:root {
  color-scheme: light;
  --accent: #2f7776;
  --accent-deep: #195456;
  --accent-bright: #d9824b;
  --accent-rgb: 47, 119, 118;
  --shadow-rgb: 34, 73, 72;
  --page-bg: #f5f4ef;
  --page-start: #fffdf8;
  --page-end: #ecefe9;
  --paper: rgba(255, 255, 255, 0.72);
  --panel: rgba(255, 255, 255, 0.86);
  --panel-strong: #ffffff;
  --panel-soft: rgba(var(--accent-rgb), 0.075);
  --panel-entry: rgba(255, 255, 255, 0.68);
  --version-heading: rgba(255, 255, 255, 0.42);
  --input-surface: rgba(255, 255, 255, 0.28);
  --input-surface-focus: rgba(255, 255, 255, 0.58);
  --ink: #203533;
  --muted: #687a76;
  --line: rgba(var(--accent-rgb), 0.18);
  --shadow: 0 18px 44px rgba(var(--shadow-rgb), 0.11);
  --shadow-soft: 0 10px 26px rgba(var(--shadow-rgb), 0.08);
  --focus: rgba(var(--accent-rgb), 0.18);
  --danger: #a54949;
  --danger-deep: #8e3939;
  --add: #4f8b72;
  --add-deep: #36715b;
  --slider-thumb: rgba(54, 113, 91, 0.86);
  --slider-thumb-border: rgba(54, 113, 91, 0.92);
  --source: rgba(235, 239, 232, 0.92);
  --reference: rgba(238, 228, 202, 0.9);
  --row-a: rgba(255, 236, 184, 0.82);
  --row-b: rgba(205, 232, 237, 0.84);
  --row-c: rgba(217, 236, 206, 0.86);
  --row-d: rgba(248, 218, 219, 0.82);
  --row-e: rgba(229, 222, 244, 0.86);
  --source-head: rgba(217, 224, 215, 0.96);
  --reference-head: rgba(223, 209, 174, 0.96);
  --row-number-bg: rgba(223, 232, 224, 0.6);
  --row-number-head-bg: rgba(224, 230, 224, 0.92);
  --row-a-head: rgba(246, 214, 137, 0.94);
  --row-b-head: rgba(174, 218, 226, 0.94);
  --row-c-head: rgba(190, 222, 174, 0.94);
  --row-d-head: rgba(239, 193, 196, 0.94);
  --row-e-head: rgba(207, 197, 235, 0.94);
  --llm: #6c619e;
  --llm-strong: #554987;
}

:root.dark-mode,
body.dark-mode {
  color-scheme: dark;
  --accent: #79d0c9;
  --accent-deep: #9ee1dc;
  --accent-bright: #f0b66f;
  --accent-rgb: 121, 208, 201;
  --shadow-rgb: 0, 0, 0;
  --page-bg: #101d1f;
  --page-start: #152a2d;
  --page-end: #0b1314;
  --paper: rgba(20, 37, 39, 0.72);
  --panel: rgba(24, 43, 45, 0.9);
  --panel-strong: #20383a;
  --panel-soft: rgba(var(--accent-rgb), 0.11);
  --panel-entry: rgba(23, 42, 44, 0.9);
  --version-heading: rgba(var(--accent-rgb), 0.12);
  --input-surface: rgba(11, 24, 26, 0.44);
  --input-surface-focus: rgba(16, 36, 38, 0.74);
  --ink: #eef9f6;
  --muted: #b4cac7;
  --line: rgba(var(--accent-rgb), 0.23);
  --shadow: 0 18px 44px rgba(0, 0, 0, 0.32);
  --shadow-soft: 0 10px 26px rgba(0, 0, 0, 0.24);
  --focus: rgba(var(--accent-rgb), 0.24);
  --danger: #c25d5d;
  --danger-deep: #d07171;
  --add: #6bb394;
  --add-deep: #83c7ab;
  --slider-thumb: rgba(131, 199, 171, 0.86);
  --slider-thumb-border: rgba(131, 199, 171, 0.92);
  --source: rgba(48, 61, 56, 0.92);
  --reference: rgba(72, 65, 48, 0.86);
  --row-a: rgba(113, 85, 32, 0.62);
  --row-b: rgba(42, 87, 96, 0.66);
  --row-c: rgba(55, 91, 47, 0.66);
  --row-d: rgba(105, 55, 60, 0.66);
  --row-e: rgba(77, 63, 113, 0.68);
  --source-head: rgba(60, 72, 66, 0.98);
  --reference-head: rgba(88, 78, 54, 0.96);
  --row-number-bg: rgba(45, 61, 57, 0.88);
  --row-number-head-bg: rgba(58, 73, 68, 0.96);
  --row-a-head: rgba(164, 125, 48, 0.92);
  --row-b-head: rgba(69, 133, 145, 0.94);
  --row-c-head: rgba(91, 139, 76, 0.94);
  --row-d-head: rgba(153, 82, 88, 0.94);
  --row-e-head: rgba(113, 96, 157, 0.94);
  --llm: #8d7bd0;
  --llm-strong: #a693e2;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--page-bg);
}

body {
  min-height: 100svh;
  margin: 0;
  color: var(--ink);
  background: transparent;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.share-dialog {
  width: min(96vw, 720px);
  padding: 0;
  border: 0;
  border-radius: 24px;
  color: var(--ink);
  background: transparent;
  box-shadow: var(--shadow);
}

.share-dialog::backdrop {
  background: rgba(17, 35, 35, 0.58);
  backdrop-filter: blur(5px);
}

.share-dialog-card {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 16px;
  margin: 0;
  padding: 28px;
  background: var(--panel-strong);
  text-align: center;
}

