/* ==========================================================================
   8FO Global Design System — AI-Era Global Trade Platform
   Version: 1.0
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
  /* Backgrounds */
  --bg-deep: #060b1a;
  --bg-mid: #0d1530;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);

  /* Gold Palette */
  --gold: #c8922a;
  --gold2: #e8c55a;
  --gold-glow: rgba(200, 146, 42, 0.15);

  /* Text */
  --text: #e8e4dc;
  --text-dim: rgba(255, 255, 255, 0.5);
  --text-muted: rgba(255, 255, 255, 0.35);

  /* Glass & Surfaces */
  --glass: rgba(255, 255, 255, 0.06);
  --glass-strong: rgba(255, 255, 255, 0.1);
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(200, 146, 42, 0.4);

  /* Radii */
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;

  /* Accent Colors */
  --navy: #0f1629;
  --danger: #e74c3c;
  --success: #27ae60;

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing Scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-base: 300ms;
  --duration-slow: 500ms;
}

/* --------------------------------------------------------------------------
   Light Theme — Automatic via prefers-color-scheme
   -------------------------------------------------------------------------- */
@media (prefers-color-scheme: light) {
  :root {
    --bg-deep: #f5f6fa;
    --bg-mid: #e8ecf1;
    --bg-card: rgba(0, 0, 0, 0.03);
    --bg-card-hover: rgba(0, 0, 0, 0.06);

    --gold: #a07620;
    --gold2: #c8922a;
    --gold-glow: rgba(160, 118, 32, 0.12);

    --text: #1a1a2e;
    --text-dim: rgba(0, 0, 0, 0.55);
    --text-muted: rgba(0, 0, 0, 0.40);

    --glass: rgba(0, 0, 0, 0.04);
    --glass-strong: rgba(0, 0, 0, 0.08);
    --border: rgba(0, 0, 0, 0.10);
    --border-focus: rgba(160, 118, 32, 0.45);

    --navy: #e8ecf1;
  }

  body {
    background: var(--bg-deep);
  }

  .nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.10);
  }

  .glass-card:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.10);
  }

  .hero {
    background:
      radial-gradient(ellipse 80% 60% at 50% 0%, rgba(160, 118, 32, 0.08), transparent),
      radial-gradient(ellipse 60% 50% at 50% 100%, rgba(160, 118, 32, 0.06), transparent),
      var(--bg-deep);
  }
}

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

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   Container
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

/* --------------------------------------------------------------------------
   Typography Utilities
   -------------------------------------------------------------------------- */
.text-gold {
  background: linear-gradient(135deg, var(--gold2), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-center {
  text-align: center;
}

.text-dim {
  color: var(--text-dim);
}

.text-muted {
  color: var(--text-muted);
}

.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Spacing Utilities
   -------------------------------------------------------------------------- */
.mt-0  { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }

.mb-0  { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }

/* --------------------------------------------------------------------------
   Navigation — Glass Morphism
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  background: transparent;
  transition:
    background var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    backdrop-filter var(--duration-base) var(--ease-out);
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
}

.nav.scrolled .nav-logo {
  background: linear-gradient(135deg, #c8922a, #a07620);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav.scrolled .nav-link {
  color: #1a1a2e;
}

.nav.scrolled .nav-cta {
  border-color: var(--gold);
  color: var(--gold);
}

.nav-logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--gold2), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: all var(--duration-base) var(--ease-out);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dim);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  border-radius: 1px;
  transition: width var(--duration-base) var(--ease-out);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  padding: var(--space-sm) var(--space-lg);
  border: 1.5px solid var(--text-dim);
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  transition: all var(--duration-fast) var(--ease-out);
}

.nav-cta:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 101;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
}

.nav-hamburger.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Glass Card
   -------------------------------------------------------------------------- */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--space-xl);
  transition:
    background var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.glass-card.gold-border:hover {
  border-color: var(--border-focus);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(200, 146, 42, 0.06), transparent),
    radial-gradient(ellipse 60% 50% at 50% 100%, rgba(200, 146, 42, 0.04), transparent),
    var(--bg-deep);
  overflow: hidden;
  padding: 120px var(--space-lg) var(--space-3xl);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-title {
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.6;
}

