/* ============================================================
   SmartBridge – Digital Aurora Theme
   Creative, dark-tech aesthetic with neon accents
   ============================================================ */

/* ---------- Custom Properties ---------- */
:root {
  --bg-deep: #060b18;
  --bg-primary: #0d1b2a;
  --bg-card: rgba(15, 30, 55, 0.65);
  --bg-glass: rgba(15, 30, 55, 0.45);
  --accent-cyan: #00f5d4;
  --accent-violet: #7b61ff;
  --accent-orange: #ff6b35;
  --accent-blue: #38bdf8;
  --text-primary: #e2e8f0;
  --text-secondary: #8892b0;
  --text-heading: #ffffff;
  --border-glow: rgba(0, 245, 212, 0.2);
  --shadow-glow: 0 0 30px rgba(0, 245, 212, 0.08);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --nav-height: 72px;
  --section-padding: 120px;
  --max-width: 1280px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

::selection {
  background: var(--accent-cyan);
  color: var(--bg-deep);
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent-cyan); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-violet); }
ul, ol { list-style: none; }

/* ---------- Utility ---------- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section-padding { padding: var(--section-padding) 0; }

.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-warm {
  background: linear-gradient(135deg, var(--accent-orange), #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Section Header ---------- */
.section-header {
  text-align: center;
  margin-bottom: 72px;
  position: relative;
}
.section-header .section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 16px;
  position: relative;
  padding: 6px 20px;
  border: 1px solid var(--border-glow);
  border-radius: 100px;
  background: rgba(0, 245, 212, 0.04);
}
.section-header h2 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.2;
  margin-bottom: 20px;
}
.section-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

/* ---------- Navigation ---------- */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--transition-smooth);
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background: rgba(6, 11, 24, 0.85);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--border-glow);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo img { height: 36px; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  border-radius: 1px;
  transition: width var(--transition-smooth);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-heading); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

/* Language Toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--border-glow);
  border-radius: 100px;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  cursor: pointer;
}
.lang-btn {
  padding: 6px 14px;
  border: none;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
}
.lang-btn.active {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  color: var(--bg-deep);
  box-shadow: 0 2px 12px rgba(0, 245, 212, 0.3);
}
.lang-btn:hover:not(.active) { color: var(--text-heading); }

/* Mobile Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
  background: none;
  border: none;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- Hero Section ---------- */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

/* Animated mesh background */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 245, 212, 0.12) 0%, transparent 70%);
  animation: float-slow 20s ease-in-out infinite;
}
.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123, 97, 255, 0.1) 0%, transparent 70%);
  animation: float-slow 25s ease-in-out infinite reverse;
}

.hero-grid-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.hero-text { max-width: 600px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid var(--border-glow);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--accent-cyan);
  background: rgba(0, 245, 212, 0.05);
  margin-bottom: 28px;
  animation: fadeInUp 0.8s ease-out;
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero-text h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-text .hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 480px;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border: none;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--accent-cyan), #0891b2);
  color: var(--bg-deep);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 20px rgba(0, 245, 212, 0.3);
  font-family: inherit;
  text-decoration: none;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 245, 212, 0.4);
  color: var(--bg-deep);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border: 1px solid var(--border-glow);
  border-radius: 100px;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  text-decoration: none;
}
.btn-outline:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 245, 212, 0.05);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInRight 1s ease-out 0.4s both;
}
.hero-illustration {
  width: 100%;
  max-width: 560px;
  position: relative;
  z-index: 1;
}
.hero-visual::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 245, 212, 0.1) 0%, transparent 70%);
  filter: blur(40px);
  z-index: 0;
}

/* Floating badges on hero */
.hero-float-badge {
  position: absolute;
  padding: 12px 18px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-heading);
  z-index: 3;
  box-shadow: var(--shadow-glow);
  animation: float-badge 6s ease-in-out infinite;
}
.hero-float-badge svg { width: 28px; height: 28px; flex-shrink: 0; }
.hero-float-badge.badge-1 { top: 10%; right: -10%; animation-delay: 0s; }
.hero-float-badge.badge-2 { bottom: 20%; left: -5%; animation-delay: 2s; }
.hero-float-badge.badge-3 { bottom: 5%; right: 5%; animation-delay: 4s; }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  letter-spacing: 2px;
  animation: fadeInUp 1s ease-out 1s both;
  z-index: 2;
}
.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-secondary);
  border-radius: 12px;
  position: relative;
}
.scroll-mouse::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 2px;
  animation: scroll-wheel 2s ease-in-out infinite;
}

