/* ═══════════════════════════════════════════════════════════════════════
   DataView — "Light Table"
   A dataset explorer for AI image-prompt pairs.
   Warm parchment palette, editorial typography, image-forward cards.
   ═══════════════════════════════════════════════════════════════════════ */

:root {
  --bg:             #F7F4EE;
  --surface:        #FFFFFF;
  --surface-raised: #FDFCFA;
  --border:         #E6E0D6;
  --border-light:   #EFE9DF;
  --text:           #2D2A26;
  --text-secondary: #8C8478;
  --text-tertiary:  #B5AEA4;
  --accent:         #8B5C3C;
  --accent-hover:   #A06A45;
  --accent-soft:    #F0E6DA;
  --accent-softer:  #F8F2EB;
  --danger:         #B54A4A;
  --sans:           'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --serif:          'Newsreader', Georgia, 'Times New Roman', serif;
  --mono:           'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --radius:         8px;
  --radius-sm:      5px;
  --drawer-w:       480px;
  --shadow-sm:      0 1px 3px rgba(45,42,38,0.06);
  --shadow-md:      0 4px 16px rgba(45,42,38,0.08);
  --shadow-lg:      0 8px 32px rgba(45,42,38,0.12);
  --transition:     180ms ease;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

.hidden { display: none !important; }
.spacer { flex: 1; }

/* ── Header ───────────────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  background: var(--bg);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12.5px;
  font-family: var(--sans);
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
}
.header-btn:hover { color: var(--text); border-color: var(--text-tertiary); background: var(--surface); }

.path-wrap {
  flex: 1;
  display: flex;
  max-width: 640px;
  position: relative;
}

.path-wrap input {
  width: 100%;
  padding: 6px 60px 6px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
  outline: none;
  transition: border-color var(--transition);
}
.path-wrap input:focus { border-color: var(--accent); }
.path-wrap input::placeholder { color: var(--text-tertiary); }

.path-open-btn {
  position: absolute;
  right: 1px; top: 1px; bottom: 1px;
  padding: 0 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--sans);
  transition: background var(--transition);
}
.path-open-btn:hover { background: var(--accent-hover); }

.wordmark {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: -0.3px;
  flex-shrink: 0;
}
.wordmark-accent { color: var(--accent); }

/* ── Toolbar ──────────────────────────────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.toolbar-left, .toolbar-right { display: flex; align-items: center; gap: 6px; }

.pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 11px;
  font-family: var(--mono);
  color: var(--text-secondary);
  white-space: nowrap;
  line-height: 1.6;
}
.pill-accent { color: var(--accent); border-color: var(--accent-soft); background: var(--accent-softer); font-weight: 500; }

.search-box {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 8px;
  transition: border-color var(--transition);
}
.search-box:focus-within { border-color: var(--accent); }

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

#search-input {
  background: none;
  border: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
  padding: 5px 0;
  outline: none;
  width: 160px;
}
#search-input::placeholder { color: var(--text-tertiary); }

.search-count {
  font-size: 10px;
  font-family: var(--mono);
  color: var(--text-tertiary);
}

.view-switch {
  display: flex;
  gap: 2px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.vs-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 5px 8px;
  background: none;
  border: none;
  border-radius: 3px;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}
.vs-btn:hover { color: var(--text-secondary); }
.vs-btn.active { color: var(--accent); background: var(--surface); box-shadow: var(--shadow-sm); }

.vs-badge {
  background: var(--accent);
  color: #fff;
  font-size: 9px;
  font-weight: 600;
  font-family: var(--mono);
  padding: 0 4px;
  border-radius: 6px;
  min-width: 14px;
  text-align: center;
  line-height: 16px;
}

/* ── Main ─────────────────────────────────────────────────────────── */
.main { display: flex; flex-direction: column; height: calc(100vh - 93px); }
.view { flex: 1; overflow: auto; }

.gallery-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 20px;
  border-bottom: 1px solid var(--border-light);
  background: var(--surface-raised);
  position: sticky;
  top: 0;
  z-index: 10;
}

.gt-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 500;
}

.gt-select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 3px 6px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-family: var(--mono);
  cursor: pointer;
}

.gt-hint {
  font-size: 10.5px;
  color: var(--text-tertiary);
  font-style: italic;
}

.page-label {
  font-size: 11px;
  font-family: var(--mono);
  color: var(--text-secondary);
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--surface);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}
.page-btn:hover:not(:disabled) { color: var(--text); border-color: var(--text-tertiary); }
.page-btn:disabled { opacity: 0.3; cursor: default; }

/* ── Gallery ──────────────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  padding: 16px 20px;
}

