/* ── PDF specific accents ────────────────── */
:root {
  --clr-merge: #f5c652;
  --clr-merge-dark: #e0b13e;
  --clr-split: #97cddb;
  --clr-split-dark: #6fb5c8;
  --clr-rotate: #e8744f;
  --clr-rotate-dark: #d0603c;
  --clr-compress: #7ecf9a;
  --clr-compress-dark: #4ea76d;
  --clr-accent: #f5c652;
}

.logo-text strong {
  color: var(--clr-accent);
}

/* ═══════════════════════════════════════════
   HERO  (home view)
   ═══════════════════════════════════════════ */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: calc(100vh - 200px);
  gap: 2rem;
  align-items: center;
  padding: 3rem 0;
}

.hero-left {
  padding-right: 1rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -.04em;
  margin-bottom: 1.25rem;
}
.hero-title .accent {
  color: var(--clr-accent);
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 400px;
}

.hero-right {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ── Tool Cards (Home) ───────────────────── */
.tool-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem 1.75rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  color: var(--surface-dark);
  text-align: left;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.tool-card:hover {
  transform: translateX(-6px) scale(1.015);
  box-shadow: var(--shadow-lg);
}
.tool-card:active {
  transform: translateX(-2px) scale(1);
}

/* Per-tool colours */
.tool-card[data-tool="merge"]  { background: var(--clr-merge); }
.tool-card[data-tool="split"]  { background: var(--clr-split); }
.tool-card[data-tool="rotate"] { background: var(--clr-rotate); }
.tool-card[data-tool="compress"] { background: var(--clr-compress); }

.tool-card-icon {
  width: 52px;
  height: 52px;
  background: rgba(0,0,0,.1);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.tool-card-icon svg {
  width: 26px;
  height: 26px;
}

.tool-card-body { flex: 1; min-width: 0; }

.tool-card-title {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: .15rem;
}

.tool-card-desc {
  font-size: .88rem;
  opacity: .7;
  line-height: 1.4;
}

.tool-card-arrow {
  font-size: 1.5rem;
  font-weight: 700;
  opacity: .35;
  transition: opacity var(--transition), transform var(--transition);
  flex-shrink: 0;
}
.tool-card:hover .tool-card-arrow {
  opacity: .7;
  transform: translateX(4px);
}

/* ═══════════════════════════════════════════
   TOOL VIEW PAGES  (merge / split / rotate)
   ═══════════════════════════════════════════ */

/* Coloured title */
.view-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -.035em;
  margin-bottom: .25rem;
  display: inline-block;
}

/* Colour the title based on parent view */
#view-merge .view-title  { color: var(--clr-merge-dark); }
#view-split .view-title  { color: var(--clr-split-dark); }
#view-rotate .view-title { color: var(--clr-rotate-dark); }
#view-compress .view-title { color: var(--clr-compress-dark); }

[data-theme="dark"] #view-merge .view-title  { color: var(--clr-merge); }
[data-theme="dark"] #view-split .view-title  { color: var(--clr-split); }
[data-theme="dark"] #view-rotate .view-title { color: var(--clr-rotate); }
[data-theme="dark"] #view-compress .view-title { color: var(--clr-compress); }

.view-desc {
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  font-size: .95rem;
}

/* Tool specific primary buttons */
#view-merge .btn-primary  { background: var(--clr-merge-dark); border-color: var(--clr-merge-dark); color: #141414; }
#view-split .btn-primary  { background: var(--clr-split-dark); border-color: var(--clr-split-dark); color: #141414; }
#view-rotate .btn-primary { background: var(--clr-rotate-dark); border-color: var(--clr-rotate-dark); color: #fff; }
#view-compress .btn-primary { background: var(--clr-compress-dark); border-color: var(--clr-compress-dark); color: #fff; }

