:root {
  --tool-color: #38bdf8;
  --bg-1: #030712;
  --bg-2: #07152d;
  --card-bg: rgba(9, 17, 38, .78);
  --card-border: rgba(255,255,255,.11);
  --text-soft: rgba(226,232,240,.72);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #f8fafc;
  background:
    radial-gradient(circle at top right, color-mix(in srgb, var(--tool-color) 20%, transparent), transparent 22%),
    linear-gradient(180deg, var(--bg-2), var(--bg-1) 54%, #120821);
}
body::before,
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
body::before {
  background:
    radial-gradient(circle at 16% 18%, color-mix(in srgb, var(--tool-color) 16%, transparent), transparent 24%),
    radial-gradient(circle at 80% 14%, rgba(255,255,255,.05), transparent 14%),
    radial-gradient(circle at 72% 78%, rgba(255,255,255,.03), transparent 20%);
}
body::after {
  background-image: radial-gradient(circle, rgba(255,255,255,.88) 0 1px, transparent 1.5px);
  background-size: 120px 120px;
  opacity: .28;
}

.pdf-tool-app {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 18px clamp(18px, 2vw, 36px) 78px;
}
.topbar {
  position: sticky;
  top: 12px;
  z-index: 18;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  padding: 12px 14px;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,.10);
  background: linear-gradient(180deg, rgba(10,18,36,.82), rgba(8,16,34,.70));
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 38px rgba(0,0,0,.22), 0 0 0 1px rgba(255,255,255,.02), 0 0 34px color-mix(in srgb, var(--tool-color) 18%, transparent);
}
.menu-carousel-btn,
.badge,
.helper-badge {
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(14,22,43,.62);
  backdrop-filter: blur(12px);
  color: #e2e8f0;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.menu-carousel-btn {
  width: 78px;
  height: 78px;
  border-radius: 24px;
  box-shadow: 0 0 28px color-mix(in srgb, var(--tool-color) 18%, transparent), inset 0 0 0 1px rgba(255,255,255,.05);
  background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.04));
}
.menu-carousel-btn .carousel-icon {
  width: 52px;
  height: 52px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,.08);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.06), 0 0 20px color-mix(in srgb, var(--tool-color) 16%, transparent);
  transition: transform .25s ease, color .25s ease, box-shadow .25s ease;
}
.menu-carousel-btn i { font-size: 1.3rem; }
.badge,
.helper-badge { padding: 11px 16px; font-weight: 700; letter-spacing: .03em; }
.badge { box-shadow: 0 0 22px color-mix(in srgb, var(--tool-color) 22%, transparent); background: rgba(255,255,255,.05); }
.badge i { color: var(--tool-color); font-size: 1.1rem; }

.hero {
  display: grid;
  grid-template-columns: minmax(280px, 0.42fr) minmax(860px, 1.58fr);
  gap: 18px;
  align-items: start;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(14px);
  border-radius: 28px;
  padding: 20px;
  box-shadow: 0 14px 42px rgba(2, 6, 23, .28), inset 0 0 0 1px rgba(255,255,255,.02);
}
.hero-card { display: flex; flex-direction: column; gap: 12px; }
.hero-card h1 { margin: 0 0 4px; font-size: clamp(1.55rem, 2.5vw, 2.3rem); line-height: 1.06; }
.lead { margin: 0; font-size: .96rem; line-height: 1.55; color: rgba(226,232,240,.82); }
.steps { display: grid; gap: 8px; }
.step {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 10px;
  align-items: center;
  padding: 9px 11px;
  border-radius: 16px;
  background: linear-gradient(90deg, rgba(255,255,255,.06), rgba(255,255,255,.025));
  border: 1px solid rgba(255,255,255,.08);
}
.step b {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  font-size: .82rem;
  color: var(--tool-color);
  background: color-mix(in srgb, var(--tool-color) 18%, rgba(255,255,255,.03));
  box-shadow: 0 0 18px color-mix(in srgb, var(--tool-color) 18%, transparent);
}
.step span, .notice, .status, .mini-note li { line-height: 1.5; color: rgba(226,232,240,.84); }
.step span { font-size: .88rem; }

.upload-card { display: flex; flex-direction: column; gap: 14px; min-height: 760px; position: relative; overflow: hidden; }
