:root {
  --bg: #f4f6f8;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --text: #2e343b;
  --muted: #69727b;
  --border: rgba(46, 52, 59, 0.1);
  --accent: #4b6f88;
  --accent-strong: #2f4d62;
  --shadow: 0 10px 28px rgba(25, 37, 48, 0.06);
  --reader-font-size: 26px;
  --reader-font-size-base: 26px;
  --reader-line-height: 1.75;
  --reader-line-height-preach: 2.06;
  --chrome-offset: 5rem;
  --reader-width: 860px;
  --paper: #fefdfa;
  --paper-edge: rgba(255, 255, 255, 0.76);
  --mark-title: #cbffd7;
  --mark-subtitle: #f3d7b6;
  --mark-h1-dark: #42454c;
  --mark-h2: #bdf7ff;
  --mark-h3: #ddff74;
  --mark-h4: #ffd2d8;
  --mark-h5: #d9d8ff;
  --mark-h6: #fff39b;
  --mark-quote: #ffe2bf;
  --link: #4f7bc7;
}

body[data-theme="sepia"] {
  --bg: #ece4d6;
  --surface: rgba(251, 247, 239, 0.82);
  --surface-strong: #fbf7ef;
  --text: #382f26;
  --muted: #75685b;
  --border: rgba(80, 58, 38, 0.14);
  --accent: #7c5f3f;
  --accent-strong: #5b4328;
  --shadow: 0 12px 28px rgba(59, 43, 28, 0.06);
  --paper: #fffaf1;
  --paper-edge: rgba(255, 250, 241, 0.86);
  --link: #376db6;
}

body[data-theme="dark"] {
  --bg: #131518;
  --surface: rgba(32, 36, 40, 0.84);
  --surface-strong: rgba(27, 31, 35, 0.94);
  --text: #e9e4da;
  --muted: #b8b0a1;
  --border: rgba(233, 228, 218, 0.1);
  --accent: #d7ba93;
  --accent-strong: #ecd5b3;
  --shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
  --paper: #191c20;
  --paper-edge: rgba(25, 28, 32, 0.92);
  --mark-title: #6ead7a;
  --mark-subtitle: #b59064;
  --mark-h1-dark: #d6dce4;
  --mark-h2: #3f8894;
  --mark-h3: #7d8f36;
  --mark-h4: #8b5760;
  --mark-h5: #6763a5;
  --mark-h6: #a2942c;
  --mark-quote: #7d674b;
  --link: #8cb4ff;
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.5), transparent 30%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.desktop-only {
  display: inline-flex;
}

.mobile-only {
  display: none;
}

body[data-page="reader"] {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.26), transparent 18%),
    var(--bg);
}

a {
  color: inherit;
}

button,
select {
  font: inherit;
}

[hidden] {
  display: none !important;
}

.shell {
  width: min(980px, calc(100% - 24px));
  margin: 0 auto;
  padding: 14px 0 28px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  margin-bottom: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topbar h1,
.panel h2,
.floating-head h2 {
  margin: 0;
  font-weight: 700;
}

.subtitle {
  margin: 6px 0 0;
  color: var(--muted);
}

.button,
.select-input,
.hud-chip {
  border: 1px solid var(--border);
  color: var(--text);
}

.button,
.hud-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 14px;
  text-decoration: none;
  cursor: pointer;
  background: var(--surface-strong);
}

.button-secondary {
  background: transparent;
}

.button:active,
.hud-chip:active,
.text-button:active {
  transform: translateY(1px);
}

.text-button {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
}

.library-layout {
  display: grid;
  gap: 14px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 18px;
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.panel-highlight {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), var(--surface));
}

.panel-note p {
  margin: 0.5rem 0 0;
}

.panel-head,
.floating-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.status-pill {
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(75, 111, 136, 0.08);
  color: var(--accent);
  font-size: 13px;
}

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

.continue-empty,
.doc-card,
.continue-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
}

.continue-empty {
  padding: 18px;
  color: var(--muted);
}

.continue-card {
  display: block;
  padding: 18px;
  text-decoration: none;
}

.continue-card p,
.doc-card p {
  margin: 0.45rem 0 0;
}

.docs-list {
  display: grid;
  gap: 10px;
}

.doc-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  text-decoration: none;
}