.share-dialog-card h2,
.share-dialog-card p { margin: 0; }
.share-dialog-card label { display: grid; width: 100%; gap: 7px; text-align: left; }
.share-dialog-card input { width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); background: var(--input-surface); }
.share-dialog-close { position: absolute; top: 12px; right: 12px; min-width: 40px; padding: 5px; font-size: 24px; }
.share-qr { width: min(540px, 86vw); aspect-ratio: 1; padding: 12px; border-radius: 20px; background: white; }
.share-qr svg { display: block; width: 100%; height: 100%; }
.share-url { max-width: 100%; color: var(--accent); overflow-wrap: anywhere; }
.share-expiry { color: var(--muted); }
.share-error { color: var(--danger); }
.saved-links-dialog { width: min(96vw, 920px); }
.saved-links-list { display: grid; width: 100%; max-height: 68vh; gap: 8px; overflow-y: auto; text-align: left; }
.saved-link-item { display: grid; gap: 6px; padding: 11px 12px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.saved-link-title { width: 100%; min-height: 36px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); background: var(--input-surface); font-weight: 800; }
.saved-link-preview { margin: 0; overflow: hidden; color: var(--muted); line-height: 1.35; text-overflow: ellipsis; white-space: nowrap; }
.saved-link-meta { color: var(--muted); font-size: 12px; }
.saved-link-controls { display: flex; flex-wrap: nowrap; align-items: center; gap: 6px; overflow-x: auto; padding-bottom: 2px; }
.saved-link-controls input[type="date"] { width: auto; min-width: 145px; min-height: 34px; padding: 5px 9px; border: 1px solid var(--line); border-radius: 999px; color: var(--ink); background: var(--input-surface); }
.saved-link-controls button { min-height: 34px; padding: 5px 11px; font-size: 13px; box-shadow: none; }
.saved-link-controls button:hover,
.saved-link-controls button:focus-visible { transform: none; border-color: rgba(var(--accent-rgb),.48); background: rgba(var(--accent-rgb),.13); color: var(--accent-deep); box-shadow: none; }
.saved-link-controls input[type="date"]:disabled { opacity: .5; }
.share-dialog-card .saved-link-never { display: inline-flex; width: auto; min-height: 34px; flex: 0 0 auto; align-items: center; gap: 7px; padding: 5px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: var(--panel-soft); cursor: pointer; font-size: 13px; font-weight: 750; }
.saved-link-never input { appearance: none; width: 36px; height: 20px; margin: 0; border: 1px solid rgba(var(--accent-rgb),.28); border-radius: 999px; background: radial-gradient(circle at 10px 50%,#fff 0 6px,transparent 7px),rgba(var(--accent-rgb),.18); cursor: pointer; transition: background .18s ease,border-color .18s ease; }
.saved-link-never input:checked { border-color: var(--accent); background: radial-gradient(circle at 26px 50%,#fff 0 6px,transparent 7px),var(--accent); }
.saved-link-never input:focus-visible { outline: 2px solid rgba(var(--accent-rgb),.42); outline-offset: 2px; }
.saved-link-delete { color: var(--danger); }
.saved-link-status { min-width: 48px; color: var(--muted); font-size: 12px; font-weight: 750; }
.saved-link-status.is-error { color: var(--danger); }
.saved-link-delete:hover,
.saved-link-delete:focus-visible { border-color: rgba(165,73,73,.42) !important; background: rgba(165,73,73,.1) !important; color: var(--danger-deep) !important; }

body.student-share-mode .export-actions,
body.student-share-mode .alignment-actions,
body.student-share-mode .insert-version-slot,
body.student-share-mode .remove-version {
  display: none !important;
}

body.student-share-mode .version-title[readonly],
body.student-share-mode .version-text[readonly],
body.student-share-mode #sourceText[readonly] {
  cursor: default;
}

body.student-share-mode .main-header-actions:not(.is-sticky) #diffToggleButton::after {
  right: 0;
  left: auto;
  transform: translateY(-4px);
}

body.student-share-mode .main-header-actions:not(.is-sticky) #diffToggleButton:hover::after,
body.student-share-mode .main-header-actions:not(.is-sticky) #diffToggleButton:focus-visible::after {
  transform: translateY(0);
}

html,
body {
  transition:
    background-color 0.22s ease,
    color 0.22s ease;
}

button,
input,
textarea {
  font: inherit;
}

button {
  min-height: 40px;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: 9999px;
  background: var(--panel);
  color: var(--accent);
  box-shadow: 0 8px 20px rgba(var(--shadow-rgb), 0.06);
  cursor: pointer;
  font-weight: 750;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
  background: var(--panel-strong);
  border-color: rgba(var(--accent-rgb), 0.32);
  box-shadow: 0 12px 26px rgba(var(--shadow-rgb), 0.1);
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(var(--accent-rgb), 0.42);
  outline-offset: 3px;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  align-items: center;
  gap: 18px;
  width: min(94vw, 1320px);
  margin: 0 auto;
  padding: clamp(16px, 3vw, 26px) 0 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.7vw, 18px);
  min-width: 0;
}

.brand-mark {
  flex: 0 0 auto;
  width: clamp(50px, 5.5vw, 62px);
  height: clamp(50px, 5.5vw, 62px);
}

.brand-copy {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.topbar h1 {
  margin: 0;
  color: var(--accent);
  font-size: clamp(30px, 4.2vw, 48px);
  font-weight: 780;
  line-height: 0.95;
  letter-spacing: 0;
  white-space: nowrap;
}

.topbar p {
  max-width: none;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.45;
  white-space: nowrap;
}

.actions,
.alignment-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  justify-content: flex-end;
}

.export-actions {
  position: relative;
}

.export-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 20;
  display: grid;
  gap: 8px;
  min-width: 148px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 40px rgba(var(--shadow-rgb), 0.16);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  opacity: 0;
  transform: translateY(-8px) scale(0.98);
  transform-origin: top right;
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.export-menu[hidden] {
  display: none;
}

.export-menu.is-open {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.export-menu button {
  justify-content: center;
  width: 100%;
  border-radius: 12px;
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--accent-deep);
  text-align: center;
}

.export-menu button:hover {
  background: rgba(var(--accent-rgb), 0.16);
  color: var(--accent-deep);
}

.dark-mode .export-menu {
  background: rgba(24, 43, 45, 0.86);
}

.dark-mode .export-menu button {
  background: rgba(var(--accent-rgb), 0.13);
  color: var(--accent-deep);
}

.dark-mode .export-menu button:hover {
  background: rgba(var(--accent-rgb), 0.2);
  color: var(--ink);
}

#exportMenuButton {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-color: rgba(var(--accent-rgb), 0.3);
  background: var(--accent);
  color: #f7fffb;
  box-shadow: 0 12px 28px rgba(var(--shadow-rgb), 0.13);
}

.header-export-icon {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#exportMenuButton:hover,
#exportMenuButton[aria-expanded="true"] {
  background: var(--accent-deep);
  color: #f7fffb;
  border-color: rgba(var(--accent-rgb), 0.45);
}

