:root {
    --touch-target-min: 44px;
    --mobile-padding: 12px;
    --mobile-font-base: 16px;
    --bottom-sheet-max-height: 85vh;
    --color-primary: #4a90d9;
    --color-primary-dark: #3a7bc8;
    --color-header: #2c3e50;
    --color-admin-header: #1a252f;
    --color-success: #27ae60;
    --color-success-bg: #d4edda;
    --color-success-text: #155724;
    --color-success-border: #c3e6cb;
    --color-error: #e74c3c;
    --color-error-dark: #c0392b;
    --color-error-bg: #f8d7da;
    --color-error-text: #721c24;
    --color-error-border: #f5c6cb;
    --color-info-bg: #d1ecf1;
    --color-info-text: #0c5460;
    --color-info-border: #bee5eb;
    --color-warning: #f39c12;
    --color-warning-bg: #fff3cd;
    --color-warning-text: #856404;
    --color-warning-border: #ffc107;
    --color-text: #333;
    --color-text-muted: #888;
    --color-text-dark: #555;
    --color-bg: #f5f7fa;
    --color-bg-white: #fff;
    --color-bg-light: #f8f9fa;
    --color-bg-lighter: #fafafa;
    --color-border: #e8e8e8;
    --color-border-dark: #ddd;
    --color-border-darker: #dee2e6;
    --color-nav-link: #bdc3c7;
    --color-user-info: #95a5a6;
    --color-secondary: #95a5a6;
    --color-secondary-light: #adb5bd;
    --color-muted: #7f8c8d;
    --color-faint: #999;
    --color-table-header: #f8f9fa;
    --color-table-border: #eee;
    --color-table-hover: #f8f9fa;
    --color-disabled-bg: #f0f0f0;
    --color-disabled-slider: #e0e0e0;
    --color-badge-cname-bg: #e2d5f1;
    --color-badge-cname-text: #6c3483;
    --color-badge-ns-bg: #fdebd0;
    --color-badge-ns-text: #a04000;
    --color-badge-mx-bg: #fadbd8;
    --color-badge-mx-text: #922b21;
    --color-badge-txt-bg: #eaf2f3;
    --color-badge-txt-text: #1a5276;
    --color-badge-ptr-bg: #d5f5e3;
    --color-badge-ptr-text: #1e8449;
    --color-badge-srv-bg: #f9e79f;
    --color-badge-srv-text: #7d6608;
    --color-badge-soa-bg: #d6dbdf;
    --color-badge-inactive-bg: #eee;
    --color-auth-bg: #e8ecf1;
    --color-tab-inactive: #6c757d;
    --color-code-bg: #1e1e1e;
    --color-code-text: #f8f8f2;
    --color-card-bg: #fff;
    --color-traffic-healthy: #22c55e;
    --color-traffic-unhealthy: #ef4444;
    --color-traffic-unknown: #9ca3af;
    --color-lb-badge-bg: #f0e6ff;
    --color-policy-checked-bg: #f0f7fc;
    --color-faq-hover: #eef1f5;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    --radius-sm: 3px;
    --radius: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-pill: 12px;
    --radius-round: 24px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-header: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-auth: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: 0.2s ease;
    --transition-fast: 0.15s;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --gradient-hero: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    --rgba-white-10: rgba(255, 255, 255, 0.1);
    --rgba-white-15: rgba(255, 255, 255, 0.15);
    --rgba-white-30: rgba(255, 255, 255, 0.3);
    --rgba-white-40: rgba(255, 255, 255, 0.4);
    --rgba-primary-15: rgba(74, 144, 217, 0.15);
}

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

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a:hover {
    text-decoration: underline;
}

h2 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--color-header);
}

h3 {
    margin-bottom: 12px;
    font-size: 1.1rem;
    color: #34495e;
}

/* Nav — shared between user and admin */
.nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-links a {
    color: var(--color-nav-link);
    font-size: 0.9rem;
    transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-bg-white);
    text-decoration: none;
}

.user-info {
    color: var(--color-user-info);
    font-size: 0.85rem;
}

.logout-form {
    display: inline;
}

.btn-logout {
    color: var(--color-error) !important;
    font-size: 0.85rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    font: inherit;
}

.btn-logout:hover {
    color: var(--color-error-dark) !important;
    text-decoration: underline;
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-bg-white);
    border-radius: 1px;
    transition: transform var(--transition), opacity var(--transition);
}

