// ─────────────────────────────────────────────────────────────────────────────
// Component: Blame viewer  (.blm-* prefix)
// File:      src/scss/components/_blame.scss
//
// Visual rules only — colors, typography, borders, animations.
// Structural layout lives in pages/_blame.scss.
// ─────────────────────────────────────────────────────────────────────────────

// ── Page header ───────────────────────────────────────────────────────────────

.blm-page-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) 0 var(--space-3);
}

.blm-header-left {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  flex: 1;
  min-width: 0;
}

.blm-path-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  flex-shrink: 0;
  color: var(--color-accent);
}

.blm-path-info { flex: 1; min-width: 0; }

.blm-filename {
  margin: 0 0 4px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;

  code {
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    background: none;
  }
}

.blm-type-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: 1px solid;
  padding: 2px 7px;
  white-space: nowrap;

  &--symbol {
    color: var(--color-accent);
    border-color: color-mix(in srgb, var(--color-accent) 35%, transparent);
    background: color-mix(in srgb, var(--color-accent) 8%, transparent);
  }
  &--file {
    color: var(--text-muted);
    border-color: var(--border-default);
    background: var(--bg-elevated);
  }
}

.blm-breadcrumb {
  margin: 0;
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;

  code {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-accent-link);
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 1px 6px;
  }
}

.blm-breadcrumb-link {
  color: var(--color-accent-link);
  text-decoration: none;
  &:hover { text-decoration: underline; }
}

// ── Stats strip ───────────────────────────────────────────────────────────────

.blm-stats {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0 var(--space-3);
  flex-wrap: wrap;
}

.blm-stat {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  font-size: 12px;
  color: var(--text-muted);
}

.blm-stat-val {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-secondary);
}

.blm-stat--hotspot  { &.blm-stat--active { border-color: color-mix(in srgb, var(--color-orange) 40%, transparent); .blm-stat-val { color: var(--color-orange); } } }
.blm-stat--dead     { &.blm-stat--active { border-color: color-mix(in srgb, var(--color-accent-link) 40%, transparent); .blm-stat-val { color: var(--color-accent-link); } } }
.blm-stat--blast    { &.blm-stat--active { border-color: color-mix(in srgb, var(--color-warning) 40%, transparent); .blm-stat-val { color: var(--color-warning); } } }

// ── Empty state ───────────────────────────────────────────────────────────────

.blm-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-12) var(--space-6);
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;

  p { margin: 0; }
  code {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--color-accent-link);
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 1px 6px;
  }
}

.blm-empty-hint {
  font-size: 12px;
  color: var(--text-disabled);
}

// ── Commit legend ─────────────────────────────────────────────────────────────

.blm-legend {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  overflow: hidden;
}

.blm-legend-hdr {
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.blm-legend-prov-key {
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
}

.blm-commit-card {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border-subtle);
  text-decoration: none;
  transition: background var(--transition-fast);
  cursor: pointer;

  &:last-child { border-bottom: none; }
  &:hover { background: var(--bg-hover); }
}

.blm-commit-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 3px;
}

.blm-commit-body { flex: 1; min-width: 0; }

.blm-commit-top {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 2px;
}

.blm-commit-sha {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-accent-link);
  background: var(--bg-overlay);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
  text-decoration: none;
  flex-shrink: 0;
}

.blm-commit-prov {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;

  &--agent {
    background: color-mix(in srgb, var(--agent-accent) 12%, transparent);
    color: var(--agent-accent);
  }
  &--human {
    background: color-mix(in srgb, var(--color-success) 12%, transparent);
    color: var(--color-success);
  }
}

.blm-commit-count {
  font-size: 10px;
  color: var(--text-muted);
  background: var(--bg-overlay);
  border-radius: var(--radius-full);
  padding: 1px 5px;
  margin-left: auto;
  flex-shrink: 0;
}

.blm-commit-msg {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
}

.blm-commit-meta {
  font-size: 10px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.blm-commit-model {
  font-size: 9px;
  font-weight: 600;
  color: var(--agent-accent);
  background: color-mix(in srgb, var(--agent-accent) 10%, transparent);
  border-radius: var(--radius-full);
  padding: 0 4px;
}

// ── Symbol cards ──────────────────────────────────────────────────────────────

.blm-symbol-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.blm-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  border-left: 3px solid var(--card-color, var(--color-accent));
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);

  &:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.3); }
  &[open] { border-left-width: 4px; }
}

.blm-card-summary {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px 12px;
  cursor: pointer;
  list-style: none;
  user-select: none;

  &::-webkit-details-marker { display: none; }
  &:hover { background: var(--bg-hover); }
}

.blm-card-main { flex: 1; min-width: 0; }

.blm-card-top {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: 5px;
  flex-wrap: wrap;
}

.blm-symbol-name {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.blm-symbol-link {
  color: inherit;
  text-decoration: none;
  &:hover { color: var(--color-accent-link); }
}

.blm-op {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  border: 1px solid;
  padding: 1px 6px;
  flex-shrink: 0;

  &--add     { color: var(--color-success);     border-color: color-mix(in srgb, var(--color-success) 35%, transparent);     background: color-mix(in srgb, var(--color-success) 8%, transparent); }
  &--modify,
  &--replace { color: var(--color-accent-link); border-color: color-mix(in srgb, var(--color-accent-link) 35%, transparent); background: color-mix(in srgb, var(--color-accent-link) 8%, transparent); }
  &--delete,
  &--remove  { color: var(--color-danger);      border-color: color-mix(in srgb, var(--color-danger) 35%, transparent);      background: color-mix(in srgb, var(--color-danger) 8%, transparent); }
  &--rename  { color: var(--color-warning);     border-color: color-mix(in srgb, var(--color-warning) 35%, transparent);    background: color-mix(in srgb, var(--color-warning) 10%, transparent); }
  &--patch   { color: var(--text-muted);        border-color: var(--border-subtle);                                           background: var(--bg-overlay); }
}