.upload-stage-copy { display:grid; gap:10px; max-width: 760px; margin: 0 auto; text-align:center; }
.upload-kicker { display:inline-flex; justify-self:center; width:fit-content; padding:8px 12px; border-radius:999px; border:1px solid rgba(255,255,255,.10); background: rgba(255,255,255,.05); color: var(--tool-color); font-size:.78rem; font-weight:900; letter-spacing:.08em; text-transform:uppercase; }
.upload-stage-copy h2 { margin:0; font-size: clamp(1.8rem, 3vw, 2.55rem); line-height:1.08; }
.upload-stage-copy p { margin:0; color: rgba(226,232,240,.76); line-height:1.7; font-size:1rem; }
.tool-functionalities { display:grid; gap:14px; }
.dropzone {
  display: grid;
  place-items: center;
  text-align: center;
  gap: 10px;
  min-height: 170px;
  border-radius: 28px;
  border: 1.5px dashed color-mix(in srgb, var(--tool-color) 48%, rgba(255,255,255,.1));
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02));
  padding: 24px;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease;
}
.dropzone:hover,.dropzone.dragover { transform: translateY(-2px); box-shadow: 0 0 0 4px color-mix(in srgb, var(--tool-color) 14%, transparent), 0 10px 28px rgba(2,6,23,.2); }
.dropzone i { font-size: 2.7rem; color: var(--tool-color); animation: iconPulse 2.1s ease-in-out infinite; }
.dropzone input { display: none; }
.dropzone strong { font-size: 1.18rem; }
.dropzone span { color: var(--text-soft); max-width: 440px; }

.file-list { display: grid; gap: 10px; }
.file-row {
  display: flex; justify-content: space-between; gap: 12px; align-items: center;
  border-radius: 18px; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.035); padding: 10px 12px;
}
.file-meta { display: flex; align-items: center; gap: 12px; min-width: 0; }
.file-thumb { width: 54px; height: 54px; border-radius: 14px; object-fit: cover; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.04); }
.file-meta i { font-size: 1.7rem; color: var(--tool-color); }
.file-meta div { min-width: 0; }
.file-meta span { display: block; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-meta small { color: var(--text-soft); }
.file-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.icon-btn,.primary-btn,.ghost-btn,.toggle-btn {
  border: 0; border-radius: 14px; cursor: pointer; font-weight: 700;
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}
.icon-btn { width: 40px; height: 40px; background: rgba(255,255,255,.06); color: #fff; }
.primary-btn,.ghost-btn { padding: 13px 18px; display: inline-flex; align-items: center; gap: 8px; }
.primary-btn { color: #081018; background: linear-gradient(180deg, color-mix(in srgb, var(--tool-color) 94%, #fff), color-mix(in srgb, var(--tool-color) 78%, #000)); box-shadow: 0 10px 22px color-mix(in srgb, var(--tool-color) 28%, transparent); }
.ghost-btn { background: rgba(255,255,255,.07); color: #fff; }
.icon-btn:hover,.primary-btn:hover,.ghost-btn:hover,.toggle-btn:hover { transform: translateY(-1px); }

.options-grid { display: grid; grid-template-columns: repeat(2, minmax(180px, 1fr)); gap: 14px; }
.option { display: flex; flex-direction: column; gap: 8px; }
.option.full { grid-column: 1 / -1; }
.option label { font-weight: 700; font-size: .92rem; }
.option input[type="text"], .option input[type="number"] {
  width: 100%; padding: 12px 14px; border-radius: 14px; border: 1px solid rgba(255,255,255,.1); background: rgba(255,255,255,.05); color: #fff; outline: none;
}
.option input:disabled {
  opacity: 1;
  color: #e2e8f0;
  -webkit-text-fill-color: #e2e8f0;
  background: rgba(255,255,255,.075);
  border-color: rgba(255,255,255,.14);
  cursor: default;
}
.option input[type="range"] { width: 100%; accent-color: var(--tool-color); }
.range-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.range-value { min-width: 56px; text-align: right; font-size: .84rem; color: var(--tool-color); font-weight: 800; }
.toggle-group { display: flex; flex-wrap: wrap; gap: 8px; }
.toggle-input { display: none; }
