/*
 * 作用：三栏工作室的样式（书库 / 阅读 / 转换）。
 * 要解决：外层锁死一屏高，滚动只发生在栏里面，避免整页再出一条滚动条。
 */

/* ── Design tokens ── */
:root,
[data-theme="light"] {
  --bg: #eef1f4;
  --bg-deep: #e4e8ec;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-solid: #fafbfc;
  --ink: #0f1419;
  --muted: #5c6670;
  --line: rgba(15, 20, 25, 0.1);
  --accent: #008f7a;
  --accent-bright: #00b894;
  --accent-ink: #ffffff;
  --accent-glow: rgba(0, 143, 122, 0.18);
  --danger: #c0392b;
  --warn: #b8860b;
  --radius: 14px;
  --radius-sm: 10px;
  --font: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --shadow: 0 1px 0 rgba(15, 20, 25, 0.04), 0 8px 32px rgba(15, 20, 25, 0.06);
  --grid: rgba(0, 143, 122, 0.06);
  --header-bg: rgba(250, 251, 252, 0.82);
  --bezel: linear-gradient(155deg, #3a3f44, #121416);
}

[data-theme="dark"] {
  --bg: #0a0c0f;
  --bg-deep: #060809;
  --surface: rgba(18, 22, 28, 0.92);
  --surface-solid: #12161c;
  --ink: #e8ecf0;
  --muted: #8b949e;
  --line: rgba(232, 236, 240, 0.1);
  --accent: #00d4aa;
  --accent-bright: #2ee8c5;
  --accent-ink: #041210;
  --accent-glow: rgba(0, 212, 170, 0.22);
  --danger: #ff6b6b;
  --warn: #e8c547;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.4), 0 12px 40px rgba(0, 0, 0, 0.45);
  --grid: rgba(0, 212, 170, 0.04);
  --header-bg: rgba(10, 12, 15, 0.88);
  --bezel: linear-gradient(155deg, #1e242c, #080a0d);
}

* { box-sizing: border-box; }
/* 作用：强制 hidden 元素不显示。
   要解决：按钮样式会盖掉浏览器自带的 hidden，清空按钮一直露着，把栏撑出横向滚动条。 */
[hidden] { display: none !important; }
html, body {
  height: 100%;
  height: 100dvh;
  max-height: 100dvh;
  margin: 0;
  overflow: hidden;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-glow), transparent 60%),
    var(--bg);
  background-size: 24px 24px, 24px 24px, 100% 100%, 100% 100%;
  -webkit-font-smoothing: antialiased;
}

.mono { font-family: var(--mono); font-size: 0.85em; }
.muted { color: var(--muted); }
.muted.tight { margin: 0; font-size: 12px; line-height: 1.45; }
code { font-family: var(--mono); font-size: 0.85em; color: var(--accent-bright); }

.app-shell {
  height: 100%;
  max-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.app-header {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  flex-shrink: 0;
  z-index: 100;
}

.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-glyph {
  width: 32px; height: 32px; border-radius: 9px;
  background: var(--bezel);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08), 0 0 20px var(--accent-glow);
  flex-shrink: 0;
}
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: -0.03em; }
.brand-tag { font-family: var(--mono); font-size: 10px; color: var(--muted); letter-spacing: 0.04em; }

.header-meta { display: flex; gap: 8px; flex: 1; flex-wrap: wrap; justify-content: center; }
.chip {
  font-size: 11px; font-weight: 500; padding: 5px 10px;
  border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface); color: var(--muted);
}

.theme-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--line); background: var(--surface);
  color: var(--ink); border-radius: 999px; padding: 7px 14px;
  font: 500 13px var(--font); cursor: pointer; flex-shrink: 0;
}
[data-theme="light"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
.theme-label { font-size: 12px; color: var(--muted); }

.workspace {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 280px) minmax(0, 1fr) minmax(0, 340px);
  gap: 0;
  min-height: 0;
  overflow: hidden;
}

.zone {
  display: flex; flex-direction: column; min-height: 0;
  border-right: 1px solid var(--line);
  background: var(--surface);
  backdrop-filter: blur(8px);
}
.zone:last-child { border-right: 0; }

