/* stylelint-disable no-descending-specificity -- shared interaction states intentionally span component families */
:root {
  color-scheme: dark;
  font-family: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #090b0f;
  color: #f5f7fa;
  --bg: #090b0f;
  --surface: #10141b;
  --surface-raised: #151a23;
  --surface-hover: #1b212c;
  --line: #282f3a;
  --line-strong: #3a4453;
  --text: #f5f7fa;
  --text-soft: #d9dee6;
  --muted: #8f99a8;
  --accent: #e04438;
  --accent-hover: #f05246;
  --focus: #ff7a70;
  --ok: #72d89a;
  --bad: #ff847d;
  --warn: #dfac6d;
  --radius: 14px;
  --radius-sm: 9px;
}

* {
  box-sizing: border-box;
}

::selection {
  background: rgb(224 68 56 / 38%);
  color: #fff;
}

[hidden] {
  display: none !important;
}

html {
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 12% -10%, rgb(224 68 56 / 9%), transparent 32rem),
    linear-gradient(180deg, #0b0e13 0%, var(--bg) 42%);
}

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

button,
input,
select {
  color: inherit;
}

button,
select,
input[type="text"],
input[type="url"] {
  min-height: 36px;
}

:where(button, select, input, textarea) {
  transition: border-color 120ms ease, background-color 120ms ease, color 120ms ease, box-shadow 120ms ease, transform 120ms ease;
}

button:focus-visible,
select:focus-visible,
textarea:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

input[type="checkbox"],
input[type="range"] {
  accent-color: var(--accent);
}

.app-shell {
  width: min(1460px, calc(100% - 32px));
  margin: 0 auto;
  padding: 30px 0 22px;
}

.hero {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 18px;
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--accent-hover);
  font: 700 0.68rem/1.2 "Space Mono", ui-monospace, monospace;
  letter-spacing: 0.16em;
}

.title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.1rem, 5vw, 4.35rem);
  font-weight: 620;
  letter-spacing: -0.055em;
  line-height: 0.96;
}

.tagline {
  max-width: 720px;
  margin: 9px 0 0;
  color: var(--muted);
  font-size: clamp(0.92rem, 1.5vw, 1.02rem);
}

.privacy-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 28px;
  padding: 4px 9px;
  border: 1px solid #30433a;
  border-radius: 999px;
  background: rgb(78 145 103 / 8%);
  color: #a8d9b9;
  font: 700 0.68rem/1 "Space Mono", ui-monospace, monospace;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.privacy-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px rgb(114 216 154 / 9%);
}

.mode-tabs,
.toolbar,
.toolbar-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.button,
.mode-tab,
select {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
}

.button,
.mode-tab {
  padding: 9px 13px;
  color: var(--text-soft);
  cursor: pointer;
}

.button:hover:not(:disabled),
.mode-tab:hover:not(.active),
.mini-button:hover:not(:disabled),
.outline-item:hover,
.pdf-page-card:hover {
  border-color: var(--line-strong);
  background: var(--surface-hover);
  color: var(--text);
}

.button:active:not(:disabled),
.mini-button:active:not(:disabled),
.mode-tab:active {
  transform: translateY(1px);
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
  font-weight: 700;
}

.button.primary:hover:not(:disabled) {
  border-color: var(--accent-hover);
  background: var(--accent-hover);
}

.button.compact {
  min-height: 34px;
  padding: 7px 10px;
}

.button.danger,
.mini-button.danger {
  color: #ffaaa5;
}

.button:disabled,
.mini-button:disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

.mode-tabs {
  width: fit-content;
  gap: 3px;
  margin-bottom: 9px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgb(16 20 27 / 76%);
}

.mode-tab {
  min-width: 108px;
  min-height: 34px;
  padding: 7px 13px;
  border-color: transparent;
  background: transparent;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 650;
}

