:root {
    --bg: #0f172a;
    --surface: #1e293b;
    --border: #334155;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --danger: #ef4444;
    --success: #22c55e;
}

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

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

.container { max-width: 1200px; margin: 0 auto; padding: 2rem; }

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

nav .brand { font-size: 1.25rem; font-weight: 700; color: var(--primary); text-decoration: none; }
nav .links a { color: var(--text-muted); text-decoration: none; margin-left: 1.5rem; }
nav .links a:hover { color: var(--text); }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card h2 { margin-bottom: 1rem; font-size: 1.1rem; color: var(--text-muted); }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card { text-align: center; }
.stat-card .value { font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat-card .label { color: var(--text-muted); font-size: 0.875rem; }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 600; font-size: 0.875rem; text-transform: uppercase; }

.badge {
    display: inline-block; padding: 0.25rem 0.75rem; border-radius: 1rem;
    font-size: 0.75rem; font-weight: 600;
}
.badge-active { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-inactive { background: rgba(239,68,68,0.15); color: var(--danger); }

.btn {
    display: inline-block; padding: 0.5rem 1rem; border-radius: 0.375rem;
    font-size: 0.875rem; font-weight: 500; cursor: pointer; border: none;
    text-decoration: none; color: #fff;
}
.btn-primary { background: var(--primary); }
.btn-danger { background: var(--danger); }
.btn-sm { padding: 0.25rem 0.75rem; font-size: 0.75rem; }

input, select {
    background: var(--bg); border: 1px solid var(--border); color: var(--text);
    padding: 0.5rem 0.75rem; border-radius: 0.375rem; width: 100%;
    margin-bottom: 0.75rem;
}

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }

.login-wrapper {
    display: flex; justify-content: center; align-items: center;
    min-height: 100vh;
}
.login-card { width: 100%; max-width: 400px; }
.error { color: var(--danger); margin-bottom: 1rem; }