@layer reset, base, layout, components, utilities;

@view-transition { navigation: auto; }

:root {
  color-scheme: dark;
  --surface: #0d1117;
  --panel: #161b22;
  --panel-strong: #21262d;
  --text: #c9d1d9;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent-contrast: #0d1117;
  --success: #3fb950;
  --attention: #d29922;
  --danger: #f85149;
  --done: #bc8cff;
  --border: #30363d;
  --radius: 1.1rem;
  --shadow: 0 1rem 3rem rgba(1, 4, 9, 0.65);
  --measure: min(72rem, 100% - 2.5rem);
  --space: clamp(1rem, 0.6rem + 1.6vw, 1.75rem);
  scrollbar-color: var(--accent) transparent;
  accent-color: var(--accent);
}

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  body, h1, h2, h3, h4, p, figure, ul { margin: 0; }
  ul { padding: 0; list-style: none; }
  :focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 0.35rem; }
  img { max-inline-size: 100%; block-size: auto; }
  button, input { font: inherit; }
}

@layer base {
  body {
    font-family: Consolas, "Cascadia Code", "Yu Gothic UI", "Meiryo", monospace;
    background:
      radial-gradient(80rem 45rem at 100% -10%, rgba(88, 166, 255, 0.2), transparent 58%),
      radial-gradient(65rem 38rem at 0% 0%, rgba(188, 140, 255, 0.16), transparent 56%),
      radial-gradient(55rem 32rem at 50% 120%, rgba(63, 185, 80, 0.1), transparent 62%),
      var(--surface);
    background-attachment: fixed;
    color: var(--text);
    line-height: 1.7;
    text-wrap: pretty;
    -webkit-text-size-adjust: 100%;
    min-block-size: 100svb;
    display: flex;
    flex-direction: column;
  }
  a { color: var(--accent); text-underline-offset: 0.2em; }
  a:hover:not(:where(.brand, .card a)) { text-decoration-thickness: 2px; }
  h1, h2, h3 { text-wrap: balance; line-height: 1.15; }
  :where(h1, h2, h3) { letter-spacing: -0.01em; }
  h1 { color: #f0f6fc; }
  h2 { color: var(--done); }
  h3 { color: var(--success); }
  h4 { color: var(--attention); }
  pre, code { font-family: Consolas, "Cascadia Code", monospace; }
  pre, code { background: var(--panel-strong); border-radius: 0.5rem; color: #f0f6fc; }
  code { padding-inline: 0.3em; padding-block: 0.1em; }
  pre { overflow-x: auto; padding: 1rem; border: 1px solid var(--border); }
  pre code { background: none; padding: 0; }
}

@layer layout {
  .site-header, main, .site-footer { inline-size: var(--measure); margin-inline: auto; }
  main { flex: 1; }
  .site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    padding-block: 1.25rem;
    position: sticky;
    inset-block-start: 0;
    z-index: 1;
    backdrop-filter: blur(0.5rem);
  }
  .site-nav-shell {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.75rem;
    flex: 1 1 auto;
    min-inline-size: 0;
    margin-inline-start: auto;
    position: relative;
  }
  .site-nav {
    position: absolute;
    inset-block-start: calc(100% + 0.65rem);
    inset-inline-end: 0;
    display: none;
    flex-direction: column;
    gap: 0.35rem;
    min-inline-size: min(18rem, calc(100vw - 2rem));
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: rgba(22, 27, 34, 0.96);
    box-shadow: var(--shadow);
  }
  .site-nav.site-nav-open { display: flex; }
  .site-footer { padding-block: 3rem 4rem; color: var(--muted); }
  section { margin-block: clamp(2rem, 5vw, 3.5rem); }
}

