/* ============================================================
   Dataset diff, styles
   ------------------------------------------------------------
   Every colour and spacing value below reads a token from your
   site stylesheet using var(--token, fallback). So:

     - loaded alongside style.css, it inherits your palette and
       follows it automatically if you ever change it
     - loaded on its own, the fallbacks keep it looking right

   The only new tokens are the three verdict colours, because
   your palette has no vocabulary for agree / disagree / review.
   They are deliberately desaturated to sit with your neutrals.
   ============================================================ */

:root {
  --diff-agree:    #4A7C59;
  --diff-disagree: #9E4A3E;
  --diff-review:   #8A6A2F;
  --diff-review-bg:#F2EBDC;
  --diff-panel:    #FFFFFF;
  --diff-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  /* Wider than your 860px prose measure. Comparison tables need the room,
     and this page is a tool rather than something to read. */
  --diff-max-width: 1080px;
}

/* ============================================================
   Base, only applied when this page runs standalone
   ============================================================ */
.diff-standalone {
  background-color: var(--color-bg, #F6F2EF);
  color: var(--color-text, #464445);
  font-family: var(--font-base, 'Inter', sans-serif);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  margin: 0;
}

.diff-standalone *,
.diff-standalone *::before,
.diff-standalone *::after { box-sizing: border-box; }

/* ============================================================
   Layout
   ============================================================ */
.diff-wrap {
  width: 100%;
  max-width: var(--diff-max-width);
  margin: 0 auto;
  padding: var(--space-6, 3rem) var(--space-3, 1.5rem) var(--space-8, 4rem);
}

.diff-header {
  border-bottom: 1px solid var(--color-border, #E4E0DD);
  padding-bottom: var(--space-3, 1.5rem);
  margin-bottom: var(--space-4, 2rem);
}
.diff-header h1 { font-size: 2rem; line-height: 1.2; font-weight: 700; margin: 0 0 var(--space-1, 0.5rem); }
.diff-header p { margin: 0; color: var(--color-muted, #ACA8A5); max-width: 62ch; }

.diff-lede { color: var(--color-muted, #ACA8A5); margin: 0 0 var(--space-3, 1.5rem); max-width: 68ch; }

.diff-wrap h2 { font-size: 1.5rem; font-weight: 600; margin: 0 0 var(--space-1, 0.5rem); }

/* ============================================================
   Step rail
   ============================================================ */
.diff-rail {
  display: flex;
  border: 1px solid var(--color-border, #E4E0DD);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: var(--space-4, 2rem);
  background-color: var(--diff-panel);
}
.diff-rail div {
  flex: 1;
  padding: var(--space-1, 0.5rem) var(--space-2, 1rem);
  font-size: 0.875rem;
  color: var(--color-muted, #ACA8A5);
  border-right: 1px solid var(--color-border, #E4E0DD);
}
.diff-rail div:last-child { border-right: 0; }
.diff-rail div .n { font-family: var(--diff-mono); font-size: 0.75rem; margin-right: var(--space-1, 0.5rem); }
.diff-rail div.active { background-color: var(--color-border, #E4E0DD); color: var(--color-text, #464445); font-weight: 600; }
.diff-rail div.done { color: var(--diff-agree); }

.diff-step { display: none; }
.diff-step.active { display: block; }

/* ============================================================
   Panels
   ============================================================ */
.diff-panel {
  background-color: var(--diff-panel);
  border: 1px solid var(--color-border, #E4E0DD);
  border-radius: 6px;
  padding: var(--space-3, 1.5rem);
  margin-bottom: var(--space-2, 1rem);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}
.diff-panel > h4 {
  margin: 0 0 var(--space-2, 1rem);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text, #464445);
}
.diff-panel > p { margin: 0 0 var(--space-2, 1rem); }

/* ============================================================
   Drop zone
   ============================================================ */
#dropZone {
  border: 1.5px dashed var(--color-border, #E4E0DD);
  border-radius: 6px;
  padding: var(--space-6, 3rem) var(--space-3, 1.5rem);
  text-align: center;
  color: var(--color-muted, #ACA8A5);
  background-color: var(--diff-panel);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
#dropZone:hover, #dropZone.over {
  border-color: var(--color-accent, #4A5568);
  color: var(--color-text, #464445);
}
#dropZone strong {
  display: block;
  color: var(--color-text, #464445);
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

/* ============================================================
   Controls
   ============================================================ */
.diff-wrap button {
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  background-color: var(--color-accent, #4A5568);
  color: #FFFFFF;
  border: 1px solid var(--color-accent, #4A5568);
  padding: 0.5rem 1.1rem;
  border-radius: 4px;
  transition: opacity 0.15s ease;
}
.diff-wrap button:hover { opacity: 0.88; }
.diff-wrap button.ghost {
  background-color: transparent;
  color: var(--color-text, #464445);
  border-color: var(--color-border, #E4E0DD);
}
.diff-wrap button.ghost:hover { border-color: var(--color-accent, #4A5568); color: var(--color-accent, #4A5568); opacity: 1; }
.diff-wrap button.small { padding: 0.25rem 0.6rem; font-size: 0.875rem; }
.diff-wrap button:disabled { opacity: 0.4; cursor: not-allowed; }

