  font-weight: 700;
  border-bottom: 2px solid var(--gold-primary);
}

/* Header Navbar with Sleek Tab Effect */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition-smooth);
  padding: 14px 0;
}
.navbar.scrolled {
  padding: 10px 0;
  background: #FFFFFF;
  border-bottom: 2px solid var(--gold-primary);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}
.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}
.brand-logo img {
  height: 75px;
  width: auto;
  background: #FFFFFF;
  border: 1.5px solid var(--border-gold);
  border-radius: 10px;
  padding: 4px 8px;
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.15);
  object-fit: contain;
  transition: transform 0.3s ease;
}
.brand-logo:hover img {
  transform: scale(1.04);
}
.footer-brand .brand-logo img {
  height: 75px;
  background: #FFFFFF;
  padding: 6px 10px;
  border-radius: 10px;
  border: 1.5px solid var(--gold-primary);
}
.brand-title {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.brand-title-main {
  font-family: 'Roboto', sans-serif;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.12em;
  color: var(--slate-dark);
  line-height: 1.1;
}
.brand-title-sub {
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--gold-primary);
  text-transform: uppercase;
  font-weight: 800;
  line-height: 1.2;
  margin-top: 2px;
}
.brand-division {
  font-size: 11px;
  color: var(--slate-muted);
  letter-spacing: 0.02em;
  font-weight: 600;
  line-height: 1.2;
  margin-top: 2px;
}

/* Header Navigation Bar with Modern Tab Effect */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  background: var(--bg-soft);
  padding: 4px 6px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
}
.nav-link {
  font-family: 'Roboto', sans-serif;
  color: var(--slate-body);
  text-decoration: none;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  transition: var(--transition-smooth);
  display: inline-block;
}
.nav-link:hover {
  color: var(--slate-dark);
  background: rgba(0, 210, 255, 0.1);
}
.nav-link.active {
  color: #0F172A;
  background: #FFFFFF;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
  border: 1px solid var(--border-gold);
}

/* Mobile Nav Toggle Button */
.mobile-nav-btn {
  display: none;
  background: var(--bg-soft);
  border: 1px solid var(--border-subtle);
  color: var(--slate-dark);
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  font-size: 20px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}
.mobile-nav-btn:hover {
  border-color: var(--gold-primary);
  color: var(--gold-primary);
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 80px 0 100px;
  background: linear-gradient(135deg, #F8FAFC 0%, #FFFFFF 100%);
  overflow: hidden;
}
.hero-geometric-slice {
  position: absolute;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  background: var(--slate-dark);
  clip-path: polygon(25% 0%, 100% 0%, 100% 100%, 0% 100%);
  z-index: 1;
}
.hero-geometric-slice::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 60% 40%, rgba(0, 210, 255, 0.18) 0%, transparent 60%);
}
.hero-border-line {
  position: absolute;
  top: 0;
  right: 0;
  width: 55.5%;
  height: 100%;
  background: var(--gold-primary);
  clip-path: polygon(24.5% 0%, 25.5% 0%, 0.5% 100%, 0% 100%);
  z-index: 2;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 5;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: #FFFFFF;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-full);
  color: var(--gold-dark);
  font-family: 'Roboto', sans-serif;
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.05);
}
.hero-title {
  font-family: 'Roboto', sans-serif;
  font-size: 46px;
  line-height: 1.18;
  font-weight: 900;
  margin-bottom: 20px;
  color: var(--slate-dark);
}
.hero-desc {
  font-size: 15px;
  color: var(--slate-body);
  max-width: 540px;
  margin-bottom: 32px;
  font-weight: 400;
  line-height: 1.7;
}
.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-right-card {
  color: #FFFFFF;
  padding: 36px;
}
.hero-right-card h3 {
  font-family: 'Roboto', sans-serif;
  font-size: 24px;
  color: var(--gold-light);
  margin-bottom: 12px;
  font-weight: 700;
}
.hero-right-card p {
  color: #CBD5E1;
  font-size: 13px;
  margin-bottom: 24px;
  line-height: 1.6;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.stat-card {
  padding: 16px;
  border-left: 3px solid var(--gold-primary);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
}
.stat-val {
  font-family: 'Roboto', sans-serif;
  font-size: 22px;
  font-weight: 900;
  color: var(--gold-light);
}
.stat-lbl {
  font-family: 'Roboto', sans-serif;
  font-size: 9px;
  color: #94A3B8;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
}

