:root {
    --bg: #0f172a;
    --panel: #111c33;
    --card: #17213a;
    --border: #24314f;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --accent: #38bdf8;
    --danger: #ef4444;
    --success: #22c55e;
}

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

body {
    font-family: "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    padding: 30px;
}

.container {
    max-width: 1400px;
    margin: auto;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

h1,
h2,
h3 {
    margin-bottom: 15px;
}

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

a:hover {
    text-decoration: underline;
}

.navbar {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 15px 20px;
    margin-bottom: 20px;

    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: 15px;
}

input,
select {
    width: 100%;
    background: var(--panel);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 10px;
}

button {
    background: var(--accent);
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
}

button:hover {
    opacity: 0.9;
}

.btn-danger {
    background: var(--danger);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th {
    background: var(--panel);
}

th,
td {
    padding: 12px;
    border: 1px solid var(--border);
    text-align: left;
}

tr:nth-child(even) {
    background: rgba(255,255,255,0.02);
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: rgba(34,197,94,.15);
    color: #4ade80;
}

.badge-danger {
    background: rgba(239,68,68,.15);
    color: #f87171;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.stat-number {
    font-size: 28px;
    font-weight: bold;
    margin-top: 5px;
}

@media (max-width: 1000px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 700px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}