* { box-sizing: border-box; }

:root {
    --bg: #0f172a;
    --bg-2: #1e293b;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --border: #e2e8f0;
    --text: #0f172a;
    --text-2: #475569;
    --muted: #94a3b8;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;
    --info: #0891b2;
    --radius: 0.5rem;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

body.admin {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    background: var(--surface-2);
    color: var(--text);
    line-height: 1.5;
}

/* Login screen */
.admin-auth {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e40af 100%);
    padding: 2rem;
}

.admin-auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}

.admin-auth-card h1 {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
}

.admin-auth-card p { color: var(--text-2); margin-bottom: 1.5rem; }

/* Layout */
.admin-shell {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
}

.admin-sidebar {
    background: var(--bg);
    color: #cbd5e1;
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.admin-brand {
    padding: 0 1.5rem 1.5rem;
    border-bottom: 1px solid #1e293b;
    margin-bottom: 1rem;
    display: block;
    color: white;
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.admin-nav { display: flex; flex-direction: column; gap: 0.125rem; padding: 0 0.75rem; }
.admin-nav-section { padding: 1rem 0.75rem 0.5rem; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }

.admin-nav a {
    color: #cbd5e1;
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    transition: background 0.15s;
}

.admin-nav a:hover { background: rgba(255,255,255,0.05); color: white; }
.admin-nav a.active { background: var(--primary); color: white; }

.admin-content {
    padding: 2rem 2.5rem;
    max-width: 1400px;
    width: 100%;
}

.admin-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.admin-topbar h1 { margin: 0; font-size: 1.5rem; font-weight: 700; }

/* Cards & stats */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
}

.stat-card .label { font-size: 0.8rem; color: var(--text-2); margin-bottom: 0.25rem; text-transform: uppercase; letter-spacing: 0.04em; }
.stat-card .value { font-size: 1.75rem; font-weight: 700; color: var(--text); }
.stat-card .meta { font-size: 0.75rem; color: var(--muted); margin-top: 0.25rem; }

/* Tables */
.admin-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.admin-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
}

.admin-card-header h2 { margin: 0; font-size: 1rem; font-weight: 600; }

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.admin-table th {
    text-align: left;
    padding: 0.75rem 1.25rem;
    font-weight: 600;
    color: var(--text-2);
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.admin-table td {
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: rgba(0,0,0,0.015); }

/* Forms */
.form-row { margin-bottom: 1.25rem; }
.form-row label { display: block; margin-bottom: 0.5rem; font-weight: 500; font-size: 0.875rem; color: var(--text); }
.form-row .help { font-size: 0.75rem; color: var(--text-2); margin-top: 0.375rem; }

.input, .select, .textarea {
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-family: inherit;
    background: var(--surface);
    color: var(--text);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.input:focus, .select:focus, .textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.textarea { min-height: 120px; resize: vertical; font-family: ui-monospace, 'SF Mono', Menlo, Monaco, Consolas, monospace; font-size: 0.825rem; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 720px) { .form-grid { grid-template-columns: 1fr; } }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, border-color 0.15s;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }

.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--surface-2); }

.btn-danger { background: var(--surface); color: var(--danger); border-color: var(--border); }
.btn-danger:hover { background: var(--danger); color: white; border-color: var(--danger); }

.btn-success { background: var(--success); color: white; }

.btn-sm { padding: 0.25rem 0.625rem; font-size: 0.75rem; }

.btn-row { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }

/* Badges */
.badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.badge-gray { background: rgba(100,116,139,0.12); color: #475569; }
.badge-blue { background: rgba(37,99,235,0.12); color: var(--primary); }
.badge-green { background: rgba(5,150,105,0.12); color: var(--success); }
.badge-amber { background: rgba(217,119,6,0.12); color: var(--warning); }
.badge-red { background: rgba(220,38,38,0.12); color: var(--danger); }
.badge-cyan { background: rgba(8,145,178,0.12); color: var(--info); }

/* Alerts */
.alert { padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; font-size: 0.875rem; border: 1px solid; }
.alert-success { background: rgba(5,150,105,0.08); border-color: rgba(5,150,105,0.25); color: #064e3b; }
.alert-error { background: rgba(220,38,38,0.08); border-color: rgba(220,38,38,0.25); color: #7f1d1d; }

.errors { color: var(--danger); font-size: 0.825rem; margin-top: 0.375rem; }

/* Filter bar */
.filter-bar { display: flex; gap: 0.75rem; padding: 0.875rem 1.25rem; background: var(--surface-2); border-bottom: 1px solid var(--border); flex-wrap: wrap; align-items: end; }
.filter-bar .form-row { margin: 0; flex: 1; min-width: 160px; }

/* Pagination */
.pagination { padding: 1rem 1.25rem; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; gap: 1rem; font-size: 0.875rem; color: var(--text-2); }
.pagination .links a, .pagination .links span { padding: 0.25rem 0.625rem; border: 1px solid var(--border); border-radius: var(--radius); margin: 0 0.125rem; text-decoration: none; color: var(--text); }
.pagination .links a:hover { background: var(--surface-2); }
.pagination .links span[aria-current] { background: var(--primary); color: white; border-color: var(--primary); }

/* Empty state */
.empty { padding: 3rem 1.5rem; text-align: center; color: var(--text-2); }
.empty h3 { margin: 0 0 0.5rem; color: var(--text); }