// heartwood — palette evokes the dense red-brown center of a tree.

:root {
  --bg:        #1a1410;
  --surface:   #221a14;
  --surface-2: #2a2018;
  --border:    #3d2f24;
  --text:      #e8dccc;
  --text-mute: #9c8a72;
  --accent:    #b8543a; // heartwood red
  --accent-2:  #c4a574; // sap gold
  --green:     #6b9e78;
  --code-bg:   #15100c;
  --add-bg:    #1f2e1f;
  --add-fg:    #95c895;
  --del-bg:    #2e1f1f;
  --del-fg:    #d08585;
  --hunk-fg:   #8aa9c4;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --prose: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--prose);
  font-size: 15px;
  line-height: 1.55;
}

// Sticky footer: body fills viewport, main takes the slack so the
// footer-bar pins to the bottom on short pages (empty repo list, 404).
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1 0 auto; }

a {
  color: var(--accent-2);
  text-decoration: none;

  &:hover { text-decoration: underline; }
}

code, pre, .sha, .clone-box input {
  font-family: var(--mono);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

// --- topbar ---
.topbar {
  position: relative;
  background: linear-gradient(180deg, var(--surface-2) 0%, var(--surface) 100%);
  border-bottom: 1px solid var(--border);
  padding: 1.15rem 0;

  // The outer accent stripe is a horizontal cross-section of the brand
  // mark: heartwood-red core, sap-gold middle ring, green outer ring.
  // Reads as a tree-ring slice across the top of every page.
  &::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 2px;
    background: linear-gradient(
      90deg,
      var(--accent) 0%,
      var(--accent-2) 50%,
      var(--green) 100%
    );
    opacity: 0.75;
  }

  &__row {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
  }

  // 1px vertical hairline between brand and tagline, like a path-component
  // separator. Hidden on narrow screens where the tagline drops out anyway.
  &__divider {
    width: 1px;
    height: 1.4rem;
    background: var(--border);

    @media (max-width: 540px) { display: none; }
  }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1.15rem;

  &:hover {
    text-decoration: none;
    color: var(--accent-2);
  }
}

.brand-mark {
  width: 32px;
  height: 32px;

  // Each ring gets a slow color tween so hovering the brand feels like the
  // wood warming under a thumb. Strokes shift one step inward toward red.
  circle { transition: stroke 350ms ease, fill 350ms ease; }
}

.brand:hover .brand-mark {
  .brand-mark__r1   { stroke: var(--accent-2); }
  .brand-mark__r2   { stroke: var(--accent-2); }
  .brand-mark__r3   { stroke: var(--accent);  }
  .brand-mark__core { fill:   var(--accent-2); }
}

.brand-text { letter-spacing: 0.03em; }

.tagline {
  color: var(--text-mute);
  font-family: var(--mono);
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.02em;

  @media (max-width: 540px) { display: none; }
}

.topnav {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;

  &__link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-mute);
    font-family: var(--mono);
    font-size: 0.85rem;
    text-transform: lowercase;
    letter-spacing: 0.04em;
    padding: 0.35rem 0.75rem;
    border: 1px solid transparent;
    border-radius: 3px;
    transition: color 150ms ease, border-color 150ms ease, background 150ms ease;

    &:hover {
      color: var(--text);
      border-color: var(--border);
      background: var(--surface-2);
      text-decoration: none;
    }

    // Current-page state: a subtle outlined "tab" with the accent dot lit.
    &.is-active {
      color: var(--text);
      border-color: var(--border);
      background: var(--surface-2);

      .topnav__dot {
        background: var(--accent);
        box-shadow: 0 0 0 2px rgba(184, 84, 58, 0.15);
      }
    }
  }

  &__dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-mute);
    opacity: 0.6;
  }
}

// --- breadcrumbs ---
.breadcrumbs {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text-mute);
  padding: 0.85rem 0;

  strong { color: var(--text); font-weight: 600; }

  // Explicit separator span so we don't depend on whitespace stripping in
  // the templates. Each path component is its own anchor; the slashes are
  // visual-only and get a touch of horizontal margin.
  &__sep {
    margin: 0 0.35rem;
    color: var(--text-mute);
    opacity: 0.6;
  }

  &__ref {
    margin-left: 0.75rem;
    color: var(--accent-2);
  }
}

main { padding: 3rem 0 4rem; }

// --- hero / index ---
.hero {
  margin-bottom: 2.5rem;

  h1 {
    font-family: var(--mono);
    font-size: 2rem;
    margin: 0 0 0.5rem;
    letter-spacing: -0.01em;
  }

  .lede { color: var(--text-mute); margin: 0; }
}

.empty {
  color: var(--text-mute);
  font-style: italic;
}

.repo-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.repo-row {
  background: var(--surface);
  padding: 1rem 1.25rem;

