/* ═══════════════════════════════════════════════════
   TENGGO — Design System  |  main.css
   ═══════════════════════════════════════════════════ */

/* ── 1. CSS Variables ── */
:root {
  /* BRAND */
  --primary:        #0D7A9A;
  --primary-dark:   #0A6278;
  --primary-light:  #E0F4F8;
  --primary-glow:   rgba(13,122,154,0.18);
  --secondary:      #E8A820;
  --secondary-dark: #C8900E;
  --secondary-light:#FEF3D0;

  /* BACKGROUNDS */
  --bg:             #F5FAFB;
  --bg-2:           #EBF5F8;
  --surface:        #FFFFFF;
  --surface-2:      #F0F8FA;
  --surface-3:      #E4F2F6;

  /* TEXT */
  --text:           #0B2333;
  --text-2:         #1C4558;
  --text-3:         #4A7A8E;
  --text-muted:     #7FA8B8;

  /* BORDERS */
  --border:         #C2DCE5;
  --border-strong:  #0D7A9A;

  /* STATUS */
  --success:        #0FA870;
  --success-bg:     #DFF5EC;
  --warning:        #D97B00;
  --warning-bg:     #FEF3D0;
  --danger:         #D84040;
  --danger-bg:      #FDEAEA;
  --info:           #0D7A9A;
  --info-bg:        #E0F4F8;

  /* GRADIENTS */
  --grad-primary:   linear-gradient(135deg, #0D7A9A 0%, #065470 100%);
  --grad-hero:      linear-gradient(135deg, #E8F8FC 0%, #F5FAFB 50%, #FEF8E8 100%);
  --grad-gold:      linear-gradient(135deg, #E8A820 0%, #F5C842 100%);
  --grad-glass:     linear-gradient(135deg, rgba(255,255,255,0.7), rgba(255,255,255,0.3));

  /* SPACING & SHAPE */
  --radius-sm:      8px;
  --radius:         12px;
  --radius-lg:      20px;
  --radius-xl:      32px;
  --radius-full:    9999px;

  /* SHADOWS */
  --shadow-sm:      0 1px 3px rgba(13,35,51,0.06), 0 2px 8px rgba(13,35,51,0.04);
  --shadow:         0 2px 8px rgba(13,35,51,0.08), 0 8px 24px rgba(13,35,51,0.06);
  --shadow-lg:      0 8px 24px rgba(13,35,51,0.12), 0 24px 64px rgba(13,35,51,0.08);
  --shadow-primary: 0 8px 32px rgba(13,122,154,0.30);
  --shadow-gold:    0 8px 32px rgba(232,168,32,0.35);
  --shadow-glow:    0 0 40px rgba(13,122,154,0.20);

  /* TRANSITIONS */
  --ease:           cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out:       cubic-bezier(0, 0, 0.2, 1);
  --ease-spring:    cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition:     0.3s var(--ease);
  --transition-slow:0.6s var(--ease-out);

  /* FONTS */
  --font-display:   'Lora', Georgia, serif;
  --font-body:      'Plus Jakarta Sans', system-ui, sans-serif;

  /* Z-INDEX */
  --z-dropdown:     100;
  --z-sticky:       200;
  --z-overlay:      300;
  --z-modal:        400;
  --z-toast:        500;
}

/* ── 2. 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-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html, body { overflow-x: hidden; }
*, *::before, *::after { box-sizing: border-box; }
img, video, svg { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
ul { list-style: none; }
input, textarea, select { font-family: inherit; }

/* ── 3. Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.25;
  color: var(--text);
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.6rem); }
h4 { font-size: 1.1rem; }

p { color: var(--text-3); line-height: 1.75; }

.display-font { font-family: var(--font-display); }
.body-font    { font-family: var(--font-body); }

/* ── 4. Layout ── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow { max-width: 800px; margin: 0 auto; padding: 0 24px; }
.container-wide   { max-width: 1400px; margin: 0 auto; padding: 0 24px; }

.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }
.section-lg { padding: 120px 0; }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.gap-32 { gap: 32px; }

/* ── 5. Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(13,122,154,0.28);
  transition: transform 0.28s cubic-bezier(0.34,1.56,0.64,1),
              box-shadow 0.28s ease,
              background 0.2s ease;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 44px rgba(13,122,154,0.42);
  color: #fff;
}

.btn-gold {
  background: var(--grad-gold);
  color: var(--text);
  box-shadow: 0 4px 16px rgba(232,168,32,0.30);
  transition: transform 0.28s cubic-bezier(0.34,1.56,0.64,1),
              box-shadow 0.28s ease;
}
.btn-gold:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 44px rgba(232,168,32,0.46);
  color: var(--text);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  transition: background 0.22s ease, color 0.22s ease,
              transform 0.28s cubic-bezier(0.34,1.56,0.64,1),
              box-shadow 0.28s ease;
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 32px rgba(13,122,154,0.32);
}