.toggle-btn {
  border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.05); color: #e2e8f0;
  border-radius: 999px; padding: 10px 14px;
}
.toggle-btn.active {
  background: color-mix(in srgb, var(--tool-color) 22%, rgba(255,255,255,.03)); color: #fff;
  border-color: color-mix(in srgb, var(--tool-color) 42%, rgba(255,255,255,.2)); box-shadow: 0 0 0 3px color-mix(in srgb, var(--tool-color) 12%, transparent);
}
.switch-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 46px;
  border-radius: 14px; padding: 10px 12px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
}
.switch { position: relative; display: inline-block; width: 58px; height: 32px; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch-slider { position: absolute; inset: 0; background: rgba(255,255,255,.14); border-radius: 999px; transition: .2s ease; }
.switch-slider::before { content: ''; position: absolute; width: 24px; height: 24px; left: 4px; top: 4px; border-radius: 50%; background: #fff; transition: .2s ease; }
.switch input:checked + .switch-slider { background: color-mix(in srgb, var(--tool-color) 58%, rgba(255,255,255,.18)); }
.switch input:checked + .switch-slider::before { transform: translateX(26px); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }
.status { display: none; padding: 14px 16px; border-radius: 16px; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.04); }
.status.show { display: block; }
.preview-expander {
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 24px;
  background: rgba(255,255,255,.03);
  overflow: hidden;
}
.preview-expander summary {
  list-style: none;
  cursor: pointer;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
}
.preview-expander summary::-webkit-details-marker { display:none; }
.preview-summary-left { display:grid; gap:4px; }
.preview-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.preview-title { font-weight: 800; font-size: .98rem; color: #fff; }
.preview-hint { font-size: .78rem; color: var(--text-soft); }
.preview-summary-indicator {
  width: 34px; height: 34px; border-radius: 50%; display:grid; place-items:center;
  background: rgba(255,255,255,.06); color: var(--tool-color); transition: transform .24s ease, box-shadow .24s ease;
}
.preview-expander[open] .preview-summary-indicator { transform: rotate(180deg); box-shadow: 0 0 0 3px color-mix(in srgb, var(--tool-color) 10%, transparent); }
.preview-panel { display: grid; gap: 10px; padding: 0 16px 16px; }

.preview-box {
  border-radius: 24px; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.035);
  min-height: 700px; display: grid; place-items: center; padding: 18px; overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.02), 0 0 28px color-mix(in srgb, var(--tool-color) 8%, transparent);
}
.preview-box img,.preview-box canvas {
  max-width: 100%; max-height: 760px; border-radius: 16px; border: 1px solid rgba(255,255,255,.08);
  background-image: linear-gradient(45deg, rgba(255,255,255,.06) 25%, transparent 25%), linear-gradient(-45deg, rgba(255,255,255,.06) 25%, transparent 25%), linear-gradient(45deg, transparent 75%, rgba(255,255,255,.06) 75%), linear-gradient(-45deg, transparent 75%, rgba(255,255,255,.06) 75%);
  background-size: 18px 18px; background-position: 0 0, 0 9px, 9px -9px, -9px 0px;
}
.quiet-notes { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.mini-note {
  flex: 1 1 320px; background: rgba(255,255,255,.035); border: 1px solid rgba(255,255,255,.08);
  border-radius: 18px; overflow: hidden;
}
.mini-note summary { list-style: none; cursor: pointer; padding: 14px 16px; font-weight: 800; }
.mini-note summary::-webkit-details-marker { display: none; }
.mini-note .mini-note-body { padding: 0 16px 14px; color: rgba(226,232,240,.78); font-size: .95rem; }
.mini-note ul { margin: 0; padding-left: 18px; }
.footer {
  position: fixed; left: 50%; bottom: 14px; transform: translateX(-50%); width: calc(100% - 24px); text-align: center; color: rgba(226,232,240,.55); font-size: .85rem; z-index: 5;
}
