/* PDF-Fighter workbench — visual layer on top of the stable editor UI. */
:root {
  --pf-bg: #090909;
  --pf-surface: #111111;
  --pf-surface-2: #181818;
  --pf-muted-bg: #202020;
  --pf-border: #303030;
  --pf-text: #f1eadf;
  --pf-text-muted: #9f9a94;
  --pf-accent: #e51e3e;
  --pf-accent-neon: #f02c4b;
  --pf-neon-glow: 0 0 18px rgba(229, 30, 62, 0.18);
  --pf-radius-control: 5px;
  --pf-radius-surface: 10px;
  --pf-control-h: 40px;
  --toc-width: 184px;
}

body {
  background: var(--pf-bg);
  color: var(--pf-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.toolbar {
  min-height: 66px;
  padding: 10px 18px;
  gap: 18px;
  background: #121212;
  border-bottom-color: rgba(229, 30, 62, 0.38);
}

.toolbar h1 { font-size: 1rem; letter-spacing: 0; text-shadow: none; animation: none; }
.toolbar .logo-link { display: inline-flex; align-items: center; gap: 9px; color: var(--pf-text); }
.toolbar .logo-link img { width: 34px; height: 34px; border-radius: 5px; object-fit: cover; }
.toolbar .logo-link b { color: var(--pf-accent); }
.toolbar-leading { padding-left: 14px; border-left: 1px solid var(--pf-border); }
.toolbar-actions { gap: 7px; }

.toolbar-icon-btn,
.toolbar-text-btn,
.page-nav-btn {
  border-color: var(--pf-border);
  background: var(--pf-surface-2);
  box-shadow: none;
}
.toolbar-icon-btn:hover:not(:disabled),
.toolbar-text-btn:hover,
.page-nav-btn:hover:not(:disabled) {
  border-color: var(--pf-accent);
  background: #211317;
  box-shadow: var(--pf-neon-glow);
}
.toolbar-text-btn:not(.toolbar-text-btn--outline) { background: var(--pf-accent); border-color: var(--pf-accent); color: #fff; }
.toolbar-text-btn:not(.toolbar-text-btn--outline):hover { background: var(--pf-accent-neon); border-color: var(--pf-accent-neon); }
.toolbar-text-btn--compact { background: var(--pf-surface-2) !important; border-color: var(--pf-border) !important; }
.toolbar-text-btn--outline { border-color: rgba(229, 30, 62, 0.55); color: #e99aa8; }
.toolbar-text-btn--append {
  background: #181818 !important;
  border-color: rgba(229, 30, 62, .72) !important;
  color: var(--pf-text) !important;
}
.toolbar-text-btn--append:hover {
  background: #271317 !important;
  border-color: var(--pf-accent) !important;
}
.toolbar-text-btn--append .add-icon { color: #ef5573; }
.append-label-short,
.replace-label-short { display: none; }

.edit-tools {
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  padding: 4px;
  border: 1px solid #303030;
  border-radius: 7px;
  background: #0d0d0d;
}
.edit-tools[hidden],
.toolbar-more-wrap[hidden],
.toolbar-more-menu[hidden],
.toc-backdrop[hidden] { display: none !important; }
.toolbar [hidden] { display: none !important; }
.editor.text-edit-mode .selection-overlay { cursor: text; }
.edit-tool {
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  color: #c7c1ba;
  font: 600 .73rem/1 Inter, ui-sans-serif, system-ui, sans-serif;
  white-space: nowrap;
  cursor: pointer;
}
.edit-tool:hover:not(:disabled),
.edit-tool:focus-visible {
  border-color: #4a3035;
  background: #211317;
  color: #fff;
  outline: none;
}
.edit-tool.is-active {
  border-color: rgba(229, 30, 62, .62);
  background: #2b1419;
  color: #fff;
}
.edit-tool:disabled {
  opacity: .38;
  cursor: not-allowed;
}
.edit-tool--pages { display: none; }

