:root {
    --panel-bg: #f1f5f9;
    --panel-sidebar: #0a2540;
    --panel-accent: #14b8a6;
    --panel-text: #1e293b;
    --panel-muted: #64748b;
    --panel-border: #e2e8f0;
    --panel-radius: 12px;
}

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

body.panel-body {
    font-family: 'DM Sans', system-ui, sans-serif;
    background: var(--panel-bg);
    color: var(--panel-text);
    min-height: 100vh;
}

.panel-layout {
    display: flex;
    min-height: 100vh;
}

.panel-sidebar {
    width: 260px;
    background: var(--panel-sidebar);
    color: #fff;
    padding: 24px 16px;
    flex-shrink: 0;
}

.panel-sidebar__brand {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 32px;
    padding: 0 8px;
}

.panel-sidebar__brand span {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    color: rgba(255,255,255,0.6);
    margin-top: 4px;
}

.panel-nav a {
    display: block;
    padding: 10px 12px;
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 4px;
    font-size: 0.9rem;
}

.panel-nav a:hover,
.panel-nav a.active {
    background: rgba(20, 184, 166, 0.2);
    color: #fff;
}

.panel-main {
    flex: 1;
    padding: 32px;
    overflow-x: auto;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 12px;
}

.panel-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

.panel-card {
    background: #fff;
    border-radius: var(--panel-radius);
    border: 1px solid var(--panel-border);
    padding: 24px;
    margin-bottom: 24px;
}

.panel-card h2 {
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.panel-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.panel-stat {
    background: #fff;
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    padding: 20px;
}

.panel-stat__value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--panel-sidebar);
}

.panel-stat__label {
    font-size: 0.85rem;
    color: var(--panel-muted);
    margin-top: 4px;
}

.panel-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.panel-form .form-group {
    margin-bottom: 16px;
}

.panel-form label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.panel-form input,
.panel-form select,
.panel-form textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
}

.panel-form textarea {
    min-height: 100px;
    resize: vertical;
}

.panel-form input[type="color"] {
    height: 44px;
    padding: 4px;
    cursor: pointer;
}

.panel-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--panel-sidebar);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}

.panel-btn:hover { opacity: 0.9; }

.panel-btn--accent {
    background: var(--panel-accent);
}

.panel-btn--outline {
    background: transparent;
    color: var(--panel-sidebar);
    border: 1px solid var(--panel-border);
}

.panel-alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.panel-alert--success {
    background: #d1fae5;
    color: #065f46;
}

.panel-alert--error {
    background: #fee2e2;
    color: #991b1b;
}

.panel-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

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

.panel-table th {
    font-weight: 600;
    color: var(--panel-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
}

.panel-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.panel-badge--active { background: #d1fae5; color: #065f46; }
.panel-badge--inactive { background: #fee2e2; color: #991b1b; }
.panel-badge--pending { background: #fef3c7; color: #92400e; }
.panel-badge--confirmed { background: #d1fae5; color: #065f46; }
.panel-badge--rejected { background: #fee2e2; color: #991b1b; }
.panel-badge--cancelled { background: #e2e8f0; color: #475569; }

.panel-btn--sm { padding: 6px 12px; font-size: 0.8rem; }
.panel-btn--success { background: #059669; }

.panel-nav-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    margin-left: 6px;
    background: #f59e0b;
    color: #fff;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
}

.panel-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.panel-filter {
    padding: 8px 14px;
    border-radius: 20px;
    background: #fff;
    border: 1px solid var(--panel-border);
    text-decoration: none;
    color: var(--panel-text);
    font-size: 0.85rem;
}

.panel-filter.active,
.panel-filter:hover {
    background: var(--panel-sidebar);
    color: #fff;
    border-color: var(--panel-sidebar);
}

.panel-row--highlight { background: #fffbeb; }

.panel-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.panel-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.panel-card__header a { font-size: 0.85rem; color: var(--panel-accent); }

.panel-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--panel-border);
    flex-wrap: wrap;
}

.panel-list-item:last-child { border-bottom: none; }

.panel-list-item--unread { background: #f0fdf4; margin: 0 -24px; padding: 12px 24px; }

.panel-stat--alert .panel-stat__value { color: #d97706; }

.panel-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.panel-detail-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--panel-muted);
    margin-bottom: 4px;
}

.panel-actions-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.panel-notification-list { list-style: none; }

.panel-notification-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--panel-border);
}

.panel-notification-item--unread {
    background: #f0fdf4;
    border-left: 4px solid var(--panel-accent);
}

.panel-notification-item p {
    margin: 4px 0;
    font-size: 0.9rem;
    color: var(--panel-muted);
}

.panel-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.panel-preview {
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    padding: 16px;
    margin-top: 16px;
}

@media (max-width: 768px) {
    .panel-layout { flex-direction: column; }
    .panel-sidebar { width: 100%; }
    .panel-form .form-row { grid-template-columns: 1fr; }
    .panel-main { padding: 20px 16px; }
    .panel-grid-2,
    .panel-actions-grid { grid-template-columns: 1fr; }
}