@layer components {
  .brand { font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
  .brand::before { content: "plot your story / "; color: var(--accent); }
  .site-home-link,
  .site-menu-toggle { display: inline-flex; }
  .site-nav a {
    color: var(--muted);
    text-decoration: none;
    padding: 0.5rem 0.85rem;
    border-radius: 999px;
    min-block-size: 2.75rem;
    display: inline-flex;
    align-items: center;
    inline-size: 100%;
    justify-content: flex-start;
    transition: background-color 0.2s, color 0.2s;
  }
  .site-nav a:hover,
  .site-nav a:focus-visible { color: #f0f6fc; background: rgba(88, 166, 255, 0.14); }
  .site-nav-home { display: none; }
  .site-icon-button {
    inline-size: 2.75rem;
    block-size: 2.75rem;
    justify-content: center;
    align-items: center;
    padding: 0;
    color: #f0f6fc;
    border: 1px solid rgba(88, 166, 255, 0.34);
    background: rgba(88, 166, 255, 0.1);
    border-radius: 999px;
    text-decoration: none;
    display: inline-flex;
    appearance: none;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
  }
  .site-icon-button:hover,
  .site-icon-button:focus-visible {
    color: #f0f6fc;
    background: rgba(88, 166, 255, 0.2);
    border-color: rgba(88, 166, 255, 0.5);
  }
  .site-icon-button svg {
    inline-size: 1.25rem;
    block-size: 1.25rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  .visually-hidden {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    clip-path: inset(50%);
  }

  .surface, .hero, .card, .source, .post, .post-toc, .archive-panel {
    background: rgba(22, 27, 34, 0.88);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--space);
    box-shadow: var(--shadow);
  }

  .hero {
    padding: clamp(1.75rem, 4vw, 3rem);
    background:
      linear-gradient(135deg, rgba(88, 166, 255, 0.18), transparent 42%),
      linear-gradient(225deg, rgba(188, 140, 255, 0.16), transparent 52%),
      rgba(22, 27, 34, 0.92);
  }
  .hero h1 { font-size: clamp(2.25rem, 6vw, 4.25rem); line-height: 1.05; margin-block: 0.4rem 0.75rem; }
  .eyebrow { color: var(--success); font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.8rem; }

  .browser-search {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.5rem;
    min-block-size: 3rem;
    padding: 0.35rem 0.4rem 0.35rem 0.8rem;
    border: 1px solid rgba(88, 166, 255, 0.38);
    border-radius: 999px;
    background:
      linear-gradient(180deg, rgba(33, 38, 45, 0.96), rgba(13, 17, 23, 0.92)),
      rgba(13, 17, 23, 0.92);
    box-shadow: inset 0 1px 0 rgba(240, 246, 252, 0.08), 0 1rem 2.5rem rgba(1, 4, 9, 0.32);
  }
  .browser-search input {
    inline-size: 100%;
    min-inline-size: 0;
    border: 0;
    color: #f0f6fc;
    background: transparent;
    outline: 0;
  }
  .browser-search input::placeholder { color: var(--muted); }
  .browser-search button {
    border: 0;
    padding: 0.2rem;
    color: var(--accent);
    background: transparent;
    text-decoration: none;
    line-height: 1;
    cursor: pointer;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    transition: color 0.2s;
  }
  .browser-search:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.25), inset 0 1px 0 rgba(240, 246, 252, 0.08);
  }
  .browser-search button:hover,
  .browser-search button:focus-visible {
    color: #f0f6fc;
  }
  .browser-search button svg {
    inline-size: 1.1rem;
    block-size: 1.1rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
  }
  .site-header-search {
    display: grid;
    inline-size: 100%;
    min-inline-size: 0;
    margin: 0;
  }

  .post-list, .source-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr));
    gap: 1rem;
    container-type: inline-size;
  }
  .featured-post-list {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
  .tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  .tag-link {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.7rem 0.95rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(22, 27, 34, 0.82);
    color: #f0f6fc;
    text-decoration: none;
    transition: border-color 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
  }
  .tag-link span {
    color: var(--done);
    font-weight: 700;
  }
  .tag-link small { color: var(--muted); }
  .tag-link:hover,
  .tag-link:focus-visible {
    border-color: var(--accent);
    background: rgba(22, 27, 34, 0.96);
    transform: translateY(-1px);
  }
  .archive-post-list {
    display: grid;
    gap: 0.65rem;
  }

