:root {
  --bg: #090d14;
  --card: #111827;
  --card-hover: #1a2332;
  --border: #1e2d45;
  --border-light: #2a3a55;
  --text: #e8edf5;
  --text-dim: #b0bec5;
  --muted: #6b7c93;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99,102,241,0.2);
  --green: #22c55e;
  --green-bg: rgba(34,197,94,0.1);
  --red: #ef4444;
  --red-bg: rgba(239,68,68,0.1);
  --orange: #f59e0b;
  --orange-bg: rgba(245,158,11,0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
}

* { 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);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* Header */
header {
  background: rgba(9,13,20,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  position: sticky; top: 0; z-index: 100;
}

.nav {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none;
}

.logo-icon { 
  font-size: 24px; 
  filter: drop-shadow(0 0 8px rgba(99,102,241,0.4));
}

.logo h1 {
  font-size: 20px; font-weight: 800;
  background: linear-gradient(135deg, #818cf8, #c4b5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.badge {
  font-size: 11px; padding: 3px 10px;
  background: var(--accent-glow); color: var(--accent-light);
  border-radius: 20px; font-weight: 700;
  letter-spacing: 0.5px;
}

.nav nav { display: flex; gap: 8px; }

.nav nav a {
  color: var(--text-dim); text-decoration: none;
  font-size: 14px; padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.nav nav a:hover { 
  color: var(--text); 
  background: rgba(255,255,255,0.05);
}

/* Hero */
.hero {
  text-align: center; padding: 80px 24px 60px;
  background: radial-gradient(ellipse at 50% 0%, rgba(99,102,241,0.08) 0%, transparent 60%);
}

.hero h2 {
  font-size: 42px; font-weight: 800; margin-bottom: 16px;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #e8edf5, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 17px; color: var(--text-dim); margin-bottom: 32px;
}

.hero-stats {
  display: flex; justify-content: center; gap: 16px;
  flex-wrap: wrap;
}

.hstat {
  text-align: center;
  padding: 16px 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.2s, border-color 0.2s;
}
.hstat:hover { transform: translateY(-2px); border-color: var(--accent); }

.hstat .hnum {
  display: block;
  font-size: 24px; font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hstat span:last-child {
  font-size: 12px; color: var(--muted);
  margin-top: 4px; display: block;
}

/* Cards */
main { max-width: 1200px; margin: 0 auto; padding: 0 24px 48px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--border-light); }

.card h3 {
  font-size: 18px; margin-bottom: 20px;
  padding-bottom: 14px; border-bottom: 1px solid var(--border);
  font-weight: 700;
  display: flex; align-items: center; gap: 8px;
}

/* Forms */
.form-group, .form-row {
  display: flex; gap: 12px; align-items: center;
}

.form-row { flex-wrap: wrap; }

input, button, select {
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s;
}

input { flex: 1; min-width: 150px; }
input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
input::placeholder { color: var(--muted); }

button {
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border: none;
  color: #fff;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}
button:hover { 
  filter: brightness(1.1);
  box-shadow: 0 4px 16px rgba(99,102,241,0.4);
  transform: translateY(-1px);
}
button:active { transform: translateY(0); }
button:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
button.danger { 
  background: linear-gradient(135deg, var(--red), #f87171);
  box-shadow: 0 2px 8px rgba(239,68,68,0.3);
}
button.outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent-light);
  box-shadow: none;
}
button.outline:hover {
  background: var(--accent-glow);
}

.hint { font-size: 13px; color: var(--muted); margin-top: 8px; }
.hint.success { color: var(--green); }
.hint.error { color: var(--red); }

/* Tabs */
.tabs { display: flex; gap: 6px; margin-bottom: 16px; }
.tab {
  padding: 8px 20px; font-size: 13px;
  background: transparent; border: 1px solid var(--border);
  color: var(--muted); border-radius: var(--radius-sm); 
  cursor: pointer; font-weight: 500;
  transition: all 0.2s;
}
.tab:hover { border-color: var(--accent); color: var(--text); }
.tab.active { 
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-color: transparent; color: #fff; 
  box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}

