:root {
    --bg: #0f172a;
    --card-bg: #1e293b;
    --card-bg-light: #2d3a4f;
    --border: #334155;
    --primary: #6366f1;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --text: #f8fafc;
    --muted: #94a3b8;
    --hover-bg: #2d3a4f;
}

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

body {
    font-family: system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    min-height: 100vh;
}

/* Login page */
body.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
}

.login-box {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 16px;
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border);
}

.login-box h1 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary);
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: var(--card-bg);
    border-right: 1px solid var(--border);
    padding: 20px;
    height: 100vh;
    position: sticky;
    top: 0;
}

.sidebar h2 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 18px;
}

.sidebar ul {
    list-style: none;
}

.sidebar li {
    margin-bottom: 10px;
}

.sidebar a {
    color: var(--muted);
    text-decoration: none;
    padding: 10px;
    display: block;
    border-radius: 8px;
    transition: all 0.2s;
}

.sidebar a:hover,
.sidebar a.active {
    background: var(--hover-bg);
    color: var(--text);
}

/* Main content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.header {
    background: var(--card-bg);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header h1 {
    font-size: 20px;
    color: var(--primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--muted);
}

.container {
    padding: 20px;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

.stat-card h3 {
    font-size: 32px;
    margin-bottom: 5px;
}

.stat-card p {
    color: var(--muted);
    text-transform: uppercase;
    font-size: 12px;
}

.stat-card.pending h3 { color: var(--warning); }
.stat-card.approved h3 { color: var(--success); }
.stat-card.cancelled h3 { color: var(--danger); }
.stat-card.revenue h3 { color: var(--primary); }

/* Forms */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    color: var(--muted);
    font-size: 12px;
    margin-bottom: 5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group small {
    color: var(--muted);
    font-size: 11px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

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

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

.btn-warning {
    background: var(--warning);
    color: #000;
}

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

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
}

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

.table th {
    background: var(--bg);
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
}

.table td {
    font-size: 13px;
}

.table .code {
    background: #581c87;
    color: #e9d5ff;
    padding: 3px 8px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 11px;
}

.table .phone {
    font-family: monospace;
    color: var(--primary);
}

.table .proof-img {
    max-width: 50px;
    max-height: 50px;
    border-radius: 4px;
    cursor: pointer;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-decoration: none;
}

.badge-pending {
    background: var(--warning);
    color: #000;
}

.badge-approved {
    background: var(--success);
    color: #fff;
}

.badge-cancelled,
.badge-rejected {
    background: var(--danger);
    color: #fff;
}

/* Actions */
.actions {
    display: flex;
    gap: 5px;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.card h2 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--primary);
}

/* Alerts */
.alert {
    padding: 10px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 13px;
}

.alert-success {
    background: #064e3b;
    color: #6ee7b7;
}

.alert-error {
    background: #7f1d1d;
    color: #fca5a5;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    margin: 20px;
}

.modal .close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--danger);
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal#imageModal img {
    max-width: 90%;
    max-height: 90%;
    border-radius: 8px;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        position: static;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .table {
        font-size: 12px;
    }
    .actions {
        flex-direction: column;
    }
}