:root {
  --bg: #f7f1e8;
  --bg-accent: #efe5d4;
  --surface: rgba(255, 252, 247, 0.82);
  --surface-strong: #fffdf9;
  --ink: #1d1a17;
  --muted: #6a625b;
  --line: rgba(57, 44, 29, 0.12);
  --primary: #8f3d2e;
  --primary-strong: #6d2c20;
  --shadow: 0 18px 50px rgba(59, 39, 17, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(143, 61, 46, 0.12), transparent 30%),
    radial-gradient(circle at right 20%, rgba(165, 124, 64, 0.14), transparent 28%),
    linear-gradient(180deg, #fbf7f1 0%, var(--bg) 52%, var(--bg-accent) 100%);
}

.hidden { display: none !important; }

.shell {
  min-height: 100vh;
  padding: 28px;
}

.hero {
  display: block;
  margin-bottom: 20px;
}

.hero-copy,
.panel {
  background: var(--surface);
  backdrop-filter: blur(18px);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: var(--radius-lg);
}

.hero-copy {
  padding: 28px;
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  color: var(--muted);
}

.hero h1 {
  margin: 0;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 0.95;
}

.hero-text {
  margin: 16px 0 0;
  max-width: none;
  font-size: 18px;
  line-height: 1.5;
  color: #3f362f;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.workspace {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.auth-panel,
.panel {
  padding: 20px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.panel-head h2 {
  margin: 0;
  font-size: 28px;
}

.compact-head {
  margin-bottom: 10px;
}

.compact-head h2 {
  font-size: 22px;
}

.panel-head p {
  margin: 6px 0 0;
  color: var(--muted);
}

.auth-form {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
}

label span {
  font-size: 13px;
  color: var(--muted);
}

input,
select,
textarea,
button {
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(57, 44, 29, 0.18);
  background: rgba(255, 255, 255, 0.72);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--ink);
}

textarea {
  min-height: 460px;
  resize: vertical;
  font-family: var(--mono);
  line-height: 1.55;
  background: #fffefa;
}

button,
.ghost-link {
  border-radius: 999px;
  text-decoration: none;
  transition: transform 140ms ease, background 140ms ease, color 140ms ease, border-color 140ms ease;
}

button:hover,
.ghost-link:hover {
  transform: translateY(-1px);
}

.primary-btn,
.secondary-btn {
  border: 0;
  padding: 12px 16px;
  cursor: pointer;
}

.primary-btn {
  background: linear-gradient(135deg, var(--primary) 0%, #b3674e 100%);
  color: #fffaf5;
}

.secondary-btn {
  background: #efe5d8;
  color: var(--ink);
}

.ghost-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 10px 14px;
  background: rgba(255,255,255,0.45);
}

.error {
  margin: 12px 0 0;
  color: #992f20;
}

.studio {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 70vh;
}

.sidebar {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) auto auto;
  gap: 14px;
  align-items: end;
}

.sidebar .panel-head,
.sidebar .upload-card,
.sidebar .library-meta,
.sidebar .library-controls,
.sidebar .admin-progress {
  margin: 0;
}

.upload-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  padding: 14px;
  border: 1px dashed rgba(57, 44, 29, 0.18);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.42);
}

.library-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.library-controls {
  display: grid;
  grid-template-columns: minmax(280px, 420px) max-content max-content;
  gap: 10px;
  align-items: end;
}

.admin-progress {
  display: grid;
  grid-template-columns: minmax(160px, 220px) minmax(220px, 1fr) minmax(280px, 420px) max-content;
  gap: 10px;
  align-items: end;
}

#load-latest-split,
#delete-current-file {
  width: auto;
  justify-self: start;
  white-space: nowrap;
  padding-inline: 14px;
}

.doc-select-wrap {
  min-width: 0;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border-radius: 999px;
  background: #f0e6db;
  color: #59473a;
  font-size: 13px;
}