.zone-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 10px; padding: 16px 16px 12px;
  border-bottom: 1px solid var(--line); flex-shrink: 0;
}
.zone-head h2 {
  margin: 0; font-size: 14px; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent-bright);
}
.zone-desc { margin: 4px 0 0; font-size: 12px; color: var(--muted); }
.zone-actions { display: flex; gap: 4px; }
.zone-foot { padding: 8px 16px 12px; font-size: 11px; border-top: 1px solid var(--line); flex-shrink: 0; }

.library-list {
  flex: 1; overflow-y: auto; overscroll-behavior: contain;
  padding: 8px; display: flex; flex-direction: column; gap: 6px; min-height: 0;
  outline: 2px dashed transparent; outline-offset: -2px;
  transition: outline-color 0.15s, background 0.15s;
}
.library-list.drag-over { outline-color: var(--accent-bright); background: var(--accent-glow); }

.book-card {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 8px; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: var(--surface-solid);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.book-card:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); box-shadow: 0 0 0 1px var(--accent-glow); }
.book-card.active { border-color: var(--accent-bright); box-shadow: 0 0 16px var(--accent-glow); }
.book-card .thumb {
  width: 48px; height: 64px; flex: 0 0 48px;
  border-radius: 6px; background: var(--bg-deep);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; font-size: 9px; color: var(--muted);
}
.book-card .thumb img {
  display: block; width: 100%; height: 100%;
  max-width: 100%; max-height: 100%;
  object-fit: contain; object-position: center;
  cursor: zoom-in;
}
.book-card .body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.book-card h3 {
  margin: 0; font-size: 13px; font-weight: 600; line-height: 1.3;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.book-card .meta-line { font-family: var(--mono); font-size: 10px; color: var(--muted); }
.book-card .actions { display: flex; gap: 4px; margin-top: auto; padding-top: 4px; flex-wrap: wrap; }
.book-card .actions .btn { padding: 4px 8px; font-size: 11px; border-radius: 6px; }

.cover-pick {
  display: flex; flex-direction: column; gap: 4px;
  font-size: 11px; color: var(--muted); margin: 8px 0;
}
.cover-pick-row {
  display: flex; align-items: center; gap: 6px; flex-wrap: nowrap;
  min-width: 0; max-width: 100%;
}
.cover-pick .file-btn { flex: 0 0 auto; }
.cover-pick .muted { font-size: 10px; }

.empty { color: var(--muted); padding: 32px 16px; text-align: center; font-size: 13px; }

.zone-reader { background: color-mix(in srgb, var(--bg-deep) 40%, var(--surface)); overflow: hidden; min-width: 0; }
.reader-controls { display: flex; align-items: flex-end; gap: 8px; flex-wrap: wrap; }
.inline-field {
  display: flex; flex-direction: column; gap: 3px;
  font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em;
}
.inline-field select {
  font: 500 12px var(--font); padding: 6px 8px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--surface-solid); color: var(--ink); min-width: 130px;
}
.epd-nav { display: flex; gap: 4px; }

.reader-stage {
  flex: 1; display: flex; flex-direction: row; align-items: flex-start;
  justify-content: center; gap: 16px; padding: 16px; min-height: 0; overflow: auto;
}
.epd-main { flex: 0 0 auto; display: flex; flex-direction: column; align-items: center; flex-shrink: 0; }
.epd-bezel {
  position: relative; padding: 12px; border-radius: 18px;
  background: var(--bezel); box-shadow: var(--shadow), 0 0 48px var(--accent-glow);
  flex-shrink: 0;
}
.epd-scanline {
  pointer-events: none; position: absolute; inset: 12px; border-radius: 4px;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
}
/* 作用：画布永远是设备那块 480×800。
   要解决：跟着视口缩放后，预览排版会和真机对不上。 */
#epd-canvas {
  display: block;
  width: 480px;
  height: 800px;
  max-width: none;
  max-height: none;
  flex-shrink: 0;
  image-rendering: pixelated;
  background: #efebe0;
  touch-action: none;
}
.epd-status-line { margin: 10px 0 0; font-family: var(--mono); font-size: 11px; color: var(--muted); text-align: center; }

.epd-toc-panel {
  flex: 0 0 200px; width: 200px; display: flex; flex-direction: column; min-height: 0;
  height: 824px;
  max-height: 824px;
  flex-shrink: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm); background: var(--surface-solid); padding: 12px;
}
.epd-toc-head { flex-shrink: 0; margin-bottom: 8px; }
.epd-toc-title { font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent-bright); }
.epd-toc-list { flex: 1; min-height: 0; max-height: none; }

