:root {
            --background: #f3f5f8;
            --surface: #ffffff;
            --surface-soft: #f8fafc;
            --border: #dfe4ea;
            --text: #202936;
            --muted: #687483;

            --ok: #198754;
            --ok-soft: #e6f5ec;

            --alert: #dc3545;
            --alert-soft: #fdebed;

            --error: #fd7e14;
            --error-soft: #fff0e3;

            --info: #0d6efd;
            --info-soft: #e8f1ff;

            --shadow: 0 4px 14px rgba(31, 41, 55, 0.07);
        }

        * {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            background: var(--background);
            color: var(--text);
            font-family: Arial, Helvetica, sans-serif;
        }

        button,
        input {
            font: inherit;
        }

        .page {
            width: 100%;
            max-width: 1800px;
            margin: 0 auto;
            padding: 22px;
        }

        .topbar {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 20px;
            margin-bottom: 20px;
        }

        .title {
            margin: 0;
            font-size: 30px;
        }

        .subtitle {
            margin-top: 5px;
            color: var(--muted);
            font-size: 14px;
        }

        .navigation {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .navigation a {
            padding: 9px 13px;
            border: 1px solid var(--border);
            border-radius: 7px;
            background: var(--surface);
            color: var(--info);
            text-decoration: none;
            font-size: 13px;
        }

        .navigation a:hover {
            background: var(--surface-soft);
        }

        .incident-count {
            display: inline-block;
            min-width: 19px;
            margin-left: 5px;
            padding: 2px 6px;
            border-radius: 999px;
            color: #ffffff;
            background: var(--alert);
            font-size: 11px;
            font-weight: bold;
            text-align: center;
        }

        .summary-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 14px;
            margin-bottom: 14px;
        }

        .summary-grid-secondary {
            margin-bottom: 24px;
        }

        .summary-card {
            min-height: 122px;
            padding: 17px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            box-shadow: var(--shadow);
        }

        .summary-label {
            color: var(--muted);
            font-size: 12px;
            font-weight: bold;
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }

        .summary-value {
            margin-top: 10px;
            font-size: 28px;
            font-weight: bold;
        }

        .summary-detail {
            margin-top: 7px;
            color: var(--muted);
            font-size: 13px;
        }

        .summary-card.ok {
            border-top: 4px solid var(--ok);
        }

        .summary-card.alert {
            border-top: 4px solid var(--alert);
        }

        .summary-card.error {
            border-top: 4px solid var(--error);
        }

        .status-text {
            font-weight: bold;
        }

        .status-text.ok {
            color: var(--ok);
        }

        .status-text.alert {
            color: var(--alert);
        }

        .status-text.error {
            color: var(--error);
        }

        .section-title {
            margin: 26px 0 12px;
            font-size: 20px;
        }

        .toolbar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 16px;
            padding: 13px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            box-shadow: var(--shadow);
        }

        .search-box {
            flex: 1 1 280px;
            min-width: 220px;
            padding: 10px 12px;
            border: 1px solid var(--border);
            border-radius: 7px;
            background: var(--surface);
            color: var(--text);
            outline: none;
        }

        .search-box:focus {
            border-color: var(--info);
            box-shadow: 0 0 0 3px var(--info-soft);
        }

        .filter-group {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        .filter-button,
        .action-button {
            padding: 9px 12px;
            border: 1px solid var(--border);
            border-radius: 7px;
            background: var(--surface);
            color: var(--text);
            cursor: pointer;
        }

        .filter-button:hover,
        .action-button:hover {
            background: var(--surface-soft);
        }

        .filter-button.active {
            border-color: var(--info);
            background: var(--info-soft);
            color: var(--info);
            font-weight: bold;
        }

        .issues-toggle {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 8px 10px;
            border-radius: 7px;
            background: var(--surface-soft);
            color: var(--text);
            font-size: 13px;
            cursor: pointer;
        }

        .issues-toggle input {
            width: 17px;
            height: 17px;
            cursor: pointer;
        }

        .visible-counter {
            margin-left: auto;
            color: var(--muted);
            font-size: 13px;
            white-space: nowrap;
        }

        .url-grid {
            display: grid;
            grid-template-columns:
                repeat(auto-fit, minmax(300px, 1fr));
            gap: 14px;
        }

        .url-card,
        .server-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .url-card {
            padding: 16px;
        }

        .url-card.ok {
            border-left: 4px solid var(--ok);
        }

        .url-card.alert {
            border-left: 4px solid var(--alert);
        }

        .url-card.error {
            border-left: 4px solid var(--error);
        }

        .url-header {
            display: flex;
            justify-content: space-between;
            gap: 12px;
            align-items: center;
        }

        .url-name {
            margin: 0;
            font-size: 17px;
        }

        .url-address {
            margin-top: 7px;
            color: var(--muted);
            font-size: 12px;
            word-break: break-all;
        }

        .url-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 9px;
            margin-top: 14px;
        }