  .card {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  }
  .card:has(a:hover), .card:has(a:focus-visible) { transform: translateY(-3px); border-color: var(--accent); }
  .card h3 { margin: 0; font-size: 1.2rem; }
  .card a { color: #f0f6fc; text-decoration: none; }
  .card a::after { content: ""; position: absolute; inset: 0; }
  .card { position: relative; }
  .card time, .card p, .source small { color: var(--muted); }
  .card time { font-variant-numeric: tabular-nums; font-size: 0.85rem; }
  .featured-card {
    display: grid;
    grid-template-columns: minmax(16rem, 22rem) minmax(0, 1fr);
    grid-template-areas:
      "time summary"
      "title summary";
    gap: 0.75rem 1.75rem;
    align-items: start;
    padding: clamp(1.35rem, 3vw, 2rem);
    background:
      linear-gradient(135deg, rgba(88, 166, 255, 0.14), transparent 40%),
      linear-gradient(225deg, rgba(188, 140, 255, 0.12), transparent 58%),
      rgba(22, 27, 34, 0.9);
  }
  .featured-card time { grid-area: time; }
  .featured-card h3 { grid-area: title; font-size: clamp(1.5rem, 3.5vw, 2.3rem); }
  .featured-card p {
    grid-area: summary;
    margin: 0;
    font-size: 1rem;
    line-height: 1.75;
  }
  .archive-row {
    display: grid;
    grid-template-columns: minmax(12rem, 15rem) minmax(7rem, 10rem) minmax(0, 1fr);
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: rgba(22, 27, 34, 0.72);
    transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
  }
  .archive-row:hover,
  .archive-row:focus-within {
    border-color: rgba(88, 166, 255, 0.42);
    background: rgba(22, 27, 34, 0.88);
    transform: translateY(-1px);
  }
  .archive-row time,
  .archive-row p {
    color: var(--muted);
    margin: 0;
    font-size: 0.92rem;
  }
  .archive-row time {
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
  }
  .archive-row h3 {
    margin: 0;
    min-inline-size: 0;
    font-size: 1rem;
  }
  .archive-row a {
    color: #f0f6fc;
    text-decoration: none;
  }
  .archive-row a:hover,
  .archive-row a:focus-visible {
    color: var(--accent);
  }
  .archive-row h3,
  .archive-row p {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .source { display: grid; gap: 0.25rem; color: var(--text); text-decoration: none; }
  .source span { color: var(--success); font-weight: 600; }

  .archive-panels {
    display: grid;
    gap: 1rem;
  }
  .archive-panel {
    overflow: clip;
  }
  .archive-panel summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    color: var(--done);
    font-weight: 700;
    list-style: none;
  }
  .archive-panel summary::-webkit-details-marker { display: none; }
  .archive-panel summary::before {
    content: "▶";
    color: var(--accent);
    transition: transform 0.2s ease;
  }
  .archive-panel[open] summary::before { transform: rotate(90deg); }
  .archive-panel summary span { flex: 1; }
  .archive-panel summary small { color: var(--muted); font-weight: 400; }
  .archive-panel .archive-post-list {
    margin-block-start: 1rem;
  }

