:root {
    --ground: #f4f6f8;
    --surface: #ffffff;
    --surface-alt: #eaeef2;
    --ink: #14191f;
    --ink-soft: #3c4854;
    --muted: #63707d;
    --rule: #d5dde4;
    --rule-soft: #e6ecf1;
    --accent: #10566a;
    --accent-soft: #dcedf2;
    --accent-strong: #0b4152;
    --accent-shadow: rgba(16, 86, 106, 0.35);

    --ok: #1f6b47;
    --ok-soft: #dcefe4;
    --warn: #8a5209;
    --warn-soft: #f8ecda;
    --bad: #9c2c26;
    --bad-soft: #f8e3e1;

    --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;
    --sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --ground: #0e1317;
        --surface: #161d23;
        --surface-alt: #1d262d;
        --ink: #e3eaf0;
        --ink-soft: #bdc8d3;
        --muted: #8896a3;
        --rule: #27323b;
        --rule-soft: #1f272e;
        --accent: #64c8de;
        --accent-soft: #14313a;
        --accent-strong: #8fdcec;
        --accent-shadow: rgba(100, 200, 222, 0.28);

        --ok: #6cc095;
        --ok-soft: #163024;
        --warn: #e0a855;
        --warn-soft: #2e2415;
        --bad: #e8877f;
        --bad-soft: #341d1b;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--ground);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.55;
}

.mono, .num {
    font-family: var(--mono);
    font-size: 0.9em;
}

.num {
    font-variant-numeric: tabular-nums;
}

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

a {
    color: var(--accent);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ---------- page ---------- */

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

.sidebar {
    width: 220px;
    flex: 0 0 220px;
    background: var(--surface);
    border-right: 1px solid var(--rule);
    padding: 24px 18px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.brand {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-weight: 700;
    letter-spacing: -0.01em;
    font-size: 18px;
}

.brand-sub {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

.nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-list a {
    display: block;
    padding: 7px 10px;
    border-radius: 4px;
    color: var(--ink-soft);
    text-decoration: none;
}

.nav-list a:hover {
    background: var(--surface-alt);
}

.nav-list a.active {
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 600;
}

.sidebar-note {
    margin-top: auto;
    font-size: 12.5px;
    color: var(--muted);
    border-top: 1px solid var(--rule-soft);
    padding-top: 14px;
}

.content {
    flex: 1 1 auto;
    padding: 32px 36px 96px;
    max-width: 1200px;
    min-width: 0;
}

/* ---------- headings ---------- */

.content-head {
    border-bottom: 1px solid var(--rule);
    padding-bottom: 20px;
    margin-bottom: 24px;
}

.eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 8px;
}

h1 {
    font-size: 30px;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0 0 10px;
    text-wrap: balance;
}

h2 {
    font-size: 19px;
    letter-spacing: -0.01em;
    margin: 32px 0 12px;
}

.lede {
    color: var(--ink-soft);
    max-width: 70ch;
    margin: 0;
}

/* ---------- tables ---------- */

.scroller {
    overflow-x: auto;
    border: 1px solid var(--rule);
    border-radius: 5px;
    background: var(--surface);
}

table {
    border-collapse: collapse;
    width: 100%;
    font-size: 14px;
}

th {
    text-align: left;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--muted);
    font-weight: 600;
    padding: 10px 14px;
    border-bottom: 1px solid var(--rule);
    white-space: nowrap;
}

td {
    padding: 11px 14px;
    border-bottom: 1px solid var(--rule-soft);
    vertical-align: top;
}

tbody tr:last-child td {
    border-bottom: none;
}

td .chip {
    margin-bottom: 4px;
}

table.kv {
    font-size: 14px;
}

table.kv th {
    text-transform: none;
    letter-spacing: 0;
    font-size: 12px;
    width: 120px;
    border-bottom: 1px solid var(--rule-soft);
}

/* ---------- chips ---------- */

.chip {
    display: inline-block;
    font-family: var(--mono);
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.06em;
    padding: 2px 6px;
    border-radius: 3px;
    background: var(--surface-alt);
    color: var(--muted);
    white-space: nowrap;
}

