@use '../../styles/variables' as *;
@use '../../styles/mixins' as *;

$diff-mono: 'Consolas', 'Monaco', 'Menlo', 'SF Mono', monospace;
$diff-font-size: 12px;
$diff-line-height: 20px;
$diff-gutter-width: 50px;
$diff-prefix-width: 20px;

// GitHub-inspired diff colors (theme-adaptive via color-mix)
$diff-add-color: #3fb950;
$diff-del-color: #f85149;
$diff-hunk-color: #388bfd;

.diffModal {
  :global(.modal-body) {
    padding: 0;
    max-height: none;
    overflow: hidden;
  }
}

.content {
  display: flex;
  flex-direction: column;
  height: 70vh;
  min-height: 420px;
}

.emptyState {
  flex: 1;
  border: 1px dashed var(--border-color);
  border-radius: $radius-md;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 14px;
  display: grid;
  place-items: center;
  margin: $spacing-md;
}

// ── File container ──────────────────────────────────────

.diffContainer {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

// ── File header ─────────────────────────────────────────

.fileHeader {
  display: flex;
  align-items: center;
  gap: $spacing-sm;
  padding: 10px $spacing-md;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.fileIcon {
  flex-shrink: 0;
  color: var(--text-tertiary);
}

.fileName {
  font-size: 13px;
  font-weight: 600;
  font-family: $diff-mono;
  color: var(--text-primary);
}

.fileStats {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: $spacing-sm;
  font-size: 12px;
  font-weight: 700;
  font-family: $diff-mono;
}

.statAdditions {
  color: $diff-add-color;
}

.statDeletions {
  color: $diff-del-color;
}

.statBar {
  display: inline-flex;
  gap: 2px;
  margin-left: 2px;
}

.statBlock {
  width: 8px;
  height: 8px;
  border-radius: 2px;
}

.statBlockAdd {
  background: $diff-add-color;
}

.statBlockDel {
  background: $diff-del-color;
}

// ── Diff body (scrollable) ──────────────────────────────

.diffBody {
  flex: 1;
  min-height: 0;
  overflow: auto;
  font-family: $diff-mono;
  font-size: $diff-font-size;
  line-height: $diff-line-height;
}

// ── Hunk ────────────────────────────────────────────────

.hunk + .hunk {
  border-top: 1px solid var(--border-color);
}

.hunkHeader {
  display: flex;
  align-items: center;
  background: color-mix(in srgb, $diff-hunk-color 8%, var(--bg-primary));
  border-bottom: 1px solid color-mix(in srgb, $diff-hunk-color 12%, var(--border-color));
  color: color-mix(in srgb, $diff-hunk-color 75%, var(--text-secondary));
  min-height: $diff-line-height;
}

.hunkGutter {
  width: $diff-gutter-width;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
  border-right: 1px solid color-mix(in srgb, $diff-hunk-color 12%, var(--border-color));
}

.hunkExpandIcon {
  color: color-mix(in srgb, $diff-hunk-color 70%, var(--text-tertiary));
  opacity: 0.7;
}

.hunkText {
  padding: 4px $spacing-sm 4px ($diff-prefix-width + $spacing-sm);
  font-size: $diff-font-size;
  white-space: nowrap;
}

// ── Diff line ───────────────────────────────────────────

.diffLine {
  display: flex;
  min-height: $diff-line-height;
}

// ── Line number gutters ─────────────────────────────────

.lineNum {
  width: $diff-gutter-width;
  flex-shrink: 0;
  padding: 0 8px;
  text-align: right;
  color: var(--text-tertiary);
  user-select: none;
  font-variant-numeric: tabular-nums;
  border-right: 1px solid color-mix(in srgb, var(--border-color) 60%, transparent);
  box-sizing: border-box;
}

.lineNumEmpty {
  color: transparent;
}

// ── Prefix column (+/-/space) ───────────────────────────

.linePrefix {
  width: $diff-prefix-width;
  flex-shrink: 0;
  text-align: center;
  user-select: none;
  font-weight: 700;
}

// ── Code text ───────────────────────────────────────────

.lineText {
  flex: 1;
  min-width: 0;
  padding-right: 12px;
  white-space: pre-wrap;
  word-break: break-word;
}

// ── Context lines ───────────────────────────────────────

.context {
  background: var(--bg-primary);

  .linePrefix {
    color: var(--text-tertiary);
  }

  .lineText {
    color: var(--text-primary);
  }
}

// ── Deletion lines ──────────────────────────────────────

.deletion {
  background: color-mix(in srgb, $diff-del-color 8%, var(--bg-primary));

  .lineNum {
    background: color-mix(in srgb, $diff-del-color 12%, var(--bg-primary));
    border-right-color: color-mix(in srgb, $diff-del-color 18%, var(--border-color));
    color: color-mix(in srgb, $diff-del-color 60%, var(--text-tertiary));
  }

  .linePrefix {
    color: $diff-del-color;
  }

  .lineText {
    color: var(--text-primary);
  }
}

// ── Addition lines ──────────────────────────────────────

.addition {
  background: color-mix(in srgb, $diff-add-color 8%, var(--bg-primary));

  .lineNum {
    background: color-mix(in srgb, $diff-add-color 12%, var(--bg-primary));
    border-right-color: color-mix(in srgb, $diff-add-color 18%, var(--border-color));
    color: color-mix(in srgb, $diff-add-color 60%, var(--text-tertiary));
  }

  .linePrefix {
    color: $diff-add-color;
  }

  .lineText {
    color: var(--text-primary);
  }
}

// ── Mobile responsive ───────────────────────────────────

@include mobile {
  .content {
    height: 65vh;
    min-height: 360px;
  }

  .lineNum {
    width: 36px;
    padding: 0 4px;
    font-size: 10px;
  }

  .linePrefix {
    width: 16px;
    font-size: 11px;
  }

  .hunkGutter {
    width: 36px;
  }

  .hunkText {
    padding-left: 20px;
  }

  .diffBody {
    font-size: 11px;
    line-height: 18px;
  }

  .fileName {
    font-size: 12px;
  }

  .fileStats {
    font-size: 11px;
  }
}