  &:hover { background: var(--surface-2); }

  &__head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
  }

  &__name {
    font-family: var(--mono);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--accent-2);
  }

  &__age {
    color: var(--text-mute);
    font-size: 0.85rem;
    white-space: nowrap;
  }

  &__desc {
    margin: 0.35rem 0 0;
    color: var(--text);
  }

  &__last {
    margin: 0.35rem 0 0;
    color: var(--text-mute);
    font-size: 0.88rem;
  }

  &__last-sha {
    font-family: var(--mono);
    color: var(--accent);
    margin-right: 0.4rem;
  }
}

// --- repo head ---
.repo-head {
  margin-bottom: 2rem;

  &__title-row {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    flex-wrap: wrap;

    h1 {
      font-family: var(--mono);
      font-size: 1.75rem;
      margin: 0;
    }
  }

  &__branch {
    background: var(--surface-2);
    color: var(--accent-2);
    border: 1px solid var(--border);
    padding: 0.1rem 0.5rem;
    border-radius: 3px;
    font-family: var(--mono);
    font-size: 0.85rem;
  }

  &__desc {
    color: var(--text-mute);
    margin: 0.5rem 0 1rem;
  }
}

.clone-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
  margin-bottom: 1rem;
  max-width: 640px;

  label {
    color: var(--text-mute);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  input {
    flex: 1;
    background: transparent;
    border: 0;
    color: var(--text);
    font-size: 0.9rem;
    outline: none;
    padding: 0.25rem 0;
  }
}

.repo-nav {
  display: flex;
  gap: 1.25rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  font-family: var(--mono);
  font-size: 0.92rem;

  a {
    color: var(--text-mute);
    &:hover { color: var(--accent-2); text-decoration: none; }
  }
}

// --- two column layout (overview) ---
.two-col {
  display: grid;
  // `minmax(0, ...)` is load-bearing: CSS grid items default to min-width:
  // auto, so an unwrappable child (e.g. a wide <pre> inside the README)
  // would force the main column wider than its 2fr share and crush the
  // sidebar. Capping the min at 0 makes the columns respect the fr ratio
  // regardless of content width; overflow scrolls within the child.
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 2rem;

  @media (max-width: 760px) {
    grid-template-columns: minmax(0, 1fr);
  }
}

.col-main { min-width: 0; }
.col-side { min-width: 0; }

.side-h {
  font-family: var(--mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-mute);
  margin: 0 0 0.5rem;
}

.commit-list {
  list-style: none;
  margin: 0;
  padding: 0;

  li {
    border-bottom: 1px dashed var(--border);
    padding: 0.55rem 0;
    font-size: 0.92rem;
  }

  .sha {
    color: var(--accent);
    margin-right: 0.4rem;
  }

  .summary { display: block; color: var(--text); }
  .meta { color: var(--text-mute); font-size: 0.82rem; }
}

// --- readme ---
.readme {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem 2rem;

  h1, h2, h3, h4 {
    font-family: var(--mono);
    letter-spacing: -0.01em;
  }
  h1 { font-size: 1.7rem; margin-top: 0; }
  h2 { font-size: 1.35rem; border-bottom: 1px solid var(--border); padding-bottom: 0.3rem; }
  h3 { font-size: 1.1rem; }

  p, ul, ol { line-height: 1.65; }
  code { background: var(--code-bg); padding: 0.1rem 0.35rem; border-radius: 3px; font-size: 0.92em; }
  pre {
    background: var(--code-bg);
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    code { background: transparent; padding: 0; }
  }
  blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 1rem;
    color: var(--text-mute);
    margin: 1rem 0;
  }
  table {
    border-collapse: collapse;
    margin: 1rem 0;
    th, td {
      border: 1px solid var(--border);
      padding: 0.35rem 0.75rem;
    }
    th { background: var(--surface-2); }
  }
  hr { border: 0; border-top: 1px solid var(--border); }
}

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

.log-row {
  display: flex;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);

  .sha { color: var(--accent); flex-shrink: 0; }
  .summary { margin: 0; }
  .meta { margin: 0; color: var(--text-mute); font-size: 0.85rem; }
}

// --- tree ---
.tree {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.92rem;

  tr { border-bottom: 1px solid var(--border); }
  td { padding: 0.5rem 0.75rem; }

  &__name { width: 100%; }
  &__name--tree a::before { content: ""; color: var(--accent-2); }
  &__name--blob a::before { content: ""; color: var(--text-mute); }
  &__size { color: var(--text-mute); text-align: right; white-space: nowrap; }
}

// --- blob view ---
.blob-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-bottom: 0;
  padding: 0.5rem 0.75rem;
  border-radius: 4px 4px 0 0;
  font-size: 0.85rem;
  color: var(--text-mute);
  font-family: var(--mono);
}

.blob {
  border: 1px solid var(--border);
  border-radius: 0 0 4px 4px;
  overflow-x: auto;
  background: var(--code-bg);