.muted { color: var(--muted); }

.canvas-area {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 12px;
  flex-wrap: wrap;
}

.split-tools {
  padding-top: 16px;
}

.split-tools-row {
  display: flex;
  gap: 10px;
  align-items: end;
  flex-wrap: wrap;
}

.split-progress-block {
  margin-top: 10px;
}

.toolbar-group {
  display: flex;
  gap: 10px;
  align-items: end;
  flex-wrap: wrap;
}

.preset-group {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.preset-btn {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.6);
  color: var(--ink);
  padding: 9px 12px;
  cursor: pointer;
}

.preview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  min-height: 0;
}

.preview-panel,
.transcript-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.preview-stage {
  position: relative;
  flex: 1;
  min-height: 560px;
  border-radius: 22px;
  overflow: auto;
  border: 1px solid var(--line);
  background:
    linear-gradient(45deg, rgba(98, 77, 54, 0.04) 25%, transparent 25%, transparent 75%, rgba(98, 77, 54, 0.04) 75%),
    linear-gradient(45deg, rgba(98, 77, 54, 0.04) 25%, transparent 25%, transparent 75%, rgba(98, 77, 54, 0.04) 75%);
  background-size: 24px 24px;
  background-position: 0 0, 12px 12px;
  padding: 20px;
}

#page-image {
  display: block;
  margin: 0 auto;
  border-radius: 18px;
  box-shadow: 0 22px 50px rgba(39, 25, 10, 0.18);
  max-width: none;
  height: auto;
  position: relative;
  z-index: 1;
}

.split-guide {
  position: absolute;
  top: 20px;
  bottom: 20px;
  width: 3px;
  background: linear-gradient(180deg, rgba(143, 61, 46, 0.9), rgba(220, 145, 84, 0.9));
  box-shadow: 0 0 0 1px rgba(255,255,255,0.65);
  pointer-events: none;
  z-index: 5;
}

.empty-state {
  min-height: 100%;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--muted);
  padding: 40px;
  font-size: 18px;
}

.panel-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.transcript-panel .panel-head {
  display: block;
}

.transcript-panel .panel-actions {
  margin-top: 14px;
}

.transcript-panel .panel-actions button {
  white-space: nowrap;
}

#articles-status,
#ocr-status {
  word-break: break-word;
}

.result-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.articles-actions {
  margin-top: 12px;
}

.exported-articles {
  margin-top: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
}

.exported-articles-list {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.exported-article-link {
  justify-content: flex-start;
  width: 100%;
  text-align: left;
  word-break: break-word;
}

.progress-block {
  margin-bottom: 14px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,0.58);
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
}

.progress-track {
  height: 12px;
  border-radius: 999px;
  background: #eadfd2;
  overflow: hidden;
}

.progress-bar {
  width: 0%;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary) 0%, #d39665 100%);
  transition: width 220ms ease;
}

.progress-track-indeterminate {
  position: relative;
}

.progress-bar-indeterminate {
  width: 28%;
  animation: indeterminate-slide 1.1s ease-in-out infinite;
}

.split-loading-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.split-spinner {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(143, 61, 46, 0.18);
  border-top-color: var(--primary);
  animation: split-spin 0.8s linear infinite;
}

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

@keyframes indeterminate-slide {
  0% {
    transform: translateX(-130%);
  }
  100% {
    transform: translateX(360%);
  }
}

@media (max-width: 1180px) {
  .hero,
  .preview-grid,
  .auth-form {
    grid-template-columns: 1fr;
  }

  .sidebar,
  .library-controls,
  .admin-progress {
    grid-template-columns: 1fr;
  }

  .preview-stage {
    min-height: 420px;
  }
}

@media (max-width: 720px) {
  .shell {
    padding: 14px;
  }

  .panel,
  .auth-panel,
  .hero-copy,
  .hero-status {
    padding: 16px;
    border-radius: 22px;
  }

  .panel-head,
  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .upload-card {
    grid-template-columns: 1fr;
  }
}