/* ============================================================
   TokenHub - 聚合Token中转站 样式表
   ============================================================ */

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #131825;
  --bg-card: #1a2033;
  --bg-card-hover: #222a3f;
  --text-primary: #e8ecf1;
  --text-secondary: #9ba5b8;
  --text-muted: #6b7387;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-green: #10b981;
  --accent-orange: #f59e0b;
  --accent-red: #ef4444;
  --border: #2a3245;
  --border-hover: #3a4560;
  --gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --gradient-text: linear-gradient(135deg, #60a5fa, #a78bfa);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { 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;
  overflow-x: hidden;
}

/* ---- 导航栏 ---- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-size: 22px; font-weight: 700;
  display: flex; align-items: center; gap: 10px;
}
.nav-logo .logo-icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.nav-logo .gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  color: var(--text-secondary); text-decoration: none;
  padding: 8px 16px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary); background: var(--bg-card);
}
.nav-cta {
  background: var(--gradient); color: white !important;
  padding: 8px 20px !important; border-radius: var(--radius-sm) !important;
}

/* ---- Hero ---- */
.hero {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center; padding: 100px 24px 60px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: 0; left: 50%;
  transform: translateX(-50%); width: 800px; height: 600px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.15), transparent 60%);
  pointer-events: none;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(59, 130, 246, 0.1); border: 1px solid rgba(59, 130, 246, 0.3);
  color: #60a5fa; padding: 6px 16px; border-radius: 100px;
  font-size: 13px; font-weight: 500; margin-bottom: 28px;
}
.hero h1 {
  font-size: 56px; font-weight: 800; line-height: 1.15;
  margin-bottom: 20px; max-width: 800px;
}
.hero h1 .gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p {
  font-size: 18px; color: var(--text-secondary);
  max-width: 640px; margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; cursor: pointer;
  border: none; transition: var(--transition); text-decoration: none;
}
.btn-primary { background: var(--gradient); color: white; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4); }
.btn-secondary {
  background: var(--bg-card); color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--border-hover); }

/* ---- 供应商卡片 ---- */
.provider-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px; max-width: 1200px; margin: 0 auto;
}
.provider-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
  transition: var(--transition); position: relative; overflow: hidden;
}
.provider-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--card-color, var(--accent-blue));
}
.provider-card:hover {
  transform: translateY(-4px); border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
}
.provider-header { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.provider-logo {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700; color: white;
}
.provider-name { font-size: 18px; font-weight: 700; }
.provider-tagline { font-size: 13px; color: var(--text-muted); }
.provider-status {
  position: absolute; top: 20px; right: 20px;
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--accent-green);
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-green); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.provider-models { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.model-chip {
  background: rgba(255,255,255,0.06); border: 1px solid var(--border);
  padding: 6px 14px; border-radius: 100px; font-size: 12px; color: var(--text-secondary);
}
.provider-stat { display: flex; gap: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.provider-stat-item { text-align: center; }
.provider-stat-value { font-size: 20px; font-weight: 700; }
.provider-stat-label { font-size: 11px; color: var(--text-muted); }

/* ---- 通用 Section ---- */
.section { padding: 80px 24px; }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { font-size: 36px; font-weight: 800; margin-bottom: 12px; }
.section-title p { font-size: 16px; color: var(--text-secondary); max-width: 600px; margin: 0 auto; }
.container { max-width: 1200px; margin: 0 auto; }

/* ---- 特性 ---- */
.features-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 24px; transition: var(--transition);
}
.feature-card:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.feature-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: rgba(59, 130, 246, 0.1);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 16px;
}
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); }

/* ---- 代码块 ---- */
.code-block {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 20px;
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  font-size: 13px; overflow-x: auto; position: relative;
}
.code-block pre { white-space: pre; }
.code-comment { color: var(--text-muted); }
.code-key { color: #c792ea; }
.code-string { color: #c3e88d; }
.code-number { color: #f78c6c; }

/* ---- Dashboard ---- */
.dashboard-layout { display: flex; min-height: 100vh; padding-top: 64px; }
.dashboard-sidebar {
  width: 240px; background: var(--bg-secondary); border-right: 1px solid var(--border);
  padding: 20px 0; position: fixed; top: 64px; bottom: 0; overflow-y: auto;
}
.sidebar-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 24px; color: var(--text-secondary);
  cursor: pointer; transition: var(--transition); font-size: 14px;
}
.sidebar-item:hover, .sidebar-item.active {
  background: var(--bg-card); color: var(--text-primary);
  border-left: 3px solid var(--accent-blue);
}
.dashboard-main { flex: 1; margin-left: 240px; padding: 32px; }

.stat-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.stat-card-label { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.stat-card-value { font-size: 32px; font-weight: 800; }
.stat-card-change { font-size: 12px; margin-top: 8px; }
.stat-card-change.up { color: var(--accent-green); }
.stat-card-change.down { color: var(--accent-red); }

.chart-container {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px; margin-bottom: 24px;
}
.chart-container h3 { font-size: 16px; font-weight: 600; margin-bottom: 20px; }

table { width: 100%; border-collapse: collapse; }
table th {
  text-align: left; padding: 12px 16px; font-size: 12px;
  color: var(--text-muted); border-bottom: 1px solid var(--border);
  text-transform: uppercase; letter-spacing: 0.5px;
}
table td { padding: 14px 16px; border-bottom: 1px solid var(--border); font-size: 14px; }

/* ---- Footer ---- */
.footer {
  background: var(--bg-secondary); border-top: 1px solid var(--border);
  padding: 48px 24px; text-align: center;
}
.footer p { color: var(--text-muted); font-size: 14px; }

/* ---- 响应式 ---- */
@media (max-width: 768px) {
  .hero h1 { font-size: 36px; }
  .hero p { font-size: 16px; }
  .dashboard-sidebar { display: none; }
  .dashboard-main { margin-left: 0; }
  .nav-links a:not(.nav-cta) { display: none; }
  .section { padding: 48px 16px; }
}