.toc-list { overflow-y: auto; overscroll-behavior: contain; display: flex; flex-direction: column; gap: 2px; scrollbar-gutter: stable; }
.toc-item {
  border: 0; background: transparent; text-align: left; color: var(--ink);
  padding: 7px 10px; border-radius: 8px; font: 500 12px var(--font); cursor: pointer; line-height: 1.35;
}
.toc-item:hover { background: var(--accent-glow); }
.toc-item.active { background: var(--accent); color: var(--accent-ink); }

.zone-convert { overflow: hidden; min-width: 0; }
/* 作用：转换栏内容变长时还能滚轮上下滚。
   要解决：不要画出滚动条轨道，栏底不再出现那条横条。 */
.convert-scroll {
  flex: 1;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 12px 16px 20px;
  min-height: 0;
  min-width: 0;
  scrollbar-width: none;
}
.convert-scroll::-webkit-scrollbar { display: none; }
.convert-scroll form,
.convert-scroll .status { max-width: 100%; min-width: 0; }
.font-convert-head {
  margin: 22px 0 10px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.font-convert-head span:first-child { font-size: 13px; font-weight: 600; color: var(--ink); }

.drop {
  position: relative; display: block; margin: 0;
  border: 1.5px dashed color-mix(in srgb, var(--accent) 35%, var(--line));
  border-radius: var(--radius-sm); padding: 20px 12px; text-align: center; cursor: pointer;
  background: var(--accent-glow); transition: border-color 0.15s, background 0.15s;
}
.drop:hover, .drop.drag { border-color: var(--accent-bright); background: color-mix(in srgb, var(--accent) 12%, transparent); }
.drop input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}
.drop-inner { display: flex; flex-direction: column; gap: 4px; pointer-events: none; }
.drop-inner strong { font-size: 13px; }

.batch-queue {
  margin: 0 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-solid);
  overflow: hidden;
}
.batch-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px; padding: 8px 10px; border-bottom: 1px solid var(--line);
  font-size: 12px; font-weight: 600;
}
.batch-list {
  list-style: none; margin: 0; padding: 0;
  max-height: 180px; overflow-x: hidden; overflow-y: auto;
  overscroll-behavior: contain; scrollbar-width: none;
}
.batch-list::-webkit-scrollbar { display: none; }
.batch-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto auto;
  gap: 8px; align-items: center;
  padding: 6px 10px;
  font-size: 12px;
  border-top: 1px solid var(--line);
}
.batch-item:first-child { border-top: 0; }
.batch-name {
  min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-weight: 500;
}
.batch-size { color: var(--muted); font-family: var(--mono); font-size: 11px; }
.batch-state { color: var(--muted); font-size: 11px; white-space: nowrap; }
.batch-item.is-run .batch-state { color: var(--accent-bright); }
.batch-item.is-ok .batch-state { color: var(--accent); }
.batch-item.is-err .batch-state, .batch-item.is-skip .batch-state { color: var(--danger); }
.batch-item .btn.icon-btn { width: 24px; height: 24px; font-size: 12px; }
.convert-btn-row { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }

.fields { display: grid; gap: 10px; margin: 10px 0; min-width: 0; }
.fields.cols-2 { grid-template-columns: 1fr 1fr; }
label {
  display: flex; flex-direction: column; gap: 4px; min-width: 0;
  font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em;
}
input[type="text"], input[type="number"], select {
  border: 1px solid var(--line); background: var(--surface-solid); color: var(--ink);
  border-radius: 8px; padding: 8px 10px; font: 500 13px var(--font);
  text-transform: none; letter-spacing: normal;
  width: 100%; max-width: 100%; min-width: 0;
}
/* 作用：封面框看起来像输入框，但不能改。
   要解决：尺寸写死 240×320，灰底告诉用户这里不是选项。 */
input[type="text"]:disabled {
  color: var(--muted);
  background: color-mix(in srgb, var(--bg-deep) 55%, var(--surface-solid));
  cursor: default;
}

