/* ================================================
   逍遥DAO — Internal Portal / 战略导航
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* === TOKENS (Dark — default) === */
:root, [data-theme="dark"] {
  --bg-1: #06080F;
  --bg-2: #0A0E17;
  --bg-3: #0F1829;
  --bg-card: rgba(15, 24, 41, 0.75);
  --gold: #C9A84C;
  --gold-l: #E8C76A;
  --gold-d: #A88730;
  --gold-bg: rgba(201, 168, 76, 0.10);
  --gold-border: rgba(201, 168, 76, 0.25);
  --gold-glow: rgba(201, 168, 76, 0.35);
  --gold-btn-text: #0A0E17;
  --t1: #FFFFFF;
  --t2: #B8C4D4;
  --t3: #6B7A8D;
  --border: rgba(255, 255, 255, 0.08);
  --green: #10B981;
  --blue: #3B82F6;
  --purple: #8B5CF6;
  --amber: #F59E0B;
  --font-sans: 'Noto Sans SC', 'PingFang SC', system-ui, -apple-system, sans-serif;
  --font-serif: 'Noto Serif SC', Georgia, serif;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* === TOKENS (Light) === */
[data-theme="light"] {
  --bg-1: #F5F3EF;
  --bg-2: #FFFFFF;
  --bg-3: #EDE9E1;
  --bg-card: rgba(255, 255, 255, 0.85);
  --gold: #9E7C20;
  --gold-l: #C9A84C;
  --gold-d: #7A5F14;
  --gold-bg: rgba(158, 124, 32, 0.08);
  --gold-border: rgba(158, 124, 32, 0.22);
  --gold-glow: rgba(158, 124, 32, 0.20);
  --gold-btn-text: #FFFFFF;
  --t1: #1A1A1A;
  --t2: #4A4A4A;
  --t3: #8A8A8A;
  --border: rgba(0, 0, 0, 0.08);
  --green: #059669;
  --blue: #2563EB;
  --purple: #7C3AED;
  --amber: #D97706;
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-1);
  color: var(--t1);
  min-height: 100vh;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* === BACKGROUND === */
.portal-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 800px 500px at 20% 15%, rgba(201,168,76,0.05) 0%, transparent 70%),
    radial-gradient(ellipse 600px 400px at 80% 85%, rgba(201,168,76,0.03) 0%, transparent 70%);
}
[data-theme="light"] .portal-bg {
  background:
    radial-gradient(ellipse 800px 500px at 20% 15%, rgba(158,124,32,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 600px 400px at 80% 85%, rgba(158,124,32,0.02) 0%, transparent 70%);
}

/* === LAYOUT === */
.portal {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 60px 32px 80px;
}

/* === HEADER === */
.portal-header {
  text-align: center;
  margin-bottom: 56px;
}
.portal-logo {
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  filter: drop-shadow(0 0 16px rgba(201,168,76,0.25));
}
[data-theme="light"] .portal-logo {
  filter: drop-shadow(0 0 16px rgba(158,124,32,0.15));
}
.portal-brand {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--gold);
  letter-spacing: 4px;
  margin-bottom: 4px;
}
.portal-brand-en {
  font-size: 0.72rem;
  color: var(--t3);
  letter-spacing: 2px;
}
.portal-divider {
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 20px auto;
}
.portal-subtitle {
  font-size: 0.88rem;
  color: var(--t3);
  letter-spacing: 1px;
}
.portal-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--amber);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  padding: 3px 10px;
  border-radius: 12px;
  margin-top: 12px;
  letter-spacing: 1px;
}
[data-theme="light"] .portal-badge {
  color: var(--amber);
  background: rgba(217, 119, 6, 0.08);
  border-color: rgba(217, 119, 6, 0.2);
}

/* === NAV CARDS === */
.portal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.portal-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.35s var(--ease);
  overflow: hidden;
  cursor: pointer;
  text-decoration: none;
}
.portal-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  opacity: 0;
  transition: opacity 0.35s;
}
.portal-card:nth-child(1)::before { background: linear-gradient(90deg, var(--gold-d), var(--gold-l)); }
.portal-card:nth-child(2)::before { background: linear-gradient(90deg, var(--blue), var(--purple)); }
.portal-card:nth-child(3)::before { background: linear-gradient(90deg, var(--green), var(--blue)); }

.portal-card:hover {
  border-color: var(--gold-border);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}
.portal-card:hover::before { opacity: 1; }

[data-theme="light"] .portal-card:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.card-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--t1);
  margin-bottom: 8px;
}
.card-desc {
  font-size: 0.82rem;
  color: var(--t3);
  line-height: 1.7;
  flex: 1;
}
.card-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
  margin-top: 16px;
  letter-spacing: 0.5px;
  width: fit-content;
}
.card-tag.live {
  color: var(--green);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
}
.card-tag.v4 {
  color: var(--purple);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
}
.card-tag.upcoming {
  color: var(--blue);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.card-arrow {
  position: absolute;
  bottom: 28px;
  right: 28px;
  font-size: 1.2rem;
  color: var(--t3);
  transition: all 0.3s;
}
.portal-card:hover .card-arrow { color: var(--gold); transform: translateX(4px); }

/* === QUICK LINKS === */
.quick-section {
  margin-bottom: 48px;
}
.quick-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--t3);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.quick-link {
  font-size: 0.82rem;
  color: var(--t2);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 8px;
  transition: all 0.25s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.quick-link:hover {
  color: var(--gold);
  border-color: var(--gold-border);
}

/* === FOOTER === */
.portal-footer {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.portal-footer p {
  font-size: 0.75rem;
  color: var(--t3);
  line-height: 1.8;
}

/* === THEME TOGGLE === */
.theme-toggle-portal {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
  display: flex;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.theme-toggle-portal button {
  background: none;
  border: none;
  color: var(--t3);
  cursor: pointer;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: all 0.25s;
}
.theme-toggle-portal button:hover { color: var(--gold); }
.theme-toggle-portal button.active {
  color: var(--gold);
  background: var(--gold-bg);
}
.theme-toggle-portal button + button {
  border-left: 1px solid var(--border);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .portal { padding: 40px 20px 60px; }
  .portal-grid { grid-template-columns: 1fr; gap: 16px; }
  .portal-header { margin-bottom: 36px; }
  .portal-card { padding: 24px 20px; }
}

@media (max-width: 480px) {
  .portal { padding: 28px 14px 48px; }
  .portal-brand { font-size: 1.1rem; }
  .card-title { font-size: 1.05rem; }
  .card-desc { font-size: 0.78rem; }
  .portal-card { padding: 20px 16px; }
  .card-icon { font-size: 1.6rem; margin-bottom: 12px; }
  .portal-subtitle { font-size: 0.8rem; }
  .quick-link { font-size: 0.75rem; padding: 6px 14px; }
  .portal-footer p { font-size: 0.68rem; }
  .theme-toggle-portal { top: 12px; right: 12px; }
  .theme-toggle-portal button { width: 34px; height: 34px; font-size: 0.85rem; }
}