.footer a { color: #c9f1ff; text-decoration: none; }
.hidden { display: none !important; }
@keyframes iconPulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.06); } }
@media (max-width: 1180px) { .hero { grid-template-columns: 1fr; } .preview-box { min-height: 420px; } .pdf-tool-app.has-files .upload-stage-copy { max-width: none; margin: 0; text-align: left; } .pdf-tool-app.has-files .dropzone { max-width: none; width:100%; margin-left: 0; transform:none; } }
@media (max-width: 760px) {
  .options-grid { grid-template-columns: 1fr; }
  .topbar { align-items: stretch; flex-direction: column; }
  .badge { justify-content: center; }
  .file-row { flex-direction: column; align-items: stretch; }
  .file-actions { justify-content: flex-end; }
  .preview-box { min-height: 340px; }
  .pdf-tool-app.initial-state .upload-card { min-height: 460px; }
  .pdf-tool-app.initial-state .dropzone { min-height: 220px; }
  .footer { font-size: .76rem; }
}

.preview-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  align-items: start;
}
.preview-card {
  min-width: 0;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.035);
  border-radius: 18px;
  overflow: hidden;
}
.preview-card-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(255,255,255,.035);
}
.preview-card-head strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: .84rem;
}
.preview-card-head small {
  flex: 0 0 auto;
  color: var(--text-soft);
  font-size: .78rem;
}
.preview-card-body {
  min-height: 220px;
  display: grid;
  place-items: center;
  padding: 12px;
}
.preview-card-body img,
.preview-card-body canvas {
  max-width: 100%;
  max-height: 560px;
  object-fit: contain;
}
.preview-extra-message {
  margin: 12px 0 0;
  color: var(--text-soft);
  text-align: center;
  font-size: .86rem;
}
.preview-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.preview-card-title {
  min-width: 0;
  display: grid;
  gap: 2px;
}
.preview-card-title strong {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.preview-card-actions {
  display: inline-flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.preview-action-btn {
  border: 1px solid rgba(255,255,255,.12);
  background: color-mix(in srgb, var(--tool-color) 22%, rgba(255,255,255,.04));
  color: #fff;
  border-radius: 999px;
  padding: 8px 10px;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.preview-action-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--tool-color) 12%, transparent);
}
.preview-action-btn.download {
  background: rgba(255,255,255,.075);
}
.preview-pagination {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: rgba(226,232,240,.84);
  font-weight: 800;
}
.preview-pagination button {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.075);
  color: #fff;
  cursor: pointer;
}
.preview-pagination button:disabled {
  opacity: .38;
  cursor: not-allowed;
}
@media (max-width: 760px) {
  .preview-card-head { align-items: flex-start; flex-direction: column; }
  .preview-card-actions { justify-content: flex-start; }
}


.pdf-tool-app.initial-state .hero {
  grid-template-columns: 1fr;
  min-height: calc(100vh - 190px);
  align-items: center;
}
.pdf-tool-app.initial-state .hero-card,
.pdf-tool-app.initial-state .tool-functionalities,
.pdf-tool-app.initial-state .quiet-notes,
.pdf-tool-app.initial-state .file-list {
  display: none;
}
.pdf-tool-app.initial-state .upload-card {
  max-width: 980px;
  width: min(96%, 980px);
  margin: 5vh auto 0;
  min-height: 560px;
  justify-content: center;
  box-shadow: 0 20px 54px rgba(2, 6, 23, .34), inset 0 0 0 1px rgba(255,255,255,.04), 0 0 46px color-mix(in srgb, var(--tool-color) 12%, transparent);
}
.pdf-tool-app.initial-state .dropzone {
  min-height: 280px;
  max-width: 820px;
  margin: 8px auto 0;
  border-width: 2px;
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--tool-color) 10%, transparent), 0 20px 48px rgba(2,6,23,.22);
}
.pdf-tool-app.has-files .hero-card { display: flex; }
.pdf-tool-app.has-files .tool-functionalities,