#exportMenuButton:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.export-actions:has(> button:not(:disabled))::after {
  content: "";
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  height: 10px;
}

.export-actions:has(> button:not(:disabled)):hover > .export-menu[hidden],
.export-actions:has(> button:not(:disabled)):focus-within > .export-menu[hidden] {
  display: grid;
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.pe-export-actions:has(> button:not(:disabled)):hover > .pe-export-menu[hidden],
.pe-export-actions:has(> button:not(:disabled)):focus-within > .pe-export-menu[hidden],
.post-editor-top-actions.is-sticky .export-actions:has(> button:not(:disabled)):hover > .pe-export-menu[hidden],
.post-editor-top-actions.is-sticky .export-actions:has(> button:not(:disabled)):focus-within > .pe-export-menu[hidden] {
  display: flex;
  opacity: 1;
  transform: translateX(0) scaleX(1);
  pointer-events: auto;
}

#diffToggleButton[aria-pressed="true"] {
  border-color: var(--accent-deep) !important;
  background: var(--accent-deep) !important;
  color: #f7fffb !important;
  box-shadow: 0 8px 18px rgba(var(--shadow-rgb), 0.14) !important;
}

#diffToggleButton[aria-pressed="false"] {
  border-color: rgba(var(--accent-rgb), 0.58);
  background: rgba(255, 255, 255, 0.72);
  color: var(--accent-deep);
  box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.08);
}

#diffToggleButton[aria-pressed="false"] .compiler-diff-icon {
  opacity: 1 !important;
}

#diffToggleButton[aria-pressed="true"] .compiler-diff-icon::after {
  background: rgba(247, 255, 251, 0.74) !important;
}

.dark-mode #diffToggleButton[aria-pressed="false"] {
  background: rgba(24, 43, 45, 0.72);
}

@keyframes floatingToolbarIn {
  from {
    opacity: 0;
    transform: translateY(-18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatingToolbarOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-18px);
  }
}

.compiler-diff-icon {
  font-size: 12px;
  font-weight: 850;
  letter-spacing: -1px;
}

.compiler-diff-icon::after {
  content: "";
  display: block;
  height: 3px;
  margin-top: 1px;
  border-radius: 3px;
  background: rgba(151, 72, 64, 0.58);
}

.main-header-actions {
  flex-wrap: nowrap;
}

.main-header-actions .tmx-icon-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  min-width: 42px;
  height: 42px;
  min-height: 42px;
  padding: 0;
  border-radius: 50%;
}

.main-header-actions:not(.is-sticky) .has-tip::after,
.post-editor-top-actions:not(.is-sticky) .has-tip::after,
.tmx-header-actions:not(.is-sticky) .has-tip::after,
.builder-header-actions:not(.is-sticky) .has-tip::after {
  top: calc(100% + 10px);
  bottom: auto;
  transform: translate(-50%, -4px);
}

.main-header-actions:not(.is-sticky) .has-tip:hover::after,
.main-header-actions:not(.is-sticky) .has-tip:focus-visible::after,
.post-editor-top-actions:not(.is-sticky) .has-tip:hover::after,
.post-editor-top-actions:not(.is-sticky) .has-tip:focus-visible::after,
.tmx-header-actions:not(.is-sticky) .has-tip:hover::after,
.tmx-header-actions:not(.is-sticky) .has-tip:focus-visible::after,
.builder-header-actions:not(.is-sticky) .has-tip:hover::after,
.builder-header-actions:not(.is-sticky) .has-tip:focus-visible::after {
  transform: translate(-50%, 0);
}

#exportMenuButton:hover,
.builder-export-button:hover {
  transform: none;
}

.topbar .actions button:hover {
  transform: none;
}

.main-header-actions.is-sticky,
.post-editor-top-actions.is-sticky,
.tmx-header-actions.is-sticky,
.builder-header-actions.is-sticky {
  animation: floatingToolbarIn 180ms ease-out both;
  transform-origin: top right;
}

.main-header-actions.is-sticky.is-leaving,
.post-editor-top-actions.is-sticky.is-leaving,
.tmx-header-actions.is-sticky.is-leaving,
.builder-header-actions.is-sticky.is-leaving {
  animation: floatingToolbarOut 150ms ease-in both;
  pointer-events: none;
}

.main-header-actions.is-sticky {
  position: fixed;
  top: 42px;
  right: max(3vw, 22px);
  z-index: 12;
  display: flex;
  flex-direction: column;
  padding: 3px;
  border: 1px solid rgba(var(--accent-rgb), 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.34);
  box-shadow: 0 6px 16px rgba(var(--shadow-rgb), 0.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.dark-mode .main-header-actions.is-sticky {
  background: rgba(24, 43, 45, 0.4);
}

.main-header-actions.is-sticky #exportMenuButton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  min-width: 42px;
  height: 42px;
  padding: 0;
  border-radius: 50%;
}

.main-header-actions.is-sticky .export-actions {
  position: relative;
}

.main-header-actions.is-sticky .export-actions::before {
  content: "";
  position: absolute;
  top: 0;
  right: 100%;
  width: 16px;
  height: 100%;
}

.main-header-actions.is-sticky #exportMenuButton span {
  display: none;
}

.main-header-actions.is-sticky .export-menu {
  inset: auto 50px 3px auto;
  display: flex;
  gap: 7px;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  opacity: 0;
  transform: translateX(20px) scaleX(0.9);
  transform-origin: right center;
  pointer-events: none;
}

.main-header-actions.is-sticky .export-menu.is-open,
.main-header-actions.is-sticky .export-actions:hover > .export-menu[hidden],
.main-header-actions.is-sticky .export-actions:focus-within > .export-menu[hidden] {
  display: flex;
  opacity: 1;
  transform: translateX(0) scaleX(1);
  pointer-events: auto;
}

.main-header-actions.is-sticky .export-menu button {
  width: auto;
  white-space: nowrap;
  border-color: rgba(var(--accent-rgb), 0.38);
  background: rgba(255, 255, 255, 0.94);
  color: var(--accent-deep);
  box-shadow: 0 8px 18px rgba(var(--shadow-rgb), 0.18);
}

.main-header-actions.is-sticky .has-tip::after {
  left: auto;
  right: calc(100% + 9px);
  bottom: auto;
  top: 50%;
  transform: translate(4px, -50%);
}

