:root {
  color-scheme: light;
  --bg: #f5f7f9;
  --surface: #ffffff;
  --surface-2: #eef2f5;
  --text: #1d2329;
  --muted: #56616c;
  --border: #d4dbe2;
  --border-strong: #b6c1cb;
  --accent: #0a7aa0;
  --accent-hover: #086484;
  --accent-text: #ffffff;
  --accent-soft: #e2f4fa;
  --brand: #13b9e6;
  --ink: #2b2728;
  --ink-text: #f4f6f8;
  --danger: #b42318;
  --danger-soft: #fdecea;
  --warn: #7a5300;
  --warn-soft: #fff3dc;
  --ok: #1a7f37;
  --ok-soft: #e7f5eb;
  --radius: 10px;
  --radius-small: 6px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 1px 3px rgba(16, 24, 40, 0.07);
  --focus: 0 0 0 3px rgba(19, 185, 230, 0.45);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #101316;
    --surface: #181c21;
    --surface-2: #20262c;
    --text: #e5e9ed;
    --muted: #9ba6b1;
    --border: #2d353d;
    --border-strong: #46515c;
    --accent: #4fc4ec;
    --accent-hover: #7dd4f2;
    --accent-text: #05222d;
    --accent-soft: #0f2f3b;
    --ink: #0b0d0f;
    --danger: #ff8a80;
    --danger-soft: #3a1714;
    --warn: #e9b949;
    --warn-soft: #33270c;
    --ok: #5fd479;
    --ok-soft: #12301b;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 var(--sans);
}

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

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

code {
  background: var(--surface-2);
  border-radius: 4px;
  padding: 0.05em 0.3em;
}

.wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 16px;
}

/* header */

.site-header {
  background: var(--ink);
  color: var(--ink-text);
  border-bottom: 3px solid var(--brand);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
  flex-wrap: wrap;
}

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

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background:
    radial-gradient(circle at 30% 30%, #86d4f0 0 18%, transparent 19%),
    radial-gradient(circle at 70% 62%, #ffffff 0 14%, transparent 15%),
    var(--brand);
}

.brand-kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #9fd9ee;
}

.site-header h1 { margin: 0; font-size: 22px; line-height: 1.2; }

.header-right { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.header-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* signing in with GitHub */
.header-account { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.header-account[hidden] { display: none; }
.header-account .link-button { color: var(--ink-text); opacity: 0.85; }
.header-account .link-button:hover { opacity: 1; }
.sign-in-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 6px;
  background: transparent;
  color: var(--ink-text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.sign-in-button:hover { background: rgba(255, 255, 255, 0.1); }
.sign-in-button svg { width: 16px; height: 16px; fill: currentColor; }
.avatar { width: 26px; height: 26px; border-radius: 50%; }
.header-links a { color: var(--ink-text); text-decoration: none; opacity: 0.85; font-size: 14px; }
.header-links a:hover { opacity: 1; text-decoration: underline; color: var(--ink-text); }

/* layout */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 400px;
  gap: 24px;
  align-items: start;
  padding-top: 24px;
  padding-bottom: 24px;
}

@media (max-width: 980px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
}

.form { display: grid; gap: 16px; min-width: 0; }

.intro p { margin: 0 0 12px; max-width: 70ch; }
.intro-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.loaded-note {
  margin: 12px 0 0;
  padding: 8px 12px;
  background: var(--accent-soft);
  border-radius: var(--radius-small);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  min-width: 0;
}

.card h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 6px;
  font-size: 18px;
}

.step {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  flex: none;
}

.section-hint { margin: 0 0 16px; color: var(--muted); max-width: 75ch; }

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
}

.grid-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.span-2 { grid-column: span 2; }

@media (max-width: 640px) {
  .grid { grid-template-columns: minmax(0, 1fr); }
  .grid-5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .span-2 { grid-column: auto; }
  .card { padding: 16px; }
}

/* fields */

.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }

.field label, fieldset legend { font-weight: 600; font-size: 14px; }

.optional { font-weight: 400; color: var(--muted); font-size: 13px; }

input, select, textarea {
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-small);
  padding: 7px 10px;
  width: 100%;
  min-width: 0;
}

textarea { resize: vertical; font-family: var(--mono); font-size: 13.5px; line-height: 1.5; }
textarea#description { font-family: var(--sans); font-size: 15px; }

input:focus, select:focus, textarea:focus, button:focus-visible, summary:focus-visible, .choice input:focus-visible + .choice-body, .chip input:focus-visible + span, pre:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-color: var(--brand);
}

input[aria-invalid="true"], textarea[aria-invalid="true"] { border-color: var(--danger); }

input[type="checkbox"] { width: auto; accent-color: var(--accent); }

.hint { margin: 0; color: var(--muted); font-size: 13px; }
.field-error { margin: 0; color: var(--danger); font-size: 13px; min-height: 0; }
.field-error:empty { display: none; }

.check { display: flex; gap: 8px; align-items: flex-start; margin: 8px 0 0; }
.check input { margin-top: 4px; flex: none; }