/* ---------- About Section ---------- */
#about {
  position: relative;
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-primary) 50%, var(--bg-deep) 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-visual {
  position: relative;
}
.about-illustration {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-lg);
}

.about-text h3 {
  font-size: 1.6rem;
  color: var(--text-heading);
  margin-bottom: 20px;
}
.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.stat-item {
  text-align: center;
  padding: 24px 16px;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
}
.stat-item:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}
.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  display: block;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Mission & Vision Cards */
.mission-vision {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 60px;
}
.mv-card {
  padding: 36px;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-smooth);
}
.mv-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
}
.mv-card.vision::before { background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet)); }
.mv-card.mission::before { background: linear-gradient(90deg, var(--accent-orange), #f59e0b); }
.mv-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.mv-card .mv-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.mv-card.vision .mv-icon { background: rgba(0, 245, 212, 0.1); }
.mv-card.mission .mv-icon { background: rgba(255, 107, 53, 0.1); }
.mv-card .mv-icon svg { width: 24px; height: 24px; }
.mv-card h4 {
  font-size: 1.2rem;
  color: var(--text-heading);
  margin-bottom: 12px;
}
.mv-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ---------- Products / Solutions Section ---------- */
#products {
  position: relative;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  padding: 36px 28px;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-smooth);
  cursor: default;
}
.product-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(0, 245, 212, 0.05) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}
.product-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0, 245, 212, 0.08);
}
.product-card:hover::after { opacity: 1; }

.product-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}
.product-icon svg { width: 28px; height: 28px; }
.product-icon.cyan { background: rgba(0, 245, 212, 0.1); }
.product-icon.violet { background: rgba(123, 97, 255, 0.1); }
.product-icon.orange { background: rgba(255, 107, 53, 0.1); }
.product-icon.blue { background: rgba(56, 189, 248, 0.1); }

.product-card h3 {
  font-size: 1.15rem;
  color: var(--text-heading);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.product-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
  position: relative;
  z-index: 1;
}
.product-card .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
  position: relative;
  z-index: 1;
}
.product-card .tag {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  border: 1px solid rgba(0, 245, 212, 0.15);
  color: var(--accent-cyan);
  background: rgba(0, 245, 212, 0.04);
}

/* ---------- Technology Section ---------- */
#technology {
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-primary) 50%, var(--bg-deep) 100%);
  position: relative;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tech-card {
  padding: 32px;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: all var(--transition-smooth);
}
.tech-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.tech-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: rgba(0, 245, 212, 0.08);
}
.tech-icon svg { width: 24px; height: 24px; }
.tech-card h3 {
  font-size: 1.05rem;
  color: var(--text-heading);
  margin-bottom: 8px;
}
.tech-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ---------- Industries Section ---------- */
#industries { position: relative; }

.industries-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.industry-card {
  text-align: center;
  padding: 32px 16px;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  transition: all var(--transition-smooth);
  cursor: default;
}
.industry-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.industry-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(0, 245, 212, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.industry-icon svg { width: 28px; height: 28px; }
.industry-card h4 {
  font-size: 0.95rem;
  color: var(--text-heading);
  margin-bottom: 8px;
}
.industry-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Values / Stats Section ---------- */
#values {
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-primary) 50%, var(--bg-deep) 100%);
  position: relative;
}

.values-showcase {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.value-card {
  text-align: center;
  padding: 40px 24px;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}
.value-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  opacity: 0;
  transition: opacity var(--transition-smooth);
}
.value-card:hover::before { opacity: 1; }
.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.value-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: rgba(0, 245, 212, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.value-icon svg { width: 32px; height: 32px; }
.value-card h3 {
  font-size: 1.15rem;
  color: var(--text-heading);
  margin-bottom: 10px;
}
.value-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- Process Section ---------- */
#process { position: relative; }