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover { border-color: var(--text-tertiary); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.card.selected { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow-md); }
.card.card-open { border-color: var(--accent); background: var(--accent-softer); }

.card-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
  background: var(--bg);
}

.card-row {
  position: absolute;
  top: 6px;
  left: 6px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(6px);
  color: var(--text-secondary);
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 10px;
  font-family: var(--mono);
  font-weight: 500;
  pointer-events: none;
}

.card-dims {
  position: absolute;
  bottom: 6px;
  right: 6px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(6px);
  color: var(--text-tertiary);
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 9px;
  font-family: var(--mono);
  pointer-events: none;
}

.card-check {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  pointer-events: none;
  box-shadow: var(--shadow-sm);
}
.card.selected .card-check { display: flex; }

.card-caption {
  padding: 8px 10px;
  font-size: 12px;
  font-family: var(--serif);
  color: var(--text-secondary);
  line-height: 1.45;
  max-height: 60px;
  overflow: hidden;
  border-top: 1px solid var(--border-light);
}

/* ── Table ────────────────────────────────────────────────────────── */
.table-wrap {
  overflow: auto;
  flex: 1;
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  font-family: var(--mono);
}

.table-wrap th {
  padding: 7px 12px;
  background: var(--surface);
  color: var(--text-secondary);
  font-weight: 500;
  text-align: left;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
  white-space: nowrap;
  text-transform: uppercase;
  font-size: 10px;
  letter-spacing: 0.4px;
}

.table-wrap td {
  padding: 5px 12px;
  border-bottom: 1px solid var(--border-light);
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: middle;
}

.table-wrap tbody tr:hover td { background: var(--accent-softer); }
.table-wrap .cell-null { color: var(--text-tertiary); }
.table-wrap .row-num { color: var(--text-tertiary); font-size: 10px; user-select: none; }

.cell-thumb {
  width: 36px;
  height: 36px;
  object-fit: cover;
  border-radius: 3px;
  display: block;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: transform var(--transition);
}
.cell-thumb:hover { transform: scale(1.12); }

/* ── Compare ──────────────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 55vh;
  color: var(--text-tertiary);
  gap: 10px;
  text-align: center;
}
.empty-state p { font-size: 13px; color: var(--text-secondary); }
.empty-hint { font-size: 11.5px !important; color: var(--text-tertiary) !important; }

.compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 16px;
  padding: 20px;
  align-items: start;
}

.compare-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-light);
}

.cc-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--accent);
  font-family: var(--mono);
}

.cc-remove {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 16px;
  padding: 2px 6px;
  border-radius: 3px;
  line-height: 1;
}
.cc-remove:hover { color: var(--danger); background: rgba(181,74,74,0.06); }

.compare-card img {
  width: 100%;
  max-height: 45vh;
  object-fit: contain;
  display: block;
  background: var(--bg);
  cursor: zoom-in;
}

.cc-prompt {
  padding: 12px 14px;
  font-family: var(--serif);
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text);
  border-top: 1px solid var(--border-light);
  max-height: 140px;
  overflow-y: auto;
}

.cc-meta {
  padding: 8px 14px 12px;
  border-top: 1px solid var(--border-light);
}

.cc-meta-row {
  display: flex;
  gap: 8px;
  font-size: 11px;
  line-height: 1.6;
}
.cc-meta-key { color: var(--text-tertiary); font-family: var(--mono); font-size: 10px; min-width: 80px; flex-shrink: 0; }
.cc-meta-val { color: var(--text-secondary); font-family: var(--mono); font-size: 10px; word-break: break-all; }

/* ── Drawer ───────────────────────────────────────────────────────── */
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: var(--drawer-w);
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 200;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -4px 0 24px rgba(45,42,38,0.06);
}
.drawer.open { transform: translateX(0); }

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.drawer-title {
  font-size: 12px;
  font-family: var(--mono);
  font-weight: 500;
  color: var(--text-secondary);
}

.drawer-head-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.drawer-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  cursor: pointer;
  transition: all var(--transition);
}
.drawer-nav-btn:hover { color: var(--text); background: var(--bg); border-color: var(--border); }

.drawer-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 18px;
  transition: all var(--transition);
  margin-left: 2px;
}
.drawer-close:hover { color: var(--text); background: var(--bg); }

.drawer-body {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 45px);
  overflow: hidden;
}

.drawer-image-wrap {
  flex-shrink: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  max-height: 50vh;
  overflow: hidden;
  border-bottom: 1px solid var(--border-light);
}

.drawer-image {
  max-width: 100%;
  max-height: 50vh;
  object-fit: contain;
  display: block;
  cursor: zoom-in;
}

