:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg: #f8fafc;
    --sidebar-bg: #1e293b;
    --sidebar-text: #e2e8f0;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --text: #334155;
    --text-muted: #94a3b8;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

/* Layout */
.page {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 1rem;
    flex-shrink: 0;
}

.sidebar .brand h2 {
    font-size: 1.5rem;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 1rem;
}

.nav-menu ul {
    list-style: none;
}

.nav-menu li {
    margin-bottom: 0.5rem;
}

.nav-menu a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: background 0.2s;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: rgba(255,255,255,0.1);
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.top-bar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
}

.top-bar form {
    display: inline;
}

.content {
    padding: 2rem;
    flex: 1;
}

/* Page header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    color: var(--text);
    text-decoration: none;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.btn:hover {
    background: var(--bg);
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

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

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    padding: 0;
}

/* Server grid */
.server-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.server-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.server-card.disabled {
    opacity: 0.6;
}

.server-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.server-header h3 {
    font-size: 1.125rem;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.online {
    background: #dcfce7;
    color: #166534;
}

.status-badge.offline {
    background: #fee2e2;
    color: #991b1b;
}

.status-badge.disabled {
    background: #e2e8f0;
    color: #64748b;
}

.server-info {
    margin-bottom: 1rem;
}

.server-info p {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.last-backup {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.last-backup.success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
}

.last-backup.failed {
    background: #fef2f2;
    border: 1px solid #fecaca;
}

.last-backup.running {
    background: #fefce8;
    border: 1px solid #fef08a;
}

.last-backup.none {
    background: var(--bg);
}

.server-actions {
    display: flex;
    gap: 0.5rem;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.data-table th,
.data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: var(--bg);
    font-weight: 600;
    font-size: 0.875rem;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr.disabled {
    opacity: 0.6;
}

.data-table tr.success {
    background: #f0fdf4;
}

.data-table tr.failed {
    background: #fef2f2;
}

/* Forms */
.edit-form {
    max-width: 800px;
}

fieldset {
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    background: var(--card-bg);
}

legend {
    padding: 0 0.5rem;
    font-weight: 600;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    font-size: 0.875rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-muted);
    font-size: 0.75rem;
}

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

.form-actions {
    display: flex;
    gap: 0.5rem;
    padding-top: 1rem;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: normal !important;
    cursor: pointer;
}

.radio-label input[type="radio"] {
    width: auto;
    margin: 0;
    cursor: pointer;
}

.form-select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    font-size: 0.875rem;
    background: var(--card-bg);
    cursor: pointer;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input:disabled,
.form-group textarea:disabled {
    background: var(--bg);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Details */
.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.details-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.5rem;
}

.details-section h3 {
    margin-bottom: 1rem;
    font-size: 1rem;
}

.details-section dl {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem;
}

.details-section dt {
    font-weight: 500;
    color: var(--text-muted);
}

/* Settings */
.settings-sections {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 600px;
}

.settings-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.5rem;
}

.settings-section h2 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.input-with-button {
    display: flex;
    gap: 0.5rem;
}

.input-with-button input {
    flex: 1;
}

.success-message {
    color: var(--success);
    margin-left: 1rem;
}

.error-message {
    color: var(--danger);
    margin-left: 1rem;
}

/* Login */
.empty-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-box {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.login-box h1 {
    text-align: center;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.login-box h2 {
    text-align: center;
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
}

.alert-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.text-muted {
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .page {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}