/* ══════════════════════════════════════════════════════════════════════════════
   PHASE 3 — FILE PREVIEW MODAL
══════════════════════════════════════════════════════════════════════════════ */

.file-preview-backdrop {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,0.72);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  opacity: 0; pointer-events: none;
  transition: opacity 0.18s ease;
}
.file-preview-backdrop.open {
  opacity: 1; pointer-events: auto;
}

.file-preview-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex; flex-direction: column;
  width: 100%; max-width: 820px;
  max-height: calc(100vh - 48px);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}

.file-preview-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  gap: 12px; flex-shrink: 0;
}
.file-preview-header-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; flex: 1; }
.file-preview-title {
  font-size: 14px; font-weight: 600; color: var(--text-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.file-preview-meta { font-size: 12px; color: var(--text-muted); }

.file-preview-header-btns { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

.file-preview-dl-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 6px;
  background: var(--accent); color: var(--text-inverse);
  border: none; cursor: pointer;
  font-size: 13px; font-weight: 600;
  transition: opacity 0.15s;
}
.file-preview-dl-btn:hover { opacity: 0.85; }

.file-preview-close-btn {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 6px;
  background: transparent; border: 1px solid var(--border);
  color: var(--text-secondary); cursor: pointer;
  transition: background 0.15s;
}
.file-preview-close-btn:hover { background: var(--bg-base); color: var(--text-primary); }

.file-preview-body {
  flex: 1; overflow: auto; padding: 0;
  background: var(--bg-base);
}

/* ── Image preview ── */
.preview-image {
  display: block; max-width: 100%; max-height: calc(100vh - 140px);
  object-fit: contain; margin: auto;
  padding: 16px; box-sizing: border-box;
}

/* ── Text / code preview ── */
.preview-text-body {
  margin: 0; padding: 20px;
  font-family: var(--font-mono); font-size: 13px; line-height: 1.6;
  color: var(--text-primary); white-space: pre-wrap; word-break: break-all;
  background: var(--bg-base);
}

/* ── Markdown preview ── */
.preview-markdown-body {
  padding: 20px 24px; line-height: 1.7; color: var(--text-primary); font-size: 14px;
}
.preview-markdown-body h1,
.preview-markdown-body h2,
.preview-markdown-body h3,
.preview-markdown-body h4 { margin: 20px 0 8px; color: var(--text-primary); font-weight: 700; }
.preview-markdown-body p   { margin: 0 0 12px; }
.preview-markdown-body pre { background: var(--bg-elevated); border-radius: 6px; padding: 14px; overflow-x: auto; margin: 0 0 12px; max-width: 100%; }
@media (min-width: 768px) {
  /* max-width: 90%, not 100% — a bordered/backgrounded code block that
     reaches flush to the same edge as prose reads as more prominent than
     paragraph text, which rarely wraps all the way out to the edge. Left-
     aligned (no margin auto) so it still starts flush with the rest of the
     content. overflow-x:auto above still covers any line that doesn't fit
     even this narrower box. Gated to this breakpoint, same as the static
     preview/Live rules — this modal is already narrow and padded on
     mobile, and every pixel there matters more for code legibility than
     for visual proportion. */
  .preview-markdown-body pre { max-width: 90%; }
}
.preview-markdown-body code { background: var(--bg-elevated); padding: 2px 5px; border-radius: 4px; font-family: var(--font-mono); font-size: 12px; }
.preview-markdown-body pre code { background: none; padding: 0; }
.preview-markdown-body ul,
.preview-markdown-body ol { padding-left: 22px; margin: 0 0 12px; }
.preview-markdown-body blockquote {
  border-left: 3px solid var(--accent); margin: 0 0 12px;
  padding: 4px 0 4px 14px; color: var(--text-secondary);
}
.preview-markdown-body table { border-collapse: collapse; width: 100%; margin-bottom: 12px; font-size: 13px; }
.preview-markdown-body th,
.preview-markdown-body td { border: 1px solid var(--border); padding: 6px 10px; }
.preview-markdown-body th { background: var(--bg-elevated); font-weight: 600; }
.preview-markdown-body a  { color: var(--accent); text-decoration: none; }
.preview-markdown-body a:hover { text-decoration: underline; }
.preview-markdown-body img { max-width: 100%; height: auto; border-radius: 6px; margin: 0 0 12px; display: block; }

/* ── CSV preview ── */
.preview-csv-wrap { padding: 0; overflow-x: auto; }
/* Scroll wrapper prevents wide tables from breaking the modal on mobile */
.preview-csv-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius-md); }
.preview-csv-table {
  border-collapse: collapse; width: 100%; font-size: 13px;
  background: var(--bg-base);
}
.preview-csv-table th,
.preview-csv-table td {
  border: 1px solid var(--border); padding: 7px 12px;
  text-align: left; color: var(--text-primary); vertical-align: top;
  max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.preview-csv-table th { background: var(--bg-elevated); font-weight: 600; position: sticky; top: 0; }
.preview-csv-table tr:hover td { background: var(--bg-elevated); }

/* ── PDF / unsupported state ── */
.preview-pdf,
.preview-unsupported {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 48px 24px; gap: 10px; text-align: center;
  min-height: 240px;
}
.preview-type-badge {
  display: inline-flex; align-items: center; padding: 6px 14px;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 20px; font-size: 13px; font-weight: 700;
  font-family: var(--font-mono); color: var(--text-secondary);
  margin-bottom: 4px;
}
.preview-unsupported-name  { font-size: 14px; font-weight: 600; color: var(--text-primary); word-break: break-all; }
.preview-unsupported-meta  { font-size: 13px; color: var(--text-muted); }
.preview-unsupported-msg   { font-size: 13px; color: var(--text-secondary); }
.preview-size              { font-size: 13px; color: var(--text-muted); }
.preview-open-btn {
  margin-top: 8px;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px; border-radius: 8px;
  background: var(--accent); color: var(--text-inverse);
  text-decoration: none; font-size: 13px; font-weight: 600;
  transition: opacity 0.15s;
}
.preview-open-btn:hover { opacity: 0.85; }

/* ── Loading / error states ── */
.preview-loading {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 48px; color: var(--text-secondary); font-size: 14px;
}
.preview-error  { color: var(--red); padding: 20px; font-size: 14px; text-align: center; }
.preview-truncation-warning {
  background: var(--bg-elevated); border-bottom: 1px solid var(--border);
  padding: 8px 16px; font-size: 12px; color: var(--text-muted);
}


/* ══════════════════════════════════════════════════════════════════════════════
   PHASE 3 — DRAG-AND-DROP OVERLAY
══════════════════════════════════════════════════════════════════════════════ */

.drop-overlay {
  position: absolute; inset: 0; z-index: 200;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 12px;
  background: rgba(var(--accent-rgb, 255, 193, 7), 0.10);
  border: 2px dashed var(--accent);
  border-radius: 8px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  color: var(--accent);
  font-size: 14px; font-weight: 600;
}
.drop-overlay.visible { opacity: 1; }
.drop-overlay svg { opacity: 0.9; }

/* File action button – preview (eye icon) */
.file-action-btn.preview { color: var(--text-muted); }
.file-action-btn.preview:hover { color: var(--accent); background: var(--bg-base); }