:root {
  --gutter: clamp(20px, 4vw, 44px);
  --sans: "Segoe UI", "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", system-ui, sans-serif;
  --mono: ui-monospace, Consolas, "Cascadia Mono", "SFMono-Regular", Menlo, monospace;
  color-scheme: dark;
  --bg: #191a18;
  --panel: #20211e;
  --ink: #eee9df;
  --muted: #aaa99e;
  --faint: #82837a;
  --line: #383a33;
  --accent: #c78462;
  --accent-strong: #e0a17e;
  --code: #2a2b25;
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #e9e7df;
  --panel: #f4f1e9;
  --ink: #272923;
  --muted: #55574f;
  --faint: #62645b;
  --line: #cbc9bf;
  --accent: #98583e;
  --accent-strong: #854a33;
  --code: #e4e1d8;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 3px;
}

/* 頂欄 */

.topbar {
  border-bottom: 1px solid var(--line);
}

.bar-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--gutter);
  min-height: 62px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.identity {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 15.5px;
  font-weight: 600;
  text-decoration: none;
  flex: none;
}

.identity-mark {
  display: block;
  width: 34px;
  height: 34px;
}

.sources {
  margin-left: auto;
  min-width: 0;
}

.source-list {
  display: flex;
  align-items: stretch;
  gap: 22px;
}

.source {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 0 8px;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
}

.source:hover {
  color: var(--ink);
}

.source[aria-current="page"] {
  border-bottom-color: var(--accent);
  color: var(--ink);
  font-weight: 600;
}

.source-kind {
  color: var(--faint);
  font-size: 12px;
  font-weight: 400;
}

.theme-toggle {
  flex: none;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  transition: border-color .15s, color .15s;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

/* 內容欄 */

.sheet {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.intro {
  padding: 34px 0 18px;
}

.intro h1 {
  margin: 0;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 700;
}

.lede {
  margin: 9px 0 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.lede[hidden] {
  display: none;
}

/* 工具列 */

.toolbar {
  position: sticky;
  top: 0;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(200px, 284px) minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px 24px;
  margin-inline: calc(-1 * var(--gutter));
  padding: 13px var(--gutter);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.search {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--muted);
  transition: border-color .15s;
}

.search:focus-within {
  border-color: var(--accent);
}

.search svg {
  flex: none;
}

.search input {
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  outline: none;
}

.search input::placeholder {
  color: var(--faint);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px 18px;
  min-width: 0;
}

.filter {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 4px 0 6px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--muted);
  font: inherit;
  font-size: 13.5px;
  line-height: 1.4;
  white-space: nowrap;
  cursor: pointer;
  transition: color .15s;
}

.filter:hover {
  color: var(--ink);
}

.filter[aria-pressed="true"] {
  border-bottom-color: var(--accent);
  color: var(--ink);
  font-weight: 600;
}

.filter .n {
  color: var(--faint);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
}

.filter[aria-pressed="true"] .n {
  color: var(--muted);
}

.result-count {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  justify-self: end;
}

/* 指令列表 */

.section {
  margin-top: 30px;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-top: 11px;
  border-top: 2px solid var(--line);
}

.section-head h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.section-head .n {
  color: var(--faint);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

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

.cmd {
  display: grid;
  grid-template-columns: 186px minmax(0, 1fr) 236px;
  grid-template-areas: "id main specs";
  column-gap: 26px;
  padding: 17px 0 18px;
  border-bottom: 1px solid var(--line);
}

.cmd-id {
  grid-area: id;
  min-width: 0;
}

.cmd-main {
  grid-area: main;
  min-width: 0;
}

.cmd-name {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.cmd-name code {
  font-family: var(--mono);
  font-size: 1em;
  font-weight: 600;
  color: var(--accent-strong);
}

.alias,
.from {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.alias code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink);
}

.desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.usage {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  margin: 9px 0 0;
  font-size: 13.5px;
}

.usage .label {
  color: var(--muted);
  font-size: 13px;
}

.usage code {
  font-family: var(--mono);
  font-size: 13.5px;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--code);
  color: var(--ink);
}

.specs {
  grid-area: specs;
  margin: 0;
  display: grid;
  gap: 5px;
  align-content: start;
}

.specs>div {
  display: grid;
  grid-template-columns: 3.7em minmax(0, 1fr);
  gap: 8px;
  font-size: 13px;
  line-height: 1.6;
}

.specs dt {
  margin: 0;
  color: var(--muted);
}

.specs dd {
  margin: 0;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.empty {
  margin: 0;
  padding: 34px 0;
  color: var(--muted);
  font-size: 15px;
}

.link-btn {
  margin-left: 8px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--accent-strong);
  font: inherit;
  font-size: 15px;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

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

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 16px;
  margin-top: 42px;
  padding: 16px 0 46px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

footer b {
  color: var(--ink);
  font-weight: 600;
}

/* 窄螢幕 */

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

  .search {
    grid-column: 1;
    grid-row: 1;
    max-width: 360px;
  }

  .result-count {
    grid-column: 2;
    grid-row: 1;
  }

  .filters {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .cmd {
    grid-template-columns: 172px minmax(0, 1fr);
    grid-template-areas:
      "id main"
      ". specs";
    column-gap: 22px;
    row-gap: 11px;
  }

  .specs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 20px;
  }

  .specs>div {
    display: flex;
    gap: 7px;
    grid-template-columns: none;
  }
}

@media (max-width: 720px) {
  .bar-inner {
    flex-wrap: wrap;
    gap: 14px;
    padding-top: 10px;
  }

  .identity {
    order: 1;
  }

  .theme-toggle {
    order: 2;
    margin-left: auto;
  }

  .sources {
    order: 3;
    flex-basis: 100%;
    margin-left: 0;
  }

  .source-list {
    flex-wrap: wrap;
    gap: 4px 20px;
    padding-bottom: 8px;
  }

  .intro {
    padding: 24px 0 16px;
  }
}

@media (max-width: 680px) {
  .filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding: 5px 0;
    scrollbar-width: thin;
  }

  .toolbar {
    gap: 6px 16px;
    padding-block: 8px;
  }

  .cmd {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "id"
      "main"
      "specs";
    row-gap: 8px;
    padding: 15px 0 16px;
  }

  .specs {
    margin-top: 2px;
  }

  .section {
    margin-top: 24px;
  }

  footer {
    padding-bottom: 36px;
  }
}

@media (max-width: 380px) {
  .specs>div {
    display: grid;
    grid-template-columns: 3.7em minmax(0, 1fr);
    gap: 8px;
  }
}

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