/* Cards */
.card {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.page-header {
    margin-bottom: 20px;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.alert-success {
    background: var(--color-success-bg);
    color: var(--color-success-text);
    border: 1px solid var(--color-success-border);
}

.alert-error {
    background: var(--color-error-bg);
    color: var(--color-error-text);
    border: 1px solid var(--color-error-border);
}

.alert-info {
    background: var(--color-info-bg);
    color: var(--color-info-text);
    border: 1px solid var(--color-info-border);
}

/* Toast notifications */
.toast-container {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
    max-width: 380px;
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    padding-right: 32px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    line-height: 1.4;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    pointer-events: auto;
    position: relative;
    overflow: hidden;
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.35s ease, opacity 0.35s ease;
}

.toast-enter {
    transform: translateX(0);
    opacity: 1;
}

.toast-exit {
    transform: translateX(120%);
    opacity: 0;
}

.toast-success {
    background: var(--color-success-bg);
    color: var(--color-success-text);
    border-left: 4px solid var(--color-success);
}

.toast-error {
    background: var(--color-error-bg);
    color: var(--color-error-text);
    border-left: 4px solid var(--color-error);
}

.toast-info {
    background: var(--color-info-bg);
    color: var(--color-info-text);
    border-left: 4px solid var(--color-info-border);
}

.toast-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning-text);
    border-left: 4px solid var(--color-warning);
}

.toast-icon {
    flex-shrink: 0;
    width: 20px;
    text-align: center;
    font-weight: 700;
    line-height: 1;
}

.toast-content {
    flex: 1;
    min-width: 0;
}

.toast-close {
    position: absolute;
    top: 8px;
    right: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    color: inherit;
    opacity: 0.5;
    padding: 4px;
    transition: opacity var(--transition);
}

.toast-close:hover {
    opacity: 1;
}

.toast-close:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 1px;
    border-radius: 2px;
}

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: currentColor;
    opacity: 0.25;
    border-radius: 0 0 0 var(--radius);
    width: 100%;
    transform-origin: left;
    animation: toast-progress-shrink var(--duration, 5000ms) linear forwards;
}

@keyframes toast-progress-shrink {
    from { transform: scaleX(1); }
    to { transform: scaleX(0); }
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
    padding: 8px 0;
    margin-bottom: 8px;
    font-size: 0.85rem;
}

.breadcrumbs a {
    color: var(--color-primary);
    text-decoration: none;
}

.breadcrumbs a:hover {
    text-decoration: underline;
}

.breadcrumbs span[aria-current="page"] {
    color: var(--color-text-muted);
}

.breadcrumb-separator {
    color: var(--color-text-muted);
    user-select: none;
}

/* Forms */
form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: -4px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
    padding: 8px 12px;
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    width: 100%;
    max-width: 400px;
    transition: border-color var(--transition);
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--rgba-primary-15);
}

.form-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.form-group {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 180px;
}

.form-group input,
.form-group select {
    max-width: 100%;
}

.field-grouped {
    opacity: 0.4;
    background: var(--color-disabled-bg);
    pointer-events: none;
}

.field-disabled {
    opacity: 0.4;
}
.field-disabled input,
.field-disabled select {
    background: var(--color-disabled-bg);
    color: var(--color-text-muted);
}

.help {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.help-text {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.field-error {
    color: var(--color-error);
    font-size: 0.85rem;
    display: block;
    margin-top: 2px;
}

/* Buttons */
button,
.btn-primary,
.btn-secondary,
.btn-danger,
.btn-small {
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    border: none;
    border-radius: var(--radius);
    padding: 8px 16px;
    align-self: flex-start;
    transition: background var(--transition), opacity var(--transition);
}

button:hover,
.btn-primary:hover,
.btn-secondary:hover,
.btn-danger:hover,
.btn-small:hover {
    opacity: 0.85;
    text-decoration: none;
}

.btn-primary {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-bg-white);
}

.btn-secondary {
    display: inline-block;
    background: var(--color-secondary);
    color: var(--color-bg-white);
}

.btn-danger {
    display: inline-block;
    background: var(--color-error);
    color: var(--color-bg-white);
}

.btn-small {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-bg-white);
    padding: 6px 14px;
    font-size: 0.85rem;
}