.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.process-timeline::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet), var(--accent-orange), var(--accent-blue));
  opacity: 0.3;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--bg-deep);
  margin: 0 auto 20px;
  box-shadow: 0 4px 20px rgba(0, 245, 212, 0.3);
}
.process-step h4 {
  font-size: 1.05rem;
  color: var(--text-heading);
  margin-bottom: 10px;
}
.process-step p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- Sustainability Section ---------- */
#sustainability {
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-primary) 50%, var(--bg-deep) 100%);
  position: relative;
}

.sustain-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.sustain-visual svg { width: 100%; max-width: 420px; }
.sustain-text h3 {
  font-size: 1.4rem;
  color: var(--text-heading);
  margin-bottom: 16px;
}
.sustain-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.8;
}
.sustain-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}
.sustain-metric {
  padding: 20px;
  border: 1px solid rgba(52, 211, 153, 0.2);
  border-radius: var(--radius-md);
  background: rgba(52, 211, 153, 0.04);
}
.sustain-metric .metric-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: #34d399;
  margin-bottom: 4px;
}
.sustain-metric .metric-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ---------- Contact Section ---------- */
#contact { position: relative; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.contact-info h3 {
  font-size: 1.6rem;
  color: var(--text-heading);
  margin-bottom: 16px;
}
.contact-info>p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.8;
}
.contact-details { display: flex; flex-direction: column; gap: 20px; }
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-item .ci-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(0, 245, 212, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-item .ci-icon svg { width: 20px; height: 20px; }
.contact-item .ci-text strong {
  display: block;
  color: var(--text-heading);
  font-size: 0.9rem;
  margin-bottom: 2px;
}
.contact-item .ci-text span {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.contact-form {
  padding: 40px;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition-fast);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select option { background: var(--bg-primary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ---------- Footer ---------- */
#footer {
  border-top: 1px solid var(--border-glow);
  padding: 60px 0 30px;
  background: var(--bg-deep);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand img { height: 32px; margin-bottom: 16px; }
.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 300px;
}
.footer-col h5 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-heading);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: color var(--transition-fast);
}
.footer-col a:hover { color: var(--accent-cyan); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Staggered children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.stagger-children.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.15s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.25s; }
.stagger-children.visible > * { opacity: 1; transform: translateY(0); }

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes float-slow {
  0%, 100% { transform: translate(0, 0); }
  50%      { transform: translate(30px, -40px); }
}
@keyframes float-badge {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(0.6); }
}
@keyframes scroll-wheel {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(10px); }
}
@keyframes rotate-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes dash-flow {
  to { stroke-dashoffset: -20; }
}

/* Decorative orbiting ring */
.orbit-ring {
  position: absolute;
  border: 1px dashed rgba(0, 245, 212, 0.15);
  border-radius: 50%;
  animation: rotate-slow 60s linear infinite;
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-fast);
  box-shadow: 0 4px 20px rgba(0, 245, 212, 0.3);
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}
.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 245, 212, 0.4);
}
.back-to-top svg { width: 20px; height: 20px; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  :root { --section-padding: 80px; }
  .hero-content { grid-template-columns: 1fr; text-align: center; gap: 40px; }
  .hero-text { max-width: 100%; margin: 0 auto; }
  .hero-text .hero-desc { margin: 0 auto 32px; }
  .hero-actions { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-illustration { max-width: 400px; }
  .hero-float-badge { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-stats { grid-template-columns: repeat(3, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(3, 1fr); }
  .values-showcase { grid-template-columns: repeat(2, 1fr); }
  .process-timeline { grid-template-columns: repeat(2, 1fr); }
  .process-timeline::before { display: none; }
  .sustain-content { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .mission-vision { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --section-padding: 60px; --nav-height: 64px; }
  .nav-links { 
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(6, 11, 24, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 28px;
    z-index: 1000;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.2rem; }
  .hamburger { display: flex; }
  .hero-text h1 { font-size: 2.2rem; }
  .products-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .values-showcase { grid-template-columns: 1fr; }
  .process-timeline { grid-template-columns: 1fr; }
  .section-header { margin-bottom: 48px; }
  .section-header h2 { font-size: 1.8rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-text h1 { font-size: 1.8rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .industries-grid { grid-template-columns: 1fr; }
}

/* ---------- Preloader ---------- */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.6s, visibility 0.6s;
}
.preloader.hidden {
  opacity: 0;
  visibility: hidden;
}
.preloader-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(0, 245, 212, 0.1);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: rotate-slow 1s linear infinite;
}

/* Noise texture overlay */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}