/* =============================================
   AINNA NeuralOps Control & Instrumentation
   Premium Minimalist Industrial Theme
   Day/Night Toggle · Cyan Accent · Responsive
   ============================================= */

/* ----- CSS Variables ----- */
:root {
  /* Day Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f5f7fa;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #00c5ff;
  --accent-hover: #00a8e0;
  --accent-glow: rgba(0, 197, 255, 0.08);
  --accent-border: rgba(0, 197, 255, 0.2);
  --border: #e2e8f0;
  --border-hover: #cbd5e1;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
  --nav-bg: rgba(255,255,255,0.95);
  --nav-border: rgba(0,0,0,0.06);
  --overlay-dark: rgba(15,23,42,0.7);
  --overlay-light: rgba(255,255,255,0.6);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-main: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
}

body.night {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161e;
  --bg-card-hover: #1c1c26;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #00d4ff;
  --accent-hover: #00b8e6;
  --accent-glow: rgba(0, 212, 255, 0.08);
  --accent-border: rgba(0, 212, 255, 0.15);
  --border: #1e1e2e;
  --border-hover: #2d2d42;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
  --nav-bg: rgba(10,10,15,0.95);
  --nav-border: rgba(255,255,255,0.06);
  --overlay-dark: rgba(0,0,0,0.8);
  --overlay-light: rgba(255,255,255,0.03);
}

/* ----- Reset & Base ----- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--accent-hover); }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ----- Utility Classes ----- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}
.section {
  padding: 6rem 0;
}
.section-light {
  background: var(--bg-secondary);
  transition: background var(--transition);
}
.section-dark {
  background: var(--bg-primary);
  transition: background var(--transition);
}
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--accent-border);
  padding: 0.35rem 1rem;
  border-radius: 30px;
  margin-bottom: 1rem;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  margin-bottom: 0.75rem;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}
.btn i { font-size: 0.85rem; }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,197,255,0.25);
}
.btn-secondary {
  background: rgba(255,255,255,0.06);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.btn-accent {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-accent:hover {
  background: var(--accent-glow);
  transform: translateY(-2px);
}
.btn-submit {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition);
}
.btn-submit:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,197,255,0.25);
}

/* ----- Navbar ----- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--nav-border);
  transition: background var(--transition), border-color var(--transition);
}
.navbar.scrolled {
  box-shadow: var(--shadow-md);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 68px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
}
.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-size: 0.9rem;
}
.logo-text { letter-spacing: -0.3px; }
.logo-accent { color: var(--accent); }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}
.nav-link {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  position: relative;
}
.nav-link:hover, .nav-link.active {
  color: var(--accent);
  background: var(--accent-glow);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* Nav Controls */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.5rem;
  padding-left: 1rem;
  border-left: 1px solid var(--border);
}
.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: all var(--transition);
}
.theme-toggle-btn:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}
body.night .theme-toggle-btn .fa-sun { display: none; }
body.night .theme-toggle-btn .fa-moon { display: none; }
body.day .theme-toggle-btn .fa-moon { display: none; }

/* Globe Dropdown */
.globe-dropdown {
  position: relative;
}
.globe-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: all var(--transition);
  cursor: pointer;
  padding: 0;
}
.globe-btn:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}
.globe-icon {
  width: 18px;
  height: 18px;
}
.globe-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  overflow: hidden;
  z-index: 100;
}
.globe-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.globe-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.globe-item:hover {
  background: var(--accent-glow);
  color: var(--accent);
}
.lang-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 24px;
  background: var(--bg-secondary);
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
}
.lang-name { color: var(--text-primary); }

