:root {
  --primary: #6C63FF;
  --primary-dark: #5A52D5;
  --bg: #f8f9fa;
  --card: #ffffff;
  --text: #1a1a2e;
  --muted: #6c757d;
  --border: #e9ecef;
  --success: #28a745;
  --warning: #ffc107;
  --danger: #dc3545;
  --sidebar-width: 240px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: 8px; border: none; cursor: pointer; font-size: 14px; font-weight: 500; transition: all .2s; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.card { background: var(--card); border-radius: 12px; padding: 24px; box-shadow: 0 1px 3px rgba(0,0,0,.08); border: 1px solid var(--border); }
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-active { background: #d4edda; color: #155724; }
.badge-trial { background: #fff3cd; color: #856404; }
.badge-cancelled { background: #f8d7da; color: #721c24; }
.sidebar { position: fixed; left: 0; top: 0; bottom: 0; width: var(--sidebar-width); background: #1a1a2e; color: #fff; padding: 0; display: flex; flex-direction: column; z-index: 100; }
.sidebar-brand { padding: 24px 20px; border-bottom: 1px solid rgba(255,255,255,.1); }
.sidebar-brand h2 { font-size: 18px; font-weight: 700; color: var(--primary); }
.sidebar-brand p { font-size: 11px; color: rgba(255,255,255,.5); margin-top: 2px; }
.sidebar-nav { flex: 1; padding: 16px 0; overflow-y: auto; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 11px 20px; color: rgba(255,255,255,.7); font-size: 14px; cursor: pointer; transition: all .2s; text-decoration: none; }
.nav-item:hover,.nav-item.active { background: rgba(108,99,255,.2); color: #fff; }
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.sidebar-footer { padding: 16px 20px; border-top: 1px solid rgba(255,255,255,.1); }
.main { margin-left: var(--sidebar-width); padding: 32px; min-height: 100vh; }
.page-header { margin-bottom: 28px; }
.page-header h1 { font-size: 24px; font-weight: 700; }
.page-header p { color: var(--muted); margin-top: 4px; }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2,1fr); }
.grid-3 { grid-template-columns: repeat(3,1fr); }
.stat-card { background: var(--card); border-radius: 12px; padding: 20px 24px; border: 1px solid var(--border); }
.stat-label { font-size: 13px; color: var(--muted); font-weight: 500; }
.stat-value { font-size: 32px; font-weight: 700; margin-top: 4px; }
.stat-sub { font-size: 12px; color: var(--muted); margin-top: 4px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; color: var(--text); }
.form-group input,.form-group select { width: 100%; padding: 10px 14px; border: 1.5px solid var(--border); border-radius: 8px; font-size: 14px; background: #fff; transition: border-color .2s; }
.form-group input:focus,.form-group select:focus { outline: none; border-color: var(--primary); }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; padding: 12px 16px; border-bottom: 2px solid var(--border); font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.table td { padding: 14px 16px; border-bottom: 1px solid var(--border); }
.table tr:last-child td { border-bottom: none; }
.alert { padding: 12px 16px; border-radius: 8px; font-size: 14px; margin-bottom: 16px; }
.alert-success { background: #d4edda; color: #155724; }
.alert-error { background: #f8d7da; color: #721c24; }
.alert-info { background: #d1ecf1; color: #0c5460; }
.tier-card { border: 2px solid var(--border); border-radius: 12px; padding: 24px; text-align: center; transition: all .2s; }
.tier-card.current { border-color: var(--primary); background: #f0effe; }
.tier-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.tier-price { font-size: 36px; font-weight: 800; color: var(--primary); }
.tier-price small { font-size: 14px; font-weight: 400; color: var(--muted); }
.tier-features { list-style: none; margin: 16px 0; text-align: left; }
.tier-features li { padding: 6px 0; font-size: 13px; }
.tier-features li::before { content: "✓ "; color: var(--success); font-weight: 700; }
@media (max-width: 768px) { .sidebar { transform: translateX(-100%); } .main { margin-left: 0; padding: 16px; } .grid-3 { grid-template-columns: 1fr; } .grid-2 { grid-template-columns: 1fr; } }