.main-header-actions.is-sticky .has-tip:hover::after,
.main-header-actions.is-sticky .has-tip:focus-visible::after {
  transform: translate(0, -50%);
}

#alignButton {
  border-color: transparent;
  background: var(--accent);
  color: #fffdf8;
  box-shadow: 0 12px 28px rgba(var(--accent-rgb), 0.2);
}

#alignButton:hover {
  background: var(--accent-deep);
}

#llmAlignButton {
  border-color: transparent;
  background: var(--llm);
  color: #fffdf8;
  box-shadow: 0 12px 28px rgba(79, 68, 139, 0.18);
}

#llmAlignButton:hover {
  background: var(--llm-strong);
}

#llmAlignButton.is-loading {
  cursor: wait;
  opacity: 0.72;
}

.has-tip {
  position: relative;
}

.has-tip::after {
  content: attr(data-tip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  z-index: 30;
  width: max-content;
  max-width: min(260px, calc(100vw - 32px));
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-strong);
  color: var(--ink);
  box-shadow: 0 10px 24px rgba(var(--shadow-rgb), 0.12);
  font-size: 12px;
  font-weight: 750;
  line-height: 1.35;
  text-align: center;
  white-space: normal;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 4px);
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.alignment-actions .has-tip:last-child::after {
  right: 0;
  left: auto;
  transform: translateY(4px);
}

.has-tip:hover::after,
.has-tip:focus-visible::after {
  opacity: 1;
  transform: translate(-50%, 0);
}

.alignment-actions .has-tip:last-child:hover::after,
.alignment-actions .has-tip:last-child:focus-visible::after {
  transform: translateY(0);
}

main {
  width: min(94vw, 1320px);
  margin: 0 auto;
  padding: 8px 0 38px;
}

.workspace {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: stretch;
  padding: 0;
  background: transparent;
  --version-edge-offset: 22px;
  --version-card-min: 220px;
  --version-card-ideal: clamp(230px, 18vw, 320px);
}

.source-drawer-toggle {
  min-height: 30px;
  width: calc(100% - (var(--version-edge-offset) * 2));
  margin: 0 var(--version-edge-offset);
  padding: 4px 16px;
  border-color: rgba(var(--accent-rgb), 0.14);
  border-radius: 9999px;
  background: rgba(var(--accent-rgb), 0.055);
  color: var(--muted);
  box-shadow: none;
  font-size: 13px;
  font-weight: 800;
}

.source-drawer-toggle::before,
.source-drawer-toggle::after {
  content: "";
  display: inline-block;
  width: min(120px, 20vw);
  height: 1px;
  margin: 0 12px;
  background: rgba(var(--accent-rgb), 0.18);
  vertical-align: middle;
}

.source-drawer-toggle:hover,
.source-drawer-toggle[aria-expanded="true"] {
  background: rgba(var(--accent-rgb), 0.09);
  color: var(--accent);
  box-shadow: none;
}

.source-panel {
  width: calc(100% - (var(--version-edge-offset) * 2));
  margin: 0 var(--version-edge-offset);
  max-height: 340px;
  opacity: 1;
  transform: translateY(0);
  transition:
    max-height 0.3s ease,
    opacity 0.22s ease,
    transform 0.28s ease,
    margin 0.3s ease;
}

.version-inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(var(--version-card-min), 1fr));
  align-items: stretch;
  gap: 14px;
  min-width: 0;
  padding: 0 var(--version-edge-offset);
  position: relative;
}

.version-inputs .version-panel {
  width: 100%;
  min-width: var(--version-card-min);
}

.insert-version-slot {
  position: absolute;
  z-index: 3;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: -17px 0 0 -17px;
  pointer-events: none;
}

.insert-version-button,
.insert-row-button,
.delete-row,
.remove-version {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-radius: 50%;
}

.insert-version-button {
  width: 34px;
  min-width: 34px;
  height: 34px;
  min-height: 34px;
  border-color: transparent;
  color: #f7fffb;
  background: var(--add);
  box-shadow: 0 12px 28px rgba(var(--shadow-rgb), 0.13);
  opacity: 0;
  transform: scale(0.86);
  transition: opacity 140ms ease, transform 140ms ease;
  pointer-events: auto;
  font-size: 22px;
  line-height: 0.82;
  padding-bottom: 3px;
}

.insert-version-button:hover,
.insert-row-button:hover {
  background: var(--add-deep);
  color: #f7fffb;
}

.insert-version-slot:hover .insert-version-button,
.insert-version-button:hover,
.insert-version-button:focus {
  opacity: 1;
  transform: scale(1);
}

.panel {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  border: 0;
  border-radius: 18px;
  background: var(--panel-entry);
  box-shadow: 0 10px 26px rgba(var(--shadow-rgb), 0.06);
  overflow: hidden;
}

.source-panel.is-hidden {
  min-height: 0;
  max-height: 0;
  margin-top: -12px;
  margin-bottom: -12px;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
}

.panel label,
.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 52px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(var(--accent-rgb), 0.12);
  color: var(--accent);
  font-weight: 800;
}

.panel-heading label {
  min-height: 0;
  flex: 1;
  padding: 0 0 0 24px;
  border-bottom: 0;
  position: relative;
}

.version-panel .panel-heading {
  background: var(--version-heading);
}

.panel-heading label::before,
.panel-heading label::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 15px;
  height: 15px;
  transform: translateY(-50%);
  transition:
    opacity 0.16s ease,
    transform 0.16s ease,
    background-color 0.16s ease;
  pointer-events: none;
}

.panel-heading label::before {
  border-radius: 50%;
  background: var(--version-marker, var(--accent));
  opacity: 0.95;
}

.panel-heading label::after {
  background: currentColor;
  opacity: 0;
  -webkit-mask: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 20h9'/%3E%3Cpath d='M16.5 3.5a2.1 2.1 0 0 1 3 3L7 19l-4 1 1-4Z'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 20h9'/%3E%3Cpath d='M16.5 3.5a2.1 2.1 0 0 1 3 3L7 19l-4 1 1-4Z'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
}

.panel-heading:hover label::before,
.panel-heading:focus-within label::before {
  opacity: 0;
  transform: translateY(-50%) scale(0.72);
}

.panel-heading:hover label::after,
.panel-heading:focus-within label::after {
  opacity: 0.56;
  transform: translateY(-50%) scale(1);
}