.hero-search {
  display: flex;
  align-items: center;
  gap: 0;
  max-width: 600px;
  margin: 0 auto;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 50px;
  overflow: hidden;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.hero-search:focus-within {
  border-color: var(--border-focus);
}

.hero-search input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  padding: var(--space-md) var(--space-lg);
  font-size: 16px;
  color: var(--text);
  font-family: var(--font);
}

.hero-search input::placeholder {
  color: var(--text-muted);
}

.hero-search button {
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--gold), #a07620);
  border: none;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: var(--space-md) var(--space-xl);
  cursor: pointer;
  font-family: var(--font);
  transition: opacity var(--duration-fast) var(--ease-out);
}

.hero-search button:hover {
  opacity: 0.9;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font);
  border-radius: 50px;
  cursor: pointer;
  transition:
    all var(--duration-fast) var(--ease-out);
  border: 1.5px solid transparent;
  white-space: nowrap;
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold), #a07620);
  color: #fff;
  border-color: transparent;
}

.btn-gold:hover {
  background: linear-gradient(135deg, var(--gold2), var(--gold));
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--gold-glow);
}

.btn-outline {
  background: transparent;
  border-color: var(--gold);
  color: var(--text);
}

.btn-outline:hover {
  background: var(--gold-glow);
  border-color: var(--gold2);
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-dim);
}

.btn-ghost:hover {
  background: var(--glass);
  color: var(--text);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 17px;
}

/* --------------------------------------------------------------------------
   Grid Layouts
   -------------------------------------------------------------------------- */
.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* --------------------------------------------------------------------------
   Stats Cards
   -------------------------------------------------------------------------- */
.stat-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-xl);
  text-align: center;
  transition:
    background var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
}

.stat-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.stat-number {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  background: linear-gradient(135deg, var(--gold2), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Data Tables
   -------------------------------------------------------------------------- */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table thead {
  background: var(--glass);
}

.data-table th {
  text-align: left;
  padding: var(--space-md) var(--space-lg);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table tbody tr {
  transition: background var(--duration-fast) var(--ease-out);
}

.data-table tbody tr:hover {
  background: var(--bg-card-hover);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: var(--space-sm);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--glass);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px var(--space-md);
  font-size: 15px;
  font-family: var(--font);
  color: var(--text);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 4px var(--gold-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%23ffffff80' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

.form-input.error,
.form-textarea.error {
  border-color: var(--danger);
}

.form-error {
  font-size: 13px;
  color: var(--danger);
  margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--bg-mid);
  border-top: 1px solid var(--border);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
}

.footer-brand {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: var(--space-md);
}

.footer-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  max-width: 280px;
}

.footer-heading {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: var(--space-lg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.footer-bottom {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Keyframes
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-16px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 0 0 var(--gold-glow);
  }
  50% {
    box-shadow: 0 0 24px 4px var(--gold-glow);
  }
}

/* --------------------------------------------------------------------------
   Animate In — Staggered Children
   -------------------------------------------------------------------------- */
.animate-in > * {
  opacity: 0;
  animation: fadeInUp var(--duration-slow) var(--ease-out) forwards;
}

.animate-in > *:nth-child(1) { animation-delay: 0ms; }
.animate-in > *:nth-child(2) { animation-delay: 80ms; }
.animate-in > *:nth-child(3) { animation-delay: 160ms; }
.animate-in > *:nth-child(4) { animation-delay: 240ms; }
.animate-in > *:nth-child(5) { animation-delay: 320ms; }
.animate-in > *:nth-child(6) { animation-delay: 400ms; }

.fade-in {
  animation: fadeIn var(--duration-slow) var(--ease-out) forwards;
}

/* --------------------------------------------------------------------------
   Section Spacing
   -------------------------------------------------------------------------- */
.section {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.section-desc {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Badges & Tags
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.badge-gold {
  background: var(--gold-glow);
  color: var(--gold2);
}

.badge-glass {
  background: var(--glass);
  color: var(--text-dim);
}

/* --------------------------------------------------------------------------
   Dividers
   -------------------------------------------------------------------------- */
.divider {
  width: 100%;
  height: 1px;
  background: var(--border);
  border: none;
  margin: var(--space-2xl) 0;
}