#view-merge .btn-primary:hover  { background: var(--clr-merge);  border-color: var(--clr-merge); }
#view-split .btn-primary:hover  { background: var(--clr-split);  border-color: var(--clr-split); }
#view-rotate .btn-primary:hover { background: var(--clr-rotate); border-color: var(--clr-rotate); }
#view-compress .btn-primary:hover { background: var(--clr-compress); border-color: var(--clr-compress); }

.drop-zone.drag-over {
  background: rgba(245,198,82,.08);
}

#view-compress .drop-zone.drag-over {
  background: rgba(126,207,154,.12);
}

/* ═══════════════════════════════════════════
   COMPRESS TOOL
   ═══════════════════════════════════════════ */
.card-surface {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.compress-workspace {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
}

.compress-summary,
.compress-panel {
  padding: 1.25rem;
}

.compress-summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.compress-label,
.compress-stat-label {
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.compress-file-name,
.compress-heading {
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: -.03em;
}

.compress-stats-inline {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  color: var(--text-muted);
  font-weight: 700;
}

.compress-note,
.compress-preset-meta,
.compress-result-note {
  color: var(--text-muted);
}

.compress-note {
  margin-top: .35rem;
  max-width: 58ch;
}

.compress-presets {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1rem;
}

#view-compress .compress-preset.btn-active {
  background: var(--clr-compress-dark);
  border-color: var(--clr-compress-dark);
  color: #fff;
}

#view-compress .compress-preset.btn-active:hover {
  background: var(--clr-compress);
  border-color: var(--clr-compress);
}

.compress-preset-meta {
  margin-top: .85rem;
  min-height: 1.55rem;
  font-size: .94rem;
}

.compress-actions {
  margin-top: 1.1rem;
  justify-content: flex-start;
}

.compress-result-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .85rem;
  margin: 1rem 0;
}

.compress-stat {
  padding: 1rem;
}

.compress-stat strong {
  display: block;
  margin-top: .25rem;
  font-size: 1.2rem;
  letter-spacing: -.02em;
}

.compress-result-note {
  margin-bottom: 1rem;
}

[data-theme="dark"] .card-surface {
  box-shadow: none;
}

@media (max-width: 760px) {
  .compress-summary {
    flex-direction: column;
  }

  .compress-result-stats {
    grid-template-columns: 1fr;
  }
}

/* ═══════════════════════════════════════════
   FILE LIST (Merge)
   ═══════════════════════════════════════════ */
.file-list {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  margin: 1.25rem 0;
}

.file-item {
  display: flex;
  align-items: center;
  gap: .85rem;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  transition: border-color var(--transition), transform var(--transition);
}
.file-item:hover {
  border-color: var(--clr-merge);
}
.file-item.sortable-ghost {
  opacity: .35;
}
.file-item.sortable-chosen {
  border-color: var(--clr-merge);
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.file-item-drag {
  cursor: grab;
  color: var(--border-strong);
  font-size: 1.3rem;
  flex-shrink: 0;
  user-select: none;
  transition: color var(--transition);
}
.file-item:hover .file-item-drag { color: var(--text); }

.file-item-thumb {
  width: 42px;
  height: 56px;
  background: #f0f0f0;
  border-radius: 4px;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--border);
}
.file-item-thumb canvas { display: block; width: 100%; height: 100%; object-fit: cover; }

.file-item-info { flex: 1; min-width: 0; }
.file-item-name { font-size: .9rem; font-weight: 700; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block; }
.file-item-meta { font-size: .75rem; color: var(--text-muted); font-weight: 500; }

.remove-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: .4rem;
  border-radius: 6px;
  transition: all var(--transition);
  display: grid; place-items: center;
}
.remove-btn:hover { background: rgba(248,113,113,.1); color: var(--clr-danger); }
.remove-btn svg { width: 18px; height: 18px; }

/* Actions Bar */
.actions-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-sm);
  margin-top: 1rem;
}

