:root {
  color-scheme: light dark;
  --bg: #f4f6f8;
  --panel: #ffffff;
  --ink: #1b2733;
  --muted: #5b6b7a;
  --line: #dde3e9;
  --accent: #2f6690;
  --accent-ink: #ffffff;
  --code-bg: #f0f3f6;
  --ok: #2e7d4f;
  --warn: #8f5b00;
  --danger: #c0392b;
  --seg-other: #8795a3;
  --seg-shared: #2f6690;
  --seg-work: #d9822b;
  --seg-maint: #4aa5a0;
  --mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11181f;
    --panel: #18222c;
    --ink: #e6ecf1;
    --muted: #9aa9b7;
    --line: #2b3946;
    --accent: #6fb1dc;
    --accent-ink: #0d1820;
    --code-bg: #101820;
    --ok: #62c98e;
    --warn: #e5b04d;
    --danger: #ef7d70;
    --seg-other: #6d7c8a;
    --seg-shared: #6fb1dc;
    --seg-work: #e79a4c;
    --seg-maint: #5fc0ba;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

code, pre { font-family: var(--mono); }

.top, .layout, .foot {
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: 16px;
}

.top { padding-block: 32px 20px; }
.top h1 { margin: 0 0 6px; font-size: 1.75rem; line-height: 1.2; }
.top p { margin: 0; max-width: 68ch; color: var(--muted); }
.top code { font-size: .9em; }

.layout {
  display: grid;
  grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.results { display: grid; gap: 16px; min-width: 0; }
.results[hidden] { display: none; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  min-width: 0;
}

.panel h2 { margin: 0 0 12px; font-size: 1.05rem; }

.inputs { position: sticky; top: 16px; }

form { display: grid; gap: 14px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 12px; align-items: end; }

label, legend { font-size: .875rem; font-weight: 600; }
label { display: grid; gap: 5px; }

input[type="number"], select {
  width: 100%;
  min-height: 42px;
  padding: 8px 10px;
  font: inherit;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
}

input:focus-visible, select:focus-visible, button:focus-visible, pre:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

fieldset { margin: 0; padding: 0; border: 0; }
legend { padding: 0; margin-bottom: 5px; }
.hint { margin: 6px 0 0; font-size: .8125rem; color: var(--muted); }

.segmented { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.segmented label { display: block; position: relative; }
.segmented input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.segmented span { display: block; padding: 9px 4px; text-align: center; }
.segmented input:checked + span { background: var(--accent); color: var(--accent-ink); }
.segmented input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: -3px; }

.toggle { display: flex; align-items: center; gap: 9px; font-weight: 500; }
.toggle input { width: 18px; height: 18px; margin: 0; accent-color: var(--accent); }

button {
  min-height: 38px;
  padding: 6px 12px;
  font: inherit;
  font-size: .875rem;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}
button:hover { border-color: var(--accent); color: var(--accent); }

.presets { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 16px; }

.errors { margin: 12px 0 0; padding: 0; list-style: none; color: var(--danger); font-size: .875rem; }

.checks { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.check { display: grid; grid-template-columns: 58px 1fr; gap: 8px; font-size: .9rem; }
.check strong { font-size: .8125rem; }
.check.ok strong { color: var(--ok); }
.check.warn strong { color: var(--warn); }
.check.danger strong { color: var(--danger); }

.memory { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }
.memory-head { display: flex; justify-content: space-between; gap: 12px; font-size: .875rem; margin-bottom: 8px; }
.memory-head b { font-family: var(--mono); font-weight: 600; white-space: nowrap; }
.memory-head b.over { color: var(--danger); }

.bar { display: flex; height: 14px; overflow: hidden; background: var(--code-bg); border-radius: 4px; }
.bar span { display: block; min-width: 2px; }
.seg-other { background: var(--seg-other); }
.seg-shared { background: var(--seg-shared); }
.seg-work { background: var(--seg-work); }
.seg-maint { background: var(--seg-maint); }

.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 10px 0 0; padding: 0; list-style: none; font-size: .8125rem; color: var(--muted); }
.legend i { display: inline-block; width: 10px; height: 10px; margin-right: 6px; border-radius: 2px; }
.legend b { color: var(--ink); font-family: var(--mono); font-weight: 600; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { text-align: left; font-size: .8125rem; color: var(--muted); font-weight: 600; }
th, td { padding: 8px 12px 8px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
td.name { min-width: 230px; }
td.name code { font-size: .85rem; }
td.value { font-family: var(--mono); font-weight: 600; white-space: nowrap; }
td.formula { color: var(--muted); font-size: .8125rem; min-width: 180px; }
.badge { margin-left: 8px; padding: 1px 5px; font-size: .6875rem; color: var(--warn); border: 1px solid currentColor; border-radius: 4px; }