.panel label span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  text-transform: uppercase;
}

.version-title {
  width: 100%;
  padding: 3px 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  font-weight: 800;
}

.version-title:focus {
  outline: none;
}

.remove-version {
  width: 32px;
  height: 32px;
  min-height: 32px;
  padding-bottom: 2px;
  border-color: transparent;
  background: var(--danger);
  color: #fff6f4;
  font-size: 20px;
  line-height: 1;
  box-shadow: none;
}

.remove-version.is-confirming {
  width: auto;
  min-width: 74px;
  padding: 0 12px;
  border-radius: 9999px;
  font-size: 12px;
  line-height: 1;
}

.remove-version:hover,
.delete-row:hover {
  background: var(--danger-deep);
  color: #fff6f4;
}

textarea {
  width: 100%;
  min-height: 210px;
  resize: vertical;
  border: 0;
  padding: 14px 15px;
  color: var(--ink);
  background: var(--input-surface);
  line-height: 1.5;
}

.version-panel .version-text {
  flex: 1;
  border-radius: 0 0 18px 18px;
}

textarea:focus {
  outline: 0;
  background: var(--input-surface-focus);
  box-shadow: inset 0 0 0 2px var(--focus);
}

.controls {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) auto;
  align-items: center;
  gap: 14px;
  margin: 16px 0 12px;
  position: relative;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 10px 24px rgba(var(--shadow-rgb), 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.hint {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.hint.has-status {
  color: var(--accent);
  font-weight: 750;
}

.hint.is-working::after {
  content: "";
  display: inline-block;
  width: 1.35em;
  text-align: left;
  animation: workingDots 1.1s steps(4, end) infinite;
}

.hint.error {
  color: var(--danger);
}

.language-review-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 22px;
  background: rgba(20, 37, 39, 0.28);
  backdrop-filter: blur(8px);
}

.language-review-dialog {
  display: grid;
  gap: 14px;
  width: min(520px, 100%);
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel-strong);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.language-review-dialog h2 {
  margin: 0;
  color: var(--accent-deep);
  font-size: 20px;
  line-height: 1.2;
}

.language-review-dialog p,
.language-review-dialog ul {
  margin: 0;
}

.language-review-dialog p {
  color: var(--muted);
  line-height: 1.45;
}

.language-review-dialog ul {
  display: grid;
  gap: 8px;
  padding-left: 20px;
  line-height: 1.45;
}

.language-review-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 4px;
}

.language-review-continue {
  border-color: transparent;
  background: var(--accent);
  color: #f7fffb;
}

.language-review-continue:hover,
.language-review-continue:focus-visible {
  background: var(--accent-deep);
  color: #f7fffb;
}

body[data-desktop-app="true"] .language-review-backdrop {
  z-index: 90;
  background: rgba(10, 18, 20, .28);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

body[data-desktop-app="true"] .language-review-dialog {
  width: min(560px, calc(100vw - 40px));
  max-height: calc(100vh - 60px);
  overflow: auto;
  padding: 30px;
  border-radius: 28px;
  background: var(--panel-strong);
  box-shadow: 0 24px 64px rgba(var(--shadow-rgb), .22);
}

body[data-desktop-app="true"] .language-review-dialog h2 {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 30px;
  font-weight: 900;
  line-height: 1.08;
}

body[data-desktop-app="true"] .language-review-dialog p {
  margin: 0 0 4px;
  color: color-mix(in srgb, var(--ink) 72%, transparent);
  font-size: 15px;
  font-weight: 650;
}

body[data-desktop-app="true"] .language-review-dialog ul {
  gap: 9px;
  padding-left: 22px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 650;
}

body[data-desktop-app="true"] .language-review-actions {
  justify-content: flex-end;
  gap: 12px;
  margin-top: 28px;
}

body[data-desktop-app="true"] .language-review-actions button {
  height: 46px;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid rgba(var(--accent-rgb), .22);
  border-radius: 999px;
  background: rgba(255, 255, 255, .72);
  color: var(--accent);
  font: inherit;
  font-weight: 850;
  box-shadow: none;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}

body[data-desktop-app="true"] .language-review-actions .language-review-continue {
  background: var(--accent);
  color: #f7fffb;
}

body[data-desktop-app="true"] .language-review-actions button:hover,
body[data-desktop-app="true"] .language-review-actions button:focus-visible {
  box-shadow: 0 10px 22px rgba(18, 59, 62, .13);
  transform: translateY(-1px);
}

body[data-desktop-app="true"] .language-review-actions button:active {
  transform: translateY(0) scale(.97);
}

body[data-desktop-app="true"][data-palette="lavender"] .language-review-dialog {
  border-color: rgba(var(--accent-rgb), .18);
  background: var(--panel-strong);
  color: var(--ink);
  box-shadow: 0 24px 64px rgba(var(--shadow-rgb), .2);
}

body[data-desktop-app="true"].dark-mode[data-palette="lavender"] .language-review-dialog {
  border-color: rgba(var(--accent-rgb), .24);
  background: rgba(25, 23, 43, .96);
  color: var(--ink);
}

body[data-desktop-app="true"].dark-mode[data-palette="lavender"] .language-review-dialog p {
  color: color-mix(in srgb, var(--ink) 82%, transparent);
}

body[data-desktop-app="true"][data-icon-style="glass"] .language-review-dialog {
  border-color: rgba(255, 255, 255, .52) !important;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, .2), transparent 24% 78%, rgba(255, 255, 255, .1)),
    linear-gradient(-75deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .24) 48%, rgba(255, 255, 255, .08)),
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 22%, transparent), color-mix(in srgb, var(--accent-bright) 10%, transparent)),
    rgba(255, 255, 255, .58) !important;
  color: var(--ink) !important;
  box-shadow:
    inset 0 2px 2px rgba(0, 0, 0, .035),
    inset 0 -2px 2px rgba(255, 255, 255, .52),
    inset 0 0 0 4px rgba(255, 255, 255, .14),
    0 24px 58px rgba(var(--shadow-rgb), .18) !important;
  backdrop-filter: blur(22px) saturate(1.22);
  -webkit-backdrop-filter: blur(22px) saturate(1.22);
}