.mode-tab.active {
  border-color: #343d49;
  background: #202630;
  color: #fff;
  box-shadow: inset 0 1px rgb(255 255 255 / 4%);
}

.workspace {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(16 20 27 / 91%);
  box-shadow: 0 28px 70px rgb(0 0 0 / 27%);
}

.toolbar {
  gap: 0;
  min-height: 56px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  background: rgb(13 16 22 / 78%);
}

.toolbar-group {
  gap: 7px;
  padding: 0 10px;
}

.toolbar-group:first-child {
  padding-left: 0;
}

.toolbar-group:last-child {
  padding-right: 0;
}

.toolbar-group + .toolbar-group {
  border-left: 1px solid var(--line);
}

.toolbar label {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 0.69rem;
  font-weight: 600;
}

.toolbar select {
  min-width: 110px;
  padding: 7px 30px 7px 9px;
  color: var(--text-soft);
}

.document-toolbar .action-group {
  margin-left: auto;
}

.pdf-toolbar {
  flex-wrap: wrap;
}

.pdf-toolbar .save-group {
  margin-left: auto;
}

.toolbar .toggle-label,
.toolbar .quality-label {
  display: flex;
  grid-auto-flow: column;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 0 3px;
  white-space: nowrap;
}

.toolbar .toggle-label {
  cursor: pointer;
}

.quality-label input[type="range"] {
  width: 96px;
}

.quality-label output {
  min-width: 2ch;
  color: var(--text-soft);
  font: 700 0.72rem/1 "Space Mono", ui-monospace, monospace;
  font-variant-numeric: tabular-nums;
}

.editor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  min-height: 64vh;
}

.panel {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.editor-panel {
  border-right: 1px solid var(--line);
}

.panel-header {
  display: flex;
  min-height: 43px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 13px;
  border-bottom: 1px solid var(--line);
  background: rgb(255 255 255 / 1.2%);
  color: var(--muted);
  font-size: 0.76rem;
}

.panel-header strong {
  overflow: hidden;
  color: var(--text-soft);
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#encoding-label,
.detail-status,
.pdf-meta-row,
.pdf-page-card small {
  font-family: "Space Mono", ui-monospace, monospace;
}

#editor,
#preview {
  width: 100%;
  min-height: 0;
  flex: 1;
  margin: 0;
  padding: 20px;
  border: 0;
  border-radius: 0;
  outline-offset: -3px;
  background: transparent;
  color: #e7ebf0;
  font: 400 13.5px/1.62 "Space Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  tab-size: 2;
}

#editor {
  caret-color: var(--focus);
  resize: none;
}

#preview {
  overflow: auto;
  color: #c9d0da;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.status {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 4px 8px;
  font: 700 0.66rem/1.2 "Space Mono", ui-monospace, monospace;
}

.status.good {
  border-color: rgb(114 216 154 / 16%);
  background: rgb(114 216 154 / 8%);
  color: var(--ok);
}

.status.bad {
  border-color: rgb(255 132 125 / 16%);
  background: rgb(255 132 125 / 8%);
  color: var(--bad);
}

.status.neutral {
  border-color: rgb(143 153 168 / 13%);
  background: rgb(143 153 168 / 7%);
  color: var(--muted);
}

.detail-status {
  margin: 0;
  padding: 8px 13px;
  border-top: 1px solid var(--line);
  background: rgb(8 10 14 / 35%);
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.4;
}

.drop-active {
  outline: 2px dashed var(--focus);
  outline-offset: -7px;
  background: rgb(224 68 56 / 4%);
}

.pdf-meta-row {
  display: flex;
  min-height: 41px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 13px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.69rem;
}

.pdf-meta-row strong {
  overflow: hidden;
  color: var(--text-soft);
  font-family: "Space Grotesk", ui-sans-serif, sans-serif;
  font-size: 0.78rem;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pdf-metadata-panel {
  border-bottom: 1px solid var(--line);
  background: rgb(8 10 14 / 22%);
}