/* Model Grid */
.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}

.model-item {
  padding: 22px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.2s;
}
.model-item:hover { 
  border-color: var(--accent); 
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(99,102,241,0.1);
}

.model-item .model-name {
  font-weight: 700; font-size: 16px; margin-bottom: 6px;
}
.model-item .model-provider {
  font-size: 12px; color: var(--muted); margin-bottom: 10px;
}
.model-item .model-pricing {
  font-size: 12px; color: var(--orange);
  background: var(--orange-bg);
  padding: 4px 10px; border-radius: 4px; display: inline-block;
}

.loading { color: var(--muted); padding: 20px; text-align: center; }

/* Code */
pre {
  background: #060a10;
  padding: 18px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  border: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.7;
}

code { font-family: 'Fira Code', 'Cascadia Code', 'JetBrains Mono', 'Consolas', monospace; font-size: 13px; }

/* Tables */
table { width: 100%; border-collapse: collapse; margin-top: 8px; }

th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

th { 
  color: var(--muted); font-weight: 600; 
  text-transform: uppercase; font-size: 11px; letter-spacing: 0.5px;
  background: rgba(0,0,0,0.2);
}

tr:hover td { background: rgba(99,102,241,0.04); }

.actions { display: flex; gap: 8px; }

.status { font-size: 12px; padding: 3px 10px; border-radius: 12px; font-weight: 600; }
.status.on { background: var(--green-bg); color: var(--green); }
.status.off { background: var(--red-bg); color: var(--red); }

/* Order Status */
.order-status { font-size: 12px; padding: 3px 10px; border-radius: 12px; font-weight: 600; }
.order-status.pending { background: var(--orange-bg); color: var(--orange); }
.order-status.paid { background: var(--green-bg); color: var(--green); }

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 14px;
}

.stat {
  padding: 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  transition: all 0.2s;
}
.stat:hover { border-color: var(--accent); transform: translateY(-1px); }

.stat .num {
  display: block;
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}

.stat span:last-child {
  font-size: 12px; color: var(--muted);
}

/* Links */
a { color: var(--accent-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }

/* Footer */
footer {
  text-align: center;
  padding: 32px 24px;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
  background: var(--card);
}

footer a { color: var(--text-dim); }
footer a:hover { color: var(--accent-light); }

/* Toast */
.toast-container{position:fixed;top:24px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:10px;pointer-events:none}
.toast{pointer-events:auto;padding:14px 22px;border-radius:10px;font-size:14px;font-weight:500;color:#fff;animation:toastIn .35s ease,toastOut .3s ease 3s forwards;max-width:400px;box-shadow:0 8px 32px rgba(0,0,0,.5);display:flex;align-items:center;gap:10px;backdrop-filter:blur(10px);}
.toast.success{background:rgba(22,101,52,0.95);border:1px solid #22c55e}
.toast.error{background:rgba(127,29,29,0.95);border:1px solid #ef4444}
.toast.info{background:rgba(30,58,95,0.95);border:1px solid #3b82f6}
.toast.warn{background:rgba(120,53,15,0.95);border:1px solid #f59e0b}
@keyframes toastIn{from{opacity:0;transform:translateX(50px)}to{opacity:1;transform:translateX(0)}}
@keyframes toastOut{from{opacity:1;transform:translateX(0)}to{opacity:0;transform:translateX(50px)}}

@media (max-width: 768px) {
  .nav { flex-direction: column; height: auto; padding: 12px 0; gap: 8px; }
  .hero { padding: 48px 16px 36px; }
  .hero h2 { font-size: 26px; }
  .hero-stats { gap: 10px; }
  .model-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { flex-direction: column; }
  header { padding: 0 12px; }
  .card { padding: 18px; }
  table { display: block; overflow-x: auto; }
  th, td { padding: 8px 10px; font-size: 12px; }
  input, button { font-size: 16px; }
  .auth-box { width: 95vw; padding: 24px; }
  .toast-container { left: 10px; right: 10px; top: 10px; }
  .toast { max-width: 100%; font-size: 13px; }
}