.toolbar-more-wrap { display: none; position: relative; flex: 0 0 auto; }
.toolbar-more-menu {
  position: absolute;
  top: calc(100% + 7px);
  right: 0;
  z-index: 240;
  width: 210px;
  padding: 6px;
  border: 1px solid #3a3a3a;
  border-radius: 7px;
  background: #171717;
  box-shadow: 0 18px 44px rgba(0,0,0,.55);
}
.toolbar-more-menu button {
  display: block;
  width: 100%;
  padding: 9px 10px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--pf-text);
  font: 500 .8rem/1.2 Inter, ui-sans-serif, system-ui, sans-serif;
  text-align: left;
  cursor: pointer;
}
.toolbar-more-menu button:hover:not(:disabled),
.toolbar-more-menu button:focus-visible {
  background: #271317;
  color: #fff;
  outline: none;
}
.toolbar-more-menu button:disabled { opacity: .4; cursor: not-allowed; }
.toolbar-more-separator { height: 1px; margin: 5px 4px; background: #333; }

.toc-mobile-header,
.toc-backdrop { display: none; }
.page-list li:focus-visible {
  outline: 2px solid var(--pf-accent);
  outline-offset: -2px;
}

.editor { background: var(--pf-bg); }
.toc { background: #101010; border-right-color: var(--pf-border); }
.toc-empty-hint { min-height: 54px; display: grid; place-items: center; margin: 0; padding: 12px; border-bottom-color: var(--pf-border); color: #85817c; }
.toc-scroll { background: #101010; scrollbar-color: #464646 #101010; }
.page-list { padding: 12px 10px; }
.page-list li { margin-bottom: 5px; padding: 7px; border: 1px solid transparent; color: var(--pf-text); }
.page-list li:hover { background: #1a1a1a; border-color: #353535; }
.page-list li.active { background: #241317; border-color: var(--pf-accent); }
.page-list .page-thumb { width: 48px; height: 64px; border: 1px solid #444; background: #2a2a2a; }

.viewer { background: #080808; }
.page-container { background: #080808; }
.page-scroll { padding: 30px; }
.editor--empty .page-scroll { padding: clamp(22px, 5vh, 54px) clamp(18px, 5vw, 72px); }
.upload-zone {
  width: min(760px, 94%);
  height: min(520px, 78vh);
  min-height: 330px;
  aspect-ratio: 16 / 10;
  gap: 12px;
  border: 1px dashed var(--pf-accent);
  border-radius: 9px;
  background: #141414;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.015), 0 28px 80px rgba(0,0,0,.3);
}
.upload-zone-logo { width: min(360px, 52%); height: min(360px, 70%); inset: 50% auto auto 50%; transform: translate(-50%, -50%); border-radius: 18px; opacity: .11; object-fit: cover; filter: saturate(.8); }
.upload-zone-copy { padding-top: 0; max-width: 25rem; }
.upload-zone-title { font-size: clamp(1.25rem, 4cqmin, 1.8rem); letter-spacing: -.02em; }
.upload-zone-sub { font-size: clamp(.8rem, 2.2cqmin, .95rem); color: #aaa5a0; }
.upload-zone-actions { width: auto; padding: 4px 16px 0; flex-wrap: nowrap; }
.upload-btn { min-height: 44px; height: 44px; padding-inline: 20px; border-radius: 5px; font-size: .875rem; }
.upload-btn--primary { background: var(--pf-accent); }
.upload-btn--primary:hover { background: var(--pf-accent-neon); box-shadow: var(--pf-neon-glow); }
.upload-btn--secondary { background: #1a1a1a; border-color: #484848; }
.upload-btn--secondary:hover { background: #211317; border-color: var(--pf-accent); }

.page-strip { gap: 2.25rem; }
.page-wrapper { filter: drop-shadow(0 18px 32px rgba(0,0,0,.34)); }
.page-image-wrap--attention { outline: 2px solid var(--pf-accent); outline-offset: 5px; }
.page-image-wrap .text-inline-editor { background: var(--inline-fill, #fff) !important; }
.page-nav { min-height: 58px; background: #111; border-top-color: var(--pf-border); }
.page-nav-center { gap: 10px; }
.page-nav-btn { min-width: 42px; }
.app-version { color: #68645f; }