body[data-desktop-app="true"][data-icon-style="glass"] .language-review-actions button {
  border: 1px solid rgba(255, 255, 255, .42) !important;
  background:
    linear-gradient(-75deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .2) 48%, rgba(255, 255, 255, .06)),
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 28%, transparent), color-mix(in srgb, var(--accent-bright) 12%, transparent)),
    rgba(255, 255, 255, .14) !important;
  color: color-mix(in srgb, var(--accent-deep) 88%, var(--ink)) !important;
  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, .34),
    inset 0 -1px 1px rgba(0, 0, 0, .035),
    0 6px 14px rgba(var(--shadow-rgb), .1) !important;
  text-shadow: 0 1px 1px rgba(255, 255, 255, .22);
  backdrop-filter: blur(6px) saturate(1.12);
  -webkit-backdrop-filter: blur(6px) saturate(1.12);
}

body[data-desktop-app="true"][data-icon-style="glass"].dark-mode .language-review-dialog {
  border-color: rgba(255, 255, 255, .24) !important;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, .08), transparent 24% 78%, rgba(255, 255, 255, .04)),
    linear-gradient(-75deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .11) 48%, rgba(255, 255, 255, .04)),
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 14%, transparent), color-mix(in srgb, var(--accent-bright) 6%, transparent)),
    rgba(18, 15, 40, .76) !important;
  color: var(--ink) !important;
  box-shadow:
    inset 0 2px 2px rgba(255, 255, 255, .07),
    inset 0 -2px 2px rgba(0, 0, 0, .2),
    inset 0 0 0 4px rgba(255, 255, 255, .06),
    0 26px 62px rgba(0, 0, 0, .38) !important;
}

body[data-desktop-app="true"][data-icon-style="glass"].dark-mode .language-review-actions button {
  border-color: rgba(255, 255, 255, .18) !important;
  background:
    linear-gradient(-75deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .12) 48%, rgba(255, 255, 255, .04)),
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 16%, transparent), color-mix(in srgb, var(--accent-bright) 6%, transparent)),
    rgba(18, 15, 40, .48) !important;
  color: color-mix(in srgb, var(--ink) 82%, white) !important;
  text-shadow: 0 1px 1px rgba(0, 0, 0, .28);
  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, .08),
    inset 0 -1px 1px rgba(0, 0, 0, .18),
    0 7px 15px rgba(0, 0, 0, .24) !important;
}

.alignment-actions {
  justify-content: flex-end;
}

.display-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  justify-content: center;
  margin: -4px 0 12px;
}

.option-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 9999px;
  background: var(--panel-soft);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.option-toggle input {
  display: inline-grid;
  place-content: center;
  width: 22px;
  height: 22px;
  margin: 0;
  border: 2px solid rgba(var(--accent-rgb), 0.34);
  border-radius: 50%;
  appearance: none;
  background: rgba(255, 255, 255, 0.72);
  color: #fffdf8;
}

.option-toggle input::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: currentColor;
  transform: scale(0);
  transition: transform 0.16s ease;
}

.option-toggle input:checked {
  border-color: var(--accent);
  background: var(--accent);
}

.option-toggle input:checked::before {
  transform: scale(1);
}

.alignment-shell {
  box-sizing: border-box;
  overflow-x: visible;
  padding: 12px;
  position: relative;
  width: max(100%, calc(var(--alignment-shell-width, 100%) + 24px));
  margin-inline: auto;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.42);
  box-shadow: var(--shadow-soft);
}

.alignment-shell.is-empty {
  width: 100%;
}

.alignment-table {
  min-width: 780px;
  --alignment-text-size: 16px;
}

.whole-text-divider {
  z-index: 20 !important;
  width: 14px !important;
  margin-left: -7px !important;
  background: transparent;
  cursor: col-resize;
  pointer-events: auto !important;
  touch-action: none;
}

body.is-resizing-columns,
body.is-resizing-columns * {
  cursor: col-resize !important;
}

.empty-state {
  min-width: 0;
  padding: 34px;
  border-radius: 18px;
  background: var(--panel);
  color: var(--muted);
  text-align: center;
}

.grid {
  display: grid;
  grid-template-columns: 58px repeat(var(--columns), minmax(var(--column-width, 220px), 1fr));
  gap: 7px;
  align-items: stretch;
}

.cell {
  min-height: 54px;
  padding: 8px;
  border: 0;
  border-radius: 12px;
}

.head {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  font-weight: 800;
  text-align: center;
}

.alignment-table:not(.is-sticky-headers) .comparison-header {
  position: relative;
}

.comparison-selector {
  position: absolute;
  left: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  min-width: 24px;
  height: 24px;
  min-height: 24px;
  padding: 0;
  border: 2px solid rgba(var(--accent-rgb), 0.34);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: none;
}

.comparison-selector::before {
  content: "";
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: transparent;
  transform: scale(0);
  transition: background 160ms ease, transform 160ms ease;
}

.comparison-selector:hover {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.9);
}

.comparison-selector.is-selected {
  border-color: var(--accent);
  background: var(--accent);
}

.comparison-selector.is-selected::before {
  background: #fffdf8;
  transform: scale(1);
}

.dark-mode .comparison-selector {
  background: rgba(24, 43, 45, 0.72);
}

.dark-mode .comparison-selector.is-selected {
  background: var(--accent);
}

.alignment-table.is-sticky-headers .comparison-selector.has-tip::after {
  top: calc(100% + 8px);
  bottom: auto;
}

.alignment-table.is-sticky-headers .head {
  position: sticky;
  top: 12px;
  z-index: 5;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 8px 18px rgba(var(--shadow-rgb), 0.08),
    0 0 0 1px rgba(255, 255, 255, 0.28) inset;
}

.source-head {
  background: var(--source-head);
}

.reference-head {
  background: var(--reference-head);
}

.tone-head-0 {
  background: var(--row-a-head);
}

.tone-head-1 {
  background: var(--row-b-head);
}

.tone-head-2 {
  background: var(--row-c-head);
}

.tone-head-3 {
  background: var(--row-d-head);
}

.tone-head-4 {
  background: var(--row-e-head);
}

.row-number {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  background: var(--row-number-bg);
  color: var(--muted);
  text-align: center;
  font-variant-numeric: tabular-nums;
  font-weight: 750;
}

.row-number.head {
  background: var(--row-number-head-bg);
}

.source-toggle-head {
  cursor: pointer;
}

.source-toggle-head:hover {
  color: var(--accent-deep);
}

.row-index {
  line-height: 1;
}

.insert-row-cell {
  grid-column: 1 / -1;
  min-height: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: -3px 0;
  padding: 0;
  background: transparent;
}