.fold { border: 1px solid var(--line); border-radius: var(--radius-sm); margin: 10px 0; padding: 0 12px 10px; background: var(--surface-solid); }
.fold summary { cursor: pointer; font-size: 12px; font-weight: 600; padding: 10px 0; color: var(--muted); list-style: none; }
.fold summary::-webkit-details-marker { display: none; }
.scan-box, .binarize-box {
  border: 0; padding: 10px 0 0; margin: 12px 0 0; border-top: 1px solid var(--line);
  min-width: 0; max-width: 100%;
}
.scan-box legend, .binarize-box legend { font-size: 11px; color: var(--muted); padding: 0; }
.binarize-extra { display: flex; align-items: center; gap: 10px; margin: 6px 0; }
.binarize-extra label { margin: 0; }
.look-cards { display: grid; gap: 8px; margin: 8px 0 0; }
.look-cards-2 { grid-template-columns: 1fr 1fr; }
.look-cards-3 { grid-template-columns: repeat(3, 1fr); margin-bottom: 10px; }
.look-card {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px; min-height: 72px; padding: 12px 8px;
  border: 1px solid var(--line); border-radius: 16px;
  background: var(--surface-solid); color: var(--ink);
  cursor: pointer; text-align: center; font: 600 14px var(--font);
  box-shadow: 0 1px 0 rgba(15, 20, 25, 0.04);
}
.look-cards-2 .look-card { min-height: 100px; }
.look-card strong { font-size: 15px; font-weight: 700; letter-spacing: 0.02em; }
.look-card span {
  font-size: 11px; font-weight: 400; line-height: 1.35; color: var(--muted);
}
.look-card.is-on {
  background: var(--accent); border-color: transparent; color: var(--accent-ink);
  box-shadow: 0 8px 20px var(--accent-glow);
}
.look-card.is-on span { color: color-mix(in srgb, var(--accent-ink) 78%, transparent); }
.look-card:hover:not(.is-on) {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}
.look-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.binarize-advanced { margin: 0 0 10px; }
#preview-pages-hint, #preview-size-hint { margin: 0 0 6px; font-size: 11px; }

.check {
  flex-direction: row; align-items: center; gap: 8px; color: var(--ink);
  font-size: 13px; text-transform: none; letter-spacing: normal; margin: 8px 0;
}
.checks { display: flex; flex-wrap: wrap; gap: 8px 14px; margin: 8px 0 12px; }

.preview-actions {
  display: flex; align-items: center; gap: 8px; margin: 8px 0;
  flex-wrap: wrap; min-width: 0;
}
#preview-status { min-width: 0; overflow-wrap: anywhere; }
/* 作用：大图缩成小预览格，点开再看原像素。
   要解决：360×600 按原尺寸放还是太大，滚动条和勾选框挤在一起。 */
.preview-grid {
  display: block;
  min-width: 0;
  max-width: 100%;
}
.preview-grid figure {
  display: inline-block;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  vertical-align: top;
}
.preview-grid figcaption { font-size: 10px; padding: 4px 6px; background: var(--bg-deep); color: var(--muted); }
.preview-grid img {
  display: block;
  width: auto;
  height: auto;
  max-width: 132px;
  max-height: 176px;
  object-fit: contain;
  cursor: zoom-in;
}
.cover-strip {
  display: flex; gap: 6px; margin-top: 8px; padding-bottom: 6px;
  min-width: 0; max-width: 100%;
  overflow-x: auto; overflow-y: hidden;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}
.cover-thumb {
  flex: 0 0 auto; width: 52px; height: 70px; padding: 0;
  border: 1px solid var(--line); border-radius: 8px;
  overflow: hidden; background: var(--bg-deep);
  cursor: pointer; color: var(--muted);
  font: 500 9px/1.2 var(--font);
}
.cover-thumb span {
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%; padding: 4px; text-align: center;
}
.cover-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.cover-thumb.is-on { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.viewer-container { z-index: 4000; }