.upload-notice {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 72px;
  z-index: 280;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: 1px solid #5e3640;
  border-radius: 8px;
  background: #21171a;
  box-shadow: 0 8px 30px #0008;
  color: #f1eadf;
  font-size: 13px;
  line-height: 1.4;
}
.upload-notice[hidden], .upload-notice [hidden] { display: none !important; }
.upload-notice > span { flex: 1; min-width: 0; }
.upload-notice button { min-height: 40px; padding: 5px 10px; border: 1px solid #69414a; border-radius: 5px; background: #321e24; color: #fff; cursor: pointer; }
#btnUploadNoticeClose { font-size: 20px; }
.mobile-brush-fab-wrap { display: none; position: absolute; right: 12px; top: 48%; z-index: 40; flex-direction: column; align-items: flex-end; gap: 8px; pointer-events: none; }
.mobile-brush-fab { pointer-events: auto; min-width: 58px; min-height: 54px; border: 1px solid #665057; border-radius: 12px; background: #21191c; color: #f1eadf; box-shadow: 0 8px 22px #0008; cursor: pointer; font: 650 13px/1 system-ui, sans-serif; }
.mobile-brush-fab[aria-pressed="true"] { background: #e51e3e; border-color: #ff7993; color: #fff; }
.mobile-brush-fab:focus-visible { outline: 2px solid #ff7993; outline-offset: 3px; }
.mobile-brush-hint { max-width: 210px; margin: 0; padding: 10px; border: 1px solid #5e3640; border-radius: 8px; background: #21171a; color: #f1eadf; font-size: 12px; line-height: 1.45; }
.mobile-brush-hint[hidden] { display: none !important; }
.editor.editor--mobile-brush .selection-overlay { touch-action: none; }
@media (max-width: 720px), (pointer: coarse) {
  .editor:not(.editor--empty) .mobile-brush-fab-wrap { display: flex; }
  .upload-notice { flex-wrap: wrap; }
  .upload-notice > span { flex-basis: calc(100% - 50px); }
}

.context-menu { border: 1px solid #3a3a3a; border-radius: 7px; background: #171717; box-shadow: 0 18px 44px rgba(0,0,0,.5); }
.context-menu .ctx-item:hover { background: #271317; color: #fff; }
.onboarding-card { background: #141414; border-color: #363636; border-radius: 10px; }
.onboarding-header, .onboarding-tabs { background: #101010; border-color: #323232; }
.onboarding-badge { background: var(--pf-accent); border-radius: 4px; }
.onboarding-tab { border-radius: 5px; }
.onboarding-tab.is-active { background: #261317; color: #fff; box-shadow: inset 3px 0 0 var(--pf-accent); }

