:root {
  --primary: #6366f1; --primary-dark: #4f46e5; --primary-light: #818cf8;
  --bg: #0f172a; --bg-card: #1e293b; --bg-hover: #334155;
  --text: #f1f5f9; --text-dim: #94a3b8; --text-muted: #64748b;
  --green: #22c55e; --red: #ef4444; --yellow: #eab308; --blue: #3b82f6;
  --border: #334155; --radius: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }

.login-wrap { display: flex; justify-content: center; align-items: center; min-height: 100vh; background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 50%, #0c1220 100%); }
.login-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 20px; padding: 48px 40px; width: 400px; max-width: 90vw; }
.login-card h1 { text-align: center; font-size: 28px; margin-bottom: 8px; background: linear-gradient(135deg, var(--primary-light), #a78bfa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.login-card .subtitle { text-align: center; color: var(--text-dim); margin-bottom: 32px; font-size: 14px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 6px; }
.form-group input { width: 100%; padding: 12px 16px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 15px; outline: none; transition: border-color .2s; }
.form-group input:focus { border-color: var(--primary); }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 24px; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: all .2s; }
.btn-primary { background: var(--primary); color: white; width: 100%; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-dim); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary-light); }
.btn-green { background: var(--green); color: white; }
.btn-green:hover { background: #16a34a; }
.btn-red { background: var(--red); color: white; }
.btn-red:hover { background: #dc2626; }

.app { display: flex; min-height: 100vh; }
.sidebar { width: 240px; background: var(--bg-card); border-right: 1px solid var(--border); padding: 20px 0; flex-shrink: 0; display: flex; flex-direction: column; }
.sidebar-logo { padding: 0 24px 24px; font-size: 20px; font-weight: 700; background: linear-gradient(135deg, var(--primary-light), #a78bfa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.sidebar-nav { flex: 1; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 24px; color: var(--text-dim); cursor: pointer; transition: all .15s; font-size: 14px; }
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active { color: var(--primary-light); background: rgba(99,102,241,0.1); border-right: 3px solid var(--primary); }
.nav-item .icon { font-size: 18px; width: 24px; text-align: center; }
.sidebar-footer { padding: 16px 24px; border-top: 1px solid var(--border); }
.sidebar-footer .user-info { font-size: 13px; color: var(--text-dim); margin-bottom: 8px; }
.sidebar-footer .btn { width: 100%; }

.main { flex: 1; padding: 32px; overflow-y: auto; max-height: 100vh; }
.page-title { font-size: 24px; font-weight: 700; margin-bottom: 24px; }

.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; display: flex; align-items: center; justify-content: space-between; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.stat-card .label { font-size: 13px; color: var(--text-dim); margin-bottom: 8px; }
.stat-card .value { font-size: 28px; font-weight: 700; }
.stat-card .value.cost { color: var(--primary-light); }
.stat-card .value.show { color: var(--blue); }
.stat-card .value.click { color: var(--green); }
.stat-card .value.convert { color: var(--yellow); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--text-dim); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; position: sticky; top: 0; background: var(--bg-card); }
tr:hover { background: var(--bg-hover); }

.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 20px; }
.filter-bar input, .filter-bar select { padding: 8px 14px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 14px; outline: none; }
.filter-bar input:focus, .filter-bar select:focus { border-color: var(--primary); }

.badge { display: inline-block; padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-green { background: rgba(34,197,94,0.15); color: var(--green); }
.badge-red { background: rgba(239,68,68,0.15); color: var(--red); }
.badge-yellow { background: rgba(234,179,8,0.15); color: var(--yellow); }

.toast { position: fixed; top: 20px; right: 20px; padding: 14px 24px; border-radius: 10px; font-size: 14px; z-index: 9999; animation: slideIn .3s ease; }
.toast-success { background: var(--green); color: white; }
.toast-error { background: var(--red); color: white; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

.config-form .form-row { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.config-form .form-row label { width: 120px; font-size: 14px; color: var(--text-dim); flex-shrink: 0; }
.config-form .form-row input { flex: 1; padding: 10px 14px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 14px; outline: none; }
.config-form .form-row input:focus { border-color: var(--primary); }

.empty { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty .icon { font-size: 48px; margin-bottom: 16px; }
.empty p { font-size: 15px; }

.loading { display: inline-block; width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 768px) {
  .sidebar { display: none; }
  .main { padding: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-card .value { font-size: 22px; }
  .mobile-nav { display: flex !important; }
}
.mobile-nav { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: var(--bg-card); border-top: 1px solid var(--border); z-index: 100; justify-content: space-around; padding: 8px 0; }
.mobile-nav-item { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 6px; color: var(--text-dim); font-size: 11px; cursor: pointer; }
.mobile-nav-item.active { color: var(--primary-light); }
.mobile-nav-item .icon { font-size: 20px; }

.status-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 20px; }
.status-card { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 16px; }
.status-card .label { font-size: 12px; color: var(--text-dim); margin-bottom: 4px; }
.status-card .val { font-size: 20px; font-weight: 700; color: var(--primary-light); }