:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-alt: #f8fafc;
    --text: #17202a;
    --muted: #657282;
    --line: #d9e0e7;
    --primary: #145da0;
    --primary-dark: #0d3f70;
    --ok: #127a43;
    --ok-bg: #e8f7ef;
    --warn: #9a5b00;
    --warn-bg: #fff3d8;
    --danger: #b42318;
    --danger-bg: #fdecea;
    --radius: 8px;
    --shadow: 0 10px 30px rgba(20, 37, 54, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.45;
}

a {
    color: inherit;
}

.page-shell {
    width: min(1280px, calc(100% - 32px));
    margin: 0 auto;
    padding: 20px 0 40px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: center;
    padding: 14px 16px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    min-width: 220px;
}

.brand-logo,
.brand-fallback {
    width: 44px;
    height: 44px;
    border-radius: 6px;
    object-fit: cover;
    border: 1px solid var(--line);
}

.brand-fallback {
    display: grid;
    place-items: center;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
}

.brand-title {
    display: block;
    font-size: 1.05rem;
    font-weight: 700;
}

.eyebrow {
    display: block;
    margin: 0 0 3px;
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

.main-nav,
.button-row,
.danger-zone {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.nav-link,
.tab-link {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 8px 12px;
    border-radius: 6px;
    color: var(--muted);
    font-weight: 700;
    text-decoration: none;
}

.nav-link:hover,
.tab-link:hover,
.nav-link-active,
.tab-link-active {
    background: #e8f1fb;
    color: var(--primary-dark);
}

.content-stack {
    display: grid;
    gap: 18px;
    margin-top: 18px;
}

.page-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 0;
    font-size: 1.75rem;
}

h2 {
    margin-bottom: 0;
    font-size: 1.2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.stat-card,
.panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.stat-card {
    padding: 16px;
    border-left: 5px solid var(--line);
}

.stat-card span {
    display: block;
    color: var(--muted);
    font-size: 0.9rem;
}

.stat-card strong {
    display: block;
    margin-top: 4px;
    font-size: 2rem;
}

.stat-card-ok {
    border-left-color: var(--ok);
}

.stat-card-warn {
    border-left-color: var(--warn);
}

.stat-card-error {
    border-left-color: var(--danger);
}

.panel {
    padding: 18px;
}

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

.muted,
.empty-note,
.label-text,
.table-subline {
    color: var(--muted);
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.status-table {
    width: 100%;
    min-width: 850px;
    border-collapse: collapse;
    background: var(--surface);
}

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

.status-table th {
    background: var(--surface-alt);
    color: var(--muted);
    font-size: 0.84rem;
    text-transform: uppercase;
}

.endpoint-col {
    width: 48px;
    text-align: center;
}

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

.row-error td {
    background: #fff8f7;
}

.row-update_available td,
.row-warning td {
    background: #fffaf0;
}

.table-subline {
    display: block;
    margin-top: 2px;
    font-size: 0.86rem;
    word-break: break-word;
}

.endpoint-link {
    display: inline-grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: #e8f1fb;
    color: var(--primary-dark);
    font-weight: 700;
    text-decoration: none;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 5px 9px;
    border-radius: 999px;
    font-size: 0.86rem;
    font-weight: 700;
    white-space: nowrap;
}

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

.status-update_available,
.status-warning {
    background: var(--warn-bg);
    color: var(--warn);
}

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

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 9px 14px;
    border: 1px solid transparent;
    border-radius: 6px;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    text-decoration: none;
}

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

.button-secondary {
    background: #e8f1fb;
    color: var(--primary-dark);
    border-color: #c8dbef;
}

.button-ghost {
    background: var(--surface);
    color: var(--text);
    border-color: var(--line);
}

.button-danger {
    background: var(--danger-bg);
    color: var(--danger);
    border-color: #f3c4bf;
}

.form-grid {
    display: grid;
    grid-template-columns: minmax(220px, 1fr) minmax(220px, 1fr) auto;
    gap: 12px;
    align-items: end;
}

.form-grid-wide {
    flex: 1;
}

label span,
.label-text {
    display: block;
    margin-bottom: 6px;
    font-size: 0.9rem;
    font-weight: 700;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="file"],
input[type="number"],
select {
    width: 100%;
    min-height: 40px;
    padding: 9px 11px;
    border: 1px solid #cfd7df;
    border-radius: 6px;
    background: #fff;
    color: var(--text);
    font: inherit;
}

.checkbox {
    display: flex;
    gap: 10px;
    align-items: center;
    min-height: 40px;
}

.checkbox span {
    margin: 0;
}

.admin-list {
    display: grid;
    gap: 10px;
}

.admin-row {
    display: flex;
    gap: 12px;
    align-items: end;
    padding: 12px;
    background: var(--surface-alt);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 6px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    width: fit-content;
}

.settings-logo {
    width: 72px;
    height: 72px;
    border: 1px solid var(--line);
    border-radius: 6px;
    object-fit: cover;
}

.code-box {
    display: grid;
    gap: 6px;
    padding: 12px;
    background: var(--surface-alt);
    border: 1px dashed #b8c3cf;
    border-radius: var(--radius);
}

code {
    word-break: break-all;
    font-family: Arial, Helvetica, sans-serif;
}

.top-gap {
    margin-top: 16px;
}

.flash {
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: var(--radius);
    font-weight: 700;
}

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

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

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

.auth-body {
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-card {
    width: min(460px, 100%);
    padding: 24px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.stack {
    display: grid;
    gap: 12px;
}

.text-link {
    display: inline-block;
    margin-top: 16px;
}

@media (max-width: 900px) {
    .topbar,
    .page-heading,
    .panel-header,
    .admin-row {
        align-items: stretch;
        flex-direction: column;
    }

    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

@media (max-width: 560px) {
    .page-shell {
        width: min(100% - 20px, 1280px);
    }

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

    h1 {
        font-size: 1.45rem;
    }
}