[data-needs].not-applicable { opacity: 0.55; }
.needs-note { display: none; }
[data-needs].not-applicable .needs-note { display: block; color: var(--warn); }

/* interface choices */

.choice-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 760px) { .choice-grid { grid-template-columns: minmax(0, 1fr); } }

.choice { position: relative; cursor: pointer; display: block; }
.choice input { position: absolute; opacity: 0; inset: 0; pointer-events: none; }

.choice-body {
  display: grid;
  gap: 4px;
  height: 100%;
  padding: 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.15s, background 0.15s;
}

.choice:hover .choice-body { border-color: var(--border-strong); }

.choice input:checked + .choice-body {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.choice-icon {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.choice-title { font-weight: 700; }
.choice-text { color: var(--muted); font-size: 13.5px; }

.choice-repo {
  margin-top: 6px;
  font-size: 11.5px;
  word-break: break-all;
  background: transparent;
  padding: 0;
  color: var(--muted);
}

.choice input:not(:checked) + .choice-body .choice-repo { visibility: hidden; }

/* features */

.feature { padding: 14px 0; border-top: 1px solid var(--border); }
.feature:first-of-type { border-top: 0; padding-top: 0; }
.feature-text { margin: 6px 0 0 52px; color: var(--muted); max-width: 72ch; }
.feature-note { margin: 8px 0 0 52px; font-size: 13.5px; color: var(--accent); }
.feature-options { margin: 12px 0 0 52px; display: grid; gap: 4px; }

@media (max-width: 640px) {
  .feature-text, .feature-note, .feature-options { margin-left: 0; }
}

.switch { display: inline-flex; align-items: center; gap: 12px; cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }

.switch-track {
  position: relative;
  width: 40px;
  height: 22px;
  border-radius: 11px;
  background: var(--border-strong);
  transition: background 0.15s;
  flex: none;
}

.switch-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.15s;
}

.switch input:checked + .switch-track { background: var(--accent); }
.switch input:checked + .switch-track::after { transform: translateX(18px); }
.switch input:focus-visible + .switch-track { box-shadow: var(--focus); }
.switch input:disabled + .switch-track { opacity: 0.6; }
.switch input:disabled ~ .feature-title { opacity: 0.8; }

.feature-title { font-weight: 700; font-size: 16px; }

fieldset { border: 0; padding: 0; margin: 0 0 10px; min-width: 0; }
.mode-set { margin-bottom: 14px; }
.mode-set .check { margin-top: 6px; }
input[type="radio"] { width: auto; accent-color: var(--accent); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }

.chip { position: relative; cursor: pointer; }
.chip input { position: absolute; opacity: 0; }

.chip span {
  display: inline-block;
  padding: 5px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 13.5px;
  background: var(--surface);
}

.chip span small { color: var(--muted); margin-left: 4px; }
.chip input:checked + span { background: var(--accent-soft); border-color: var(--accent); color: var(--text); }

/* data rows */

.data-rows { display: grid; gap: 12px; }

.data-row {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  background: var(--surface-2);
}

.data-row-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 10px; }
.data-row-head strong { font-size: 14px; }

.data-row .grid { gap: 10px 12px; }

.inline-action { display: flex; gap: 6px; align-items: center; }
.inline-action input { flex: 1; }
.prefix { font-family: var(--mono); color: var(--muted); font-size: 14px; }

.empty { color: var(--muted); margin: 0 0 12px; }
.row-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

/* popular packages */

.popular { margin: 0 0 16px; }
.popular > summary { cursor: pointer; font-weight: 600; color: var(--accent); }
.popular-body { margin-top: 10px; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }

.popular-tabs {
  display: flex;
  gap: 2px;
  padding: 6px 6px 0;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: thin;
}

.popular-tab {
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  padding: 7px 12px;
  border: 1px solid transparent;
  border-bottom: 0;
  border-radius: var(--radius-small) var(--radius-small) 0 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
  margin-bottom: -1px;
}

.popular-tab:hover { color: var(--text); }
.popular-tab[aria-selected="true"] { background: var(--surface); border-color: var(--border); color: var(--accent); }

.popular-panel { padding: 12px; display: grid; gap: 8px; }
.popular-panel .chips { margin: 0; gap: 0; }

.preset {
  font: inherit;
  font-size: 13px;
  font-family: var(--mono);
  padding: 3px 10px;
  margin: 0 6px 6px 0;
  border-radius: 999px;
  border: 1px dashed var(--border-strong);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}

.preset:hover { border-color: var(--accent); }
.preset[aria-pressed="true"] { border-style: solid; border-color: var(--accent); background: var(--accent-soft); }

/* suggestions under a package box */

.field { position: relative; }

.suggest {
  position: absolute;
  z-index: 20;
  margin: 0;
  padding: 4px 0;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-small);
  box-shadow: 0 8px 24px rgba(16, 24, 40, 0.16);
  max-width: calc(100vw - 32px);
}