.btn-ghost {
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  transition: background 0.22s ease, color 0.22s ease,
              transform 0.28s cubic-bezier(0.34,1.56,0.64,1),
              box-shadow 0.28s ease;
}
.btn-ghost:hover {
  background: var(--surface-2);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  color: var(--text);
}

.btn-sm { padding: 8px 16px; font-size: 0.82rem; }
.btn-lg { padding: 16px 36px; font-size: 1rem; }

/* ── 6. Cards ── */
.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.card-body { padding: 24px; }
.card-sm .card-body { padding: 16px; }

.card-glass {
  background: var(--grad-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: var(--radius-lg);
}

/* ── 7. Badges & Tags ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-primary { background: var(--primary-light); color: var(--primary-dark); }
.badge-gold    { background: var(--secondary-light); color: var(--secondary-dark); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger  { background: var(--danger-bg); color: var(--danger); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }

.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--surface-2);
  color: var(--text-3);
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: background 0.2s ease, color 0.2s ease,
              border-color 0.2s ease,
              transform 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.tag:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* ── 8. Section Headers ── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--primary-glow);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-header { text-align: center; max-width: 600px; margin: 0 auto 56px; }
.section-header .section-label { margin-bottom: 16px; }
.section-header h2 { margin-bottom: 16px; }
.section-header p { font-size: 1.05rem; }

/* ── 9. Forms ── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 0.875rem; font-weight: 600; color: var(--text-2); }
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--surface);
  transition: all var(--transition);
  outline: none;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-glow); }
.form-control::placeholder { color: var(--text-muted); }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24'%3E%3Cpath fill='%237FA8B8' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.form-hint { font-size: 0.78rem; color: var(--text-muted); }
.form-error { font-size: 0.78rem; color: var(--danger); }

/* ── 10. Dividers & Decorative ── */
.divider { height: 1px; background: var(--border); margin: 24px 0; }

.wave-divider {
  width: 100%;
  overflow: hidden;
  line-height: 0;
}
.wave-divider svg { display: block; width: 100%; }

.clip-diagonal {
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
  padding-bottom: 80px;
}
.clip-diagonal-reverse {
  clip-path: polygon(0 5%, 100% 0, 100% 100%, 0 100%);
  padding-top: 80px;
}

/* ── 11. Alerts / Flash ── */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.alert-success { background: var(--success-bg); color: var(--success); border-left: 4px solid var(--success); }
.alert-danger   { background: var(--danger-bg);  color: var(--danger);  border-left: 4px solid var(--danger);  }
.alert-warning  { background: var(--warning-bg); color: var(--warning); border-left: 4px solid var(--warning); }
.alert-info     { background: var(--info-bg);    color: var(--info);    border-left: 4px solid var(--info);    }

/* ── 12. Pagination ── */
.pagination { display: flex; align-items: center; gap: 8px; justify-content: center; }
.page-btn {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 600;
  color: var(--text-3);
  background: var(--surface);
  border: 1.5px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
}
.page-btn:hover, .page-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  color: #fff;
}

/* ── 13. Stars Rating ── */
.stars { display: inline-flex; gap: 2px; }
.stars i { color: var(--secondary); font-size: 1rem; }
.stars.sm i { font-size: 0.8rem; }

/* ── 14. Avatar ── */
.avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--surface-3);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; color: var(--primary);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.avatar-sm { width: 36px; height: 36px; font-size: 0.9rem; }
.avatar-lg { width: 64px; height: 64px; font-size: 1.4rem; }
.avatar-xl { width: 96px; height: 96px; font-size: 2rem; }

/* ── 15. Skeleton Loader ── */
.skeleton {
  background: linear-gradient(90deg, var(--surface-2) 25%, var(--surface-3) 50%, var(--surface-2) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius);
}
@keyframes skeleton-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── 16. Navbar (base) ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-sticky);
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  transition: all var(--transition);
}
.navbar.transparent { background: transparent; }
.navbar.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(13,35,51,0.08);
}
.navbar-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 32px;
}
.navbar-brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  flex-shrink: 0;
}
.navbar-brand .brand-dot { color: var(--secondary); }
.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-2);
  transition: all var(--transition);
  position: relative;
  display: inline-flex; align-items: center; gap: 4px;
}
.nav-link:hover { color: var(--primary); background: var(--primary-glow); }
.nav-link.active { color: var(--primary); }

