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

:root {
  --bg: #0f0f23;
  --bg-card: #1a1a2e;
  --bg-card-hover: #222240;
  --text: #e0e0e0;
  --text-muted: #888;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --reddit: #ff4500;
  --hn: #ff6600;
  --github: #6e40c9;
  --youtube: #ff0000;
  --border: #2a2a4a;
  --danger: #ef4444;
  --success: #22c55e;
  --radius: 10px;
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

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

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); color: #fff; text-decoration: none; }
.btn-outline {
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
}
.btn-outline:hover { background: var(--accent); color: #fff; text-decoration: none; }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Layout ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* ── Nav ── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.nav-logo { font-size: 1.5rem; font-weight: 800; color: var(--accent); }
.nav-logo a { color: inherit; text-decoration: none; }
.nav-links { display: flex; gap: 16px; align-items: center; }
.nav-links a { color: var(--text-muted); }
.nav-links a:hover { color: var(--text); }
.nav-user { color: var(--text-muted); font-size: 0.85rem; }

/* ── Hero ── */
.hero {
  text-align: center;
  padding: 80px 20px 60px;
}
.hero h1 { font-size: 3rem; font-weight: 800; margin-bottom: 16px; line-height: 1.2; }
.hero h1 span { color: var(--accent); }
.hero p { font-size: 1.2rem; color: var(--text-muted); max-width: 600px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── Feature Cards ── */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  padding: 60px 0;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  transition: transform 0.2s;
}
.feature-card:hover { transform: translateY(-2px); }
.feature-card .icon { font-size: 2rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.feature-card p { color: var(--text-muted); font-size: 0.9rem; }

/* ── Pricing ── */
.pricing {
  text-align: center;
  padding: 60px 0;
}
.pricing h2 { font-size: 2rem; margin-bottom: 32px; }
.price-card {
  display: inline-block;
  background: var(--bg-card);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 40px 48px;
  text-align: center;
  max-width: 360px;
  width: 100%;
}
.price-amount { font-size: 3rem; font-weight: 800; color: var(--accent); }
.price-period { color: var(--text-muted); margin-bottom: 8px; }
.price-trial { color: var(--success); font-size: 0.9rem; margin-bottom: 20px; }
.price-features { list-style: none; text-align: left; margin-bottom: 24px; }
.price-features li { padding: 6px 0; color: var(--text-muted); }
.price-features li::before { content: '✓ '; color: var(--success); }

/* ── Teaser / Trend Cards ── */
.teaser-section { padding: 40px 0; }
.teaser-section h2 { text-align: center; font-size: 1.5rem; margin-bottom: 24px; }

.trend-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px 20px;
  border: 1px solid var(--border);
  margin-bottom: 12px;
  transition: background 0.15s;
}
.trend-card:hover { background: var(--bg-card-hover); }
.trend-source {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  margin-right: 8px;
  vertical-align: middle;
}
.trend-source.reddit { background: var(--reddit); }
.trend-source.hacker-news { background: var(--hn); }
.trend-source.github { background: var(--github); }
.trend-source.youtube { background: var(--youtube); }
.trend-title { font-size: 1rem; font-weight: 600; margin: 8px 0 4px; }
.trend-meta { font-size: 0.8rem; color: var(--text-muted); }
.trend-meta span { margin-right: 12px; }

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}
.tab {
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-muted);
  border: none;
  background: none;
  transition: all 0.15s;
}
.tab:hover { color: var(--text); background: var(--bg-card); }
.tab.active { background: var(--accent); color: #fff; }
.tab:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Dashboard ── */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0 16px;
}
.dashboard-header h2 { font-size: 1.5rem; }
.filter-bar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.filter-bar select {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 0.9rem;
}
.trend-count { color: var(--text-muted); font-size: 0.85rem; margin-left: auto; }

/* ── Auth Forms ── */
.auth-container {
  max-width: 400px;
  margin: 60px auto;
  padding: 0 20px;
}
.auth-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--border);
}
.auth-card h2 { font-size: 1.5rem; margin-bottom: 24px; text-align: center; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 4px; font-size: 0.85rem; color: var(--text-muted); }
.form-group input {
  width: 100%;
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}
.form-group input:focus { outline: none; border-color: var(--accent); }
.form-error { color: var(--danger); font-size: 0.85rem; margin-bottom: 12px; }
.form-link { text-align: center; margin-top: 16px; font-size: 0.85rem; color: var(--text-muted); }

/* ── Footer ── */
.footer {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

/* ── Spinner ── */
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin: 40px auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Empty State ── */
.empty-state { text-align: center; padding: 40px; color: var(--text-muted); }
.empty-state .icon { font-size: 3rem; margin-bottom: 12px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .hero { padding: 40px 20px; }
  .features { grid-template-columns: 1fr; }
  .price-card { padding: 28px 24px; }
  .nav { flex-direction: column; gap: 8px; }
  .tabs { overflow-x: auto; flex-wrap: nowrap; }
}