/* Demo Button */
.demo-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}
.demo-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}
.hamburger .bar {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active .bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active .bar:nth-child(2) {
  opacity: 0;
}
.hamburger.active .bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ----- Hero Section ----- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 68px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--bg-secondary);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.5;
}
.hero-wafer {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0.6;
}
.hero-wafer::before {
  content: '';
  position: absolute;
  inset: 50px;
  border-radius: 50%;
  border: 2px dashed var(--accent-border);
  animation: rotate 60s linear infinite;
}
.hero-wafer::after {
  content: '';
  position: absolute;
  inset: 100px;
  border-radius: 50%;
  border: 1px solid var(--accent-border);
  opacity: 0.5;
}
@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.hero-glow {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  opacity: 0.1;
  filter: blur(60px);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    var(--bg-primary) 0%,
    transparent 20%,
    transparent 80%,
    var(--bg-primary) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--text-primary);
  padding: 2rem;
  max-width: 900px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--accent-border);
  padding: 0.4rem 1rem;
  border-radius: 30px;
  margin-bottom: 2rem;
}
.hero-title {
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 1.5rem;
}
.hero-title-main {
  display: block;
  color: var(--text-primary);
}
.hero-title-sub {
  display: block;
  color: var(--accent);
  font-size: 0.65em;
  letter-spacing: -1px;
  margin-top: 0.25rem;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ----- Features Grid (About Section) ----- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(20px);
}
.feature-card.visible {
  opacity: 1;
  transform: translateY(0);
}
.feature-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}
.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
  stroke-width: 1.5;
}
.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ----- Equipment Section ----- */
.equipment-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}
.eq-tab {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.5rem 1.25rem;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition);
}
.eq-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.eq-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Equipment Scroller */
.equipment-scroller {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding: 1.5rem 0.5rem;
  scroll-behavior: smooth;
  -ms-overflow-style: none;
  scrollbar-width: none;
  cursor: grab;
  user-select: none;
}
.equipment-scroller::-webkit-scrollbar { display: none; }
.equipment-scroller:active { cursor: grabbing; }
.eq-card {
  flex: none;
  width: 240px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(20px);
}
.eq-card.visible {
  opacity: 1 !important;
  transform: translateY(0) !important;
}
.eq-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.eq-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  transform: scaleX(0);
  transition: transform var(--transition);
}
.eq-card:hover::before {
  transform: scaleX(1);
}
.eq-card-inner {
  position: relative;
}
.eq-icon-box {
  width: 56px;
  height: 56px;
  background: var(--accent-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.eq-icon-box svg {
  width: 28px;
  height: 28px;
  color: var(--accent);
  stroke-width: 1.5;
}
.eq-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}
.eq-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}
.eq-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
}

/* Scroller Controls */
.scroller-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.scroller-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: all var(--transition);
}
.scroller-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}
.scroller-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ----- Architecture Section ----- */
.arch-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  padding: 2rem 0;
}
.arch-node {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  width: 160px;
  transition: all var(--transition);
}
.arch-node:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.arch-node.highlight {
  border-color: var(--accent);
  background: var(--accent-glow);
}
.arch-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.75rem;
}
.arch-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
}
.arch-icon.pulse svg {
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.arch-node h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}
.arch-node p {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}
.arch-arrow {
  color: var(--accent);
  font-size: 1rem;
  opacity: 0.5;
  flex-shrink: 0;
}

/* Architecture Features */
.arch-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}
.arch-feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(20px);
}
.arch-feature.visible {
  opacity: 1;
  transform: translateY(0);
}
.arch-feature:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}
.arch-feature-icon {
  width: 56px;
  height: 56px;
  background: var(--accent-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 1.3rem;
  color: var(--accent);
}
.arch-feature h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.arch-feature p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ----- Use Cases Section ----- */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}
.usecase-card {
  display: flex;
  gap: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(20px);
}
.usecase-card.visible {
  opacity: 1;
  transform: translateY(0);
}
.usecase-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.usecase-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
  color: var(--accent);
}
.usecase-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.usecase-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ----- Safety Section ----- */
.safety-wrapper {
  display: flex;
  align-items: stretch;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.safety-main {
  flex: 1;
  min-width: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}
.safety-icon-box {
  width: 64px;
  height: 64px;
  background: var(--accent-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 1.5rem;
  color: var(--accent);
}
.safety-icon-box.adds {
  background: var(--accent);
  color: #fff;
}
.safety-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.safety-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.safety-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0 1rem;
}
.safety-line {
  width: 2px;
  flex: 1;
  background: var(--border);
  min-height: 40px;
}
.safety-plus {
  width: 32px;
  height: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.9rem;
}
.safety-systems {
  flex: 1.5;
  min-width: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.safety-systems h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  text-align: center;
}
.safety-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.safety-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}
.safety-item:last-child { border-bottom: none; }
.safety-item i { color: var(--accent); font-size: 0.9rem; flex-shrink: 0; }
.safety-adds {
  flex: 1.5;
  min-width: 280px;
  background: var(--accent-glow);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  gap: 1rem;
}
.safety-adds-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.safety-adds-list li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.safety-adds-list li i {
  color: var(--accent);
  font-size: 0.7rem;
}