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

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 8px;
}

thead th {
    text-align: left;
    padding: 10px 12px;
    background: var(--color-table-header);
    border-bottom: 2px solid var(--color-border-darker);
    font-size: 0.85rem;
    color: var(--color-text-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-table-border);
    font-size: 0.9rem;
    vertical-align: middle;
}

tbody tr:hover {
    background: var(--color-table-hover);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-a { background: var(--color-info-bg); color: var(--color-info-text); }
.badge-aaaa { background: var(--color-success-bg); color: var(--color-success-text); }
.badge-cname { background: var(--color-badge-cname-bg); color: var(--color-badge-cname-text); }
.badge-ns { background: var(--color-badge-ns-bg); color: var(--color-badge-ns-text); }
.badge-mx { background: var(--color-badge-mx-bg); color: var(--color-badge-mx-text); }
.badge-txt { background: var(--color-badge-txt-bg); color: var(--color-badge-txt-text); }
.badge-ptr { background: var(--color-badge-ptr-bg); color: var(--color-badge-ptr-text); }
.badge-srv { background: var(--color-badge-srv-bg); color: var(--color-badge-srv-text); }
.badge-soa { background: var(--color-badge-soa-bg); color: var(--color-header); }
.badge-? { background: var(--color-table-border); color: #666; }
.badge-success { background: var(--color-success-bg); color: var(--color-success-text); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning-text); }
.badge-danger { background: var(--color-error-bg); color: var(--color-error-text); }

/* Record enabled/disabled badges */
.badge-active {
    background: var(--color-success-bg);
    color: var(--color-success-text);
}

.badge-inactive {
    background: var(--color-badge-inactive-bg);
    color: var(--color-text-muted);
}

/* Disabled record row */
.row-disabled {
    opacity: 0.5;
    background: var(--color-bg-lighter);
}

.row-disabled:hover {
    background: var(--color-disabled-bg);
}

/* Warning button */
.btn-warning {
    display: inline-block;
    background: var(--color-warning);
    color: var(--color-bg-white);
}

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

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--color-muted);
}
.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.4;
    line-height: 1;
}
.empty-state h3 {
    color: var(--color-text);
    margin: 0 0 0.5rem;
    font-size: 1.15rem;
}
.empty-state p {
    margin: 0 0 1rem;
    font-size: 0.95rem;
}
.empty-state .btn-primary {
    margin-top: 0.5rem;
}

.info-text {
    color: var(--color-muted);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

/* Table wrapper for horizontal scroll */
.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Card header */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 12px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.card-header h3 {
    margin: 0;
}

/* Language Switcher */
.lang-switch {
    color: var(--color-secondary-light);
    font-size: 0.85rem;
    font-weight: 600;
    margin-left: 8px;
    padding: 2px 6px;
    border-radius: 3px;
    transition: color var(--transition), background var(--transition);
}

.lang-switch:hover {
    color: var(--color-bg-white);
    background: var(--rgba-white-10);
    text-decoration: none;
}

.lang-switch-container {
    margin-top: 20px;
    text-align: center;
}

.lang-switch-container a {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
}

.lang-switch-dual {
    display: flex;
    align-items: center;
    gap: 3px;
    margin-left: 6px;
    font-size: 0.7rem;
}

.lang-switch-dual a {
    color: var(--color-secondary-light);
    text-decoration: none;
    font-weight: 400;
    opacity: 0.5;
    transition: opacity var(--transition);
}

.lang-switch-dual a:hover {
    opacity: 0.8;
}

.lang-switch-dual a.active {
    opacity: 1;
}

.lang-switch-separator {
    color: var(--color-secondary-light);
    opacity: 0.4;
    font-size: 0.65rem;
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--color-border-darker);
    margin-bottom: 20px;
    gap: 0;
}

.tab-link {
    display: inline-block;
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-tab-inactive);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color var(--transition), border-color var(--transition);
    cursor: pointer;
}

.tab-link:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.tab-link.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Address group management */
.ag-address-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ag-address-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 4px;
}

.ag-address-item input[type="text"] {
    flex: 1;
    min-width: 0;
}

.ag-address-item .sort-input {
    width: 50px;
    text-align: center;
}

.ag-address-item .btn-remove {
    background: var(--color-error);
    color: var(--color-bg-white);
    border: none;
    padding: 4px 8px;
    border-radius: var(--radius);
    cursor: pointer;
}

.ag-address-item .btn-remove:hover {
    background: var(--color-error-dark);
}

/* Health monitoring */
.health-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
}

.health-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.health-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #ccc;
    border-radius: var(--radius-round);
    transition: background var(--transition);
}