        .stat {
            padding: 10px;
            background: var(--surface-soft);
            border-radius: 7px;
        }

        .stat-label {
            color: var(--muted);
            font-size: 11px;
            text-transform: uppercase;
        }

        .stat-value {
            margin-top: 5px;
            font-size: 15px;
            font-weight: bold;
        }

        .servers-grid {
            display: grid;
            grid-template-columns:
                repeat(auto-fit, minmax(420px, 1fr));
            gap: 16px;
        }

        .server-card.ok {
            border-top: 4px solid var(--ok);
        }

        .server-card.alert {
            border-top: 4px solid var(--alert);
        }

        .server-card.error {
            border-top: 4px solid var(--error);
        }

        .server-header {
            display: flex;
            justify-content: space-between;
            gap: 14px;
            padding: 16px 18px;
            border-bottom: 1px solid var(--border);
        }

        .server-title-area {
            min-width: 0;
        }

        .server-name {
            margin: 0;
            font-size: 18px;
            word-break: break-word;
        }

        .server-ip {
            margin-top: 5px;
            color: var(--muted);
            font-size: 12px;
        }

        .server-actions {
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .status-badge {
            display: inline-block;
            padding: 5px 9px;
            border-radius: 999px;
            font-size: 11px;
            font-weight: bold;
        }

        .status-badge.ok {
            color: var(--ok);
            background: var(--ok-soft);
        }

        .status-badge.alert {
            color: var(--alert);
            background: var(--alert-soft);
        }

        .status-badge.error {
            color: var(--error);
            background: var(--error-soft);
        }

        .collapse-button {
            min-width: 32px;
            height: 28px;
            padding: 0 8px;
            border: 1px solid var(--border);
            border-radius: 6px;
            background: var(--surface);
            color: var(--muted);
            cursor: pointer;
            font-weight: bold;
        }

        .collapse-button:hover {
            background: var(--surface-soft);
        }

        .server-content {
            display: block;
        }

        .server-card.collapsed .server-content {
            display: none;
        }

        .server-body {
            padding: 16px 18px;
        }

        .subsection {
            margin-top: 18px;
        }

        .subsection:first-child {
            margin-top: 0;
        }

        .subsection-title {
            margin: 0 0 10px;
            color: var(--muted);
            font-size: 12px;
            font-weight: bold;
            letter-spacing: 0.07em;
            text-transform: uppercase;
        }

        .metric {
            margin-bottom: 12px;
        }

        .metric:last-child {
            margin-bottom: 0;
        }

        .metric-header {
            display: flex;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 5px;
            font-size: 13px;
        }

        .metric-name {
            font-weight: bold;
        }

        .metric-value {
            color: var(--muted);
        }

        .progress {
            height: 9px;
            overflow: hidden;
            background: #e8ecf1;
            border-radius: 999px;
        }

        .progress-bar {
            height: 100%;
            border-radius: 999px;
        }

        .progress-bar.ok {
            background: var(--ok);
        }

        .progress-bar.alert {
            background: var(--alert);
        }

        .progress-bar.error {
            background: var(--error);
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        th,
        td {
            padding: 8px 5px;
            border-bottom: 1px solid #edf0f3;
            text-align: left;
            vertical-align: top;
            font-size: 13px;
        }

        th {
            color: var(--muted);
            font-size: 11px;
            text-transform: uppercase;
        }

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

        .detail {
            color: var(--muted);
            word-break: break-word;
        }

        .server-footer {
            display: grid;
            grid-template-columns: 1fr 1fr auto;
            gap: 10px;
            padding: 11px 18px;
            background: var(--surface-soft);
            border-top: 1px solid var(--border);
            color: var(--muted);
            font-size: 11px;
        }

        .error-message {
            margin-top: 12px;
            padding: 10px;
            border-radius: 6px;
            color: var(--alert);
            background: var(--alert-soft);
            font-size: 12px;
            font-weight: bold;
            word-break: break-word;
        }

        .empty-message {
            display: none;
            padding: 24px;
            background: var(--surface);
            border: 1px dashed var(--border);
            border-radius: 10px;
            color: var(--muted);
            text-align: center;
        }

        .stale {
            color: var(--alert);
        }

        .hidden {
            display: none !important;
        }


        @media (max-width: 1100px) {
            .summary-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
        }

        @media (max-width: 700px) {
            .page {
                padding: 12px;
            }

            .topbar {
                flex-direction: column;
            }

            .summary-grid,
            .servers-grid,
            .url-grid {
                grid-template-columns: 1fr;
            }

            .server-footer {
                grid-template-columns: 1fr;
            }

            .visible-counter {
                width: 100%;
                margin-left: 0;
            }
        }

/* SSL certificate warning state */

.url-card.warning {
    border-left: 4px solid var(--warning, #b7791f);
}

.status-badge.warning {
    color: var(--warning, #b7791f);
    background: var(--warning-soft, #fff0e3);
}