.pdf-tool-app.has-files .file-list { display: grid; }
.pdf-tool-app.has-files .quiet-notes { display: flex; }
.pdf-tool-app.has-files .upload-stage-copy {
  max-width: 420px;
  margin: 0 0 0 auto;
  text-align: left;
}
.pdf-tool-app.has-files .upload-kicker { justify-self: start; }
.pdf-tool-app.has-files .dropzone {
  min-height: 128px;
  max-width: 340px;
  margin-left: auto;
  padding: 16px 18px;
  transform: translateY(0) scale(.94);
}
.pdf-tool-app.has-files .dropzone strong { font-size: .98rem; }
.pdf-tool-app.has-files .dropzone span { font-size: .86rem; }
.upload-card,
.dropzone,
.upload-stage-copy,
.hero-card,
.tool-functionalities,
.quiet-notes {
  transition: all .42s ease;
}

/* v13 layout refactor */
.topbar-rich {
  align-items: flex-start;
  gap: 22px;
}
.topbar-main {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
  flex: 1 1 auto;
}
.topbar-copy {
  min-width: 0;
  display: grid;
  gap: 8px;
}
.title-line {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.badge-inline {
  padding-inline: 12px;
}
.appbar-title {
  margin: 0;
  color: #f8fafc;
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  line-height: 1.04;
}
.appbar-description {
  margin: 0;
  color: rgba(226,232,240,.82);
  font-size: .96rem;
  line-height: 1.6;
  max-width: 880px;
}
.topbar-actions {
  display: flex;
  align-items: stretch;
  gap: 12px;
  flex-wrap: wrap;
}
.help-bubble {
  position: relative;
}
.help-bubble summary {
  list-style: none;
  width: 52px;
  height: 52px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.06);
  color: var(--tool-color);
  font-size: 1.35rem;
  cursor: pointer;
  box-shadow: 0 0 24px color-mix(in srgb, var(--tool-color) 14%, transparent);
}
.help-bubble summary::-webkit-details-marker { display:none; }
.help-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  width: min(360px, 88vw);
  padding: 16px 18px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,.10);
  background: linear-gradient(180deg, rgba(10,18,36,.96), rgba(7,15,30,.92));
  box-shadow: 0 22px 42px rgba(0,0,0,.32), 0 0 28px color-mix(in srgb, var(--tool-color) 12%, transparent);
  z-index: 30;
}
.help-panel strong {
  display: block;
  margin-bottom: 10px;
  color: #fff;
}
.help-panel ol {
  margin: 0;
  padding-left: 18px;
  color: rgba(226,232,240,.86);
  line-height: 1.6;
}
.appbar-upload {
  min-width: 250px;
  padding: 10px 16px;
  border-radius: 22px;
  border: 1px dashed color-mix(in srgb, var(--tool-color) 55%, rgba(255,255,255,.16));
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.03));
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.02), 0 0 28px color-mix(in srgb, var(--tool-color) 10%, transparent);
}
.appbar-upload i {
  font-size: 1.55rem;
  color: var(--tool-color);
}
.appbar-upload strong,
.appbar-upload span {
  display: block;
}
.appbar-upload strong {
  color: #f8fafc;
  font-size: .95rem;
}
.appbar-upload span {
  color: rgba(226,232,240,.7);
  font-size: .8rem;
}
.appbar-upload input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.empty-state {
  min-height: calc(100vh - 240px);
  display: none;
  place-items: center;
  text-align: center;
  padding: clamp(28px, 6vw, 64px);
}
.empty-state-icon {
  width: 88px;
  height: 88px;
  border-radius: 28px;
  display: grid;
  place-items: center;
  margin: 0 auto 16px;
  font-size: 2.2rem;
  color: var(--tool-color);
  background: color-mix(in srgb, var(--tool-color) 18%, rgba(255,255,255,.06));
  box-shadow: 0 0 0 1px rgba(255,255,255,.06), 0 0 34px color-mix(in srgb, var(--tool-color) 12%, transparent);
}
.empty-state h2 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 4vw, 3rem);
}
.empty-state p {
  max-width: 760px;
  margin: 0 auto;
  color: rgba(226,232,240,.8);
  line-height: 1.75;
}
.workbench {
  display: grid;
  grid-template-columns: minmax(320px, 390px) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}
.control-panel,
.preview-column {
  min-height: calc(100vh - 210px);
}
.control-panel {
  display: grid;
  align-content: start;