.insert-row-button {
  width: 100%;
  height: 30px;
  min-height: 30px;
  border-color: transparent;
  border-radius: 999px;
  color: #f7fffb;
  background: rgba(var(--accent-rgb), 0.78);
  opacity: 0;
  transform: scaleX(0.94) scaleY(0.88);
  transition: opacity 140ms ease, transform 140ms ease, box-shadow 140ms ease;
  line-height: 1;
  padding: 0 14px 2px;
  box-shadow: 0 8px 18px rgba(var(--accent-rgb), 0.1);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0;
}

.insert-row-button::before {
  content: "+";
  margin-right: 8px;
  font-size: 18px;
  font-weight: 900;
  line-height: 1;
}

@keyframes workingDots {
  0% {
    content: "";
  }
  25% {
    content: ".";
  }
  50% {
    content: "..";
  }
  75%,
  100% {
    content: "...";
  }
}

.insert-row-cell:hover .insert-row-button,
.insert-row-button:focus {
  opacity: 1;
  transform: scale(1);
  background: rgba(var(--accent-rgb), 0.88);
}

.insertable-cell {
  position: relative;
}

.insertable-cell::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 14px;
  right: 14px;
  height: 2px;
  border-radius: 999px;
  background: rgba(var(--accent-rgb), 0.32);
  opacity: 0;
  transition: opacity 0.14s ease;
  pointer-events: none;
}

.insertable-cell:hover::before,
.insertable-cell:focus-within::before {
  opacity: 1;
}

.insert-cell-button {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 6;
  display: grid;
  place-items: center;
  width: 22px;
  min-width: 22px;
  height: 22px;
  min-height: 22px;
  padding: 0 0 3px;
  box-sizing: border-box;
  border: 1px solid rgba(var(--accent-rgb), 0.34);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.94);
  color: var(--accent-deep);
  font: inherit;
  font-size: 16px;
  font-weight: 900;
  line-height: 0.75;
  box-shadow: 0 4px 12px rgba(var(--shadow-rgb), 0.14);
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.9);
  transition: opacity 0.14s ease, transform 0.14s ease;
  cursor: pointer;
}

.insertable-cell:hover .insert-cell-button,
.insertable-cell:focus-within .insert-cell-button,
.insert-cell-button:focus-visible {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.insert-cell-button:hover {
  background: var(--accent);
  color: #fffdf8;
}

.delete-cell {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 7;
  display: grid;
  place-items: center;
  width: 22px;
  min-width: 22px;
  height: 22px;
  min-height: 22px;
  padding: 0 0 2px;
  border: 0;
  border-radius: 50%;
  background: var(--danger);
  color: #fff6f4;
  font: inherit;
  font-size: 15px;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 4px 12px rgba(151, 72, 64, 0.22);
  opacity: 0;
  transform: scale(0.88);
  transition: opacity 0.14s ease, transform 0.14s ease, width 0.14s ease;
  cursor: pointer;
}

.delete-cell:hover,
.delete-cell:focus-visible {
  background: var(--danger);
  color: #fff6f4;
  box-shadow: 0 5px 14px rgba(151, 72, 64, 0.3);
}

.insertable-cell:hover .delete-cell,
.insertable-cell:focus-within .delete-cell,
.delete-cell:focus-visible {
  opacity: 1;
  transform: scale(1);
}

.delete-cell.is-confirming {
  width: auto;
  min-width: 78px;
  padding: 0 12px 1px;
  background: var(--danger);
  color: #fff6f4;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 850;
  line-height: 1;
  text-shadow: none;
  opacity: 1;
  transform: scale(1);
}

.insert-cell-button.has-tip::after {
  bottom: calc(100% + 7px);
  z-index: 40;
  max-width: 180px;
  border-radius: 10px;
  font-size: 11px;
  transform: translate(-50%, 2px);
}

.insert-cell-button.has-tip:hover::after,
.insert-cell-button.has-tip:focus-visible::after {
  transform: translate(-50%, 0);
}

.dark-mode .insert-cell-button {
  background: rgba(24, 43, 45, 0.94);
  color: var(--ink);
}

.dark-mode .insert-cell-button:hover {
  background: var(--accent);
  color: #fffdf8;
}

.is-inserted-cell,
.is-inserted-row {
  animation: insertedAlignmentCell 0.48s ease-out;
}

.is-shifted-cell,
.is-row-shifted {
  animation: shiftedAlignmentCell 0.38s ease-out;
}

@keyframes insertedAlignmentCell {
  0% {
    background-color: rgba(var(--accent-rgb), 0.14);
    box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.2);
    transform: translateY(-3px);
  }

  60% {
    background-color: rgba(var(--accent-rgb), 0.07);
    transform: translateY(0);
  }

  100% {
    box-shadow: inset 0 0 0 0 rgba(var(--accent-rgb), 0);
  }
}

@keyframes shiftedAlignmentCell {
  0% {
    transform: translateY(-7px);
    box-shadow: inset 0 1px 0 rgba(var(--accent-rgb), 0.28);
  }

  100% {
    transform: translateY(0);
    box-shadow: inset 0 0 0 rgba(var(--accent-rgb), 0);
  }
}

.aligned-text {
  width: 100%;
  min-height: 0;
  box-sizing: border-box;
  resize: none;
  overflow-y: hidden;
  border: 0;
  border-radius: 8px;
  padding: 8px;
  background: transparent;
  font-size: var(--alignment-text-size);
  line-height: 1.45;
}

.print-text {
  display: none;
}

.aligned-text:focus {
  background: rgba(255, 255, 255, 0.38);
  box-shadow: inset 0 0 0 2px rgba(var(--accent-rgb), 0.18);
}

.post-editor-preview {
  width: 100%;
  padding: 8px;
  color: var(--ink);
  font-size: var(--alignment-text-size, 16px);
  line-height: 1.45;
  white-space: pre-wrap;
}

.pe-diff {
  padding: 1px 2px;
  border-radius: 3px;
  background: rgba(151, 72, 64, 0.2);
  color: #512722;
}

.dark-mode .pe-diff {
  background: rgba(255, 203, 135, 0.34);
  color: #fff8eb;
}

.hide-diffs .pe-diff {
  padding: 0;
  background: transparent;
  color: inherit;
}