/* Safety Warning */
.safety-warning {
  display: flex;
  gap: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.safety-warning > i {
  color: var(--accent);
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.safety-warning h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}
.safety-warning p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ----- Contact Section ----- */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3rem;
  align-items: start;
}
.contact-info h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}
.contact-info > p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.contact-item i {
  width: 40px;
  height: 40px;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 0.95rem;
  flex-shrink: 0;
}
.contact-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.15rem;
}
.contact-value {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.form-group.full {
  grid-column: 1 / -1;
  margin-bottom: 1.25rem;
}
.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ----- Footer ----- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}
.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.footer-brand .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  margin-bottom: 0.75rem;
}
.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.footer-links h4 {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}
.footer-links a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); }
.footer-links a i { margin-right: 0.4rem; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-style: italic;
}

/* ----- Responsive ----- */
@media (max-width: 1024px) {
  .arch-flow {
    flex-direction: column;
  }
  .arch-arrow {
    transform: rotate(90deg);
  }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  .safety-wrapper {
    flex-direction: column;
  }
  .safety-divider {
    flex-direction: row;
    padding: 0.5rem 0;
  }
  .safety-line {
    width: auto;
    height: 2px;
    flex: 1;
  }
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-menu {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 1rem;
    gap: 0.25rem;
    border-bottom: 1px solid var(--nav-border);
    display: none;
    max-height: calc(100vh - 68px);
    overflow-y: auto;
  }
  .nav-menu.active { display: flex; }
  .nav-link { width: 100%; padding: 0.75rem 1rem; }
  .nav-controls {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 0;
    border-left: none;
    border-top: 1px solid var(--border);
    margin-left: 0;
    margin-top: 0.5rem;
  }
  .hero-title { font-size: 2.5rem; }
  .hero-cta { flex-direction: column; align-items: center; }
  .form-row { grid-template-columns: 1fr; }
  .usecases-grid { grid-template-columns: 1fr; }
  .footer-content { grid-template-columns: 1fr; }
  .scroller-controls { gap: 1rem; }
  .equipment-tabs { gap: 0.4rem; }
  .eq-tab { padding: 0.4rem 0.8rem; font-size: 0.8rem; }
}
@media (max-width: 480px) {
  .container { padding: 0 1rem; }
  .section { padding: 4rem 0; }
  .hero { min-height: 90vh; }
  .hero-title { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }
  .btn { padding: 0.7rem 1.25rem; font-size: 0.85rem; }
  .features-grid { grid-template-columns: 1fr; }
  .eq-card { width: 200px; }
}


/* ----- Contact Section ----- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}
.contact-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all 0.3s ease;
}
.contact-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  border-color: var(--accent);
}
.contact-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  background: var(--bg-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--text-primary);
}
.contact-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}
.contact-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}
.contact-card .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}
/* ----- Scroll Animations ----- */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
[data-animate].visible {
  opacity: 1 !important;
  transform: translateY(0) !important;
}
}
.section-header {
  animation: fadeInUp 0.6s ease forwards;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ----- Page Transition ----- */
body {
  opacity: 0;
  transition: opacity 0.3s ease;
}
body.loaded {
  opacity: 1;
}