  gap: 14px;
}
.panel-section-heading h2 {
  margin: 0 0 4px;
  font-size: 1.16rem;
}
.panel-section-heading span,
.preview-column-head p {
  color: rgba(226,232,240,.74);
}
.preview-column {
  display: grid;
  align-content: start;
  gap: 14px;
}
.preview-column-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.preview-column-head h2 {
  margin: 2px 0 6px;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
}
.preview-kicker {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  color: var(--tool-color);
  font-size: .76rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.inline-notes {
  display: flex;
  flex-direction: column;
}
.pdf-tool-app.initial-state .empty-state {
  display: grid;
}
.pdf-tool-app.initial-state .workbench {
  display: none;
}
.pdf-tool-app.has-files .empty-state {
  display: none;
}
.pdf-tool-app.has-files .workbench {
  display: grid;
}
.pdf-tool-app.initial-state .preview-column,
.pdf-tool-app.initial-state .control-panel {
  min-height: unset;
}
/* neutralize old staged layout */
.pdf-tool-app.initial-state .hero,
.pdf-tool-app.has-files .hero,
.pdf-tool-app.initial-state .upload-card,
.pdf-tool-app.has-files .upload-card,
.pdf-tool-app.initial-state .hero-card,
.pdf-tool-app.has-files .hero-card,
.pdf-tool-app.initial-state .tool-functionalities,
.pdf-tool-app.has-files .tool-functionalities,
.pdf-tool-app.initial-state .upload-stage-copy,
.pdf-tool-app.has-files .upload-stage-copy {
  all: unset;
}
@media (max-width: 1180px) {
  .topbar-rich {
    flex-direction: column;
    align-items: stretch;
  }
  .topbar-actions {
    justify-content: space-between;
  }
  .workbench {
    grid-template-columns: 1fr;
  }
  .control-panel,
  .preview-column {
    min-height: unset;
  }
}
@media (max-width: 760px) {
  .title-line {
    align-items: flex-start;
  }
  .topbar-main {
    align-items: flex-start;
  }
  .topbar-actions {
    flex-direction: column;
  }
  .appbar-upload {
    width: 100%;
    min-width: 0;
  }
  .preview-column-head {
    flex-direction: column;
  }
}

/* Orbit Tools v14 refinements */
.hidden-file-input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none;}
.center-upload-dropzone{display:grid;place-items:center;text-align:center;gap:14px;width:min(980px,94vw);min-height:420px;margin:auto;padding:42px;border-radius:34px;border:2px dashed color-mix(in srgb,var(--tool-color) 48%,rgba(255,255,255,.14));background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.03));box-shadow:0 0 0 6px color-mix(in srgb,var(--tool-color) 9%,transparent),0 24px 70px rgba(0,0,0,.26),inset 0 0 0 1px rgba(255,255,255,.04);cursor:pointer;transition:.32s ease;}
.center-upload-dropzone:hover,.center-upload-dropzone.dragover{transform:translateY(-3px);box-shadow:0 0 0 8px color-mix(in srgb,var(--tool-color) 14%,transparent),0 28px 78px rgba(0,0,0,.30);}
.center-upload-dropzone>strong{display:inline-flex;align-items:center;gap:10px;padding:13px 18px;border-radius:999px;background:linear-gradient(180deg,color-mix(in srgb,var(--tool-color) 92%,#fff),color-mix(in srgb,var(--tool-color) 78%,#000));color:#07111d;font-weight:900;}
.center-upload-dropzone p{max-width:760px;line-height:1.75;color:rgba(226,232,240,.82);}
.pdf-tool-app.initial-state .appbar-upload{display:none;}
.pdf-tool-app.has-files .appbar-upload{display:inline-flex;}
.pdf-tool-app.initial-state .empty-state{display:grid;min-height:calc(100vh - 210px);}
.pdf-tool-app.has-files .empty-state{display:none;}
.pdf-tool-app.initial-state .workbench{display:none;}
.pdf-tool-app.has-files .workbench{display:grid;}
.inline-notes,.quiet-notes,.mini-note{display:none!important;}
.control-panel{overflow:visible;position:relative;z-index:5;}
.preview-column{position:relative;z-index:1;overflow:visible;}
.options-grid,.file-list,.actions,.status,.split-page-selector{position:relative;z-index:7;}
.color-swatches{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px;}