.file-count { font-size: .9rem; font-weight: 700; color: var(--text-muted); }

/* Progress Area */
.progress-area { margin-top: 1.5rem; text-align: center; }
.progress-bar { height: 10px; background: var(--border); border-radius: 5px; overflow: hidden; margin-bottom: .5rem; }
.progress-fill { height: 100%; background: var(--clr-accent); width: 0%; transition: width .3s ease; }
.progress-text { font-size: .85rem; font-weight: 700; color: var(--text-muted); }

/* Result Area */
.result-area {
  margin-top: 1.5rem;
  padding: 2rem;
  background: var(--bg-card);
  border: 3px solid var(--clr-success);
  border-radius: var(--radius);
  text-align: center;
  animation: viewIn .4s cubic-bezier(.4,1,.2,1);
}
.result-text { font-size: 1.2rem; font-weight: 800; margin-bottom: 1rem; }

/* ═══════════════════════════════════════════
   SPLIT VIEW SPECIFIC
   ═══════════════════════════════════════════ */
.split-controls {
  margin-bottom: 1.5rem;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
}
.split-mode-bar { display: flex; gap: .5rem; margin-bottom: 1rem; flex-wrap: wrap; }
.split-ranges-input { display: flex; align-items: center; gap: .75rem; }

.page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.page-item {
  position: relative;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .5rem;
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}
.page-item:hover { border-color: var(--text-muted); transform: translateY(-2px); }
.page-item.selected { border-color: var(--clr-accent); background: rgba(245,198,82,.04); border-width: 3px; padding: calc(.5rem - 1px); }

.page-thumb {
  width: 100%;
  aspect-ratio: 1 / 1.414;
  background: #f0f0f0;
  border-radius: var(--radius-xs);
  overflow: hidden;
  margin-bottom: .5rem;
  border: 1px solid var(--border);
}
.page-thumb canvas { display: block; width: 100%; height: 100%; object-fit: contain; }
.page-num { font-size: .8rem; font-weight: 800; text-align: center; display: block; color: var(--text-muted); }
.page-item.selected .page-num { color: var(--text); }

.page-select-badge {
  position: absolute;
  top: -.6rem;
  right: -.6rem;
  width: 24px;
  height: 24px;
  background: var(--clr-accent);
  color: #141414;
  border-radius: 50%;
  border: 3px solid var(--bg-card);
  display: grid;
  place-items: center;
  font-size: .7rem;
  font-weight: 900;
  opacity: 0;
  transform: scale(.5);
  transition: all var(--transition);
}
.page-item.selected .page-select-badge { opacity: 1; transform: scale(1); }

/* ═══════════════════════════════════════════
   ROTATE & REORDER SPECIFIC
   ═══════════════════════════════════════════ */
.rotate-toolbar {
  display: flex;
  gap: .5rem;
  margin-bottom: 1.25rem;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem;
  position: sticky;
  top: 85px;
  z-index: 50;
  box-shadow: var(--shadow);
}

.page-rotate-actions {
  position: absolute;
  bottom: 1.25rem;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: .4rem;
  opacity: 0;
  transform: translateY(4px);
  transition: all var(--transition);
}
.page-item:hover .page-rotate-actions { opacity: 1; transform: translateY(0); }

.btn-icon-sm {
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: 6px;
  background: var(--surface-dark);
  color: var(--text-inv);
  border: none;
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
}
.btn-icon-sm:hover { transform: scale(1.1); }
.btn-icon-sm svg { width: 16px; height: 16px; }

.page-item.sortable-ghost { opacity: 0.2; }
.page-item.sortable-chosen { transform: scale(1.05); cursor: grabbing !important; }

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
.site-footer {
  margin-top: 4rem;
  padding: 2rem 0;
  border-top: 2px solid var(--border);
  text-align: center;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-muted);
}
.site-footer a { color: var(--text); font-weight: 800; }

@media (max-width: 768px) {
  .hero-section { grid-template-columns: 1fr; text-align: center; min-height: auto; }
  .hero-left { padding: 0; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .header-inner { height: auto; padding: 1rem 0; flex-direction: column; gap: .75rem; }
  .tagline { order: 3; width: 100%; }
}