.footer-lang-toggle{color:var(--gold);text-decoration:none;cursor:pointer;font-size:14px}
.footer-lang-toggle:hover{text-decoration:underline}

/* --------------------------------------------------------------------------
   Language Footer Grid — 18-language responsive selector
   -------------------------------------------------------------------------- */
.lang-footer-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin-top: var(--space-lg);
}

.lang-footer-grid .lang-opt {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-dim);
  cursor: pointer;
  font-family: var(--font);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.lang-footer-grid .lang-opt:hover,
.lang-footer-grid .lang-opt.active {
  background: var(--bg-card-hover);
  border-color: var(--gold);
  color: var(--text);
}

.lang-footer-grid .lang-opt .lg-flag {
  font-size: 16px;
  flex-shrink: 0;
}

.lang-footer-grid .lang-opt .lg-name {
  overflow: hidden;
  text-overflow: ellipsis;
}

.lang-footer-grid .lang-opt .lg-code {
  margin-left: auto;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Lang panel footer variant */
.lang-footer-grid.lang-panel {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 1024px) {
  .lang-footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .lang-footer-grid.lang-panel {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .lang-footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }
  .lang-footer-grid .lang-opt {
    padding: 10px 8px;
    font-size: 12px;
  }
}

/* ==========================================================================
   Responsive — Ultra-Wide / TV / Large Touchscreen (≥1920px)
   ========================================================================== */
@media (min-width: 1920px) {
  .container { max-width: 1600px; }
  html { font-size: 18px; }
  .hero { min-height: 80vh; padding: 160px 0 120px; }
  .hero-title { font-size: clamp(48px, 5vw, 96px); }
  .stat-num { font-size: clamp(48px, 4vw, 80px); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); gap: 32px; }
  .section { padding: 100px 0; }
  .btn-lg { padding: 18px 48px; font-size: 18px; }
  .glass-card { padding: 32px; }
}

/* ==========================================================================
   Responsive — Large Desktop (1440px-1919px)
   ========================================================================== */
@media (min-width: 1440px) and (max-width: 1919px) {
  .container { max-width: 1320px; }
  .section { padding: 80px 0; }
}

/* ==========================================================================
   Responsive — iPad Pro / Tablet Landscape (≤1024px)
   ========================================================================== */
@media (max-width: 1024px) {
  .container { padding-left: 32px; padding-right: 32px; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { gap: 20px; }
  .hero-title { font-size: clamp(28px, 5vw, 48px); }
  .hero { min-height: 60vh; padding: 120px 0 60px; }
  .section { padding: 48px 0; }
}

/* ==========================================================================
   Responsive — iPad / Tablet Portrait (≤768px)
   ========================================================================== */
@media (max-width: 768px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

  /* Mobile Nav */
  .nav-links { display: none !important; }
  .nav-menu { display: block !important; }
  .nav-right { display: flex; align-items: center; gap: 12px; }

  .mnav { display: none; position: fixed; top: 64px; left: 0; right: 0;
    background: rgba(13,21,48,.98); backdrop-filter: blur(24px);
    padding: 16px; z-index: 99; flex-direction: column; gap: 8px; }
  .mnav.show { display: flex !important; }
  .mnav a { display: block; padding: 14px 20px; border-radius: 10px;
    color: var(--text); text-decoration: none; font-size: 16px;
    background: var(--glass); }
  .mnav a:hover { background: var(--glass-strong); }

  /* Hero */
  .hero { min-height: auto; padding: 100px 16px 48px; }
  .hero-title { font-size: clamp(26px, 7vw, 36px); line-height: 1.2; }
  .hero-sub { font-size: 14px; }
  .hero-search { flex-direction: column; gap: 8px; }
  .hero-search-input { width: 100%; border-radius: 12px; font-size: 16px; }
  .hero-tags { gap: 6px; flex-wrap: nowrap; overflow-x: auto;
    -webkit-overflow-scrolling: touch; padding-bottom: 4px; }
  .hero-tag { white-space: nowrap; flex-shrink: 0; font-size: 13px; padding: 6px 14px; }