.pdf-metadata-panel summary {
  display: flex;
  min-height: 40px;
  align-items: center;
  gap: 12px;
  padding: 8px 13px;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.7rem;
  list-style: none;
}

.pdf-metadata-panel summary::-webkit-details-marker {
  display: none;
}

.pdf-metadata-panel summary::after {
  content: "›";
  transition: transform 120ms ease;
}

.pdf-metadata-panel[open] summary::after {
  transform: rotate(90deg);
}

.pdf-metadata-panel summary strong {
  color: var(--text-soft);
  font-size: 0.76rem;
}

#pdf-metadata-state {
  margin-left: auto;
  font-family: "Space Mono", ui-monospace, monospace;
}

.pdf-metadata-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px 12px;
  margin: 0;
  padding: 12px 13px;
  border: 0;
  border-top: 1px solid var(--line);
}

.pdf-metadata-grid label {
  display: grid;
  min-width: 0;
  gap: 4px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 600;
}

.pdf-metadata-grid input {
  width: 100%;
  min-width: 0;
  padding: 7px 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-raised);
  color: #e7ebf0;
}

.pdf-metadata-grid:disabled {
  opacity: 0.58;
}

.pdf-metadata-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 13px 12px;
  color: var(--muted);
  font: 400 0.66rem/1.4 "Space Mono", ui-monospace, monospace;
}

#pdf-status.bad {
  color: var(--bad);
}

.pdf-grid {
  display: grid;
  min-height: 67vh;
  grid-template-columns: minmax(240px, 0.33fr) minmax(0, 1fr) minmax(205px, 0.27fr);
}

.pdf-outline-panel,
.pdf-preview-panel,
.pdf-pages-panel {
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
}

.pdf-outline-panel {
  border-right: 1px solid var(--line);
}

.pdf-pages-panel {
  border-left: 1px solid var(--line);
}

.pdf-outline,
.pdf-pages {
  min-height: 0;
  overflow: auto;
  padding: 10px;
}

.pdf-outline {
  flex: 1 1 auto;
  color: var(--muted);
  font-size: 0.8rem;
}

.mini-button {
  min-height: 28px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-raised);
  color: var(--text-soft);
  cursor: pointer;
  font-size: 0.69rem;
}

.outline-item {
  display: block;
  width: 100%;
  min-height: 32px;
  padding: 7px 8px 7px calc(8px + var(--outline-depth, 0) * 14px);
  overflow: hidden;
  border: 1px solid transparent;
  border-radius: 7px;
  background: transparent;
  color: #d5dae2;
  cursor: pointer;
  font-size: 0.78rem;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.outline-item.targetless {
  color: var(--muted);
}

.outline-item.selected {
  border-color: rgb(224 68 56 / 48%);
  background: rgb(224 68 56 / 9%);
  color: #fff;
}

.outline-note {
  margin: 10px 2px 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  color: var(--warn);
  line-height: 1.45;
}

.bookmark-editor {
  display: grid;
  gap: 9px;
  padding: 11px;
  border-top: 1px solid var(--line);
  background: rgb(6 8 11 / 28%);
}

.bookmark-editor > label {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 600;
}

.bookmark-editor input[type="text"],
.bookmark-editor input[type="url"],
.bookmark-editor select {
  width: 100%;
  min-width: 0;
  padding: 7px 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-raised);
  color: #e7ebf0;
}

.bookmark-flags,
.bookmark-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.bookmark-flags label {
  display: flex;
  min-height: 28px;
  align-items: center;
  gap: 5px;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.69rem;
}

.pdf-canvas-stage {
  position: relative;
  display: grid;
  min-height: 0;
  flex: 1;
  place-items: start center;
  overflow: auto;
  padding: 20px;
  background:
    linear-gradient(45deg, rgb(255 255 255 / 1.5%) 25%, transparent 25%) 0 0 / 18px 18px,
    linear-gradient(-45deg, rgb(255 255 255 / 1.5%) 25%, transparent 25%) 0 9px / 18px 18px,
    #0b0e13;
}

