:root {
    --bg: #f6f7f9;
    --surface: #ffffff;
    --surface-2: #f0f2f5;
    --border: #dde1e7;
    --text: #1d232b;
    --muted: #66707d;
    --accent: #2563eb;
    --accent-text: #ffffff;
    --ok: #15803d;
    --ok-bg: #dcfce7;
    --err: #b91c1c;
    --err-bg: #fee2e2;
    --warn: #b45309;
    --code-bg: #0f141a;
    --code-text: #d7dde5;
    --code-err: #ff8a8a;
    --code-meta: #7d8896;
    --radius: 8px;
    --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f1318;
        --surface: #171c23;
        --surface-2: #1e252e;
        --border: #2b333e;
        --text: #e3e8ee;
        --muted: #8b96a3;
        --accent: #4f8cff;
        --ok: #4ade80;
        --ok-bg: #12301f;
        --err: #f87171;
        --err-bg: #3a1717;
        --warn: #fbbf24;
        --code-bg: #0a0d11;
    }
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
    background: var(--bg);
    color: var(--text);
    font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre, .mono { font-family: var(--mono); font-size: 13px; }

header.top {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 14px 20px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}
header.top h1 { font-size: 18px; margin: 0; font-weight: 600; }
header.top .meta { color: var(--muted); font-size: 13px; }
header.top .spacer { flex: 1; }

main { padding: 20px; max-width: 1400px; margin: 0 auto; }

input[type=text], input[type=search] {
    font: inherit;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 10px;
    min-width: 0;
}
input[type=text]:focus, input[type=search]:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
input.invalid { border-color: var(--err); }

button {
    font: inherit;
    color: var(--text);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 12px;
    cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--muted); }
button:disabled { opacity: .55; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
button.small { padding: 2px 8px; font-size: 12px; }

.error { color: var(--err); background: var(--err-bg); padding: 10px 14px; border-radius: var(--radius); white-space: pre-wrap; }
.muted { color: var(--muted); }
.empty { color: var(--muted); padding: 24px; text-align: center; }

/* Instance list */
table.list { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
table.list th, table.list td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.list th { background: var(--surface-2); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
table.list tr:last-child td { border-bottom: 0; }
table.list tbody tr:hover { background: var(--surface-2); }
table.list .key { font-weight: 600; }
table.list small { display: block; color: var(--muted); }
.toolbar { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar input { flex: 1; max-width: 360px; }

/* Instance page */
.layout { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 20px; align-items: start; }
@media (max-width: 900px) { .layout { grid-template-columns: minmax(0, 1fr); } }

.sidebar {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    position: sticky;
    top: 12px;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 24px);
}
@media (max-width: 900px) { .sidebar { position: static; max-height: 50vh; } }
.sidebar .search { padding: 10px; border-bottom: 1px solid var(--border); display: flex; gap: 6px; }
.sidebar .search input { flex: 1; }
.cmd-list { overflow-y: auto; padding: 4px 0 8px; }
.cmd-list .ns { padding: 10px 12px 4px; font-size: 11px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.cmd-list a { display: block; padding: 5px 12px; color: var(--text); border-left: 3px solid transparent; }
.cmd-list a:hover { background: var(--surface-2); text-decoration: none; }
.cmd-list a.active { background: var(--surface-2); border-left-color: var(--accent); }
.cmd-list a .name { font-family: var(--mono); font-size: 12.5px; word-break: break-all; }
.cmd-list a .desc { display: block; color: var(--muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 16px; }
.panel h2 { margin: 0 0 4px; font-size: 18px; font-family: var(--mono); word-break: break-all; }
.panel h3 { margin: 18px 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.panel .description { margin: 0 0 6px; }
details.help { margin-top: 8px; }
details.help summary { cursor: pointer; color: var(--muted); font-size: 13px; }
details.help pre { white-space: pre-wrap; background: var(--surface-2); padding: 10px; border-radius: 6px; margin: 8px 0 0; }

.field { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 4px 14px; padding: 8px 0; border-top: 1px dashed var(--border); }
.field:first-of-type { border-top: 0; }
@media (max-width: 640px) { .field { grid-template-columns: minmax(0, 1fr); } }
.field .label { font-family: var(--mono); font-size: 13px; padding-top: 6px; word-break: break-all; }
.field .label .req { color: var(--err); margin-left: 2px; }
.field .label .tag { font-family: system-ui, sans-serif; font-size: 11px; color: var(--muted); margin-left: 6px; }
.field .control { display: flex; flex-direction: column; gap: 6px; }
.field .row { display: flex; gap: 6px; align-items: center; }
.field .row input[type=text] { flex: 1; }
.field .help-text { color: var(--muted); font-size: 12.5px; white-space: pre-wrap; }
.field label.check { display: inline-flex; gap: 6px; align-items: center; padding-top: 5px; cursor: pointer; }

.preview { display: flex; gap: 8px; align-items: flex-start; margin-top: 16px; }
.preview code { flex: 1; background: var(--surface-2); padding: 8px 10px; border-radius: 6px; word-break: break-all; white-space: pre-wrap; }
.actions { display: flex; gap: 10px; align-items: center; margin-top: 14px; flex-wrap: wrap; }
.form-error { color: var(--err); font-size: 13px; }

.output-head { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; flex-wrap: wrap; }
.output-head .title { font-weight: 600; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12.5px; font-weight: 600; }
.badge.ok { color: var(--ok); background: var(--ok-bg); }
.badge.err { color: var(--err); background: var(--err-bg); }
.badge.run { color: var(--warn); background: var(--surface-2); }
pre.output {
    margin: 0;
    background: var(--code-bg);
    color: var(--code-text);
    padding: 12px 14px;
    border-radius: 6px;
    min-height: 120px;
    max-height: 70vh;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
    border: 2px solid transparent;
}
pre.output.ok { border-color: var(--ok); }
pre.output.err { border-color: var(--err); }
pre.output .stderr { color: var(--code-err); }
pre.output .meta { color: var(--code-meta); }