/* Обучение: четыре коротких шага вместо длинной справки. */
.onboarding-backdrop { background: rgba(5, 5, 6, .76); }
.onboarding-modal { padding: 16px; }
.onboarding-card {
  width: min(100%, 780px);
  height: min(84dvh, 590px);
  max-height: calc(100dvh - 32px);
  background: #171717;
  border: 1px solid #474040;
  border-radius: 14px;
  box-shadow: 0 32px 100px rgba(0, 0, 0, .66), 0 0 0 1px rgba(255, 255, 255, .035);
}
.onboarding-header {
  align-items: flex-start;
  padding: 26px 28px 23px;
  background: linear-gradient(110deg, #241518 0%, #171717 60%);
  border-bottom: 1px solid #373333;
}
.onboarding-title-wrap { display: block; }
.onboarding-eyebrow, .onboarding-panel-kicker {
  display: block;
  color: #ef5573;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .13em;
  line-height: 1.3;
}
.onboarding-eyebrow span { color: #777; padding: 0 5px; }
.onboarding-title { margin-top: 10px; font-size: clamp(23px, 3vw, 30px); font-weight: 730; letter-spacing: -.04em; }
.onboarding-subtitle { margin: 6px 0 0; color: #aaa5a5; font-size: 14px; line-height: 1.45; }
.onboarding-close {
  width: 38px;
  height: 38px;
  border: 1px solid #494141;
  background: #242020;
  color: #ded7d7;
  font-size: 25px;
  border-radius: 8px;
}
.onboarding-close:hover { background: #422029; border-color: #ef3d60; }
.onboarding-body { grid-template-columns: 218px minmax(0, 1fr); }
.onboarding-tabs {
  gap: 5px;
  padding: 21px 12px;
  background: #121212;
  border-right: 1px solid #333;
}
.onboarding-tab {
  min-height: 63px;
  gap: 13px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 650;
  color: #bdb9b9;
  line-height: 1.15;
}
.onboarding-tab:hover { transform: none; box-shadow: none; background: #25191b; border-color: #5c2b35; }
.onboarding-tab.is-active, .onboarding-tab.is-active:hover {
  transform: none;
  background: #30171e;
  border-color: #773244;
  box-shadow: inset 3px 0 0 #ee365b;
}
.onboarding-tab-number {
  flex: 0 0 29px;
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  border: 1px solid #504346;
  border-radius: 6px;
  color: #c9aeb5;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  font-weight: 750;
}
.onboarding-tab.is-active .onboarding-tab-number { background: #e92951; border-color: #e92951; color: #fff; }
.onboarding-tab small { display: block; margin-top: 5px; color: #a39b9b; font-size: 11px; font-weight: 450; }
.onboarding-tab.is-active small { color: #c8afb5; }
.onboarding-panels { padding: 27px 31px 25px; }
.onboarding-panel-title { margin: 10px 0 8px; color: #fff; font-size: clamp(22px, 2.6vw, 27px); font-weight: 700; letter-spacing: -.035em; line-height: 1.16; }
.onboarding-lead { max-width: 450px; margin: 0 0 21px; color: #bcb6b6; font-size: 14px; line-height: 1.5; }
.onboarding-actions-list { display: grid; gap: 0; border-top: 1px solid #363131; }
.onboarding-action { display: flex; align-items: flex-start; gap: 15px; padding: 13px 0; border-bottom: 1px solid #363131; }
.onboarding-action-mark { flex: 0 0 24px; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: #352126; color: #ff7993; font-size: 11px; font-weight: 750; }
.onboarding-action p { margin: 1px 0 0; color: #c8c3c3; font-size: 13px; line-height: 1.5; }
.onboarding-action strong { color: #fff; font-weight: 650; }
.onboarding-note { display: flex; align-items: flex-start; gap: 10px; margin: 17px 0 0; padding: 11px 12px; border: 1px solid #4b3036; border-radius: 8px; background: #25191c; color: #e1c8ce; font-size: 12px; line-height: 1.45; }
.onboarding-note span { color: #ff6e8a; font-size: 17px; line-height: 1; }
.onboarding-footer { flex-shrink: 0; display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 70px; padding: 12px 28px; background: #121212; border-top: 1px solid #373333; }
.onboarding-progress { display: flex; align-items: center; gap: 14px; color: #a9a2a2; font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: .08em; white-space: nowrap; }
.onboarding-progress-track { width: 76px; height: 3px; overflow: hidden; border-radius: 5px; background: #453439; }
.onboarding-progress-track > span { display: block; width: 25%; height: 100%; border-radius: inherit; background: #ed3157; transition: width .2s ease; }
.onboarding-footer-actions { display: flex; gap: 9px; }
.onboarding-secondary, .onboarding-primary { min-height: 40px; padding: 0 16px; border-radius: 7px; font: 650 13px/1 ui-sans-serif, system-ui, sans-serif; cursor: pointer; }
.onboarding-secondary { border: 1px solid #494040; background: #252121; color: #eee; }
.onboarding-secondary:hover { background: #33292b; }
.onboarding-primary { min-width: 115px; border: 1px solid #ec3157; background: #e92750; color: #fff; }
.onboarding-primary:hover { background: #f13961; }
.onboarding-primary span { margin-left: 7px; font-size: 17px; vertical-align: -1px; }
.onboarding-tab:focus-visible, .onboarding-close:focus-visible, .onboarding-secondary:focus-visible, .onboarding-primary:focus-visible { outline: 2px solid #ff7993; outline-offset: 2px; }
@media (max-width: 760px) {
  .onboarding-modal { padding: 12px; }
  .onboarding-card { width: 100%; height: min(94dvh, 690px); max-height: calc(100dvh - 24px); border-radius: 12px; }
  .onboarding-header { padding: 18px 18px 16px; }
  .onboarding-title { margin-top: 7px; font-size: 23px; }
  .onboarding-subtitle { font-size: 12px; }
  .onboarding-close { width: 34px; height: 34px; }
  .onboarding-body { grid-template-columns: 1fr; grid-template-rows: auto minmax(0, 1fr); }
  .onboarding-tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 3px; padding: 8px; border-right: 0; border-bottom: 1px solid #363131; overflow: visible; }
  .onboarding-tab { display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; min-height: 60px; padding: 5px 2px; text-align: center; font-size: 11px; }
  .onboarding-tab-number { width: 22px; height: 22px; flex-basis: 22px; font-size: 9px; }
  .onboarding-tab small { display: none; }
  .onboarding-panels { padding: 19px 19px 22px; }
  .onboarding-panel-title { margin-top: 7px; font-size: 22px; }
  .onboarding-lead { margin-bottom: 13px; font-size: 13px; }
  .onboarding-action { gap: 10px; padding: 10px 0; }
  .onboarding-action p { font-size: 12px; }
  .onboarding-note { margin-top: 13px; font-size: 11px; }
  .onboarding-footer { min-height: 64px; padding: 10px 17px; }
  .onboarding-progress-track { display: none; }
  .onboarding-secondary, .onboarding-primary { padding: 0 11px; min-height: 38px; font-size: 12px; }
  .onboarding-primary { min-width: 96px; }
}
@media (prefers-reduced-motion: reduce) {
  .onboarding-card, .onboarding-panel, .onboarding-progress-track > span { animation: none; transition: none; }
}