/* Feature Badges Strip */
.badges-strip {
  padding: 24px 0;
  background: #FFFFFF;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.badges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}
.badge-item {
  display: flex;
  align-items: center;
  gap: 12px;
}
.badge-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-soft);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-primary);
  font-size: 16px;
  flex-shrink: 0;
}
.badge-text-title {
  font-family: 'Roboto', sans-serif;
  font-size: 12px;
  font-weight: 700;
  color: var(--slate-dark);
}
.badge-text-desc {
  font-size: 10px;
  color: var(--slate-muted);
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}
.section-subtitle {
  font-family: 'Roboto', sans-serif;
  color: var(--gold-primary);
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 8px;
}
.section-title {
  font-family: 'Roboto', sans-serif;
  font-size: 36px;
  font-weight: 900;
  color: var(--slate-dark);
  line-height: 1.25;
  margin-bottom: 16px;
}
.section-divider {
  width: 60px;
  height: 3px;
  background: var(--gold-gradient);
  margin: 0 auto 18px;
}
.section-desc {
  color: var(--slate-body);
  font-size: 14px;
  line-height: 1.7;
}

/* Architectural Placement Grid */
.placement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 36px;
}
.placement-card {
  padding: 26px;
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  transition: var(--transition-smooth);
  border-top: 3px solid var(--gold-primary);
}
.placement-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--gold-primary);
}
.placement-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--slate-dark);
  color: var(--gold-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 18px;
}
.placement-title {
  font-family: 'Roboto', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--slate-dark);
  margin-bottom: 6px;
}
.placement-subtitle {
  font-size: 10px;
  color: var(--gold-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 12px;
}
.placement-desc {
  font-size: 12px;
  color: var(--slate-body);
  line-height: 1.6;
}

/* Technical Specification Matrix Table Wrapper */
.table-responsive-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-top: 24px;
}
.spec-matrix-table {
  width: 100%;
  min-width: 650px;
  border-collapse: collapse;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-gold);
}
.spec-matrix-table th {
  background: var(--slate-dark);
  color: var(--gold-light);
  font-family: 'Roboto', sans-serif;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 16px 20px;
  text-align: left;
}
.spec-matrix-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 12px;
  color: var(--slate-body);
}
.spec-matrix-table tr:hover td {
  background: var(--bg-soft);
}

/* Product Series Grid */
.products-section {
  padding: 90px 0;
  background: var(--bg-soft);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}
.product-card {
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.product-img-wrapper {
  position: relative;
  height: 240px;
  overflow: hidden;
}
.product-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.product-card:hover .product-img-wrapper img {
  transform: scale(1.08);
}
.product-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 4px 12px;
  background: var(--slate-dark);
  border: 1px solid var(--gold-primary);
  color: var(--gold-light);
  font-family: 'Roboto', sans-serif;
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  font-weight: 700;
}
.product-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.product-name {
  font-family: 'Roboto', sans-serif;
  font-size: 20px;
  color: var(--slate-dark);
  margin-bottom: 4px;
  font-weight: 700;
}
.product-headline {
  font-family: 'Roboto', sans-serif;
  font-size: 10px;
  color: var(--gold-primary);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  font-weight: 700;
  text-transform: uppercase;
}
.product-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}
.spec-item {
  font-size: 11px;
}
.spec-key {
  color: var(--slate-muted);
  text-transform: uppercase;
  font-family: 'Roboto', sans-serif;
  font-size: 9px;
  letter-spacing: 0.1em;
}
.spec-val {
  color: var(--slate-dark);
  font-weight: 700;
}

/* Configurator Section */
.configurator-section {
  padding: 90px 0;
  background: #FFFFFF;
}
.configurator-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  padding: 36px;
  background: var(--bg-soft);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.config-options {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.config-group-title {
  font-family: 'Roboto', sans-serif;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--slate-dark);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
}
.config-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.config-pill {
  padding: 10px 16px;
  border: 1px solid var(--border-subtle);
  background: #FFFFFF;
  color: var(--slate-body);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 11px;
  font-family: 'Roboto', sans-serif;
  font-weight: 500;
  transition: var(--transition-smooth);
}
.config-pill:hover, .config-pill.active {
  border-color: var(--gold-primary);
  color: var(--slate-dark);
  background: rgba(0, 210, 255, 0.12);
  font-weight: 700;
}

.config-preview {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-left: 1px solid var(--border-subtle);
  padding-left: 36px;
}
.visualizer-display {
  height: 260px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-gold);
  background-size: cover;
  background-position: center;
  position: relative;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
  transition: var(--transition-smooth);
}
.visualizer-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(15, 23, 42, 0.9) 100%);
  display: flex;
  align-items: flex-end;
  padding: 18px;
}

.price-estimate-box {
  margin-top: 16px;
  padding: 20px;
  background: #FFFFFF;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
}

