:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #21242f;
    --bg-hover: #2a2e3b;
    --border: #2e3240;
    --text-primary: #e4e6eb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

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

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

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* Layout */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 24px 16px;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 8px 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
}

.sidebar-logo svg { width: 32px; height: 32px; }
.sidebar-logo h1 { font-size: 20px; font-weight: 700; }

.nav-section { margin-bottom: 24px; }
.nav-section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: 0 12px;
    margin-bottom: 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 14px;
    transition: all 0.15s;
}

.nav-link:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-link.active { background: var(--accent); color: white; }
.nav-link svg { width: 18px; height: 18px; flex-shrink: 0; }

.main-content {
    margin-left: 260px;
    flex: 1;
    padding: 32px;
    max-width: 1200px;
}

/* Page header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.page-header h2 { font-size: 24px; font-weight: 700; }

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 16px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.stat-card .stat-value { font-size: 32px; font-weight: 700; }
.stat-card .stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

/* Table */
.table-container { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
th { color: var(--text-muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }
tr:hover { background: var(--bg-hover); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-ghost { background: transparent; color: var(--text-secondary); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

input[type="text"], input[type="email"], input[type="password"],
input[type="number"], select, textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.15s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
}

textarea { min-height: 200px; font-family: 'JetBrains Mono', monospace; resize: vertical; }

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.badge-success { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.badge-info { background: rgba(99, 102, 241, 0.15); color: var(--accent); }

/* Search */
.search-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.search-bar input {
    flex: 1;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
}

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active { display: flex; }

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal h3 { font-size: 18px; margin-bottom: 20px; }

/* Toast */
.toast {
    position: fixed;
    top: 24px;
    right: 24px;
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    z-index: 2000;
    animation: slideIn 0.3s ease;
}

.toast-success { background: var(--success); color: white; }
.toast-error { background: var(--danger); color: white; }

@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Auth pages */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
}

.auth-card h2 { text-align: center; margin-bottom: 8px; }
.auth-card .subtitle { text-align: center; color: var(--text-secondary); margin-bottom: 32px; font-size: 14px; }

/* Pagination */
.pagination {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 24px;
}

.pagination button {
    padding: 6px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    cursor: pointer;
}

.pagination button.active { background: var(--accent); color: white; border-color: var(--accent); }

/* Multi-select tags */
.tag-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 16px;
    font-size: 12px;
}
.tag .remove { cursor: pointer; color: var(--text-muted); }
.tag .remove:hover { color: var(--danger); }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; padding: 16px; }
    .card-grid { grid-template-columns: 1fr; }
}