/* ============================================================
   AI Meeting Translator — static site stylesheet
   Modern, clean, responsive
   ============================================================ */

:root {
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-soft: #eef2ff;
  --accent: #06b6d4;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
  --maxw: 1120px;
  --header-h: 64px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }

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

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  white-space: nowrap;
}
.brand:hover { color: var(--text); }

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
}
.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: 8px;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--text); background: var(--bg-soft); }
.nav-links a.active { color: var(--primary); background: var(--primary-soft); }

.lang-toggle {
  flex-shrink: 0;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid transparent;
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.lang-toggle:hover { background: #e0e7ff; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: inherit;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.12s, box-shadow 0.15s, background 0.15s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-hover); color: #fff; transform: translateY(-1px); }
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover { background: var(--bg-soft); color: var(--text); transform: translateY(-1px); }
.btn-lg { padding: 14px 28px; font-size: 16px; }

/* ---------- Hero ---------- */
.hero {
  padding: 84px 0 72px;
  text-align: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid #e0e7ff;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(32px, 5.5vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 auto 20px;
  max-width: 820px;
}
.hero p.subtitle {
  font-size: clamp(16px, 2.2vw, 19px);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 32px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-visual {
  margin: 56px auto 0;
  max-width: 860px;
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  background: var(--bg-soft);
}

/* Mock translation panel shown in the hero */
.mock-panel { text-align: left; background: #0f172a; }
.mock-panel .mock-top {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 12px;
  color: #94a3b8;
}
.mock-panel .mock-dots { display: flex; gap: 6px; margin-right: 8px; }
.mock-panel .mock-dots i { width: 10px; height: 10px; border-radius: 50%; background: #475569; display: inline-block; }
.mock-panel .mock-body { padding: 24px; }
.mock-panel .mock-msg { margin-bottom: 16px; }
.mock-panel .mock-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
  margin-bottom: 5px;
}
.mock-panel .mock-orig { font-size: 15px; color: #e2e8f0; line-height: 1.5; }
.mock-panel .mock-trans { font-size: 15px; color: #22d3ee; line-height: 1.5; }

/* ---------- Sections ---------- */
.section { padding: 64px 0; }
.section.alt { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head {
  max-width: 680px;
  margin: 0 auto 44px;
  text-align: center;
}
.section-head h2 {
  font-size: clamp(26px, 4vw, 36px);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.section-head p { color: var(--text-secondary); font-size: 17px; margin: 0; }

/* ---------- Feature grid ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--text-secondary); font-size: 15px; }

.icon-chip {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

/* ---------- Chips (languages / platforms) ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
}
.chip .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

/* ---------- Steps ---------- */
.steps { display: grid; gap: 16px; max-width: 720px; margin: 0 auto; }
.step {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  box-shadow: var(--shadow-sm);
}
.step-num {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step p { margin: 4px 0 0; font-size: 15px; color: var(--text); }

/* ---------- Pricing ---------- */
.pricing-grid { display: grid; gap: 24px; grid-template-columns: repeat(2, 1fr); max-width: 900px; margin: 0 auto; }
.plan {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.plan.featured { border-color: var(--primary); box-shadow: var(--shadow-md); }
.plan-badge {
  position: absolute;
  top: -13px;
  right: 22px;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
}
.plan-name { font-size: 20px; font-weight: 700; margin: 0 0 4px; }
.plan-price { font-size: 42px; font-weight: 800; letter-spacing: -0.02em; line-height: 1; margin: 8px 0 2px; }
.plan-per { color: var(--text-muted); font-size: 14px; margin: 0 0 20px; }
.plan-features { list-style: none; margin: 0 0 24px; padding: 0; }
.plan-features li {
  position: relative;
  padding: 8px 0 8px 28px;
  color: var(--text-secondary);
  font-size: 15px;
}
.plan-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary-soft);
}
.plan-features li::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 16px;
  width: 6px;
  height: 12px;
  border: solid var(--primary);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.plan .btn { margin-top: auto; }

.region-grid { display: grid; gap: 20px; grid-template-columns: repeat(2, 1fr); max-width: 900px; margin: 40px auto 0; }
.region {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}
.region h3 { margin: 0 0 4px; font-size: 18px; }
.region .pay { color: var(--text-muted); font-size: 14px; margin: 0 0 18px; }
.region-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 12px 0;
  border-top: 1px solid var(--border);
}
.region-row:first-of-type { border-top: 0; }
.region-row .period { font-weight: 600; }
.region-row .price { font-weight: 700; font-size: 18px; }
.region-row .save {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: #059669;
  background: #ecfdf5;
  padding: 2px 9px;
  border-radius: 999px;
}

.pricing-note {
  max-width: 720px;
  margin: 32px auto 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 15px;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff;
  border-radius: 20px;
  padding: 56px 40px;
  text-align: center;
}
.cta-band h2 { font-size: clamp(24px, 4vw, 34px); margin: 0 0 12px; }
.cta-band p { color: rgba(255,255,255,0.85); margin: 0 0 28px; font-size: 16px; }
.cta-band .btn-primary { background: #fff; color: var(--primary); }
.cta-band .btn-primary:hover { background: #eef2ff; color: var(--primary); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 44px 0;
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-col h4 { margin: 0 0 12px; font-size: 14px; color: var(--text); }
.footer-col a, .footer-col span { display: block; color: var(--text-secondary); font-size: 14px; margin: 6px 0; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
}

/* ---------- Legal pages ---------- */
.legal { max-width: 780px; margin: 0 auto; padding: 56px 24px 80px; }
.legal h1 { font-size: 30px; letter-spacing: -0.02em; margin: 0 0 6px; }
.legal .updated { color: var(--text-muted); font-size: 14px; margin: 0 0 32px; }
.legal h2 { font-size: 20px; margin: 34px 0 10px; color: var(--text); }
.legal h3 { font-size: 16px; margin: 22px 0 8px; }
.legal p, .legal li { font-size: 15px; color: var(--text-secondary); }
.legal ul { padding-left: 22px; }
.legal a { font-weight: 500; }
.legal code {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 5px;
  font-size: 13px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .hero { padding: 56px 0 48px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .pricing-grid, .region-grid { grid-template-columns: 1fr; }
  .section { padding: 48px 0; }
}