.drawer-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.drawer-section-label {
  display: block;
  font-size: 10px;
  font-family: var(--mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-tertiary);
  margin-bottom: 6px;
}

.drawer-prompt {
  font-family: var(--serif);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text);
}

.drawer-meta {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.drawer-meta-row {
  display: flex;
  gap: 10px;
  font-size: 12px;
  line-height: 1.7;
  padding: 2px 0;
  border-bottom: 1px solid var(--border-light);
}
.drawer-meta-row:last-child { border-bottom: none; }
.drawer-meta-key { color: var(--text-tertiary); font-family: var(--mono); font-size: 11px; min-width: 90px; flex-shrink: 0; }
.drawer-meta-val { color: var(--text-secondary); font-family: var(--mono); font-size: 11px; word-break: break-all; }

/* ── Sidebar ──────────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: 340px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  z-index: 200;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.22s ease;
}
.sidebar.open { transform: translateX(0); }

.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(45,42,38,0.18);
  z-index: 199;
  display: none;
  backdrop-filter: blur(1px);
}
.backdrop.open { display: block; }

.sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.sidebar-label {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-secondary);
}

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 18px;
}
.btn-icon:hover { color: var(--text); background: var(--bg); border-color: var(--border); }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 6px 14px;
  font-size: 11px;
  font-family: var(--mono);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
  overflow-x: auto;
  white-space: nowrap;
  flex-shrink: 0;
}

.breadcrumb-item { cursor: pointer; padding: 2px 4px; border-radius: 3px; }
.breadcrumb-item:hover { background: var(--bg); color: var(--text); }
.breadcrumb-sep { color: var(--text-tertiary); margin: 0 1px; }

.folder-list { flex: 1; overflow-y: auto; padding: 4px 0; }

.folder-entry {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  cursor: pointer;
  transition: background var(--transition);
}
.folder-entry:hover { background: var(--bg); }

.folder-entry .fe-icon { width: 16px; text-align: center; flex-shrink: 0; font-size: 13px; }
.folder-entry .fe-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-family: var(--mono); font-size: 12px; }
.folder-entry .fe-meta { font-size: 10px; font-family: var(--mono); color: var(--text-tertiary); flex-shrink: 0; }

.folder-entry.is-dir .fe-name { color: var(--text); }
.folder-entry.is-dataset .fe-name { color: var(--accent); font-weight: 500; }
.folder-entry.is-file .fe-name { color: var(--text-secondary); }
.folder-entry.is-dataset .fe-icon { color: var(--accent); }
.folder-entry.is-dir .fe-icon { color: var(--text-secondary); }
.folder-entry.is-file .fe-icon { color: var(--text-tertiary); }
.folder-entry.is-parent { color: var(--text-secondary); border-bottom: 1px solid var(--border-light); margin-bottom: 4px; }
.folder-entry.is-parent .fe-icon { color: var(--text-tertiary); }

/* ── Welcome ──────────────────────────────────────────────────────── */
.welcome {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - 52px);
  padding: 40px 20px;
}
.welcome-inner { text-align: center; }
.welcome-icon { color: var(--text-tertiary); margin-bottom: 16px; opacity: 0.35; }
.welcome-inner h2 { font-size: 20px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.welcome-inner p { font-size: 14px; color: var(--text-secondary); }
.welcome-inner code {
  padding: 1px 5px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-secondary);
}

/* ── Lightbox ─────────────────────────────────────────────────────── */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(45,42,38,0.92);
  z-index: 300;
  justify-content: center;
  align-items: center;
  cursor: zoom-out;
  backdrop-filter: blur(4px);
}
.lightbox.active { display: flex; }

.lightbox img {
  max-width: 92vw;
  max-height: 92vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 12px 48px rgba(0,0,0,0.25);
}

.lb-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  color: rgba(255,255,255,0.7);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  backdrop-filter: blur(8px);
}
.lb-close:hover { background: rgba(255,255,255,0.18); color: #fff; }

/* ── Loading ──────────────────────────────────────────────────────── */
.loading {
  position: fixed;
  inset: 0;
  background: rgba(247,244,238,0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 400;
  backdrop-filter: blur(2px);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { width: 100%; }
  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; padding: 12px; }
  .compare-grid { grid-template-columns: 1fr; }
  .drawer { width: 100%; }
  .toolbar { padding: 6px 12px; }
  .gallery-toolbar { padding: 6px 12px; }
  .gt-hint { display: none; }
  #search-input { width: 120px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0ms !important; animation-duration: 0ms !important; }
}