.health-slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: var(--color-bg-white);
    border-radius: 50%;
    transition: transform var(--transition);
}

.health-switch input:checked + .health-slider {
    background: var(--color-success);
}

.health-switch input:checked + .health-slider::before {
    transform: translateX(20px);
}

.health-switch input:disabled + .health-slider {
    background: var(--color-disabled-slider);
    cursor: not-allowed;
    opacity: 0.5;
}

.health-switch input:disabled:checked + .health-slider {
    background: var(--color-secondary);
}

.health-probe-config {
    margin-top: 12px;
    padding: 12px;
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.health-status-table td {
    vertical-align: middle;
}

.health-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
}

.lb-policy-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--color-lb-badge-bg);
    color: var(--color-badge-cname-text);
    margin-left: 4px;
    vertical-align: middle;
}

.health-indicator.healthy {
    background: var(--color-success);
}

.health-indicator.unhealthy {
    background: var(--color-error);
}

.health-indicator.unknown {
    background: var(--color-nav-link);
}

.live-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-nav-link);
    margin-left: 12px;
    vertical-align: middle;
}

.live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-success);
    animation: live-pulse 2s ease-in-out infinite;
}

@keyframes live-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.live-time {
    font-variant-numeric: tabular-nums;
}

.health-section {
    margin-top: 24px;
}

/* --- LB Settings --- */

.policy-radio-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 12px;
}

.policy-radio-item {
    display: flex;
    flex-direction: column;
    padding: 10px 10px;
    border: 1px solid #e0e0e0;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.policy-radio-item:hover {
    border-color: #3498db;
}

.policy-radio-item input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.policy-radio-label {
    font-weight: 600;
    font-size: 14px;
}

.policy-radio-desc {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.policy-radio-item:has(input:checked) {
    border-color: #3498db;
    background: var(--color-policy-checked-bg);
    box-shadow: inset 4px 0 0 #3498db;
}

.alert-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning-text);
    border: 1px solid var(--color-warning-border);
    border-radius: var(--radius);
    padding: 8px 12px;
    font-size: 13px;
}

/* --- Members policy table --- */

.members-policy-table .weight-col {
    width: 100px;
}

.members-policy-table .role-col {
    width: 150px;
}

.members-policy-table .status-col {
    width: 130px;
}

.members-policy-table .actions-cell {
    width: 50px;
}

.members-policy-table .hidden-col {
    display: none;
}

.member-weight {
    width: 70px;
    padding: 4px 6px;
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius);
    font-size: 13px;
}

.member-role {
    padding: 4px 6px;
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius);
    font-size: 13px;
    background: var(--color-bg-white);
}

/* --- Traffic bar --- */

.traffic-bar {
    display: flex;
    height: 24px;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--color-disabled-bg);
}

.traffic-segment {
    height: 100%;
    min-width: 2px;
    transition: opacity var(--transition-fast);
}

.traffic-segment:hover {
    opacity: 0.8;
}

.traffic-segment.healthy {
    background: var(--color-traffic-healthy);
}

.traffic-segment.unhealthy {
    background: var(--color-traffic-unhealthy);
}

.traffic-segment.unknown {
    background: var(--color-traffic-unknown);
}

/* --- Overview --- */

.overview-status-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-table-border);
}

.status-item {
    display: flex;
    flex-direction: column;
}

.status-label {
    font-size: 11px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.overview-stats {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
}

.stat-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text);
}

.stat-label {
    font-size: 11px;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

/* --- Failover events --- */

.failover-events-table {
    width: 100%;
    font-size: 13px;
}

.failover-events-table td,
.failover-events-table th {
    padding: 6px 8px;
}

.health-text {
    font-size: 13px;
}

.alert-error pre {
    margin: 8px 0 0;
    font-size: 12px;
    background: var(--color-code-bg);
    color: var(--color-code-text);
    padding: 10px;
    border-radius: var(--radius);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* ==================== Modal Dialog ==================== */

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-overlay.active {
    display: flex;
}

.modal-dialog {
    background: var(--color-bg-white);
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    max-width: 440px;
    width: 90%;
    padding: 24px;
}

.modal-dialog h2 {
    margin: 0 0 12px;
    font-size: 1.2rem;
    color: var(--color-text);
}

.modal-dialog p {
    margin: 0 0 20px;
    color: var(--color-text-dark);
    line-height: 1.5;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.modal-actions .btn-small {
    min-width: 80px;
    text-align: center;
}

