/* PocketLLM — shared stylesheet */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-light: #eef2ff;

  --bg: #ffffff;
  --bg-alt: #f8f9fc;
  --surface: #ffffff;

  --text: #111827;
  --text-muted: #6b7280;
  --text-light: #9ca3af;

  --border: #e5e7eb;
  --radius: 12px;
  --radius-sm: 6px;

  --max-width: 720px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #818cf8;
    --accent-hover: #6366f1;
    --accent-light: #1e1b4b;

    --bg: #0f0f14;
    --bg-alt: #16161f;
    --surface: #1a1a26;

    --text: #f3f4f6;
    --text-muted: #9ca3af;
    --text-light: #6b7280;

    --border: #2a2a3d;
  }
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Layout ── */

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

/* ── Navigation ── */

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: var(--accent-light);
}

/* ── Main ── */

main {
  flex: 1;
}

/* ── Hero ── */

.hero {
  padding: 80px 0 72px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 20px;
}

.hero h1 span {
  color: var(--accent);
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  letter-spacing: -0.01em;
}

.btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  margin-left: 10px;
}

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

/* ── App Store badge ── */

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ── Features ── */

.features {
  padding: 56px 0 80px;
}

.features-label {
  text-align: center;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 40px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.feature-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-light);
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 14px;
  display: block;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Section divider ── */

hr.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ── Page header (for Privacy / Terms) ── */

.page-header {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.page-header h1 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 8px;
}

.page-header .effective-date {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ── Prose (Privacy / Terms body) ── */

.prose {
  padding-bottom: 80px;
}

.prose section {
  margin-bottom: 40px;
}

.prose h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.prose p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.75;
}

.prose ul, .prose ol {
  padding-left: 20px;
  margin-bottom: 12px;
}

.prose li {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  line-height: 1.7;
}

.prose a {
  color: var(--accent);
  text-decoration: none;
}

.prose a:hover {
  text-decoration: underline;
}

.prose strong {
  color: var(--text);
  font-weight: 600;
}

/* ── Footer ── */

footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  text-align: center;
}

footer p {
  font-size: 0.85rem;
  color: var(--text-light);
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
}

footer a:hover {
  color: var(--accent);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  list-style: none;
  margin-bottom: 10px;
}

/* ── Responsive ── */

@media (max-width: 600px) {
  .hero {
    padding: 56px 0 52px;
  }

  .btn-outline {
    margin-left: 0;
  }

  .nav-links a {
    padding: 6px 8px;
    font-size: 0.85rem;
  }
}