.source-cell {
  background: var(--source);
}

.reference-cell {
  background: var(--reference);
}

.tone-0 {
  background: var(--row-a);
}

.tone-1 {
  background: var(--row-b);
}

.tone-2 {
  background: var(--row-c);
}

.tone-3 {
  background: var(--row-d);
}

.tone-4 {
  background: var(--row-e);
}

.row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.row-actions button {
  min-height: 29px;
  padding: 3px 8px;
  font-size: 13px;
}

.delete-row {
  width: 28px;
  height: 28px;
  min-height: 28px;
  padding-bottom: 2px;
  border-color: transparent;
  background: var(--danger);
  color: #fff6f4;
  font-size: 18px;
  line-height: 1;
}

.text-size-controls,
.column-width-controls {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 9999px;
  background: var(--panel-soft);
  box-sizing: border-box;
}

.text-size-small,
.text-size-large,
.column-width-small,
.column-width-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  min-height: 24px;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  color: var(--accent);
  font: inherit;
  font-weight: 850;
  line-height: 1;
  cursor: pointer;
  user-select: none;
  transition:
    color 0.16s ease,
    transform 0.16s ease,
    opacity 0.16s ease;
}

.text-size-small:hover,
.text-size-large:hover,
.column-width-small:hover,
.column-width-large:hover {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--accent-deep);
  transform: translateY(-1px);
}

.text-size-small:active,
.text-size-large:active,
.column-width-small:active,
.column-width-large:active {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  opacity: 0.75;
  transform: translateY(0);
}

.text-size-small:focus-visible,
.text-size-large:focus-visible,
.column-width-small:focus-visible,
.column-width-large:focus-visible {
  outline: 2px solid rgba(var(--accent-rgb), 0.45);
  outline-offset: 3px;
  border-radius: 9999px;
}

.text-size-small {
  font-size: 13px;
}

.text-size-large {
  font-size: 17px;
}

.column-width-small {
  font-size: 12px;
}

.column-width-large {
  font-size: 17px;
}

.text-size-controls input[type="range"],
.column-width-controls input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: min(34vw, 340px);
  min-width: 220px;
  height: 24px;
  margin: 0;
  accent-color: var(--accent);
  background: transparent;
  cursor: pointer;
}

.text-size-controls input[type="range"]::-webkit-slider-runnable-track,
.column-width-controls input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 9999px;
  background: rgba(var(--accent-rgb), 0.26);
}

.text-size-controls input[type="range"]::-webkit-slider-thumb,
.column-width-controls input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  margin-top: -8px;
  border: 2px solid var(--slider-thumb-border);
  border-radius: 50%;
  background: var(--slider-thumb);
  box-shadow: 0 4px 12px rgba(var(--shadow-rgb), 0.22);
}

.text-size-controls input[type="range"]::-moz-range-track,
.column-width-controls input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 9999px;
  background: rgba(var(--accent-rgb), 0.26);
}

.text-size-controls input[type="range"]::-moz-range-thumb,
.column-width-controls input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border: 2px solid var(--slider-thumb-border);
  border-radius: 50%;
  background: var(--slider-thumb);
  box-shadow: 0 4px 12px rgba(var(--shadow-rgb), 0.22);
}

.footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 11px;
  padding: 18px 28px 30px;
  color: var(--muted);
  font-size: 14px;
}

.footer-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.footer-button,
.home-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  min-width: 46px;
  min-height: 46px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--accent);
  box-shadow: 0 10px 24px rgba(var(--shadow-rgb), 0.08);
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
}

.footer-button:hover,
.home-button:hover {
  transform: translateY(-1px);
  background: var(--accent);
  color: var(--page-bg);
  border-color: rgba(var(--accent-rgb), 0.28);
}

.language-button {
  font-size: 14px;
  letter-spacing: 0;
}

.home-icon {
  width: 19px;
  height: 19px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 11.5L12 4l9 7.5'/%3E%3Cpath d='M5.5 10.5V20h13v-9.5'/%3E%3Cpath d='M9.5 20v-6h5v6'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 11.5L12 4l9 7.5'/%3E%3Cpath d='M5.5 10.5V20h13v-9.5'/%3E%3Cpath d='M9.5 20v-6h5v6'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
}

.footer-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 650;
}

@media print {
  body {
    background: #fff;
  }

  .topbar,
  .workspace,
  .controls,
  .row-actions,
  .remove-version {
    display: none;
  }

  main {
    width: 100%;
    padding: 0;
  }

  .alignment-shell {
    padding: 0;
    border: 0;
    overflow: visible;
    background: transparent;
    box-shadow: none;
  }

  .head {
    position: static;
  }

  .aligned-text {
    display: none;
  }

  .print-text {
    display: block;
    min-height: 54px;
    padding: 8px;
    color: var(--ink);
    font-size: var(--alignment-text-size);
    line-height: 1.45;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    break-inside: avoid;
    page-break-inside: avoid;
  }
}

@media (max-width: 900px) {
  .topbar {
    position: static;
    grid-template-columns: 1fr;
  }

  .actions,
  .alignment-actions {
    justify-content: flex-start;
  }

  .controls {
    grid-template-columns: 1fr;
  }

  .alignment-shell {
    overflow-x: auto;
  }

}

@media (max-width: 720px) {
  .topbar,
  main {
    width: min(94vw, 680px);
  }

  .topbar {
    gap: 12px;
    padding: 14px 0 10px;
  }

  .brand {
    align-items: flex-start;
    gap: 11px;
  }

  .brand-mark {
    width: 48px;
    height: 48px;
  }

  .brand-copy {
    gap: 4px;
    padding-top: 2px;
  }

  .topbar h1 {
    font-size: clamp(27px, 8vw, 34px);
    line-height: 1;
    white-space: normal;
  }

  .topbar p {
    max-width: 72ch;
    font-size: 14px;
    line-height: 1.35;
    white-space: normal;
  }

  .workspace {
    padding: 12px;
    --version-edge-offset: 0px;
    --version-card-min: min(100%, 260px);
    --version-card-ideal: 1fr;
  }

  .source-panel {
    width: 100%;
    margin: 0;
  }

  .source-drawer-toggle {
    width: 100%;
    margin: 0;
  }

  .source-drawer-toggle::before,
  .source-drawer-toggle::after {
    width: 36px;
  }

  .version-inputs {
    padding: 0;
  }
}