/* Horizon Team — site stylesheet
 * Restored 2026-08-20 from memory + AdSense reapply pack spec
 * Alan老闆 / Horizon Team — Alan 同小花 🌸 協助
 */

:root {
  --bg: #0a0e1a;
  --bg-2: #0f1426;
  --fg: #e6e9f2;
  --muted: #8a92a8;
  --accent: #ffd700;
  --accent-2: #ff8f00;
  --border: #1e2436;
  --card: #121729;
  --link: #8ab4ff;
  --max: 1100px;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang HK",
               "Microsoft JhengHei", "Noto Sans CJK HK", Helvetica, Arial,
               sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ===== Top Nav ===== */
header { background: var(--bg-2); border-bottom: 1px solid var(--border); }
.top-nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.logo {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent);
}
.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.nav-links a { color: var(--fg); }
.nav-links a.active { color: var(--accent); }

/* ===== Main container ===== */
main.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

/* ===== Hero ===== */
.hero {
  text-align: center;
  padding: 64px 16px 48px;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.06), rgba(255, 143, 0, 0.04));
  border-radius: var(--radius);
  margin-bottom: 48px;
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.hero-subtitle {
  font-size: 1.1rem;
  color: var(--fg);
  margin: 0 0 12px;
}
.hero-tagline {
  color: var(--muted);
  margin: 0 0 20px;
  font-size: 0.95rem;
}
.hero-pillars {
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: var(--accent);
  margin: 0;
  font-weight: 600;
}

/* ===== Articles section ===== */
.articles-section h2 {
  font-size: 1.6rem;
  margin: 0 0 8px;
  color: var(--accent);
}
.section-subtitle {
  color: var(--muted);
  margin: 0 0 28px;
}
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.article-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.article-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.article-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}
.article-card h3 a {
  color: var(--fg);
}
.article-card h3 a:hover { color: var(--accent); }
.article-meta {
  font-size: 0.8rem;
  color: var(--accent);
  margin: 0 0 12px;
  letter-spacing: 0.5px;
}
.article-card p { margin: 0 0 12px; color: var(--fg); }
.article-card p:last-child { margin-bottom: 0; }

/* ===== Footer ===== */
footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ===== Misc ===== */
.btn {
  display: inline-block;
  padding: 10px 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0a0a1a;
  font-weight: 700;
  border-radius: 8px;
  text-decoration: none;
  border: none;
  cursor: pointer;
}
.btn:hover { filter: brightness(1.05); text-decoration: none; }

/* Responsive */
@media (max-width: 640px) {
  .top-nav { flex-direction: column; align-items: flex-start; }
  .nav-links { gap: 14px; }
  .hero { padding: 40px 16px 32px; }
  .article-grid { grid-template-columns: 1fr; }
}