.blm-signal {
  font-size: 10px;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid;
  padding: 1px 7px;
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;

  &--hotspot { color: var(--color-orange);  border-color: color-mix(in srgb, var(--color-orange) 40%, transparent);  background: color-mix(in srgb, var(--color-orange) 8%, transparent); }
  &--dead    { color: var(--color-accent-link); border-color: color-mix(in srgb, var(--color-accent-link) 30%, transparent); background: color-mix(in srgb, var(--color-accent-link) 6%, transparent); }
  &--blast   { color: var(--color-warning); border-color: color-mix(in srgb, var(--color-warning) 40%, transparent); background: color-mix(in srgb, var(--color-warning) 8%, transparent); }
}

.blm-card-bottom {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.blm-heat {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.blm-heat-bar {
  width: 60px;
  height: 4px;
  background: var(--bg-overlay);
  border-radius: var(--radius-full);
  overflow: hidden;
  flex-shrink: 0;
}

.blm-heat-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-orange));
  border-radius: var(--radius-full);
  min-width: 2px;
}

.blm-heat-count {
  font-size: 10px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.blm-card-author {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-muted);
  flex: 1;
  min-width: 0;
}

.blm-author-icon {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 9px;

  &--agent {
    background: color-mix(in srgb, var(--agent-accent) 15%, transparent);
    color: var(--agent-accent);
  }
  &--human {
    background: color-mix(in srgb, var(--color-success) 15%, transparent);
    color: var(--color-success);
  }
}

.blm-card-dot { color: var(--text-disabled); }

.blm-card-time { color: var(--text-muted); font-size: 11px; }

.blm-card-commit {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-accent-link);
  text-decoration: none;
  background: var(--bg-overlay);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
  margin-left: auto;
  flex-shrink: 0;
  &:hover { border-color: var(--color-accent); }
}

.blm-expand-chevron {
  color: var(--text-muted);
  transition: transform var(--transition-fast);
  flex-shrink: 0;

  details[open] > summary & { transform: rotate(180deg); }
}

// ── Symbol history panel ──────────────────────────────────────────────────────

.blm-history-panel {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
}

.blm-history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;

  th {
    padding: 6px 10px;
    text-align: left;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    background: var(--bg-overlay);
    border-bottom: 1px solid var(--border-subtle);
  }

  td {
    padding: 5px 10px;
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: middle;
    color: var(--text-secondary);
  }

  tr:last-child td { border-bottom: none; }
  tr:hover td { background: var(--bg-hover); }
}

.blm-hist-num   { color: var(--text-disabled); font-size: 10px; width: 28px; text-align: right; }
.blm-hist-sha a {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-accent-link);
  text-decoration: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
  &:hover { border-color: var(--color-accent); }
}
.blm-hist-msg   { color: var(--text-secondary); max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.blm-hist-author { color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.blm-hist-age   { color: var(--text-muted); font-size: 10px; white-space: nowrap; }

.blm-history-footer {
  padding: 6px 10px;
  border-top: 1px solid var(--border-subtle);

  a {
    font-size: 11px;
    color: var(--color-accent-link);
    text-decoration: none;
    &:hover { text-decoration: underline; }
  }
}

.blm-history-empty {
  padding: var(--space-3) var(--space-3);
  font-size: 11px;
  color: var(--text-muted);
  font-style: italic;
  margin: 0;
}

// ── File blame view ───────────────────────────────────────────────────────────

.blm-file-view {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-base);
  overflow: hidden;
}

.blm-file-commit-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-default);
  flex-wrap: wrap;
  font-size: 12px;
}

.blm-file-commit-sha {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-accent-link);
  text-decoration: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  flex-shrink: 0;
  &:hover { border-color: var(--color-accent); }
}

.blm-file-commit-msg {
  color: var(--text-secondary);
  font-size: 12px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.blm-file-commit-sep { color: var(--text-disabled); }

.blm-file-commit-author {
  color: var(--text-muted);
  font-size: 11px;
  flex-shrink: 0;
}

.blm-file-commit-time {
  color: var(--text-muted);
  font-size: 11px;
  flex-shrink: 0;
}

.blm-file-empty {
  padding: var(--space-6);
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

// ── Code table (file blame) ───────────────────────────────────────────────────

.blm-code-table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  tab-size: 4;
}

.blm-code-row {
  scroll-margin-top: calc(var(--sticky-offset, 80px) + 16px);

  &:target .blm-code-cell,
  &:hover  .blm-code-cell { background: var(--bg-hover); }
  &:target .blm-gutter     { background: color-mix(in srgb, var(--color-accent) 8%, transparent); }
}

.blm-gutter {
  width: 1%;
  white-space: nowrap;
  vertical-align: top;
  padding: 0 10px 0 0;
  text-align: right;
  user-select: none;
  border-right: 1px solid var(--border-subtle);
  // border-left applied via inline style (commit color stripe)
}

.blm-lnlink {
  color: var(--text-disabled);
  text-decoration: none;
  font-size: 11px;
  display: block;
  padding: 1px 0;
  &:hover { color: var(--color-accent-link); }
}

.blm-code-cell {
  padding: 0 16px 0 12px;
  white-space: pre;
  width: 100%;
  color: var(--text-primary);
  line-height: 1.65;
}

.blm-code-truncated {
  padding: var(--space-3) var(--space-4);
  font-size: 11px;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border-top: 1px solid var(--border-subtle);
  font-style: italic;
}

// ── Authorship key ────────────────────────────────────────────────────────────

.blm-prov-key {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  color: var(--text-muted);
}