  .hl {
    margin: 0;
    padding: 0.75rem 0;
    font-family: var(--mono);
    font-size: 0.85rem;
    line-height: 1.55;
  }
  .ln {
    display: inline-block;
    width: 4ch;
    padding-right: 1rem;
    text-align: right;
    color: var(--text-mute);
    user-select: none;
    &::before { content: attr(data-n); }
  }
  .l { display: inline; }
}

// --- diff ---
.commit-head {
  margin-bottom: 1.5rem;

  h1 {
    font-family: var(--mono);
    font-size: 1.35rem;
    margin: 0 0 0.5rem;
  }
  .sha { color: var(--accent); }
  .meta { color: var(--text-mute); margin: 0 0 1rem; }
}

.commit-msg {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  border-radius: 4px;
  font-size: 0.9rem;
  white-space: pre-wrap;
  margin: 0;
}

.file-diff {
  margin-top: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;

  &__head {
    background: var(--surface);
    padding: 0.5rem 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--mono);
    font-size: 0.88rem;
  }
}

.status {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  padding: 0.05rem 0.45rem;
  border-radius: 3px;
  letter-spacing: 0.05em;

  &--added { background: rgba(149, 200, 149, 0.15); color: var(--add-fg); }
  &--deleted { background: rgba(208, 133, 133, 0.15); color: var(--del-fg); }
  &--modified { background: var(--surface-2); color: var(--text-mute); }
  &--renamed { background: rgba(196, 165, 116, 0.15); color: var(--accent-2); }
}

.hunk {
  margin: 0;
  padding: 0.5rem 0;
  background: var(--code-bg);
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.35;
  overflow-x: auto;
}

.hunk-hdr {
  display: block;
  padding: 0.15rem 0.75rem;
  color: var(--hunk-fg);
  background: rgba(138, 169, 196, 0.08);
}

.line {
  display: block;
  padding: 0 0.75rem;
  white-space: pre;

  &--add { background: var(--add-bg); color: var(--add-fg);
    &::before { content: "+"; display: inline-block; width: 1.2ch; color: var(--add-fg); opacity: 0.6; }
  }
  &--del { background: var(--del-bg); color: var(--del-fg);
    &::before { content: "-"; display: inline-block; width: 1.2ch; color: var(--del-fg); opacity: 0.6; }
  }
  &--ctx { color: var(--text);
    &::before { content: " "; display: inline-block; width: 1.2ch; }
  }
}

// --- footer ---
.footer {
  position: relative;
  margin-top: 4rem;
  padding: 3.5rem 0 3rem;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
  overflow: hidden;

  &__grid {
    display: grid;
    gap: 2.5rem;
    grid-template-columns: minmax(0, 2.4fr) minmax(0, 1fr) minmax(0, 1fr);
    position: relative;
    z-index: 1;

    @media (max-width: 760px) {
      grid-template-columns: minmax(0, 1fr);
      gap: 2rem;
    }
  }

  &__label {
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-2);
    opacity: 0.7;
    margin-bottom: 0.9rem;
  }

  &__about p {
    color: var(--text-mute);
    font-size: 0.9rem;
    line-height: 1.7;
    margin: 0 0 0.85rem;
    max-width: 56ch;

    a {
      color: var(--text);
      text-decoration: underline;
      text-underline-offset: 2px;
      text-decoration-color: var(--border);

      &:hover { color: var(--accent-2); text-decoration-color: var(--accent-2); }
    }
  }

  &__tagline {
    font-style: italic;
    color: var(--text-mute);
    opacity: 0.75;
  }

  &__col {
    ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    li { margin-bottom: 0.55rem; }

    a {
      color: var(--text-mute);
      font-size: 0.9rem;
      transition: color 150ms ease;

      &:hover { color: var(--accent-2); text-decoration: none; }
    }
  }

  // Tree-rings flourish, echoing the brand mark. Anchored bottom-right,
  // bled off the edge so only an arc is visible. `currentColor` so the
  // hue follows the footer text color and the opacity below sets it.
  &-rings {
    position: absolute;
    right: -120px;
    bottom: -120px;
    width: 460px;
    height: 460px;
    color: var(--accent);
    opacity: 0.07;
    pointer-events: none;
    z-index: 0;
  }
}

// Slim copyright bar, like blog/status/analytics.
.footer-bar {
  background: var(--code-bg);
  border-top: 1px solid var(--border);
  padding: 0.9rem 0;
  color: var(--text-mute);
  font-size: 0.78rem;

  &__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;

    @media (max-width: 480px) {
      flex-direction: column;
      gap: 0.6rem;
      text-align: center;
    }
  }

  &__link {
    display: inline-flex;
    color: var(--text-mute);
    transition: color 150ms ease;

    &:hover { color: var(--accent-2); }
  }
}