/* Form Styles */
.form-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 14px;
}
.form-label {
  font-family: 'Roboto', sans-serif;
  font-size: 10px;
  color: var(--slate-dark);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
}
.form-input, .form-select {
  padding: 11px 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--slate-dark);
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  outline: none;
  transition: var(--transition-smooth);
  width: 100%;
}
.form-input:focus, .form-select:focus {
  border-color: var(--gold-primary);
  background: #FFFFFF;
  box-shadow: 0 0 10px var(--gold-glow);
}

/* FAQ Accordion */
.faq-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #FFFFFF;
  box-shadow: var(--shadow-card);
}
.faq-question {
  padding: 18px 22px;
  font-family: 'Roboto', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--slate-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-question:hover {
  color: var(--gold-primary);
}
.faq-answer {
  padding: 0 22px 20px;
  font-size: 13px;
  color: var(--slate-body);
  display: none;
  line-height: 1.65;
}
.faq-item.open .faq-answer {
  display: block;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-backdrop.active {
  display: flex;
}
.modal-card {
  max-width: 600px;
  width: 100%;
  padding: 32px;
  position: relative;
  background: #FFFFFF;
  border-top: 4px solid var(--gold-primary);
  border-radius: var(--radius-md);
  box-shadow: 0 25px 50px rgba(15, 23, 42, 0.25);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: transparent;
  border: none;
  color: var(--slate-muted);
  font-size: 22px;
  cursor: pointer;
}
.modal-close:hover {
  color: var(--gold-primary);
}

/* Floating AI Chat & WhatsApp Buttons */
.ai-chat-trigger {
  position: fixed;
  bottom: 86px;
  right: 20px;
  z-index: 998;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--slate-dark);
  border: 2px solid var(--gold-primary);
  color: var(--gold-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.3);
  cursor: pointer;
  transition: var(--transition-smooth);
}
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #25D366;
  color: #FFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.ai-chat-window {
  position: fixed;
  bottom: 146px;
  right: 20px;
  z-index: 1050;
  width: 360px;
  max-width: 90vw;
  height: 480px;
  background: #FFFFFF;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.25);
  display: none;
  flex-direction: column;
  overflow: hidden;
}
.ai-chat-window.active {
  display: flex;
}
.ai-chat-header {
  padding: 14px 16px;
  background: var(--slate-dark);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.ai-chat-messages {
  flex: 1;
  padding: 14px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg-soft);
}
.chat-msg {
  max-width: 86%;
  padding: 10px 14px;
  font-size: 12px;
  border-radius: var(--radius-sm);
  line-height: 1.5;
}
.chat-msg.bot {
  background: #FFFFFF;
  color: var(--slate-dark);
  border: 1px solid var(--border-subtle);
  align-self: flex-start;
}
.chat-msg.user {
  background: var(--slate-dark);
  color: #FFFFFF;
  align-self: flex-end;
}

/* Footer */
.footer {
  padding: 70px 0 35px;
  border-top: 2px solid var(--gold-primary);
  background: var(--slate-dark);
  color: #FFFFFF;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 36px;
  margin-bottom: 50px;
}
.footer-brand p {
  color: #94A3B8;
  font-size: 12px;
  margin: 14px 0;
  max-width: 300px;
  line-height: 1.6;
}
.footer-title {
  font-family: 'Roboto', sans-serif;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gold-light);
  margin-bottom: 18px;
  font-weight: 700;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  color: #CBD5E1;
  text-decoration: none;
  font-size: 12px;
  transition: var(--transition-smooth);
}
.footer-links a:hover {
  color: var(--gold-light);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: #64748B;
  flex-wrap: wrap;
  gap: 10px;
}

/* ==========================================================================
   COMPREHENSIVE MOBILE RESPONSIVENESS & TOUCH OVERHAUL
   ========================================================================== */

@media (max-width: 1100px) {
  .nav-link {
    padding: 7px 12px;
    font-size: 10px;
  }
  .hero-title {
    font-size: 38px;
  }
}

@media (max-width: 992px) {
  /* Mobile Navigation Drawer */
  .mobile-nav-btn {
    display: flex;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #FFFFFF;
    flex-direction: column;
    padding: 20px;
    border-bottom: 2px solid var(--gold-primary);
    box-shadow: 0 15px 35px rgba(15, 23, 42, 0.15);
    border-radius: 0;
    gap: 10px;
  }
  .nav-menu.active {
    display: flex;
  }
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px 16px;
    font-size: 12px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-geometric-slice, .hero-border-line {
    display: none;
  }
  .hero-right-card {
    background: var(--slate-dark);
    border-radius: var(--radius-md);
  }

