// pull: sage restyle of the pull request view (header, subnav, merge box, checks, side panel),
// its files and commits diffs, the timeline cards, and the issue and pull request lists.
// Imported after main.scss, so these rules win on equal specificity. Colour comes from tokens,
// except the merged purple defined once below.

// Merged state: a softened purple that sits beside the sage accent without matching it.
:root {
  --merged: #6b4fa0;
  --merged-soft: #efeaf6;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --merged: #c7b3ee;
    --merged-soft: #2b2440;
  }
}

:root[data-theme="dark"] {
  --merged: #c7b3ee;
  --merged-soft: #2b2440;
}

// Subnav: underline tabs. Scrolls sideways on narrow screens instead of wrapping.

.subnav {
  flex-wrap: nowrap;
  gap: 26px;
  margin: 16px 0 0;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
}

.subnav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 0 12px;
  border-bottom: 0;
  color: var(--muted);
  font-weight: 500;
  white-space: nowrap;

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

  &.current {
    color: var(--text);
    font-weight: 600;

    &::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 2px;
      border-radius: 2px;
      background: var(--accent);
    }
  }
}

// Pull request header and byline

.issue-heading {
  margin: 0.25rem 0 0;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.issue-number {
  font-family: var(--mono);
  font-size: 0.9em;
  font-weight: 500;
}

.issue-byline {
  gap: 8px 12px;
  margin: 12px 0 0;
  font-size: 14px;

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

  code {
    padding: 1px 6px;
    border-radius: 6px;
    background: var(--surface-2);
    color: var(--text);
    font-family: var(--mono);
    font-size: 12.5px;
  }
}

// State badges: open is --ok, closed is --bad, merged is the soft purple.

.issue-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 26px;
  padding: 0 11px;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: var(--surface-2);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1;

  &.issue-badge-open {
    color: var(--ok);
    background: var(--surface);
  }

  &.issue-badge-closed {
    color: var(--bad);
    background: var(--surface);
  }

  &.issue-badge-merged {
    border-color: transparent;
    color: var(--merged);
    background: var(--merged-soft);
  }

  &.issue-badge-completed {
    border-color: transparent;
    color: var(--merged);
    background: var(--merged-soft);
  }

  &.issue-badge-not-planned {
    color: var(--muted);
  }
}

// Lists: rows with hairline borders, hover tint.

.issue-list {
  border-color: var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: none;
}

.issue-row {
  padding: 14px 16px;
  border-top-color: var(--border);
  transition: background 0.12s ease;

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

.issue-title {
  color: var(--text);
  font-weight: 600;
}

.issue-meta {
  font-size: 13.5px;
}

.issue-state {
  width: 14px;
  height: 14px;
  margin-top: 0.2rem;
  border-width: 2px;
}

.issue-state-open {
  border-color: var(--ok);
  background: var(--surface);
}

.issue-state-closed {
  border-color: var(--merged);
  background: var(--merged);
}

.issue-state.pull-state-closed {
  border-color: var(--bad);
  background: var(--bad);
}

.issue-state.pull-state-merged {
  border-color: var(--merged);
  background: var(--merged);
}

// Layout: the side panel sits in a 260px column from 1000px wide.

.issue-layout {
  align-items: start;
}

@media (min-width: 1000px) {
  .issue-layout {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 40px;
  }
}

// Breathing room between the header meta line (or the PR tabs) and the discussion.
.issue-head + .issue-layout,
.subnav + .issue-layout {
  margin-top: 16px;
}

.issue-sidebar {
  gap: 0;
  align-content: start;
  min-width: 0;
  font-size: 14px;

  h2 {
    margin: 0 0 8px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }
}

// Side sections: 16px rhythm with a hairline between them. Controls are compact (32px),
// Save buttons are small outline buttons. A control and its Save button share a row; the
// help text sits directly under the control.
.issue-side-section {
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);

  input[type="text"],
  select {
    height: 32px;
    box-sizing: border-box;
    padding: 0 8px;
    font-size: 13px;
  }

  button {
    height: 28px;
    padding: 0 10px;
    font-size: 13px;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    white-space: nowrap;
  }

  form.stack {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;

    > * {
      grid-column: 1 / -1;
    }

    > input[type="text"],
    > select {
      grid-column: 1;
      grid-row: 1;
    }

    > input[type="text"] + p,
    > select + p {
      margin-top: -4px;
    }

    // A control followed by a Save button: the button goes to the right, on the same row.
    &:has(> input[type="text"], > select) > div {
      grid-column: 2;
      grid-row: 1;
    }
  }
}

// Timeline items and reviews as cards: a surface-2 head strip over the body.

.issue-item,
.review-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.issue-item-head {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 13.5px;
}

.issue-item-body {
  padding: 14px 16px;
  line-height: 1.6;
}

// Merge box: a status headline with a coloured rule on the left, then the merge button.