@media (max-width: 1500px) {
  .toolbar { gap: 10px; padding: 10px 12px; }
  .toolbar-start { gap: 10px; }
  .toolbar-leading { padding-left: 10px; }
  .toolbar-end { gap: 7px; }
  .toolbar-actions .zoom { flex: 0 1 145px; width: 145px; }
  #btnUndo,
  #btnRedo,
  #btnCompress,
  #btnOpenSample { display: none; }
  .toolbar-more-wrap:not([hidden]) { display: block; }
}

@media (max-width: 1100px) {
  .toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "start end"
      "tools tools";
    align-items: center;
    gap: 6px 10px;
    min-height: auto;
    padding: 8px 10px;
    background: #111;
  }
  .toolbar-start { grid-area: start; flex-wrap: nowrap; min-width: 0; }
  .edit-tools {
    grid-area: tools;
    width: 100%;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .edit-tools::-webkit-scrollbar { display: none; }
  .toolbar-leading { padding-left: 8px; }
  .toolbar .logo-link img { width: 30px; height: 30px; }
  .toolbar-end {
    grid-area: end;
    flex-direction: row;
    align-items: center;
    gap: 6px;
    margin-left: 0;
    padding-top: 0;
    border-top: 0;
  }
  .toolbar-actions { width: auto; flex-wrap: nowrap; }
  .toolbar-actions .zoom { flex: 0 1 150px; width: 150px; }
  .toolbar-actions .zoom input[type="range"] { min-width: 64px; }
  .editor--empty .page-scroll { padding: 18px 12px; }
  .upload-zone { width: min(680px, 96%); height: min(460px, 72vh); min-height: 300px; }
}

@media (max-width: 880px) {
  :root { --toc-width: clamp(176px, 28vw, 196px); }
}

@media (max-width: 600px) {
  :root { --toc-width: 0px; }
  .toolbar { grid-template-columns: minmax(0, 1fr) auto; }
  .toolbar .logo-link span { display: none; }
  .toolbar-leading { border-left: 0; padding-left: 0; }
  .toolbar-leading #btnOnboarding { display: none; }
  .toolbar-actions .zoom { display: none; }
  .toolbar-text-btn--append { padding-inline: 10px; }
  .append-label-long { display: none; }
  .append-label-short { display: inline; }
  #btnSave { width: 42px; padding-inline: 0; font-size: 0; }
  #btnSave .toolbar-btn-icon { width: 18px; height: 18px; }
  .edit-tool--pages { display: inline-flex; align-items: center; }
  .toc {
    display: none;
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 260;
    width: min(86vw, 320px);
    min-height: 100dvh;
    box-shadow: 20px 0 54px rgba(0,0,0,.62);
  }
  .editor.toc-open .toc { display: flex; }
  .toc-mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 54px;
    padding: 8px 10px 8px 14px;
    border-bottom: 1px solid var(--pf-border);
  }
  .toc-mobile-header strong { font-size: .9rem; }
  .toc-mobile-close {
    min-height: 36px;
    padding: 0 10px;
    border: 1px solid #3a3a3a;
    border-radius: 4px;
    background: #1a1a1a;
    color: var(--pf-text);
  }
  .toc-backdrop:not([hidden]) {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 250;
    border: 0;
    background: rgba(0,0,0,.68);
  }
  .page-scroll { padding: 16px 8px; }
  .editor--empty .page-scroll { padding: 12px 8px; }
  .upload-zone { width: 100%; min-height: min(410px, 66vh); height: auto; aspect-ratio: auto; padding: 34px 12px; }
  .upload-zone-logo { width: 230px; height: 230px; }
  .upload-zone-actions { flex-direction: column; width: min(260px, 100%); }
  .upload-btn { width: 100%; }
  .page-nav { min-height: 52px; }
}

@media (max-width: 360px) {
  #btnNewDoc { padding-inline: 9px; }
  .replace-label-long { display: none; }
  .replace-label-short { display: inline; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}