  .post-layout {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(16rem, 3fr);
    gap: clamp(1rem, 3vw, 2rem);
    align-items: start;
    margin-block: 2rem;
  }
  .post { margin-block: 0; }
  .post-title { font-size: clamp(1.9rem, 4.5vw, 3.25rem); }
  .post .summary { color: var(--muted); font-size: 1.1rem; }
  .post :where(h2, h3) { scroll-margin-top: 6.5rem; }
  .post :where(h2, h3) { margin-block-start: 2rem; }
  .post h4 {
    margin-block: 1.35rem 0.35rem;
    font-size: 1rem;
    line-height: 1.45;
  }
  .post h4 a {
    color: var(--accent);
    text-decoration: none;
    border-block-end: 1px solid rgba(88, 166, 255, 0.45);
  }
  .post h4 a:hover,
  .post h4 a:focus-visible {
    color: #79c0ff;
    border-block-end-color: currentColor;
  }
  .post :where(p, ul, ol) { margin-block: 1rem; }
  .post a { word-break: break-word; }
  .post-toc {
    position: sticky;
    inset-block-start: 5.5rem;
    max-block-size: calc(100svh - 7rem);
    overflow: auto;
  }
  .post-toc h2 {
    margin: 0 0 1rem;
    color: #f0f6fc;
    font-size: 1.2rem;
  }
  .toc-nav {
    position: relative;
  }
  .toc-track,
  .toc-indicator {
    position: absolute;
    inset-inline-start: calc(0.75rem - 1px);
    inline-size: 2px;
    border-radius: 999px;
    pointer-events: none;
  }
  .toc-track {
    inset-block: 0.85rem 0.85rem;
    background: rgba(88, 166, 255, 0.2);
  }
  .toc-indicator {
    inset-block-start: 0.85rem;
    block-size: 2.2rem;
    background: linear-gradient(180deg, #58a6ff, #1f6feb);
    box-shadow: 0 0 0 1px rgba(88, 166, 255, 0.16), 0 0 16px rgba(31, 111, 235, 0.3);
    transition: transform 0.2s ease, block-size 0.2s ease, opacity 0.2s ease;
    opacity: 0;
  }
  .toc-list {
    display: grid;
    gap: 0.55rem;
    margin: 0;
    padding: 0 0 0 1.75rem;
    list-style: none;
  }
  .toc-list li {
    position: relative;
  }
  .toc-list li::before {
    content: "";
    position: absolute;
    inset-inline-start: -1.25rem;
    inset-block-start: 0.6rem;
    inline-size: 0.5rem;
    block-size: 0.5rem;
    border-radius: 50%;
    background: rgba(88, 166, 255, 0.8);
    box-shadow: 0 0 0 0.1rem rgba(31, 111, 235, 0.16);
    transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
  }
  .post-toc a {
    display: block;
    color: var(--muted);
    text-decoration: none;
    padding-inline-start: 0.35rem;
    transition: color 0.2s ease, transform 0.2s ease;
  }
  .toc-depth-1 a {
    color: var(--accent);
    font-weight: 700;
  }
  .toc-depth-2 a {
    color: var(--text);
  }
  .toc-link-active {
    color: #f0f6fc !important;
    transform: translateX(0.15rem);
  }
  .toc-list li.toc-item-active::before {
    background: #58a6ff;
    box-shadow: 0 0 0 0.16rem rgba(31, 111, 235, 0.3), 0 0 16px rgba(88, 166, 255, 0.3);
    transform: scale(1.15);
  }
  .post-toc a:hover,
  .post-toc a:focus-visible {
    color: #f0f6fc;
    transform: translateX(0.15rem);
  }
  .toc-depth-2 { padding-inline-start: 0.9rem; }
  .toc-depth-3 { padding-inline-start: 1.8rem; }

  .tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-block: 1rem; }
  .tags span {
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.25rem 0.7rem;
    color: var(--done);
    background: rgba(188, 140, 255, 0.1);
    font-size: 0.85rem;
  }