/* Dropdown */
.nav-item { position: relative; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(13,35,51,0.12), 0 2px 8px rgba(13,35,51,0.06);
  border: 1px solid var(--border);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(0.97);
  transform-origin: top left;
  transition: opacity 0.2s ease, visibility 0.2s ease,
              transform 0.25s cubic-bezier(0.16,1,0.3,1);
  z-index: var(--z-dropdown);
}
.nav-item:hover .dropdown-menu,
.nav-item:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.dropdown-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius);
  color: var(--text-2);
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--transition);
}
.dropdown-item:hover { background: var(--primary-glow); color: var(--primary); }
.dropdown-item i { font-size: 1.1rem; }

.navbar-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none;
  cursor: pointer; padding: 8px; margin-left: auto;
}
.hamburger span {
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
  display: block;
}

/* Mobile nav — opacity/visibility transition (GPU-composited, no display:none flash) */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: rgba(9,28,43,0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.32s ease, visibility 0.32s ease;
}
.mobile-nav.open { opacity: 1; visibility: visible; }
.mobile-nav .nav-link {
  color: rgba(255,255,255,0.88);
  font-size: 1.2rem;
  font-weight: 600;
  padding: 10px 28px;
  border-radius: var(--radius-lg);
  transition: color var(--transition), background var(--transition),
              transform 0.38s cubic-bezier(0.16,1,0.3,1), opacity 0.32s ease;
}
.mobile-nav .nav-link:hover {
  color: var(--secondary);
  background: rgba(255,255,255,0.06);
}
.mobile-nav-close {
  position: absolute; top: 24px; right: 24px;
  color: rgba(255,255,255,0.7);
  font-size: 1.8rem;
  background: rgba(255,255,255,0.08);
  border: none;
  cursor: pointer;
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), color var(--transition);
}
.mobile-nav-close:hover { background: rgba(255,255,255,0.15); color: #fff; }

/* ── 17. Footer (base) ── */
.footer {
  background: var(--text);
  color: rgba(255,255,255,0.7);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 56px;
}
.footer-brand .brand-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.footer-brand p { font-size: 0.875rem; line-height: 1.7; color: rgba(255,255,255,0.6); }
.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 16px;
}
.footer-link {
  display: flex;
  width: fit-content;
  align-items: center;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.58);
  padding: 5px 0;
  transition: color 0.22s ease, transform 0.22s cubic-bezier(0.34,1.56,0.64,1);
}
.footer-link:hover {
  color: rgba(255,255,255,0.92);
  transform: translateX(4px);
}
.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.footer-social a {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 1rem;
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-newsletter { margin-top: 20px; display: flex; gap: 8px; }
.footer-newsletter input {
  flex: 1; padding: 10px 14px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  color: #fff; font-size: 0.85rem; font-family: inherit;
  outline: none;
}
.footer-newsletter input::placeholder { color: rgba(255,255,255,0.4); }
.footer-newsletter input:focus { border-color: var(--primary); }
.footer-newsletter button {
  padding: 10px 18px;
  background: var(--grad-primary);
  color: #fff; border-radius: var(--radius-full);
  font-size: 0.85rem; font-weight: 600;
  transition: all var(--transition);
}
.footer-newsletter button:hover { transform: translateY(-1px); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.8rem; color: rgba(255,255,255,0.4);
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { color: rgba(255,255,255,0.4); font-size: 0.8rem; }
.footer-bottom-links a:hover { color: rgba(255,255,255,0.8); }

/* ── 18. Cookie Banner ── */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--text);
  color: rgba(255,255,255,0.85);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  z-index: var(--z-toast);
  font-size: 0.875rem;
  box-shadow: 0 -4px 24px rgba(0,0,0,0.15);
  transform: translateY(100%);
  transition: transform 0.4s var(--ease-out);
}
.cookie-banner.visible { transform: translateY(0); }
.cookie-banner a { color: var(--secondary); text-decoration: underline; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.cookie-btn {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.82rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition);
}
.cookie-btn-primary { background: var(--primary); color: #fff; }
.cookie-btn-primary:hover { background: var(--primary-dark); }
.cookie-btn-secondary { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.8); border: 1px solid rgba(255,255,255,0.2); }
.cookie-btn-secondary:hover { background: rgba(255,255,255,0.2); }

/* ── 19. Hero common ── */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.hero-content { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  background: var(--primary-glow);
  border: 1px solid rgba(13,122,154,0.25);
  border-radius: var(--radius-full);
  font-size: 0.8rem; font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--primary); animation: pulse-dot 2s infinite; }