.doc-card-main {
  min-width: 0;
}

.doc-card h3 {
  margin: 0;
  font-size: 19px;
}

.doc-meta {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.doc-progress {
  min-width: 68px;
  text-align: right;
  color: var(--accent);
  font-weight: 600;
}

.reader-shell {
  position: relative;
  min-height: 100vh;
  width: 100%;
}

.reader-progress-track {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 40;
  width: 100%;
  height: 3px;
  background: rgba(80, 92, 104, 0.12);
  overflow: hidden;
}

.reader-progress-bar {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--mark-h2));
}

.reader-hud {
  position: fixed;
  top: 10px;
  left: 10px;
  right: 10px;
  z-index: 35;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  transition: transform 160ms ease, opacity 160ms ease;
}

.hud-center,
.hud-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hud-center {
  justify-content: center;
  min-width: 0;
}

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

.hud-chip {
  min-height: 38px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--surface);
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.hud-link {
  justify-self: start;
}

.hud-timer {
  min-width: 76px;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.reader-doc-name {
  margin: 0;
  max-width: 300px;
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.reader-floating-layer {
  position: fixed;
  top: 56px;
  left: 12px;
  right: 12px;
  z-index: 34;
  pointer-events: none;
}

.floating-panel {
  pointer-events: auto;
  width: min(290px, calc(100vw - 24px));
  max-height: calc(100vh - 88px);
  overflow: auto;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.menu-panel {
  margin-left: auto;
}

.settings-panel {
  margin-left: auto;
}

.toc-panel {
  margin-top: 10px;
}

.control-group + .control-group {
  margin-top: 14px;
}

.control-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 14px;
}

.stepper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.stepper span {
  flex: 1;
  text-align: center;
}

.stepper-soft .hud-chip {
  min-width: 48px;
}

.quick-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.quick-actions .hud-chip,
.quick-action-link {
  flex: 1;
}

.select-input {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.6);
}

.reader-stage {
  min-height: 100vh;
  padding: 72px 0 110px;
}

.reader-article {
  width: min(100%, var(--reader-width));
  margin: 0 auto;
  padding: 36px 30px 160px;
  background:
    linear-gradient(180deg, var(--paper-edge), transparent 12%),
    transparent;
  color: var(--text);
  font-family: "Avenir Next", "Avenir", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: var(--reader-font-size);
  line-height: var(--reader-line-height);
  letter-spacing: -0.01em;
}

.reader-article > *:first-child {
  margin-top: 0;
}

.reader-article h1,
.reader-article h2,
.reader-article h3,
.reader-article h4,
.reader-article h5,
.reader-article h6 {
  display: inline-block;
  margin-bottom: 0.85rem;
  padding: 0.02em 0.16em 0.06em;
  font-family: "Baskerville", "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  font-weight: 700;
  line-height: 1.08;
  border-radius: 2px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  scroll-margin-top: calc(var(--chrome-offset) + 16px);
}

.reader-article h1 {
  margin-top: 0;
  background: var(--mark-title);
  color: var(--text);
  font-size: clamp(42px, 6vw, 66px);
  font-style: italic;
  letter-spacing: -0.04em;
}

.reader-article h2 {
  margin-top: 2.3em;
  background: var(--mark-h2);
  color: var(--text);
  font-size: clamp(28px, 3.8vw, 40px);
  letter-spacing: -0.03em;
}

.reader-article h3 {
  margin-top: 1.9em;
  background: var(--mark-h3);
  color: var(--text);
  font-size: clamp(22px, 3.1vw, 31px);
  font-style: italic;
}

.reader-article h4 {
  margin-top: 1.7em;
  background: var(--mark-h4);
  font-size: clamp(18px, 2.5vw, 24px);
  font-style: italic;
}

.reader-article h5 {
  margin-top: 1.5em;
  background: var(--mark-h5);
  font-size: clamp(17px, 2.2vw, 22px);
}

.reader-article h6 {
  margin-top: 1.3em;
  background: var(--mark-h6);
  font-size: clamp(16px, 2vw, 20px);
}

.reader-article .doc-subtitle {
  display: inline-block;
  margin-top: 0;
  margin-bottom: 1.2rem;
  padding: 0.02em 0.16em 0.06em;
  background: var(--mark-subtitle);
  border-radius: 2px;
  font-family: "Baskerville", "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  font-size: clamp(24px, 3vw, 34px);
  font-style: italic;
  line-height: 1.12;
}