  /* Stats */
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-num { font-size: clamp(28px, 5vw, 40px); }
  .stat-label { font-size: 12px; }

  /* Section */
  .section { padding: 40px 0; }
  .section-title { font-size: clamp(20px, 5vw, 28px); }

  /* Cards */
  .glass-card { padding: 16px; }

  /* Tables */
  .table-card, .table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .data-table { min-width: 600px; }
  .data-table th, .data-table td { padding: 10px 12px; font-size: 13px; }

  /* CTA */
  .cta-inner { padding: 32px 16px; text-align: center; }
  .cta-btns { flex-direction: column; align-items: center; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center;}
  .footer-langs { justify-content: center; }
  .footer-lang-toggle { font-size: 14px; cursor: pointer; color: var(--gold); text-decoration: none; }
  .footer-lang-toggle:hover { text-decoration: underline; }

  /* Buttons */
  .btn-lg { padding: 14px 28px; font-size: 15px; }

  /* Language panel */
  .lang-panel-inner { width: 100%; max-width: 100%; border-radius: 16px 16px 0 0; }

  /* Search dropdown */
  .search-dropdown { max-height: 50vh; }

  /* Admin */
  .admin-sidebar { display: none; }
  .admin-main { margin-left: 0 !important; max-width: 100% !important; padding: 16px !important; }
  .dash-cards { grid-template-columns: repeat(2, 1fr); }

  /* RFQ cards */
  .rfq-card > div { flex-direction: column; }
}

/* ==========================================================================
   Responsive — Phone (≤480px)
   ========================================================================== */
@media (max-width: 480px) {
  html { font-size: 15px; }
  .container { padding-left: 14px; padding-right: 14px; }
  .hero { padding: 90px 12px 36px; }
  .hero-badge { font-size: 10px; padding: 4px 12px; }
  .hero-title { font-size: clamp(22px, 7vw, 28px); }
  .hero-sub { font-size: 13px; }
  .hero-search-input { font-size: 16px !important; padding: 14px 16px; }
  .stat-card { padding: 14px 10px; }
  .stat-num { font-size: 24px; }
  .stat-label { font-size: 11px; }
  .nav-logo { font-size: 20px; }
  .btn { font-size: 14px; padding: 10px 20px; }
  .btn-sm { padding: 8px 16px; font-size: 13px; }
  .cta-btns { gap: 10px; }
  .footer-logo { font-size: 22px; }
  .lang-btn { width: 40px; height: 40px; }
  .dash-cards { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Responsive — Small Phone (≤375px)
   ========================================================================== */
@media (max-width: 375px) {
  .container { padding-left: 10px; padding-right: 10px; }
  .hero { padding: 80px 10px 28px; }
  .hero-title { font-size: 20px; }
  .stats-row { gap: 8px; }
  .stat-card { padding: 10px 8px; }
  .stat-num { font-size: 20px; }
  .section-title { font-size: 18px; }
}

/* ==========================================================================
   Touch-Friendly Global Overrides
   ========================================================================== */
@media (hover: none) and (pointer: coarse) {
  /* Minimum tap target size */
  a, button, .btn, [role="button"], input[type="submit"] {
    min-height: 44px;
    min-width: 44px;
  }

  /* Disable hover effects that vanish on touch */
  .glass-card:hover { transform: none; }
  .glass-card:active { transform: scale(0.98); background: var(--bg-card-hover); }
  .btn-gold:hover { transform: none; }
  .btn-gold:active { transform: scale(0.97); }

  /* Smooth momentum scrolling */
  * { -webkit-overflow-scrolling: touch; }

  /* Larger form elements */
  input, select, textarea { font-size: 16px !important; }
}

/* ==========================================================================
   Large Touchscreen / Kiosk Mode (≥1920px + touch)
   ========================================================================== */
@media (min-width: 1920px) and (hover: none) and (pointer: coarse) {
  html { font-size: 22px; }
  .container { max-width: 1400px; }
  a, button, .btn { min-height: 56px; min-width: 56px; }
  input, select, textarea { padding: 16px 20px; font-size: 20px !important; }
  .glass-card { padding: 40px; border-radius: 24px; }
  .btn-lg { padding: 22px 56px; }
  .nav-links a { padding: 12px 20px; }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}