/* ==================== Labels ==================== */

.labels-section {
    margin-top: 1.5rem;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

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

.labels-section .help-text {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.label-pair {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.5rem;
}

.label-pair input {
    flex: 1;
    min-width: 0;
}

.label-pair .btn-icon-remove {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--color-error);
    color: var(--color-bg-white);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.75rem;
}

.label-pair .btn-icon-remove:hover {
    opacity: 0.85;
}

.empty-hint {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    padding: 1rem 0;
}

/* Label Badge (dashboard) */
.zone-labels {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin: 0.5rem 0;
}

.label-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem 0.5rem;
    background: var(--color-bg-secondary, var(--color-bg-light));
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

.label-badge .label-value {
    color: var(--color-text);
    font-weight: 500;
}

/* Dashboard toolbar: button row + filter row */
.dashboard-toolbar {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1rem;
}

.dashboard-toolbar .label-filter {
    display: inline-flex;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 0.375rem;
    align-items: center;
    margin-bottom: 0;
    margin-left: auto;
}

.label-filter select {
    padding: 2px 4px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg-white);
    font-size: 0.75rem;
    line-height: 1.4;
    min-width: 0;
    width: 120px;
}

.label-filter .btn-text {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.75rem;
    padding: 2px 4px;
}

.label-filter .btn-text:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

/* RFC quotes */
.rfc-quote-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.rfc-quote-card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    transition: box-shadow var(--transition);
}

.rfc-quote-card:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.rfc-quote-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
}

.rfc-quote-card blockquote {
    margin: 0;
    font-style: italic;
    color: var(--color-text-dark);
    line-height: 1.55;
    font-size: 0.92rem;
}

.rfc-quote-card cite {
    display: block;
    font-style: normal;
    font-size: 0.78rem;
    color: var(--color-muted);
    margin-top: auto;
}

/* ==================== Mobile Foundation ==================== */

/* Touch optimization — all interactive elements */
button, .btn-primary, .btn-secondary, .btn-danger, .btn-small, .btn-action, .btn-logout, a {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

/* ==================== Mobile utilities ==================== */
.mobile-card-view {
    /* Applied to table wrappers on mobile */
}

.mobile-hidden {
    display: none !important;
}

.mobile-bottom-sheet-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    justify-content: flex-end;
    align-items: stretch;
}

.mobile-bottom-sheet-overlay.active {
    display: flex;
}

.mobile-bottom-sheet {
    background: var(--color-bg-white);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: 20px 16px;
    max-height: var(--bottom-sheet-max-height);
    overflow-y: auto;
    width: 100%;
    animation: bottom-sheet-slide-in 0.3s ease;
}

@keyframes bottom-sheet-slide-in {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.mobile-bottom-sheet-handle {
    width: 40px;
    height: 4px;
    background: var(--color-border-dark);
    border-radius: 2px;
    margin: 0 auto 16px;
}

.mobile-bottom-sheet h2 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--color-header);
}

/* ==================== Responsive ==================== */

@media (max-width: 1024px) {
}

@media (max-width: 768px) {
    .nav-hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        padding: 12px 0;
        gap: 0;
        border-top: 1px solid var(--rgba-white-10);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a,
    .nav-links .user-info,
    .nav-links .logout-form {
        padding: 8px 0;
        width: 100%;
        text-align: center;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .form-group {
        min-width: 100%;
        margin-bottom: 1rem;
    }

    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="number"],
    select {
        max-width: 100%;
    }

    table {
        font-size: 0.8rem;
    }

    thead th, tbody td {
        padding: 6px 8px;
    }

    /* Card view */
    .zones-table thead,
    .records-table thead,
    .members-policy-table thead,
    .health-status-table thead {
        display: none;
    }

    .zones-table tbody tr,
    .records-table tbody tr,
    .members-policy-table tbody tr,
    .health-status-table tbody tr {
        display: block;
        background: var(--color-bg-white);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        padding: 12px;
        margin-bottom: 8px;
        box-shadow: var(--shadow);
    }

    .zones-table tbody tr:hover,
    .records-table tbody tr:hover,
    .members-policy-table tbody tr:hover,
    .health-status-table tbody tr:hover {
        background: var(--color-bg-white);
    }

    .zones-table td,
    .records-table td,
    .members-policy-table td,
    .health-status-table td {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        padding: 6px 0;
        border-bottom: 1px solid var(--color-bg-light);
        text-align: right;
        font-size: 0.9rem;
    }