.reader-article .align-center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.reader-article .align-right {
  text-align: right;
  margin-left: auto;
}

.reader-article .align-justify {
  text-align: justify;
}

.reader-article p,
.reader-article li,
.reader-article blockquote {
  margin: 0 0 1em;
}

.reader-article p {
  max-width: 36em;
}

.reader-article ul,
.reader-article ol {
  max-width: 35em;
  padding-left: 1.3em;
}

.reader-article li::marker {
  color: var(--accent);
}

.reader-article blockquote {
  max-width: 34em;
  padding: 0.1em 0.35em;
  background: var(--mark-quote);
  border-radius: 2px;
  color: var(--text);
  font-style: italic;
}

.reader-article strong {
  font-weight: 700;
}

.reader-article mark {
  padding: 0.02em 0.12em;
  color: inherit;
  background: var(--mark-h2);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.reader-article mark.tone-title {
  background: var(--mark-title);
}

.reader-article mark.tone-subtitle {
  background: var(--mark-subtitle);
}

.reader-article mark.tone-cyan {
  background: var(--mark-h2);
}

.reader-article mark.tone-lime {
  background: var(--mark-h3);
}

.reader-article mark.tone-peach {
  background: var(--mark-quote);
}

.reader-article mark.tone-pink {
  background: var(--mark-h4);
}

.reader-article mark.tone-lavender {
  background: var(--mark-h5);
}

.reader-article mark.tone-yellow {
  background: var(--mark-h6);
}

.reader-article a {
  color: var(--link);
  text-decoration: underline;
}

.loading-message {
  margin: 0;
  color: var(--muted);
}

.toc {
  display: grid;
  gap: 8px;
}

.toc a {
  display: block;
  padding: 8px 10px;
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
}

.toc a.is-level-2 {
  margin-left: 10px;
}

.toc a.is-level-3 {
  margin-left: 20px;
}

.toc a.is-active {
  background: rgba(189, 247, 255, 0.42);
  color: var(--accent-strong);
}

body.reader-preach {
  --reader-font-size: calc(var(--reader-font-size-base) + 6px);
  --reader-line-height: var(--reader-line-height-preach);
}

body.reader-preach .reader-doc-name {
  display: none;
}

body.reader-preach .reader-article {
  width: min(100%, 940px);
  padding-top: 48px;
}

body.chrome-collapsed .reader-hud {
  transform: translateY(-18px);
  opacity: 0.08;
}

body.chrome-collapsed .reader-hud:hover {
  transform: none;
  opacity: 1;
}

@media (max-width: 900px) {
  .reader-hud {
    grid-template-columns: auto 1fr auto;
  }

  .reader-doc-name {
    max-width: 180px;
  }

  .reader-article {
    padding-left: 22px;
    padding-right: 22px;
  }
}

@media (pointer: coarse), (max-width: 1024px) {
  .desktop-only {
    display: none !important;
  }

  .mobile-only {
    display: inline-flex;
  }

  .reader-hud {
    grid-template-columns: 1fr auto 1fr;
  }

  .hud-link {
    display: none !important;
  }

  .hud-center {
    justify-content: center;
    grid-column: 2;
  }

  .hud-actions {
    grid-column: 3;
  }

  .reader-doc-name {
    display: none !important;
  }

  .hud-chip {
    min-height: 36px;
    padding: 0 11px;
  }

  .reader-stage {
    padding-top: 68px;
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100%, calc(100% - 12px));
  }

  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .doc-card {
    flex-direction: column;
  }

  .doc-progress {
    min-width: 0;
    text-align: left;
  }

  .reader-hud {
    left: 6px;
    right: 6px;
    gap: 6px;
  }

  .hud-chip {
    min-height: 36px;
    padding: 0 10px;
  }

  .reader-floating-layer {
    left: 8px;
    right: 8px;
  }

  .floating-panel,
  .settings-panel,
  .toc-panel {
    width: 100%;
  }

  .reader-stage {
    padding-top: 66px;
  }

  .reader-article {
    padding-left: 16px;
    padding-right: 16px;
    padding-bottom: 120px;
  }

  .reader-article p,
  .reader-article ul,
  .reader-article ol,
  .reader-article blockquote {
    max-width: none;
  }
}