.btn {
  border: 1px solid var(--line); background: var(--surface-solid); color: var(--ink);
  border-radius: var(--radius-sm); padding: 8px 14px; font: 600 13px var(--font);
  cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
  transition: background 0.12s, border-color 0.12s;
}
.btn:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.btn.primary { background: var(--accent); border-color: transparent; color: var(--accent-ink); }
.btn.primary:hover { background: var(--accent-bright); color: var(--accent-ink); }
.btn.ghost { background: transparent; }
.btn.block { width: 100%; }
.convert-hint { margin: 8px 0 0; }
.convert-warn {
  margin: 6px 0 12px;
  font-size: 12px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--warn);
}
.btn.sm { padding: 5px 10px; font-size: 12px; }
.btn.icon-btn { width: 32px; height: 32px; padding: 0; font-size: 14px; border-radius: 8px; }
.btn.icon-btn svg.icon {
  width: 16px;
  height: 16px;
  display: block;
  pointer-events: none;
}
.file-btn { position: relative; overflow: hidden; }
.file-btn input[type="file"] {
  position: absolute; inset: 0; width: 100%; height: 100%;
  opacity: 0; cursor: pointer; margin: 0;
}
.btn.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--line)); }
.btn:disabled { opacity: 0.5; cursor: wait; }
#btn-open-ebook-label { margin: 0; cursor: pointer; }

.status { margin-top: 12px; padding: 12px; border-radius: var(--radius-sm); border: 1px solid var(--line); font-size: 13px; background: var(--surface-solid); }
.status.ok { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }
.status.err { border-color: color-mix(in srgb, var(--danger) 50%, var(--line)); color: var(--danger); }
.progress-wrap { height: 6px; border-radius: 999px; background: var(--bg-deep); overflow: hidden; margin-bottom: 8px; }
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-bright)); transition: width 0.25s ease; }
.progress-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
  min-width: 0;
}
.progress-left {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex: 0 0 auto;
  max-width: 46%;
}
#progress-pct { font-family: var(--mono); color: var(--accent-bright); font-weight: 600; flex: 0 0 auto; }
.progress-time {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
#progress-msg {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: right;
}
.progress-log { margin: 0; white-space: pre-wrap; font-size: 12px; line-height: 1.5; font-family: var(--mono); }
.progress-log.is-compact {
  max-height: 88px;
  overflow-x: hidden;
  overflow-y: auto;
  margin-top: 8px;
  color: var(--muted);
  scrollbar-width: thin;
}
.convert-task-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  max-height: 280px;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}
.convert-task {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  font-size: 12px;
  border-top: 1px solid var(--line);
}
.convert-task:first-child { border-top: 0; }
.convert-task-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.convert-task-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}
.convert-task-meta { color: var(--muted); font-family: var(--mono); font-size: 11px; }
.convert-task-state { color: var(--muted); font-size: 11px; white-space: nowrap; max-width: 12em; overflow: hidden; text-overflow: ellipsis; }
.convert-task.is-run .convert-task-state { color: var(--accent-bright); }
.convert-task.is-ok .convert-task-state { color: var(--accent); }
.convert-task.is-err .convert-task-state,
.convert-task.is-skip .convert-task-state { color: var(--danger); }
.convert-task-actions { display: flex; gap: 4px; flex-shrink: 0; }
.convert-task-actions:empty { width: 0; overflow: hidden; }
.convert-actions { display: flex; gap: 8px; margin-top: 10px; }

@media (max-width: 1200px) {
  .workspace {
    grid-template-columns: 240px 1fr;
    grid-template-rows: minmax(0, 1fr) minmax(200px, 36vh);
  }
  .zone-convert { grid-column: 1 / -1; border-right: 0; border-top: 1px solid var(--line); }
}

.update-overlay {
  position: fixed;
  inset: 0;
  z-index: 4000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: color-mix(in srgb, var(--bg-deep) 72%, transparent);
  backdrop-filter: blur(8px);
}
.update-card {
  width: min(420px, 100%);
  padding: 22px 22px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface-solid);
  box-shadow: var(--shadow);
}
.update-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  letter-spacing: -0.02em;
}
.update-card p {
  margin: 0 0 16px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
}

@media (max-width: 768px) {
  .workspace { grid-template-columns: 1fr; grid-template-rows: minmax(0, 28vh) minmax(0, 1fr) minmax(200px, 36vh); }
  .zone-library, .zone-reader, .zone-convert { border-right: 0; border-bottom: 1px solid var(--line); }
  .reader-stage { flex-direction: column; align-items: flex-start; overflow-x: auto; overflow-y: auto; }
  .epd-toc-panel { width: 200px; flex: none; height: 824px; max-height: 824px; }
  .fields.cols-2 { grid-template-columns: 1fr; }
  .preview-grid img { max-width: 120px; max-height: 160px; }
  .header-meta { display: none; }
}