/* ═══════════════════════════════════════
   TokenHub — 统一主题样式
   ═══════════════════════════════════════ */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #131320;
  --bg-card: #1a1a2e;
  --bg-card-hover: #22223a;
  --border: #2a2a4a;
  --text-primary: #e8e8f0;
  --text-secondary: #9898b8;
  --text-muted: #6868a0;
  --accent: #6c5ce7;
  --accent-light: #a29bfe;
  --accent-glow: rgba(108, 92, 231, 0.25);
  --green: #00d2a0;
  --green-glow: rgba(0, 210, 160, 0.2);
  --red: #ff6b6b;
  --orange: #ffa502;
  --blue: #4dabf7;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --font-mono: 'JetBrains Mono', 'Cascadia Code', 'Fira Code', monospace;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── 渐变背景 ── */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(108,92,231,0.08), transparent),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(0,210,160,0.05), transparent),
    var(--bg-primary);
}

/* ── 导航栏 ── */
.navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 32px;
  background: rgba(19,19,32,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
}
.nav-logo { font-size: 1.5rem; font-weight: 800; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.95rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--text-primary); }

/* ── 按钮 ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 22px; border-radius: var(--radius-sm);
  font-size: 0.95rem; font-weight: 600;
  text-decoration: none; cursor: pointer;
  border: none; transition: all 0.25s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #7c6ff7; box-shadow: 0 0 20px var(--accent-glow); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--accent-light); border: 1.5px solid var(--accent); }
.btn-outline:hover { background: var(--accent-glow); }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn-green { background: var(--green); color: #000; }
.btn-green:hover { box-shadow: 0 0 18px var(--green-glow); }

/* ── 卡片 ── */
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  transition: all 0.3s;
}
.card:hover { border-color: var(--accent); box-shadow: 0 4px 20px rgba(108,92,231,0.1); }

/* ── 表单 ── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 6px; }
.form-input {
  width: 100%; padding: 10px 14px;
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-primary);
  font-size: 0.95rem; transition: border-color 0.2s;
}
.form-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

/* ── 状态标签 ── */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 0.8rem; font-weight: 600;
}
.badge-free { background: rgba(152,152,184,0.15); color: var(--text-secondary); }
.badge-vip { background: rgba(108,92,231,0.2); color: var(--accent-light); }
.badge-svip { background: rgba(255,165,2,0.2); color: var(--orange); }
.badge-admin { background: rgba(255,107,107,0.2); color: var(--red); }

/* ── 容器 ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }

/* ── Hero ── */
.hero { text-align: center; padding: 100px 0 80px; }
.hero h1 { font-size: 3.2rem; font-weight: 900; line-height: 1.2; margin-bottom: 20px; }
.hero h1 span { background: linear-gradient(135deg, var(--accent-light), var(--green)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 1.2rem; color: var(--text-secondary); max-width: 640px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ── 统计数据 ── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 20px; }
.stat-card { text-align: center; padding: 28px 20px; }
.stat-number { font-size: 2.2rem; font-weight: 800; }
.stat-number.green { color: var(--green); }
.stat-number.purple { color: var(--accent-light); }
.stat-label { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; }

/* ── 定价卡片 ── */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.pricing-card { text-align: center; padding: 36px 28px; position: relative; }
.pricing-card.featured { border-color: var(--accent); box-shadow: 0 0 32px var(--accent-glow); }
.pricing-card .tier-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.pricing-card .price { font-size: 2.8rem; font-weight: 900; margin: 12px 0; }
.pricing-card .price sup { font-size: 1.2rem; }
.pricing-card .features { text-align: left; margin: 24px 0; }
.pricing-card .features li { padding: 6px 0; color: var(--text-secondary); font-size: 0.9rem; }
.pricing-card .features li::before { content: '✓ '; color: var(--green); }
.pricing-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; padding: 4px 16px;
  border-radius: 20px; font-size: 0.8rem; font-weight: 700;
}

/* ── 模型表格 ── */
.model-table { width: 100%; border-collapse: collapse; }
.model-table th, .model-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); }
.model-table th { color: var(--text-muted); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; }
.model-table tr:hover { background: rgba(108,92,231,0.05); }

/* ── 图表容器 ── */
.chart-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; height: 360px; }

/* ── 标签切换 ── */
.tabs { display: flex; gap: 4px; margin-bottom: 24px; background: var(--bg-secondary); border-radius: var(--radius); padding: 4px; }
.tab-btn { padding: 8px 20px; border: none; border-radius: 8px; background: transparent; color: var(--text-secondary); cursor: pointer; font-size: 0.9rem; transition: all 0.2s; }
.tab-btn.active { background: var(--accent); color: #fff; }

/* ── Toast ── */
.toast {
  position: fixed; top: 20px; right: 20px; z-index: 1000;
  padding: 14px 22px; border-radius: var(--radius-sm);
  font-size: 0.9rem; font-weight: 600;
  animation: slideIn 0.3s ease;
  max-width: 400px;
}
.toast-success { background: var(--green); color: #000; }
.toast-error { background: var(--red); color: #fff; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ── 模态框 ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; z-index: 200; }
.modal { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; max-width: 480px; width: 90%; }

/* ── 页脚 ── */
.footer { text-align: center; padding: 40px 0; color: var(--text-muted); font-size: 0.85rem; border-top: 1px solid var(--border); }

/* ── API Key 显示 ── */
.key-display {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 16px;
  font-family: var(--font-mono); font-size: 0.85rem;
  display: flex; align-items: center; justify-content: space-between;
  word-break: break-all;
}
.key-display .copy-btn { background: none; border: none; color: var(--accent-light); cursor: pointer; font-size: 1.1rem; }

/* ── 推荐链接展示 ── */
.ref-link-box {
  display: flex; align-items: center; gap: 10px;
  background: var(--bg-secondary); border: 1px dashed var(--accent);
  border-radius: var(--radius-sm); padding: 14px 18px;
}
.ref-link-box code { flex: 1; font-family: var(--font-mono); font-size: 0.85rem; color: var(--accent-light); word-break: break-all; }

/* ── 响应式 ── */
@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .navbar { padding: 10px 16px; }
  .nav-links { gap: 12px; font-size: 0.85rem; }
  .container { padding: 0 16px; }
  .section { padding: 48px 0; }
}

/* ── 仪表盘网格 ── */
.dashboard-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 768px) { .dashboard-grid { grid-template-columns: 1fr; } }

/* ── 预加载样式 ── */
.loading { color: var(--text-muted); text-align: center; padding: 40px; }
.empty { color: var(--text-muted); text-align: center; padding: 30px; font-size: 0.9rem; }