/* ── 20. Text utilities ── */
.text-primary  { color: var(--primary) !important; }
.text-secondary{ color: var(--secondary) !important; }
.text-muted    { color: var(--text-muted) !important; }
.text-center   { text-align: center; }
.text-right    { text-align: right; }
.fw-600        { font-weight: 600; }
.fw-700        { font-weight: 700; }
.fw-800        { font-weight: 800; }

/* ── 21. Spacing utilities ── */
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }

/* ── 22. Breadcrumb ── */
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-muted); flex-wrap: wrap; }
.breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { color: var(--border); }
.breadcrumb span { color: var(--text-3); font-weight: 600; }

/* ── 23. Progress bar (reading) ── */
#reading-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: var(--grad-primary);
  z-index: calc(var(--z-sticky) + 10);
  transition: width 0.1s linear;
  width: 0%;
}

/* ── 24. Table of Contents ── */
.toc {
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  border: 1px solid var(--border);
}
.toc-title { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-2); margin-bottom: 12px; }
.toc a {
  display: block; padding: 6px 0;
  font-size: 0.875rem; color: var(--text-3);
  border-left: 2px solid transparent;
  padding-left: 12px;
  transition: all var(--transition);
}
.toc a:hover, .toc a.active {
  color: var(--primary);
  border-left-color: var(--primary);
  padding-left: 16px;
}
.toc a.toc-h3 { padding-left: 24px; font-size: 0.82rem; }
.toc a.toc-h3:hover, .toc a.toc-h3.active { padding-left: 28px; }

/* ── 25. Legal page layout ── */
.legal-layout { display: grid; grid-template-columns: 260px 1fr; gap: 48px; align-items: start; }
.legal-sidebar { position: sticky; top: 96px; }
.legal-toc { padding: 20px; background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.legal-toc h4 { font-family: var(--font-body); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-2); margin-bottom: 12px; }
.legal-toc a {
  display: block; padding: 7px 12px;
  font-size: 0.83rem; color: var(--text-3);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.legal-toc a:hover { background: var(--primary-glow); color: var(--primary); }
.legal-content h2 { font-size: 1.3rem; margin: 40px 0 16px; padding-top: 24px; border-top: 1px solid var(--border); }
.legal-content h2:first-child { margin-top: 0; border-top: none; padding-top: 0; }
.legal-content h3 { font-family: var(--font-body); font-size: 1rem; font-weight: 700; color: var(--text-2); margin: 24px 0 8px; }
.legal-content p { margin-bottom: 12px; }
.legal-content ul { padding-left: 20px; list-style: disc; margin-bottom: 12px; }
.legal-content ul li { color: var(--text-3); margin-bottom: 6px; font-size: 0.95rem; }

/* ── 26. Responsive ── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .legal-layout { grid-template-columns: 1fr; }
  .legal-sidebar { position: static; }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .section { padding: 48px 0; }
  .section-lg { padding: 64px 0; }
  .section-header { margin-bottom: 36px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  /* Navbar: hide desktop nav + both CTA buttons, show hamburger */
  .navbar-nav, .navbar-actions { display: none; }
  .hamburger { display: flex; }
  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 8px; }
  .footer-bottom-links { justify-content: center; }
  .footer-newsletter { flex-direction: column; gap: 8px; }
  .footer-newsletter input,
  .footer-newsletter button { width: 100%; border-radius: var(--radius-lg); }
  /* Typography */
  h1 { font-size: 1.9rem; }
  h2 { font-size: 1.4rem; }
  h3 { font-size: 1.1rem; }
  .cookie-banner { flex-direction: column; align-items: flex-start; }
  /* Mobile nav CTA buttons */
  .mobile-nav > div { flex-direction: column; }
  .mobile-nav > div .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 14px; }
  .section { padding: 36px 0; }
  .section-header { margin-bottom: 28px; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .btn-lg { padding: 13px 20px; font-size: 0.9rem; }
  h1 { font-size: 1.65rem; }
  h2 { font-size: 1.25rem; }
  .section-header p { font-size: 0.875rem; }
}

/* ── 27. Scroll progress bar ── */
#scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: var(--grad-primary);
  z-index: calc(var(--z-sticky) + 20);
  width: 0%;
  transition: width 0.08s linear;
  pointer-events: none;
  border-radius: 0 2px 2px 0;
}

/* ── 28. Button ripple ── */
.btn {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

/* ── 29. Card enhanced hover ── */
.card {
  transition: transform 0.28s cubic-bezier(0.34,1.56,0.64,1),
              box-shadow 0.28s ease,
              border-color 0.2s ease;
}

/* ── 30. Navbar active link indicator ── */
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--primary);
}

/* ── 31. Utility visibility ── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}