/* In flight. Pulses so a slow call is visibly still working, using the same timing as the button. */
.chip-running {
    background: var(--accent-soft);
    color: var(--accent);
    animation: working 1.4s ease-in-out infinite;
}

.chip-ok { background: var(--ok-soft); color: var(--ok); }
.chip-client-error { background: var(--warn-soft); color: var(--warn); }
.chip-error { background: var(--bad-soft); color: var(--bad); }
.chip-idle { background: var(--surface-alt); color: var(--muted); }

/* ---------- panes and controls ---------- */

.pane {
    background: var(--surface);
    border: 1px solid var(--rule);
    border-radius: 5px;
    padding: 16px 20px;
}

.summary {
    max-width: 720px;
}

.actions {
    display: flex;
    gap: 10px;
    margin: 20px 0;
    flex-wrap: wrap;
    align-items: center;
}

button {
    font-family: inherit;
    font-size: 14px;
    padding: 7px 14px;
    border-radius: 4px;
    border: 1px solid var(--rule);
    background: var(--surface);
    color: var(--ink);
    cursor: pointer;
    transition: background-color 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}

button:hover:not(:disabled) {
    border-color: var(--accent);
    background: var(--surface-alt);
}

button:disabled {
    opacity: 0.55;
    cursor: default;
}

button.primary,
.button-link.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--surface);
    font-weight: 600;
}

button.primary:hover:not(:disabled),
.button-link.primary:hover {
    background: var(--accent-strong);
    border-color: var(--accent-strong);
    box-shadow: 0 2px 6px var(--accent-shadow);
    transform: translateY(-1px);
}

button.primary:active:not(:disabled),
.button-link.primary:active {
    transform: translateY(0);
    box-shadow: none;
}

/* Sending: disabled, so it cannot be pressed twice, but visibly still working. */
button.primary:disabled {
    opacity: 1;
    background: var(--accent);
    border-color: var(--accent);
    animation: working 1.4s ease-in-out infinite;
}

@keyframes working {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@media (prefers-reduced-motion: reduce) {
    button,
    .button-link {
        transition: none;
    }

    button.primary:hover:not(:disabled),
    .button-link.primary:hover {
        transform: none;
    }

    button.primary:disabled {
        animation: none;
        opacity: 0.75;
    }

    .chip-running {
        animation: none;
    }
}

@media (prefers-color-scheme: dark) {
    button.primary,
    .button-link.primary {
        color: #0e1317;
    }
}

.button-link {
    display: inline-block;
    font-size: 14px;
    padding: 7px 14px;
    border-radius: 4px;
    border: 1px solid var(--rule);
    background: var(--surface);
    color: var(--ink);
    text-decoration: none;
}

.button-link:hover {
    border-color: var(--accent);
    background: var(--surface-alt);
}

/* ---------- submission result ---------- */

.result {
    background: var(--surface);
    border: 1px solid var(--rule);
    border-left: 3px solid var(--rule);
    border-radius: 0 5px 5px 0;
    padding: 12px 16px;
    margin-top: 8px;
}

.result-running { border-left-color: var(--accent); }
.result-passed { border-left-color: var(--ok); }
.result-failed { border-left-color: var(--bad); }

.result-head {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.result-name {
    font-weight: 600;
}

.result-note {
    font-size: 13px;
    color: var(--muted);
    margin: 6px 0 0;
    max-width: 80ch;
}

.result-failure {
    color: var(--bad);
    font-size: 13.5px;
    margin: 8px 0 0;
}

.request-line {
    margin: 10px 0 0;
    color: var(--ink-soft);
    word-break: break-all;
}

.metric {
    font-family: var(--mono);
    font-size: 11.5px;
    color: var(--muted);
}

details {
    margin: 10px 0 0;
}

summary {
    cursor: pointer;
    font-size: 13.5px;
    color: var(--ink-soft);
}

pre.code {
    background: var(--ground);
    border: 1px solid var(--rule-soft);
    border-radius: 4px;
    padding: 12px;
    overflow-x: auto;
    font-family: var(--mono);
    font-size: 12.5px;
    line-height: 1.5;
    margin: 8px 0 0;
}

@media (max-width: 640px) {
    .page { flex-direction: column; }
    .sidebar { width: 100%; flex: none; }
    .content { padding: 24px 18px 64px; }
}