.diff-wrap button:focus-visible,
.diff-wrap select:focus-visible,
.diff-wrap input:focus-visible,
#dropZone:focus-visible {
  outline: 2px solid var(--color-accent, #4A5568);
  outline-offset: 2px;
}

.diff-actions {
  display: flex;
  gap: var(--space-2, 1rem);
  align-items: center;
  margin-top: var(--space-3, 1.5rem);
  flex-wrap: wrap;
}

.diff-wrap select {
  font: inherit;
  font-size: 0.9rem;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--color-border, #E4E0DD);
  border-radius: 4px;
  background-color: var(--diff-panel);
  color: var(--color-text, #464445);
  max-width: 260px;
}

/* ============================================================
   Tables
   ============================================================ */
.diff-wrap table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.diff-wrap th {
  text-align: left;
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--color-muted, #ACA8A5);
  border-bottom: 1px solid var(--color-border, #E4E0DD);
  padding: 0.45rem 0.6rem 0.45rem 0;
}
.diff-wrap td {
  padding: 0.45rem 0.6rem 0.45rem 0;
  border-bottom: 1px solid var(--color-border, #E4E0DD);
  vertical-align: top;
}
.diff-wrap tr:last-child td { border-bottom: 0; }
.diff-wrap td.num, .diff-wrap th.num {
  text-align: right;
  padding-right: 1rem;
  font-variant-numeric: tabular-nums;
}
.diff-scroll { overflow-x: auto; }

.diff-wrap code, .diff-mono { font-family: var(--diff-mono); font-size: 0.85rem; }

/* ============================================================
   Tags, reusing your .tag shape
   ============================================================ */
.diff-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background-color: var(--color-border, #E4E0DD);
  color: var(--color-accent, #4A5568);
  white-space: nowrap;
}
.diff-tag.low { background-color: var(--diff-review-bg); color: var(--diff-review); }

.diff-samples {
  font-family: var(--diff-mono);
  font-size: 0.75rem;
  color: var(--color-muted, #ACA8A5);
  margin-top: 0.2rem;
  word-break: break-all;
}

/* ============================================================
   Notes
   ============================================================ */
.diff-note {
  background-color: var(--diff-panel);
  border: 1px solid var(--color-border, #E4E0DD);
  border-left: 3px solid var(--diff-review);
  border-radius: 6px;
  padding: var(--space-3, 1.5rem);
  margin: var(--space-2, 1rem) 0;
}
.diff-note.flat { border-left-color: var(--color-accent, #4A5568); }
.diff-note p { margin: 0 0 var(--space-1, 0.5rem); }
.diff-note p:last-child { margin-bottom: 0; }
.diff-note ul { margin: var(--space-1, 0.5rem) 0 0; padding-left: var(--space-3, 1.5rem); list-style: disc; }
.diff-note li + li { margin-top: 0.3rem; }

/* ============================================================
   Verdict colours
   ============================================================ */
.diff-agree { color: var(--diff-agree); }
.diff-disagree { color: var(--diff-disagree); font-weight: 600; }
.diff-dim { color: var(--color-muted, #ACA8A5); }

/* ============================================================
   File list
   ============================================================ */
.diff-filebar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2, 1rem);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border, #E4E0DD);
}
.diff-filebar:last-child { border-bottom: 0; }
.diff-filebar .name { font-weight: 600; }

/* ============================================================
   Share bar
   ============================================================ */
.diff-bar {
  display: inline-block;
  height: 8px;
  width: 90px;
  background-color: var(--color-border, #E4E0DD);
  border-radius: 2px;
  vertical-align: middle;
  overflow: hidden;
}
.diff-bar > span {
  display: block;
  height: 100%;
  background-color: var(--color-accent, #4A5568);
}

.diff-wrap label.inline { display: flex; gap: 0.5rem; align-items: flex-start; font-size: 0.9rem; }
.diff-wrap input[type="checkbox"] { margin-top: 0.35rem; }

.diff-footer {
  margin-top: var(--space-6, 3rem);
  padding-top: var(--space-3, 1.5rem);
  border-top: 1px solid var(--color-border, #E4E0DD);
  color: var(--color-muted, #ACA8A5);
  font-size: 0.875rem;
}

/* ============================================================
   Mobile
   ============================================================ */
@media (max-width: 640px) {
  .diff-rail { flex-direction: column; }
  .diff-rail div { border-right: 0; border-bottom: 1px solid var(--color-border, #E4E0DD); }
  .diff-rail div:last-child { border-bottom: 0; }
  .diff-wrap { padding-left: var(--space-2, 1rem); padding-right: var(--space-2, 1rem); }
}