.color-chip{width:28px;height:28px;border-radius:50%;border:2px solid rgba(255,255,255,.25);cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,.16);}
.mini-toggle-row{display:flex;gap:6px;flex-wrap:wrap;align-items:center;}
.mini-toggle{border:1px solid rgba(255,255,255,.12);border-radius:999px;background:rgba(255,255,255,.06);color:#e2e8f0;padding:8px 10px;font-weight:900;cursor:pointer;}
.mini-toggle.active{background:color-mix(in srgb,var(--tool-color) 26%,rgba(255,255,255,.05));color:#fff;box-shadow:0 0 0 3px color-mix(in srgb,var(--tool-color) 12%,transparent);}
.preview-action-btn.danger{background:rgba(239,68,68,.18);}
.clickable-preview{cursor:zoom-in;}
.clickable-preview:hover{box-shadow:0 0 0 3px color-mix(in srgb,var(--tool-color) 18%,transparent) inset;}
.split-selector-head{display:grid;gap:4px;margin:10px 0;color:#fff;}
.split-selector-head span{font-size:.86rem;color:rgba(226,232,240,.72);}
.page-toggle-grid{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px;}
.page-toggle{min-width:42px;height:38px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);color:#e2e8f0;font-weight:900;cursor:pointer;}
.page-toggle.active{background:color-mix(in srgb,var(--tool-color) 28%,rgba(255,255,255,.04));color:#fff;box-shadow:0 0 0 3px color-mix(in srgb,var(--tool-color) 12%,transparent);}
.pdf-page-modal{position:fixed;inset:0;z-index:9999;display:none;place-items:center;padding:24px;background:rgba(0,0,0,.72);backdrop-filter:blur(10px);}
.pdf-page-modal.show{display:grid;}
.pdf-page-modal-card{position:relative;width:min(96vw,1180px);max-height:94vh;overflow:auto;border-radius:28px;padding:22px;background:#0b1328;border:1px solid rgba(255,255,255,.14);box-shadow:0 30px 80px rgba(0,0,0,.45);}
.pdf-page-modal-card canvas{display:block;max-width:100%;height:auto;margin:auto;border-radius:14px;background:#fff;}
.pdf-page-modal-card h3{margin:0 54px 16px 0;color:#fff;}
.modal-close{position:absolute;right:16px;top:16px;width:42px;height:42px;border-radius:50%;border:0;background:rgba(255,255,255,.10);color:#fff;cursor:pointer;font-size:1.4rem;}
@media (max-width:1180px){.workbench{grid-template-columns:1fr!important}.topbar-actions{width:100%;justify-content:flex-end}.appbar-upload{min-width:220px}}

/* v15 overlap and pdf action fixes */
.file-row {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
}
.file-meta {
  min-width: 0;
  align-items: flex-start;
}
.file-meta div {
  min-width: 0;
  flex: 1 1 auto;
}
.file-meta span {
  white-space: normal;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.file-actions {
  justify-content: flex-end;
  align-items: center;
}
.preview-card-head {
  flex-direction: column;
  align-items: stretch;
}
.preview-card-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}
.preview-action-btn.warning {
  background: rgba(245,158,11,.18);
}
.preview-card.is-hidden {
  opacity: .58;
}
.preview-card.is-hidden .preview-card-body {
  filter: grayscale(.1);
}
.preview-box {
  overflow: visible;
}
.preview-grid {
  align-items: stretch;
}
.preview-card-body {
  overflow: hidden;
}
.option,
.options-grid,
.toggle-group,
.switch-row,
.range-head,
.page-toggle-grid,
.split-page-selector,
.split-selector-head {
  position: relative;
  z-index: 2;
}
.control-panel {
  min-width: 0;
}
.preview-column {
  min-width: 0;
}
@media (min-width: 1181px) {
  .workbench {
    grid-template-columns: minmax(340px, 420px) minmax(0, 1fr);
  }
}


/* v18 overflow and per-item actions */
.status, .status * { overflow-wrap: anywhere; word-break: break-word; }
.preview-card-title, .preview-card-title * { min-width: 0; }
.preview-card-title strong, .preview-card-title small {
  display: block;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.preview-column-head p {
  overflow-wrap: anywhere;
  word-break: break-word;
}
.file-actions { gap: 8px; flex-wrap: wrap; }
.mini-toggle.action {
  background: color-mix(in srgb,var(--tool-color) 24%,rgba(255,255,255,.06));
  color: #fff;
}
.file-row, .status, .preview-card, .preview-card-head, .preview-card-body { overflow: hidden; }