  .search-box { margin-block-start: 1.25rem; }
  #search-input {
    inline-size: 100%;
    font: inherit;
    font-size: 1.1rem;
    padding: 0.85rem 1.1rem;
    min-block-size: 3rem;
    color: var(--text);
    background: rgba(22, 27, 34, 0.9);
    border: 1px solid var(--border);
    border-radius: 999px;
    transition: border-color 0.2s, box-shadow 0.2s;
  }
  #search-input:focus-visible {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.3);
  }
  .search-scope {
    color: var(--done);
    font-size: 0.92rem;
    margin-block: 1rem 0 0.35rem;
  }
  .search-status { color: var(--muted); font-size: 0.9rem; margin-block: 1rem; }
  #search-app { margin-block-start: 1.5rem; }
  .release-note-list {
    display: grid;
    gap: 1.25rem;
  }
  .release-note {
    display: grid;
    gap: 1rem;
  }
  .release-note-header {
    display: grid;
    gap: 0.45rem;
  }
  .release-note-meta {
    color: var(--muted);
    font-size: 0.9rem;
  }
  .card mark {
    background: rgba(210, 153, 34, 0.35);
    color: #f0f6fc;
    border-radius: 0.2rem;
    padding-inline: 0.1em;
  }
  .search-empty { color: var(--muted); }
}

@media (min-width: 34rem) {
  .hero { padding-inline: clamp(2rem, 5vw, 3.5rem); }
}

@media (max-width: 40rem) {
  .site-header {
    padding-block: 0.9rem;
  }
  .site-header .brand {
    display: none;
  }
  .site-nav-shell {
    inline-size: 100%;
    gap: 0.65rem;
  }
  .site-home-link,
  .site-menu-toggle,
  .site-header-search {
    display: inline-flex;
  }
  .site-header-search {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    min-block-size: 2.75rem;
    padding: 0.25rem 0.35rem 0.25rem 0.8rem;
    gap: 0.35rem;
  }
  .site-header-search input {
    font-size: 0.95rem;
  }
  .site-header-search button {
    padding: 0;
  }
  .site-menu-toggle {
    justify-self: end;
  }
  .site-nav {
    inline-size: 100%;
    grid-column: 1 / -1;
    min-inline-size: 0;
    margin-block-start: 0.65rem;
    position: static;
    inset-block-start: auto;
    inset-inline-end: auto;
  }
  .site-nav.site-nav-open {
    display: flex;
  }
  .site-nav a { font-size: 0.95rem; }
}

@media (max-width: 54rem) {
  .archive-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
    align-items: start;
  }
  .archive-row h3,
  .archive-row p {
    white-space: normal;
  }
  .featured-card {
    grid-template-columns: 1fr;
    grid-template-areas:
      "time"
      "title"
      "summary";
  }
  .post-layout {
    grid-template-columns: 1fr;
  }
  .post-toc {
    position: static;
    max-block-size: none;
    order: -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  @view-transition { navigation: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

:root {
  --accent: #d69be6;
  --accent-contrast: #1b1b1b;
  --measure: min(86rem, 100% - 4rem);
}
.hero { border-color: rgba(214, 155, 230, 0.45); }
.site-header { border-bottom-color: rgba(214, 155, 230, 0.22); }
.site-header-search,
.site-nav a[href$="/archives.html"],
.site-nav a[href$="/tags.html"],
.site-nav a[href$="/search.html"],
.rss-nav-link {
  display: none;
}
.post > .eyebrow,
.post > .tags {
  display: none;
}
.post-layout {
  inline-size: 100%;
  max-width: none;
}
.docs-home {
  max-width: 62rem;
  margin: 0 auto;
}
.docs-home .hero {
  margin-bottom: 1.5rem;
}
.docs-home-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.docs-home-actions .button-link {
  margin: 0;
}
.docs-section {
  margin-top: 2rem;
}
.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.docs-card {
  border: 1px solid rgba(214, 155, 230, 0.22);
  border-radius: 0.75rem;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.03);
}
.docs-card h3 {
  margin-top: 0;
}
.docs-card p:last-child {
  margin-bottom: 0;
}
.docs-card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.docs-card-links a {
  font-weight: 600;
}