:root {
    --background: #ffffff;
    --foreground: #18181b;
    --card: #ffffff;
    --muted: #f4f4f5;
    --muted-foreground: #71717a;
    --border: #e4e4e7;
    --border-strong: #d4d4d8;
    --primary: #c8102e;
    --primary-hover: #a50d26;
    --primary-muted: #fef2f2;
    --success: #22c55e;
    --success-muted: #f0fdf4;
    --warning: #f59e0b;
    --warning-muted: #fffbeb;
    --danger: #ef4444;
    --danger-muted: #fef2f2;
    --info: #3b82f6;
    --info-muted: #eff6ff;
    --radius-md: 8px;
}

* {
    box-sizing: border-box;
}

body.panel-body {
    min-height: 100vh;
    margin: 0;
    background: linear-gradient(180deg, #ffffff 0%, #fafafa 100%);
    color: var(--foreground);
    font-family:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        'Segoe UI',
        sans-serif;
    font-size: 14px;
    line-height: 1.5;
}

.panel-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    height: 56px;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--card);
    padding: 0 24px;
}

.panel-brand,
.panel-user,
.panel-layout,
.panel-nav,
.panel-actions,
.panel-row-actions {
    display: flex;
}

.panel-brand {
    align-items: center;
    gap: 10px;
    color: inherit;
    text-decoration: none;
}

.panel-brand__logo {
    width: 20px;
    height: 25px;
}

.panel-brand__name {
    color: var(--primary);
    font-weight: 700;
    letter-spacing: 2px;
}

.panel-brand__product,
.panel-muted {
    color: var(--muted-foreground);
}

.panel-user {
    align-items: center;
    gap: 12px;
}

.panel-layout {
    min-height: calc(100vh - 56px);
}

.panel-sidebar {
    width: 240px;
    flex: 0 0 240px;
    border-right: 1px solid var(--border);
    background: #fafafa;
    padding: 16px 12px;
}

.panel-nav {
    flex-direction: column;
    gap: 4px;
}

.panel-nav__link {
    border-radius: var(--radius-md);
    color: var(--muted-foreground);
    padding: 10px 12px;
    text-decoration: none;
}

.panel-nav__link:hover,
.panel-nav__link--active {
    background: var(--primary-muted);
    color: var(--primary);
}

.panel-main {
    min-width: 0;
    flex: 1;
    padding: 24px;
}

.panel-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
}

.panel-title {
    margin: 0;
    font-size: 28px;
    font-weight: 650;
    line-height: 1.2;
}

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

.panel-section-stack {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.panel-button {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    padding: 8px 14px;
    font-weight: 500;
    text-decoration: none;
}

.panel-button--primary {
    background: var(--primary);
    color: #ffffff;
}

.panel-button--primary:hover {
    background: var(--primary-hover);
}

.panel-button--ghost {
    background: transparent;
    color: var(--foreground);
}

.panel-button--ghost:hover {
    background: var(--muted);
}

.panel-button--danger {
    background: var(--danger);
    color: #ffffff;
}

.panel-button--warning {
    background: var(--warning);
    color: #ffffff;
}

.panel-button--icon {
    min-height: 32px;
    width: 32px;
    padding: 6px;
}

.panel-button:disabled {
    cursor: not-allowed;
    opacity: 0.45;
}

.panel-table-shell {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--card);
}

.panel-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.panel-table th,
.panel-table td {
    border-bottom: 1px solid var(--border);
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
}

.panel-table thead th {
    background: var(--muted);
    color: var(--muted-foreground);
    font-weight: 600;
}

.panel-table tr:last-child td {
    border-bottom: 0;
}

.panel-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: 500;
}

.panel-badge--success {
    background: var(--success-muted);
    color: var(--success);
}

.panel-badge--warning {
    background: var(--warning-muted);
    color: var(--warning);
}

.panel-badge--danger {
    background: var(--danger-muted);
    color: var(--danger);
}

.panel-badge--neutral {
    background: var(--muted);
    color: var(--muted-foreground);
}

.panel-text-success {
    color: var(--success);
}

.panel-text-warning {
    color: var(--warning);
}

.panel-text-danger {
    color: var(--danger);
}

.panel-form-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.panel-input,
.panel-select {
    min-height: 40px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    background: #ffffff;
    color: var(--foreground);
    padding: 8px 12px;
}

.panel-input:focus,
.panel-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
    outline: 0;
}

.panel-log-output {
    max-height: calc(100vh - 14rem);
    overflow-y: auto;
    border-radius: var(--radius-md);
    background: #0a0a0b;
    color: #f4f4f5;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 13px;
    line-height: 1.45;
    padding: 12px;
    white-space: pre-wrap;
    word-break: break-all;
}

@media (max-width: 768px) {
    .panel-layout {
        flex-direction: column;
    }

    .panel-sidebar {
        width: 100%;
        flex-basis: auto;
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }

    .panel-nav {
        flex-direction: row;
        overflow-x: auto;
    }

    .panel-main {
        padding: 16px;
    }

    .panel-page-header {
        flex-direction: column;
    }
}