    .zones-table td:last-child,
    .records-table td:last-child,
    .members-policy-table td:last-child,
    .health-status-table td:last-child {
        border-bottom: none;
    }

    .zones-table td[data-label]::before,
    .records-table td[data-label]::before,
    .members-policy-table td[data-label]::before,
    .health-status-table td[data-label]::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--color-text-dark);
        text-align: left;
        margin-right: 12px;
        flex-shrink: 0;
    }

    .zones-table .actions-cell,
    .records-table .actions-cell {
        display: flex;
        flex-direction: column;
        gap: 4px;
        align-items: stretch;
    }

    .zones-table .actions-cell form,
    .records-table .actions-cell form {
        display: block !important;
    }

    .zones-table .actions-cell .btn-small,
    .records-table .actions-cell .btn-small {
        display: block;
        width: 100%;
        text-align: center;
    }

    .records-table .txt-data-expanded {
        word-break: break-all;
        white-space: pre-wrap;
        text-align: left;
    }

    .records-table .btn-expand {
        min-height: var(--touch-target-min);
        padding: 12px 16px;
        width: 100%;
        text-align: center;
        margin-top: 4px;
    }

    /* Touch targets */
    .btn-small {
        min-height: var(--touch-target-min);
        padding: 12px 16px;
        font-size: 0.9rem;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .btn-action {
        min-width: var(--touch-target-min);
        min-height: var(--touch-target-min);
        padding: 12px 16px;
        font-size: 0.9rem;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .admin-actions {
        flex-direction: column;
        gap: 4px;
    }

    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="number"],
    select,
    textarea {
        min-height: var(--touch-target-min);
        font-size: var(--mobile-font-base);
        padding: 12px;
    }

    #record_data {
        font-size: 0.8rem;
        min-height: 60px;
    }

    ::-webkit-input-placeholder {
        opacity: 1;
    }
    :-moz-placeholder {
        opacity: 1;
    }
    ::-moz-placeholder {
        opacity: 1;
    }
    :-ms-input-placeholder {
        opacity: 1;
    }

    .nav-hamburger {
        width: var(--touch-target-min);
        height: var(--touch-target-min);
    }

    /* Nav overlay */
    .nav-links.open,
    .public-nav.open {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        display: flex !important;
        flex-direction: column;
        justify-content: flex-start;
        padding: 60px 16px 16px;
        gap: 0;
        border-top: none;
    }

    .nav-links.open a,
    .public-nav.open a {
        padding: 14px 16px;
        background: var(--color-bg-white);
        color: var(--color-text);
        border-radius: var(--radius);
        margin-bottom: 4px;
    }

    .nav-links.open a.active,
    .public-nav.open a.active {
        color: var(--color-primary);
        font-weight: 600;
    }

    .nav-links.open .user-info,
    .public-nav.open .user-info {
        padding: 14px 16px;
        background: var(--color-bg-white);
        color: var(--color-text-dark);
        border-radius: var(--radius);
        margin-bottom: 4px;
    }

    .nav-links.open .logout-form,
    .public-nav.open .logout-form {
        padding: 0;
        background: none;
        margin-bottom: 4px;
    }

    .nav-links.open .logout-form .btn-logout,
    .public-nav.open .logout-form .btn-logout {
        display: block;
        width: 100%;
        padding: 14px 16px;
        background: var(--color-bg-white);
        color: var(--color-error);
        border-radius: var(--radius);
        text-align: center;
        min-height: var(--touch-target-min);
    }

    .nav-links.open .lang-switch-dual,
    .public-nav.open .lang-switch-dual {
        padding: 14px 16px;
        background: var(--color-bg-white);
        border-radius: var(--radius);
        margin-bottom: 4px;
    }

    .nav-links.open .lang-switch-dual a,
    .public-nav.open .lang-switch-dual a {
        color: var(--color-text-muted);
        opacity: 0.6;
    }

    .nav-links.open .lang-switch-dual a.active,
    .public-nav.open .lang-switch-dual a.active {
        color: var(--color-primary);
        opacity: 1;
        font-weight: 600;
    }

    .nav-links.open .nav-separator,
    .public-nav.open .nav-separator,
    .nav-links.open .lang-switch-separator,
    .public-nav.open .lang-switch-separator {
        display: none;
    }