.conf-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 12px; }
.conf-head h2 { margin: 0; font-family: var(--mono); }
.actions { display: flex; gap: 8px; }

pre {
  margin: 0;
  padding: 14px;
  overflow-x: auto;
  font-size: .8125rem;
  line-height: 1.6;
  background: var(--code-bg);
  border-radius: 6px;
}

.foot { padding-block: 20px 32px; font-size: .875rem; color: var(--muted); }

[hidden] { display: none !important; }

button.primary { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); }
button.primary:hover { color: var(--accent-ink); }

.tabs { display: inline-flex; gap: 4px; margin-top: 16px; padding: 4px; background: var(--line); border-radius: 8px; }
.tabs button { min-height: 36px; border: 0; border-radius: 6px; font-weight: 600; }
.tabs button[aria-selected="true"] { color: var(--ink); background: var(--panel); }
.tabs button:hover { color: var(--ink); }

#view-wizard { max-width: 1180px; margin-inline: auto; padding-inline: 16px; }
#wizard-ask, .wizard-result { max-width: 760px; }

.wizard h2 { margin: 18px 0 6px; font-size: 1.375rem; line-height: 1.3; outline: 0; }
.progress { display: grid; gap: 6px; font-size: .8125rem; color: var(--muted); }
.progress-track { height: 6px; overflow: hidden; background: var(--code-bg); border-radius: 3px; }
#step-fill { height: 100%; background: var(--accent); transition: width .2s; }
.step-help { margin: 0 0 12px; color: var(--muted); }

.how { margin-bottom: 14px; font-size: .9rem; }
.how summary { color: var(--accent); cursor: pointer; }
.how p { margin: 8px 0 6px; color: var(--muted); }

.cmd {
  display: block;
  margin-top: 6px;
  padding: 8px 10px;
  overflow-x: auto;
  font-size: .8125rem;
  white-space: nowrap;
  background: var(--code-bg);
  border-radius: 6px;
}

.options { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 8px; }
.option { display: grid; gap: 2px; min-height: 52px; padding: 10px 14px; text-align: left; }
.option[aria-pressed="true"] { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.option-label { font-size: 1rem; font-weight: 600; }
.option-note { color: var(--muted); font-size: .8125rem; }
.option:hover .option-note { color: var(--muted); }

.custom { display: block; margin-top: 14px; }
.custom-row { display: flex; align-items: center; gap: 8px; }
.custom-row input { flex: 1 1 auto; min-width: 0; }
.custom-row button { flex: none; min-height: 42px; }
.unit { color: var(--muted); font-weight: 400; }
.field-error { margin: 6px 0 0; color: var(--danger); font-size: .875rem; }
.field-error:empty { display: none; }

.back { margin-top: 16px; }

.wizard-result { display: grid; gap: 16px; }
.wizard-result h2 { outline: 0; }
.summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px 16px; margin: 0; }
.summary dt { font-size: .8125rem; color: var(--muted); }
.summary dd { margin: 0; font-weight: 600; }

.assumed { margin-top: 14px; padding: 12px 14px; font-size: .9rem; background: var(--code-bg); border-left: 3px solid var(--warn); border-radius: 4px; }
.assumed h3 { margin: 0 0 4px; font-size: .9rem; }
.assumed ul { margin: 0; padding-left: 18px; }

.result-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }

.conf-scroll { max-height: 340px; overflow-y: auto; }

.steps { display: grid; gap: 14px; margin: 0; padding-left: 20px; }
.steps li { min-width: 0; }
.note { margin: 12px 0 0; color: var(--muted); font-size: .875rem; }
#w-explain-title + .note { margin: 0 0 8px; }

.param-group h3 { margin: 18px 0 8px; font-size: .9375rem; color: var(--accent); }
.param-card { padding: 12px 0; border-top: 1px solid var(--line); }
.param-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; }
.param-head code { font-size: .875rem; overflow-wrap: anywhere; }
.param-head b { font-family: var(--mono); font-size: .9375rem; }
.param-head .badge { margin-left: 0; }
.param-what, .param-why { margin: 6px 0 0; font-size: .9rem; }
.param-why { color: var(--muted); }
.param-why strong { color: var(--ink); font-weight: 600; }

@media (max-width: 860px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .inputs { position: static; }
  .top { padding-top: 24px; }
  .top h1 { font-size: 1.5rem; }
}