:root {
  --bg: #f4efe6;
  --text: #2b241c;
  --muted: #5f5548;
  --line: rgba(43, 36, 28, 0.12);

  --panel: #fbf7f0;
  --panel-border: #d9d0c4;

  --btn-bg: #f1e9de;
  --btn-hover: #e7ddcf;
  --btn-active: #d9e7f7;

  --link: #3f6ea8;
  --code-bg: rgba(43, 36, 28, 0.08);
  --pre-bg: rgba(43, 36, 28, 0.06);
  --quote-bg: #eaf3ff;
  --quote-text: #37506f;
  --quote-border: #8fb7e8;

  --toolbar-panel: #f4efe6;
  --toolbar-btn-text: #2d2720;
  --toolbar-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
  --toolbar-top-shadow: inset 0 -1px 0 rgba(43, 36, 28, 0.06);
  --toolbar-font: "Space Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.28s ease, color 0.28s ease;
}

/* Themes */

body.theme-paper {
  --bg: #f4efe6;
  --text: #2b241c;
  --muted: #5f5548;
  --line: rgba(43, 36, 28, 0.12);

  --panel: #fbf7f0;
  --panel-border: #d9d0c4;

  --btn-bg: #f1e9de;
  --btn-hover: #e7ddcf;
  --btn-active: #d9e7f7;

  --link: #3f6ea8;
  --code-bg: rgba(43, 36, 28, 0.08);
  --pre-bg: rgba(43, 36, 28, 0.06);

  --quote-bg: #e7dccb;
  --quote-text: #5f4b3a;
  --quote-border: #b79b7d;

  --toolbar-panel: #f4efe6;
  --toolbar-btn-text: #2d2720;
  --toolbar-shadow: 0 6px 18px rgba(0, 0, 0, 0.05);
  --toolbar-top-shadow: inset 0 -1px 0 rgba(43, 36, 28, 0.06);
}

body.theme-sepia {
  --bg: #efe3cf;
  --text: #3d2f22;
  --muted: #6d5c4d;
  --line: rgba(61, 47, 34, 0.14);

  --panel: #f6ead7;
  --panel-border: #cfb798;

  --btn-bg: #ead9c2;
  --btn-hover: #dfccb2;
  --btn-active: #d8c0a2;

  --link: #8a5a2b;
  --code-bg: rgba(61, 47, 34, 0.08);
  --pre-bg: rgba(61, 47, 34, 0.06);

  --quote-bg: #e7dccb;
  --quote-text: #5f4b3a;
  --quote-border: #b79b7d;

  --toolbar-panel: #efe3cf;
  --toolbar-btn-text: #433225;
  --toolbar-shadow: 0 6px 18px rgba(79, 53, 24, 0.08);
  --toolbar-top-shadow: inset 0 -1px 0 rgba(61, 47, 34, 0.08);
}

body.theme-dark {
  --bg: #16181c;
  --text: #ece7de;
  --muted: #bdb4a7;
  --line: rgba(255, 255, 255, 0.08);

  --panel: #22262c;
  --panel-border: #303640;

  --btn-bg: #2a2f37;
  --btn-hover: #343b45;
  --btn-active: #3b4960;

  --link: #8ab4ff;
  --code-bg: rgba(255, 255, 255, 0.08);
  --pre-bg: rgba(255, 255, 255, 0.06);

  --quote-bg: #1d2838;
  --quote-text: #cfe0ff;
  --quote-border: #7ea9df;

  --toolbar-panel: #16181c;
  --toolbar-btn-text: #ece7de;
  --toolbar-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  --toolbar-top-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.06);
}

/* Reader text fonts */

.reader__content.font-georgia {
  font-family: Georgia, "Times New Roman", serif;
}

.reader__content.font-system {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.reader {
  max-width: 760px;
  margin: 0 auto;
  padding:
    max(10px, env(safe-area-inset-top))
    14px
    max(28px, env(safe-area-inset-bottom))
    14px;
  box-sizing: border-box;
}

.reader__toolbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: flex-start;
  padding: 6px 0 12px;
  background: none;
  will-change: transform;
  transition: transform 0.88s cubic-bezier(0.16, 1, 0.3, 1);
  transform: translate3d(0, 0, 0);
  backface-visibility: hidden;
  contain: layout style paint;
}

.reader__toolbar,
.reader__toolbar * {
  font-family: var(--toolbar-font) !important;
}

.reader__toolbar.is-hidden {
  transform: translate3d(0, calc(-100% - 8px), 0);
  pointer-events: none;
}

.reader__font-controls,
.reader__theme-controls,
.reader__family-controls {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border-radius: 14px;
  background: var(--toolbar-panel);
  border: 1px solid var(--panel-border);
  box-shadow: var(--toolbar-shadow), var(--toolbar-top-shadow);
  box-sizing: border-box;
  flex-wrap: nowrap;
}

.reader__font-btn,
.reader__theme-btn,
.reader__family-btn {
  min-height: 38px;
  border: 0;
  border-radius: 10px;
  padding: 7px 14px;
  background: var(--btn-bg);
  color: var(--toolbar-btn-text);
  cursor: pointer;
  font-family: var(--toolbar-font) !important;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.01em;
  transition:
    background-color 0.22s ease,
    transform 0.34s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.22s ease;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  user-select: none;
  touch-action: manipulation;
}

.reader__font-btn {
  min-width: 44px;
}

.reader__theme-btn,
.reader__family-btn {
  padding: 7px 12px;
}

.reader__font-btn:hover,
.reader__theme-btn:hover,
.reader__family-btn:hover {
  background: var(--btn-hover);
}

.reader__font-btn.is-active,
.reader__theme-btn.is-active,
.reader__family-btn.is-active {
  background: var(--btn-active);
  transform: translate3d(0, -1px, 0);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.03);
}

.reader__content {
  max-width: none;
  font-size: 19px;
  line-height: 1.68;
  letter-spacing: 0.005em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.reader__content p {
  margin: 0 0 0.82em;
}

.reader__content p:last-child {
  margin-bottom: 0;
}

.reader__content a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

.reader__content code {
  padding: 0.12em 0.32em;
  background: var(--code-bg);
  border-radius: 6px;
  font-size: 0.95em;
}

.reader__content pre {
  overflow-x: auto;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--pre-bg);
}

.reader__content .tg-blockquote {
  margin: 0.9em 0;
  padding: 0.6em 0.9em;
  border-left: 4px solid var(--quote-border);
  color: var(--quote-text);
  background: var(--quote-bg);
  border-radius: 12px;
}

.reader__content .tg-blockquote p {
  margin: 0;
}

.reader__content .tg-inline-quote {
  padding: 0.08em 0.35em;
  margin: 0 0.08em;
  border-left: 3px solid var(--quote-border);
  background: var(--quote-bg);
  color: var(--quote-text);
  border-radius: 8px;
}

.reader__empty,
.reader__home {
  padding: 28px 0;
}

.reader__empty h1,
.reader__home h1 {
  margin: 0 0 0.6em;
  font-size: 1.8rem;
  line-height: 1.2;
}

.reader__empty p,
.reader__home p {
  margin: 0 0 0.8em;
  color: var(--muted);
}