    .nav-links .lang-switch-dual,
    .public-nav .lang-switch-dual {
        padding: 8px 0;
    }

    /* Toast — bottom center on mobile */
    .toast-container {
        top: auto;
        bottom: 8px;
        right: 50%;
        transform: translateX(50%);
        left: auto;
        max-width: calc(100% - 16px);
    }

    .toast {
        transform: translateY(120%);
    }

    .toast-enter {
        transform: translateY(0);
    }

    .toast-exit {
        transform: translateY(120%);
    }

    /* FAQ touch targets */
    .faq-question {
        min-height: var(--touch-target-min);
        padding: 14px 20px;
    }

    /* Auth touch targets */
    .auth-container .btn-primary {
        min-height: var(--touch-target-min);
        padding: 12px 16px;
    }

    .auth-container input[type="email"],
    .auth-container input[type="password"],
    .auth-container input[type="text"] {
        min-height: var(--touch-target-min);
        font-size: var(--mobile-font-base);
    }

    .auth-container input[type="checkbox"] {
        width: 20px;
        height: 20px;
    }

    /* Tabs — horizontal scroll */
    .tabs {
        flex-direction: row;
        border-bottom: 2px solid var(--color-border-darker);
        gap: 0;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .tabs::-webkit-scrollbar {
        display: none;
    }

    .tab-link {
        border-bottom: 2px solid transparent;
        border-left: none;
        padding: 10px 16px;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .tab-link.active {
        border-bottom-color: var(--color-primary);
        border-left-color: transparent;
    }

    /* Label pair — larger remove button */
    .label-pair .btn-icon-remove {
        width: var(--touch-target-min);
        height: var(--touch-target-min);
        font-size: 1rem;
    }

    /* Labels section add button */
    .labels-section .btn-secondary {
        min-height: var(--touch-target-min);
        padding: 12px 16px;
        font-size: 0.9rem;
    }

    /* Records table action buttons */
    .records-table .btn-small {
        min-height: var(--touch-target-min);
        padding: 12px 16px;
        font-size: 0.9rem;
    }

    /* Policy radio — larger touch */
    .policy-radio-item {
        min-height: var(--touch-target-min);
        padding: 14px 12px;
    }

    /* Health switch — larger */
    .health-switch {
        width: 56px;
        height: 30px;
    }

    .health-slider::before {
        height: 24px;
        width: 24px;
        left: 3px;
        bottom: 3px;
    }

    .health-switch input:checked + .health-slider::before {
        transform: translateX(26px);
    }

    /* Member weight/role inputs */
    .member-weight,
    .member-role {
        min-height: var(--touch-target-min);
        font-size: var(--mobile-font-base);
        padding: 10px 8px;
    }

    .member-role {
        min-width: 190px;
    }

    /* Address group remove button */
    .ag-address-item .btn-remove {
        min-width: var(--touch-target-min);
        min-height: var(--touch-target-min);
        padding: 12px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* Filter form touch targets */
    .filter-form select {
        min-height: var(--touch-target-min);
        font-size: var(--mobile-font-base);
    }

    /* Pagination */
    .pagination {
        display: flex;
        flex-wrap: wrap;
        gap: 4px;
        justify-content: center;
        margin-top: 16px;
    }

    .pagination .btn-small {
        min-width: var(--touch-target-min);
        min-height: var(--touch-target-min);
        padding: 12px;
    }

    /* API Docs sidebar overlay */
    .api-docs-sidebar.open ~ .api-docs-content::before {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 998;
    }

    .api-docs-sidebar-toggle {
        min-width: var(--touch-target-min);
        min-height: var(--touch-target-min);
        padding: 12px 12px 12px 0;
    }

    /* CTA buttons stacked */
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }

    .cta-buttons a {
        width: 100%;
        max-width: 260px;
        text-align: center;
        min-height: var(--touch-target-min);
    }

    /* Steps compact */
    .step-item {
        padding: 14px 0;
    }

    .step-number {
        width: 36px;
        height: 36px;
        min-width: 36px;
    }

    /* Bottom sheet mobile utilities */
    .mobile-show {
        display: block !important;
    }

    .mobile-truncate {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 100%;
    }

    /* Confirm modal as bottom sheet on mobile */
    .modal-overlay.active {
        align-items: flex-end;
    }

    .modal-dialog {
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        max-width: 100%;
        width: 100%;
        padding: 20px 16px;
        animation: bottom-sheet-slide-in 0.3s ease;
    }

