:root {
    --bg: #f5f7fb;
    --surface: #ffffff;
    --surface-2: #eef3f8;
    --text: #18202f;
    --muted: #657084;
    --border: #dbe3ee;
    --primary: #156b73;
    --primary-dark: #0d5258;
    --danger: #b42318;
    --danger-bg: #fff0ee;
    --success: #127a4d;
    --success-bg: #e9f8f0;
    --warning: #976500;
    --warning-bg: #fff7df;
    --info: #2357a5;
    --info-bg: #eef5ff;
    --radius: 8px;
    --shadow: 0 12px 30px rgba(27, 39, 64, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 15px;
    line-height: 1.45;
    letter-spacing: 0;
}

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

a:hover {
    text-decoration: underline;
}

code,
pre {
    font-family: Consolas, Monaco, monospace;
}

.app-shell {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    min-height: 100vh;
}

.sidebar {
    background: #17212f;
    color: #fff;
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 8px;
    background: #29a68a;
    color: #fff;
    font-weight: 700;
}

.brand strong,
.brand small {
    display: block;
}

.brand small {
    color: #b9c4d4;
}

.nav {
    display: grid;
    gap: 6px;
}

.nav a {
    color: #d7dfeb;
    padding: 10px 12px;
    border-radius: 8px;
}

.nav a.active,
.nav a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.11);
    text-decoration: none;
}

.logout-form {
    margin-top: auto;
}

.main {
    min-width: 0;
    padding: 28px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.page-header h1 {
    margin: 0;
    font-size: 28px;
}

.page-header p {
    margin: 4px 0 0;
    color: var(--muted);
}

.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 18px;
}

.panel.narrow {
    max-width: 860px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.panel-header h2 {
    margin: 0;
    font-size: 18px;
}

.two-columns {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 18px;
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}

.metric {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow);
}

.metric span {
    display: block;
    color: var(--muted);
    margin-bottom: 8px;
}

.metric strong {
    font-size: 30px;
}

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

.detail-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.health-grid div,
.detail-grid div {
    min-width: 0;
    background: var(--surface-2);
    border-radius: var(--radius);
    padding: 12px;
}

.health-grid strong,
.health-grid span,
.detail-grid span,
.detail-grid strong {
    display: block;
    overflow-wrap: anywhere;
}

.health-grid span,
.detail-grid span {
    color: var(--muted);
    font-size: 13px;
}

.table-wrap {
    overflow-x: auto;
}

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

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

th {
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

td.actions,
th.actions {
    width: 1%;
    white-space: nowrap;
}

.actions,
.button-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 4px 8px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
}

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

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

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

.badge.info {
    color: var(--info);
    background: var(--info-bg);
}

.badge.muted {
    color: #596170;
    background: #edf0f4;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 8px 13px;
    border: 1px solid transparent;
    border-radius: 8px;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

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

.btn-light {
    background: #edf3f9;
    color: #1d2d3f;
    border-color: #d5e0ea;
}

.btn-ghost {
    background: transparent;
    color: inherit;
    border-color: rgba(255, 255, 255, 0.25);
}

.btn.full {
    width: 100%;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.form-stack {
    display: grid;
    gap: 16px;
}

.field {
    display: grid;
    gap: 6px;
}

.field label,
.check-row {
    font-weight: 700;
}

.field small {
    color: var(--muted);
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid #cfd8e5;
    border-radius: 8px;
    padding: 10px 11px;
    font: inherit;
    color: var(--text);
    background: #fff;
}

textarea {
    resize: vertical;
}

input[readonly],
textarea[readonly] {
    background: #f3f6f9;
}

.full-row {
    grid-column: 1 / -1;
}

.check-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.check-row input {
    width: auto;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
}

.inline-filter {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 320px;
}

.divider {
    height: 1px;
    background: var(--border);
}

.alert {
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 16px;
    border: 1px solid transparent;
}

.alert-success {
    color: var(--success);
    background: var(--success-bg);
    border-color: #bfe9d2;
}

.alert-danger {
    color: var(--danger);
    background: var(--danger-bg);
    border-color: #ffd2cb;
}

.alert-warning {
    color: var(--warning);
    background: var(--warning-bg);
    border-color: #ffe6a3;
}

.response-row pre,
.payload {
    max-height: 360px;
    overflow: auto;
    background: #111827;
    color: #e6edf5;
    border-radius: 8px;
    padding: 14px;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.guest-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background: #eef3f8;
}

.guest-card {
    width: min(420px, 100%);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
}

.guest-brand {
    margin-bottom: 22px;
}

.runner-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}

.runner-box {
    background: var(--surface-2);
    border-radius: var(--radius);
    padding: 16px;
}

.runner-box span {
    display: block;
    color: var(--muted);
    margin-bottom: 8px;
}

.runner-box strong {
    display: block;
    font-size: 24px;
    overflow-wrap: anywhere;
}

.runner-log {
    display: grid;
    gap: 8px;
    max-height: 260px;
    overflow: auto;
    background: #111827;
    color: #e6edf5;
    border-radius: 8px;
    padding: 14px;
    font-family: Consolas, Monaco, monospace;
    font-size: 13px;
}

@media (max-width: 1050px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .nav {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .two-columns,
    .status-grid,
    .health-grid,
    .detail-grid,
    .runner-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .main {
        padding: 18px;
    }

    .nav,
    .status-grid,
    .health-grid,
    .detail-grid,
    .runner-grid,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .panel-header,
    .actions,
    .button-row,
    .inline-filter {
        align-items: stretch;
        flex-direction: column;
    }

    .inline-filter {
        min-width: 0;
        width: 100%;
    }

    td.actions,
    th.actions {
        white-space: normal;
    }
}