#pdf-preview-canvas {
  max-width: 100%;
  height: auto;
  border-radius: 3px;
  box-shadow: 0 12px 34px rgb(0 0 0 / 42%);
}

.pdf-empty-hint {
  max-width: 300px;
  place-self: center;
  color: var(--muted);
  text-align: center;
}

#pdf-preview-canvas:not([hidden]) + .pdf-empty-hint {
  display: none;
}

.pdf-pages {
  display: grid;
  align-content: start;
  gap: 8px;
}

.pdf-page-card {
  display: grid;
  width: 100%;
  min-width: 0;
  min-height: 86px;
  grid-template-columns: 70px minmax(28px, auto) minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  padding: 7px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  color: var(--text-soft);
  cursor: grab;
  text-align: left;
}

.pdf-page-card.selected {
  border-color: rgb(224 68 56 / 48%);
  background: rgb(224 68 56 / 9%);
}

.pdf-page-card:active {
  cursor: grabbing;
}

.pdf-page-card span {
  font-weight: 700;
  text-align: center;
}

.pdf-page-card small {
  min-width: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 0.62rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pdf-thumb {
  width: 70px;
  max-height: 94px;
  border-radius: 3px;
  background: #fff;
  object-fit: contain;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 2px;
  color: #727c8a;
  font: 400 0.66rem/1.4 "Space Mono", ui-monospace, monospace;
}

footer a {
  color: inherit;
  text-underline-offset: 0.16em;
}

footer a:hover {
  color: var(--text);
}

@media (max-width: 1180px) {
  .pdf-toolbar .save-group {
    margin-left: 0;
  }

  .pdf-toolbar .option-group {
    border-left: 0;
  }

  .pdf-toolbar > .save-group {
    border-left: 1px solid var(--line);
  }
}

@media (max-width: 1050px) {
  .pdf-metadata-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pdf-grid {
    grid-template-columns: minmax(220px, 0.36fr) minmax(0, 1fr);
  }

  .pdf-pages-panel {
    max-height: 310px;
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .pdf-pages {
    grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
  }
}

@media (max-width: 800px) {
  .app-shell {
    width: min(100% - 18px, 1460px);
    padding-top: 17px;
  }

  .hero {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .mode-tabs {
    width: 100%;
  }

  .mode-tab {
    flex: 1;
  }

  .toolbar {
    align-items: stretch;
    gap: 8px;
  }

  .toolbar-group,
  .toolbar-group:first-child,
  .toolbar-group:last-child {
    width: 100%;
    padding: 0;
    border-left: 0;
  }

  .document-toolbar .action-group,
  .pdf-toolbar .save-group {
    margin-left: 0;
  }

  .action-group .button,
  .page-action-group .button,
  .save-group .button {
    flex: 1 1 112px;
  }

  .option-group {
    align-items: flex-start;
    flex-direction: column;
  }

  .editor-grid {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .editor-panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  #editor,
  #preview {
    min-height: 42vh;
  }

  .pdf-meta-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .pdf-grid {
    display: block;
  }

  .pdf-outline-panel,
  .pdf-pages-panel {
    max-height: 420px;
    border: 0;
    border-top: 1px solid var(--line);
  }

  .pdf-preview-panel {
    min-height: 58vh;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .app-shell {
    width: min(100% - 12px, 1460px);
  }

  .title-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .fields-group label {
    flex: 1 1 120px;
  }

  .fields-group select {
    width: 100%;
  }

  .pdf-metadata-grid {
    grid-template-columns: 1fr;
  }

  .pdf-metadata-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .panel-header {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    padding-block: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --line: #4b5667;
    --line-strong: #738197;
    --muted: #b4bdc9;
  }
}