    .modal-actions .btn-small {
        min-height: var(--touch-target-min);
        padding: 14px 16px;
        font-size: 1rem;
    }
}

@media (min-width: 769px) {
    .mobile-show {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .toast-container {
        top: 8px;
        right: 8px;
        left: 8px;
        transform: none;
        max-width: none;
    }

    .toast {
        font-size: 0.85rem;
        padding: 10px 12px;
        padding-right: 28px;
    }

    .modal-dialog {
        padding: 16px;
    }

    .modal-actions {
        flex-direction: column;
    }

    .modal-actions .btn-small {
        width: 100%;
    }

    .records-table {
        font-size: 0.8rem;
    }

    .records-table th,
    .records-table td {
        padding: 4px 6px;
    }

    main, .admin-main {
        padding: 12px;
    }

    .card {
        padding: 16px;
    }

    .auth-container {
        margin: 8px;
        padding: 16px;
    }

    .overview-stats {
        gap: 12px;
    }

    .stat-item {
        min-width: 60px;
    }

    .stat-value {
        font-size: 18px;
    }

    .policy-radio-group {
        gap: 8px;
    }

    .error-page .error-code {
        font-size: 4rem;
    }

    .error-page .error-content {
        padding: 24px;
    }

    .step-item {
        gap: 12px;
        padding: 12px 0;
    }

    .step-number {
        width: 30px;
        height: 30px;
        font-size: 0.85rem;
    }

    .btn-small {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: auto;
        margin: 2px 0;
        text-align: center;
    }

    .actions-cell .btn-small {
        width: 100%;
    }

    .tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
    }

    .tab-link {
        flex: none;
        text-align: left;
        padding: 10px 16px;
        font-size: 0.9rem;
        white-space: nowrap;
    }

    .ag-address-item {
        flex-wrap: nowrap;
    }

    .ag-address-item .sort-input {
        width: 50px;
    }
}

@media (max-width: 360px) {
    .hero-section {
        padding: 24px 8px;
    }

    .hero-section h1 {
        font-size: 1.1rem;
    }

    .auth-container {
        margin: 4px;
        padding: 12px;
    }

    .auth-container h1 {
        font-size: 1.2rem;
    }

    main, .admin-main {
        padding: 8px;
    }

    .card {
        padding: 12px;
    }

    .features-grid {
        padding: 0 8px;
    }

    .feature-card {
        padding: 12px;
    }

    .page-content {
        padding: 12px 8px;
    }

    .faq-accordion {
        padding: 12px 8px;
    }

    .rfc-quote-grid {
        gap: 8px;
    }

    .rfc-quote-card {
        padding: 10px;
    }

    .label-badge {
        font-size: 0.625rem;
        padding: 0.0625rem 0.25rem;
    }

    .tab-link {
        font-size: 0.75rem;
        padding: 0.4rem 0.2rem;
    }

    .modal-dialog {
        padding: 12px;
        width: 95%;
    }

    .toast {
        font-size: 0.8rem;
        padding: 8px 10px;
    }

    .toast-container {
        top: auto;
        bottom: 4px;
        right: 50%;
        left: auto;
        transform: translateX(50%);
    }

    .breadcrumbs {
        font-size: 0.75rem;
        padding: 6px 0;
    }

    .admin-actions {
        gap: 2px;
    }

    .btn-small {
        padding: 10px 12px;
        font-size: 0.8rem;
    }

    .zone-status-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .zone-status-bar-actions {
        flex-direction: column;
        width: 100%;
        gap: 4px;
    }

    .zone-status-bar-actions .btn-small {
        width: 100%;
    }

    .dashboard-toolbar {
        gap: 0.5rem;
    }

    .label-filter {
        flex-direction: column;
        align-items: stretch;
    }

    .label-filter select {
        width: 100%;
    }

    .filter-form {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .filter-form select {
        width: 100%;
    }

    .overview-stats {
        flex-direction: column;
        gap: 8px;
    }

    .stat-item {
        min-width: auto;
    }

    .traffic-bar {
        height: 16px;
    }

    .policy-radio-item {
        padding: 8px;
    }

    .health-toggle {
        gap: 4px;
    }

    .ag-address-item {
        padding: 6px 8px;
    }

    .members-policy-table .weight-col {
        width: 70px;
    }

    .members-policy-table .role-col {
        width: 120px;
    }

    .members-policy-table .status-col {
        width: 70px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}