.merge-box {
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);

  &.merge-ok {
    border-left-color: var(--ok);
    background: var(--surface);
  }

  &.merge-bad {
    border-left-color: var(--bad);
    background: var(--surface);
  }

  &.merge-muted {
    border-left-color: var(--border-strong);
    color: var(--muted);
  }

  &.merge-merged {
    border-left-color: var(--merged);
  }
}

.merge-headline {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);

  &::before {
    content: "";
    flex: none;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
  }
}

.merge-ok .merge-headline {
  color: var(--ok);
}

.merge-bad .merge-headline {
  color: var(--bad);
}

.merge-merged .merge-headline {
  color: var(--merged);
}

.merge-muted .merge-headline {
  color: var(--muted);
}

.merge-box button[type="submit"] {
  width: 100%;
  height: 38px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
  cursor: pointer;

  &:hover {
    border-color: var(--accent-ink);
    background: var(--accent-ink);
  }
}

// Checks: status icons in the status colours, one row each.

.checks-summary {
  gap: 8px;
  font-size: 14px;

  &.status-success > .status-icon {
    color: var(--ok);
  }

  &.status-failure > .status-icon {
    color: var(--bad);
  }

  &.status-pending > .status-icon {
    color: var(--warn);
  }
}

.status-icon {
  &.status-success {
    color: var(--ok);
  }

  &.status-failure {
    color: var(--bad);
  }

  &.status-pending {
    color: var(--warn);
  }
}

.status-list {
  gap: 10px;
}

.status-item {
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

// Diffs: a file card with a sticky header strip, mono code, and add/del rows marked on the left.

.diff-file {
  max-width: 100%;
  margin: 0 0 24px;
  border-color: var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: visible;
}

.diff-file-header {
  position: sticky;
  top: var(--topbar-h);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding: 10px 14px;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--surface-2);
  font-size: 13.5px;
}

// Path on the left; status and counts grouped on the right.
.diff-path {
  min-width: 0;
  overflow-wrap: anywhere;
  font-family: var(--mono);
  color: var(--text);
}

.diff-file-meta {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  gap: 12px;
}

.diff-file-body {
  border: 0;
  border-radius: 0 0 var(--radius) var(--radius);
  background: var(--surface);
  overflow-x: auto;
  overflow-y: hidden;
}

.diff-stats {
  font-size: 13px;

  .add {
    color: var(--add-mark);
  }

  .del {
    color: var(--del-mark);
  }
}

.diff-table {
  font-size: 12.5px;
  line-height: 20px;

  .diff-line {
    > .diff-ln {
      background: var(--surface);
    }

    &.add {
      background: var(--add-bg);

      > .diff-ln {
        background: var(--add-bg);
      }

      > td:first-child {
        box-shadow: inset 3px 0 0 var(--add-mark);
      }

      .diff-code {
        color: var(--add-text);
      }
    }

    &.del {
      background: var(--del-bg);

      > .diff-ln {
        background: var(--del-bg);
      }

      > td:first-child {
        box-shadow: inset 3px 0 0 var(--del-mark);
      }

      .diff-code {
        color: var(--del-text);
      }
    }

    &.ctx .diff-code {
      color: var(--text);
    }

    &.hunk {
      background: var(--hunk-bg);

      > td {
        background: var(--hunk-bg);
        color: var(--muted);
      }

      .diff-code {
        padding-top: 4px;
        padding-bottom: 4px;
        color: var(--muted);
      }
    }
  }

  .diff-ln {
    min-width: 3.5em;
    padding: 0 10px;
    color: var(--ln-text);
    border-right: 1px solid var(--border);
  }

  .diff-code {
    padding: 0 18px 0 12px;
  }
}

.diff-collapsed {
  margin: 0;
  padding: 12px 14px;
  border: 0;
  background: var(--surface);
  color: var(--muted);
  font-size: 14px;
}

// Changed-file summary: a compact list of mono paths with their counts, no bullets.

.diff-index {
  list-style: none;
  margin: 8px 0 16px;
  padding: 0;
  font-size: 13px;

  li {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 2px 10px;
    padding: 5px 0;
    min-width: 0;
    border-bottom: 1px solid var(--border);

    &:last-child {
      border-bottom: 0;
    }
  }

  a {
    min-width: 0;
    overflow-wrap: anywhere;
    font-family: var(--mono);
    color: var(--text);

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

// New issue: label checkboxes sit in a wrapping row, box beside name.

.label-picker {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 8px 18px;

  label {
    flex-direction: row;
    align-items: center;
    gap: 8px;
    font-weight: 400;
  }

  input[type="checkbox"] {
    width: auto;
    margin: 0;
  }
}

// Review bar: radios as a row of options, actions as a row with Submit primary and Discard quiet.

.review-bar {
  .review-choices {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-start;
    gap: 8px 22px;

    label {
      flex-direction: row;
      align-items: center;
      gap: 8px;
      font-weight: 400;
    }

    input[type="radio"] {
      width: auto;
      margin: 0;
    }
  }

  .review-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 18px;
    margin-top: 14px;

    .review-inline .link-button {
      color: var(--muted);
      text-decoration: underline;
      text-underline-offset: 3px;

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

// Narrow screens: the diff scrolls inside its own box, never the page.

@media (max-width: 600px) {
  .subnav {
    gap: 20px;
  }

  .diff-file-header {
    padding: 8px 12px;
  }

  .diff-table .diff-code {
    padding-right: 14px;
  }
}