/* ══════════════════════════════════════════════════════════════════════════
   변경 이력 — the amendment ledger.

   Inherits every token from styles.css. This page is the second room of the
   same building, not a new one.

   The one deliberate inversion: on the dashboard the announcement is the
   headline and the change hides behind a chip. Here the CHANGE is the
   headline and the announcement is its caption — because the reader arrives
   already knowing they care about deadlines and budgets, and needs to scan
   for the one that moved.
   ══════════════════════════════════════════════════════════════════════════ */

.chg-main { gap: var(--space-4); }

.chg-head { max-width: 62ch; }
.chg-head h1 { font-size: 40px; letter-spacing: -0.02em; margin: 0 0 var(--space-3); }
.chg-lede { font-size: 16px; line-height: 1.6; color: var(--color-neutral-700); margin: 0; }

/* — controls — */
.chg-controls {
  display: flex; flex-wrap: wrap; gap: var(--space-3);
  align-items: center; padding-top: var(--space-2);
}
.chg-controls .input { width: 220px; margin-left: auto; }

.chg-kinds { display: flex; flex-wrap: wrap; gap: var(--space-1); }
.kind {
  appearance: none; font: inherit; font-size: 12px; cursor: pointer;
  padding: 5px 10px; border: 1px solid var(--color-divider);
  background: transparent; color: var(--color-neutral-700);
}
.kind:hover { background: color-mix(in srgb, var(--color-text) 6%, transparent); }
.kind[aria-pressed="true"] {
  background: var(--color-text); color: var(--color-bg); border-color: var(--color-text);
}
.kind .n { font-variant-numeric: tabular-nums; opacity: 0.65; margin-left: 5px; }

.chg-summary {
  font-size: 13px; color: var(--color-neutral-600);
  font-variant-numeric: tabular-nums; margin: 0;
  padding-bottom: var(--space-2); border-bottom: 2px solid var(--color-divider);
}

/* — the dated spine —
   Days run down the left as a sticky marker; amendments stack to its right. */
.day { display: grid; grid-template-columns: 92px minmax(0, 1fr); }
.day + .day { border-top: 1px solid var(--color-divider); }

.day-mark {
  position: sticky; top: 0; align-self: start;
  padding: var(--space-4) var(--space-3) var(--space-4) 0;
  background: var(--color-bg);
}
.day-date {
  font-family: var(--font-heading); font-weight: 800;
  font-size: 22px; line-height: 1; letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.day-dow { font-size: 12px; color: var(--color-neutral-600); margin-top: 3px; }
.day-count { font-size: 11px; color: var(--color-neutral-500); margin-top: var(--space-2); font-variant-numeric: tabular-nums; }

.day-body { border-left: 2px solid var(--color-divider); padding-left: var(--space-4); }

/* — one amendment — */
.amend { padding: var(--space-4) 0; }
.amend + .amend { border-top: 1px solid color-mix(in srgb, var(--color-text) 10%, transparent); }

/* The delta line: the loudest thing on the page. */
.delta {
  display: flex; flex-wrap: wrap; align-items: baseline;
  gap: var(--space-2) var(--space-3); margin-bottom: var(--space-2);
}
.delta-field {
  font-family: var(--font-heading); font-weight: 800;
  font-size: 15px; letter-spacing: -0.01em; min-width: 86px;
}
.delta-pair {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-2);
  font-size: 17px; line-height: 1.35; font-variant-numeric: tabular-nums;
  min-width: 0;
}
.delta-from {
  color: var(--color-neutral-600);
  text-decoration: line-through; text-decoration-color: var(--color-neutral-400);
  overflow-wrap: anywhere;
}
.delta-arrow { color: var(--color-neutral-500); flex: none; }
.delta-to {
  background: var(--color-accent-100); color: var(--color-accent-800);
  padding: 1px 7px; font-weight: 600; overflow-wrap: anywhere;
  box-decoration-break: clone; -webkit-box-decoration-break: clone;
}
/* Events with no before/after (attachment added, removed, revision). */
.delta-event { font-size: 17px; line-height: 1.35; overflow-wrap: anywhere; }
.delta-event .what { font-weight: 600; }

/* The announcement is the caption. */
.amend-title {
  font-size: 14px; line-height: 1.45; color: var(--color-text);
  text-decoration: none; display: inline-block; max-width: 72ch;
}
.amend-title:hover { color: var(--color-accent-700); text-decoration: underline; }
.amend-meta {
  display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-3);
  align-items: baseline; margin-top: 3px;
  font-size: 12px; color: var(--color-neutral-600); font-variant-numeric: tabular-nums;
}
.amend-meta .at { margin-left: auto; }
.amend-actions { display: flex; gap: var(--space-2); margin-top: var(--space-2); }
.amend-actions .btn { font-size: 12px; padding: 3px var(--space-2); }

/* — inline document diff — */
.doc-diff {
  margin-top: var(--space-3); background: var(--color-surface);
  padding: var(--space-2) var(--space-3);
}
.doc-diff-head {
  display: flex; flex-wrap: wrap; gap: var(--space-3);
  font-size: 11px; color: var(--color-neutral-700);
  font-variant-numeric: tabular-nums; margin-bottom: var(--space-2);
}
.doc-diff-head .added { color: var(--color-accent-700); font-weight: 600; }
.doc-diff-head .removed { color: var(--color-neutral-600); font-weight: 600; }

/* — states — */
.chg-empty {
  padding: var(--space-8) 0; max-width: 54ch;
}
.chg-empty h2 { font-size: 20px; margin: 0 0 var(--space-2); }
.chg-empty p { font-size: 14px; color: var(--color-neutral-600); margin: 0; line-height: 1.6; }

.chg-more { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-6) 0 var(--space-2); }

@media (max-width: 760px) {
  .chg-head h1 { font-size: 30px; }
  .chg-controls .input { margin-left: 0; width: 100%; }
  .day { grid-template-columns: 1fr; }
  .day-mark {
    position: static; display: flex; align-items: baseline; gap: var(--space-2);
    padding: var(--space-4) 0 var(--space-2);
  }
  .day-count { margin-top: 0; margin-left: auto; }
  .day-body { border-left: 0; padding-left: 0; }
  .delta-field { min-width: 0; }
  .amend-meta .at { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) { .day-mark { position: static; } }