.suggest-row, .suggest-note {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  font-size: 13.5px;
  min-width: 0;
}

.suggest-row { cursor: pointer; }
.suggest-row[aria-selected="true"] { background: var(--accent-soft); }
.suggest-note { color: var(--muted); }
.suggest-name { font-family: var(--mono); font-size: 13px; font-weight: 600; white-space: nowrap; flex: none; max-width: 50%; overflow: hidden; text-overflow: ellipsis; }
.suggest-version { font-family: var(--mono); font-size: 12px; color: var(--muted); white-space: nowrap; flex: none; }
.suggest-summary { flex: 1; min-width: 0; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.suggest-pop, .suggest-added { flex: none; font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.suggest-added { color: var(--ok); }
.suggest-build { flex: none; font-size: 11.5px; font-weight: 600; padding: 1px 6px; border-radius: 999px; }
.suggest-build.cuda { background: var(--warn-soft); color: var(--warn); }
.suggest-build.cpu { background: var(--surface-2); color: var(--muted); }

@media (max-width: 640px) {
  .suggest-version { display: none; }
}

/* buttons */

.button {
  font: inherit;
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius-small);
  padding: 8px 14px;
  cursor: pointer;
  border: 1px solid transparent;
  line-height: 1.3;
}

.button.primary { background: var(--accent); color: var(--accent-text); }
.button.primary:hover { background: var(--accent-hover); }
.button.primary:disabled { opacity: 0.45; cursor: not-allowed; }
.button.secondary { background: var(--surface); color: var(--accent); border-color: var(--accent); }
.button.secondary:hover { background: var(--accent-soft); }
.button.ghost { background: transparent; color: var(--text); border-color: var(--border-strong); }
.button.ghost:hover { background: var(--surface-2); }
.button.small { padding: 4px 10px; font-size: 13px; }
.button.wide { width: 100%; padding: 11px 14px; font-size: 15px; }
.button.link { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; font-weight: 500; }

/* advanced */

.advanced summary { cursor: pointer; list-style: none; }
.advanced summary::-webkit-details-marker { display: none; }
.advanced summary h2 { margin: 0; }
.advanced summary h2::after { content: "Show"; margin-left: auto; font-size: 13px; font-weight: 600; color: var(--accent); }
.advanced[open] summary h2::after { content: "Hide"; }
.advanced[open] summary { margin-bottom: 14px; }

/* side panel */

.panel { position: sticky; top: 16px; min-width: 0; }
@media (max-width: 980px) { .panel { position: static; } }

.panel-inner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  display: grid;
  gap: 12px;
  max-height: calc(100vh - 32px);
  overflow: auto;
}

@media (max-width: 980px) { .panel-inner { max-height: none; } }

.panel h2 { margin: 0; font-size: 18px; }
.panel-file { margin: 0; color: var(--muted); font-size: 14px; }

.repo-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }

.repo-list li {
  display: grid;
  gap: 2px;
  padding: 8px 10px;
  border-radius: var(--radius-small);
  background: var(--surface-2);
  font-size: 13px;
}

.repo-list .repo-name { font-family: var(--mono); word-break: break-all; }
.repo-list .repo-state { color: var(--muted); font-size: 12.5px; }
.repo-list .repo-state.exists { color: var(--warn); }

.messages { display: grid; gap: 6px; }
.messages:empty { display: none; }

.message { padding: 8px 10px; border-radius: var(--radius-small); font-size: 13.5px; }
.message.error { background: var(--danger-soft); color: var(--danger); }
.message.warning { background: var(--warn-soft); color: var(--warn); }
.message.ok { background: var(--ok-soft); color: var(--ok); }

.result { padding: 12px; border-radius: var(--radius-small); background: var(--ok-soft); font-size: 14px; }
.result.error { background: var(--danger-soft); color: var(--danger); }
.result p { margin: 0 0 6px; }
.result p:last-child { margin-bottom: 0; }
.result ol { margin: 6px 0 0; padding-left: 20px; }

/* a button that reads as a link, inside text */
.link-button {
  border: 0;
  padding: 0;
  background: none;
  color: var(--accent);
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
}

.yaml-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.yaml-head h3 { margin: 0; font-size: 14px; }
.yaml-actions { display: flex; gap: 6px; }

.code {
  margin: 0;
  padding: 12px;
  border-radius: var(--radius-small);
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.5;
  overflow: auto;
  max-height: 420px;
  white-space: pre;
}

/* dialogs */

.dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  width: min(640px, calc(100vw - 32px));
  background: var(--surface);
  color: var(--text);
}

.dialog::backdrop { background: rgba(8, 12, 16, 0.55); }
.dialog-body { padding: 20px; display: grid; gap: 12px; }
.dialog-body h2 { margin: 0; font-size: 18px; }
.dialog-body p { margin: 0; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }

.site-footer { color: var(--muted); font-size: 13px; padding-bottom: 32px; }
.site-footer p { max-width: 90ch; }

[hidden] { display: none !important; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}