  .configurator-box {
    grid-template-columns: 1fr;
    padding: 24px;
  }
  .config-preview {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--border-subtle);
    padding-top: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 32px;
  }
  .hero-desc {
    font-size: 14px;
  }
  .section-title {
    font-size: 28px;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .badges-grid {
    grid-template-columns: 1fr 1fr;
  }

  .placement-grid, .products-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .modal-card {
    padding: 24px;
  }

  .ai-chat-window {
    right: 5%;
    width: 90vw;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .hero-title {
    font-size: 26px;
  }
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }
  .hero-cta .btn {
    width: 100%;
  }

  .badges-grid {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .config-pill {
    width: 100%;
    text-align: center;
  }

  .price-estimate-box div[style*="display: flex"] {
    flex-direction: column;
  }

  .ai-chat-trigger, .whatsapp-float {
    width: 44px;
    height: 44px;
    font-size: 18px;
  }
  .ai-chat-trigger {
    bottom: 74px;
  }
}

/* ==========================================================================
   ELEGANT ANIMATIONS & ULTRA-PREMIUM AESTHETIC ENHANCEMENTS
   ========================================================================== */

/* 1. Scroll-Triggered Reveal Animations */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(35px);
  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-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Delay cascades */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* 2. Shimmer & Glow Effects on Primary Buttons */
.btn-gold, .btn-slate {
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.15);
  transition: var(--transition-smooth);
}
.btn-gold::after, .btn-slate::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    60deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.4) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(25deg);
  animation: shimmerSweep 4s infinite ease-in-out;
  pointer-events: none;
}

@keyframes shimmerSweep {
  0% { left: -70%; }
  30% { left: 130%; }
  100% { left: 130%; }
}

.btn-gold:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 25px rgba(0, 210, 255, 0.35);
}

/* 3. Luxury Card Hover & 3D Tilt Glow */
.placement-card, .product-card, .feature-card, .hero-right-card {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s ease;
}

.placement-card:hover, .product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12), 0 0 25px rgba(0, 210, 255, 0.25);
  border-color: var(--gold-primary) !important;
}

/* 4. Interactive Vertical Elevator Motion Simulator in Configurator */
.elevator-simulator-container {
  display: flex;
  gap: 20px;
  align-items: center;
  margin-top: 15px;
  background: #0F172A;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-gold);
}

.elevator-shaft-track {
  width: 45px;
  height: 220px;
  background: rgba(255, 255, 255, 0.05);
  border: 1.5px solid var(--border-gold);
  border-radius: 8px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 6px;
}

.elevator-floor-indicator {
  font-size: 9px;
  font-weight: 800;
  color: #64748B;
  text-align: center;
  transition: color 0.3s ease;
}
.elevator-floor-indicator.active-floor {
  color: #00D2FF;
  text-shadow: 0 0 8px rgba(0, 210, 255, 0.8);
}

.elevator-cabin-moving {
  position: absolute;
  left: 5px;
  right: 5px;
  height: 40px;
  background: linear-gradient(135deg, #00D2FF 0%, #2563EB 100%);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 800;
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.7);
  transition: bottom 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
  bottom: 6px;
}

/* 5. Stat Counter Pulse */
.stat-val {
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 900;
  transition: transform 0.3s ease;
}
.stat-card:hover .stat-val {
  transform: scale(1.08);
}

/* 6. Subtle Floating Hero Image Animation */
.hero-right-card img {
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-right-card:hover img {
  transform: scale(1.03);
}

/* 7. Multilingual Language Switcher Toggle */
.lang-toggle-btn {
  background: var(--bg-soft);
  border: 1px solid var(--border-gold);
  color: var(--slate-dark);
  font-family: 'Roboto', sans-serif;
  font-size: 11px;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-smooth);
}
.lang-toggle-btn:hover {
  background: var(--gold-primary);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(0, 210, 255, 0.3);
}

/* 8. Interactive 360° Cabin Panorama Viewer Overlay */
.visualizer-display {
  position: relative;
  background-size: cover;
  background-position: center;
  transition: background-image 0.5s ease-in-out;
  user-select: none;
}
.visualizer-display.panorama-active {
  cursor: grab;
  background-repeat: repeat-x;
}
.visualizer-display.panorama-active:active {
  cursor: grabbing;
}
.panorama-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid var(--gold-primary);
  color: #FFFFFF;
  font-size: 10px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  z-index: 10;
  cursor: pointer;
  transition: all 0.3s ease;
}
.panorama-badge:hover {
  transform: scale(1.05);
  background: var(--gold-primary);
  color: #0F172A;
}

/* 9. Live Webhook Submission Spinner */
.btn-loading {
  opacity: 0.7;
  pointer-events: none;
}
.btn-loading i {
  animation: spin 1s infinite linear;
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}