/* ===== CSS Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { min-height: 100dvh; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===== Theme Variables ===== */
:root,
[data-theme="light"] {
  --bg-primary: #faf8f5;
  --bg-secondary: #f0ece6;
  --bg-sidebar: #f5f2ed;
  --bg-header: rgba(250, 248, 245, 0.92);
  --bg-cover: #f0ece6;
  --text-primary: #2c2c2c;
  --text-secondary: #5a5a5a;
  --text-muted: #8a8a8a;
  --border-color: #e0dbd4;
  --accent: #2a6b5a;
  --accent-hover: #1e5244;
  --accent-light: #e8f4f0;
  --highlight-color: #fff3b0;
  --highlight-hover: #ffe066;
  --cafecito-bg: #f9f0e6;
  --cafecito-border: #e8d5bf;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
  --toolbar-bg: #2c2c2c;
  --toolbar-text: #faf8f5;
  --toast-bg: #2c2c2c;
  --toast-text: #faf8f5;
  --overlay-bg: rgba(0,0,0,0.3);
}

[data-theme="dark"] {
  --bg-primary: #1a1a2e;
  --bg-secondary: #222240;
  --bg-sidebar: #1e1e36;
  --bg-header: rgba(26, 26, 46, 0.95);
  --bg-cover: #16162b;
  --text-primary: #e0ddd5;
  --text-secondary: #b0ada5;
  --text-muted: #706d65;
  --border-color: #333355;
  --accent: #5cb89a;
  --accent-hover: #7dd4b6;
  --accent-light: #1e3a30;
  --highlight-color: #5a4e1a;
  --highlight-hover: #7a6a2a;
  --cafecito-bg: #2a2540;
  --cafecito-border: #3a3560;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
  --toolbar-bg: #e0ddd5;
  --toolbar-text: #1a1a2e;
  --toast-bg: #e0ddd5;
  --toast-text: #1a1a2e;
  --overlay-bg: rgba(0,0,0,0.6);
}

/* ===== Base Typography ===== */
body {
  font-family: 'Literata', Georgia, 'Times New Roman', serif;
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.75;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===== Layout ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  height: 56px;
  padding: 0 1rem;
  background: var(--bg-header);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header__menu-btn {
  display: none;
  padding: 0.5rem;
  border-radius: 6px;
  color: var(--text-secondary);
}
.header__menu-btn:hover { background: var(--bg-secondary); }

.header__title {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  white-space: nowrap;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
}

.header__theme-btn,
.header__share-btn,
.header__bookmark-btn {
  padding: 0.4rem;
  border-radius: 6px;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s;
}
.header__theme-btn:hover,
.header__share-btn:hover,
.header__bookmark-btn:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Theme icon visibility */
[data-theme="light"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }

/* ===== Language Switcher ===== */
.lang-switcher {
  position: relative;
}

.lang-switcher__toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s;
}
.lang-switcher__toggle:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.lang-switcher__current {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  padding: 4px;
  min-width: 140px;
  z-index: 200;
  animation: toolbar-in 0.15s ease-out;
}
.lang-dropdown.open {
  display: flex;
  flex-direction: column;
}

.lang-btn {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  color: var(--text-secondary);
  transition: all 0.15s;
  text-align: left;
}
.lang-btn:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}
.lang-btn.active {
  color: var(--accent);
  font-weight: 600;
}

/* ===== Sidebar ===== */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 49;
  background: var(--overlay-bg);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.sidebar-overlay.visible {
  display: block;
  opacity: 1;
}

.sidebar {
  position: fixed;
  top: 56px;
  left: 0;
  bottom: 0;
  width: 280px;
  z-index: 50;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  padding: 1.25rem 0;
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem 1rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 0.75rem;
}

.sidebar__title {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.sidebar__close {
  display: none;
  padding: 0.25rem;
  border-radius: 4px;
  color: var(--text-muted);
}
.sidebar__close:hover { background: var(--bg-secondary); }

/* TOC Navigation */
.toc-item {
  display: block;
}

.toc-link {
  display: block;
  padding: 0.5rem 1.25rem;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: background 0.15s, color 0.15s;
  border-left: 3px solid transparent;
}
.toc-link:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}
.toc-link.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-light);
  font-weight: 500;
}

/* Collapsible chapter */
.toc-chapter-row {
  display: flex;
  align-items: center;
}

.toc-link--chapter {
  flex: 1;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.toc-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-right: 0.5rem;
  margin-top: 0.5rem;
  border-radius: 4px;
  color: var(--text-muted);
  transition: transform 0.2s, color 0.15s;
  flex-shrink: 0;
}
.toc-toggle:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.toc-item--collapsible .toc-toggle svg {
  transition: transform 0.2s ease;
}
.toc-item--open .toc-toggle svg {
  transform: rotate(180deg);
}

.toc-subsections {
  display: none;
  overflow: hidden;
}
.toc-item--open .toc-subsections {
  display: block;
}

.toc-link--sub {
  padding-left: 2.25rem;
  font-size: 0.82rem;
}

/* Bookmarks in sidebar */
.sidebar__bookmarks {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.sidebar__bookmarks-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem 0.5rem;
  cursor: pointer;
}
.sidebar__bookmarks-header:hover .sidebar__subtitle {
  color: var(--text-secondary);
}

.sidebar__bookmarks-chevron {
  color: var(--text-muted);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}
.sidebar__bookmarks.open .sidebar__bookmarks-chevron {
  transform: rotate(180deg);
}

.sidebar__subtitle {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.sidebar__bookmarks .bookmarks-list {
  display: none;
}
.sidebar__bookmarks.open .bookmarks-list {
  display: block;
}

.bookmarks-list {
  padding: 0 0.5rem;
}

.bookmark-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s;
}
.bookmark-item:hover {
  background: var(--bg-secondary);
}
.bookmark-item__icon { font-size: 0.7rem; flex-shrink: 0; }
.bookmark-item__text { display: flex; flex-direction: column; gap: 0.1rem; min-width: 0; }
.bookmark-item__title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bookmark-item__chapter { font-size: 0.65rem; color: var(--text-muted); }
.bookmark-item__remove {
  margin-left: auto;
  opacity: 0;
  padding: 0.2rem;
  border-radius: 3px;
  font-size: 0.7rem;
  color: var(--text-muted);
}
.bookmark-item:hover .bookmark-item__remove { opacity: 1; }
.bookmark-item__remove:hover { background: var(--bg-primary); }

/* ===== Main ===== */
.main {
  margin-left: 280px;
  min-height: calc(100dvh - 56px);
  transition: margin-left 0.3s ease;
}

/* ===== Cover Page ===== */
.cover {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100dvh - 56px);
  padding: 2rem;
  background: var(--bg-cover);
  transition: background-color 0.3s ease;
}

.cover__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  max-width: 500px;
  text-align: center;
}

.cover__image {
  width: 280px;
  border-radius: 4px;
  box-shadow: var(--shadow-lg);
}

.cover__text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.cover__author {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.cover__title {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.cover__publisher {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.cover__actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.cover__btn {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.8rem 2rem;
  border-radius: 8px;
  transition: all 0.2s;
  text-align: center;
}

.cover__btn--primary {
  background: var(--accent);
  color: #fff;
}
.cover__btn--primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.cover__btn--secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.cover__btn--secondary:hover {
  background: var(--accent-light);
}

/* ===== Reader ===== */
.reader {
  max-width: 740px;
  margin: 0 auto;
  padding: 3rem clamp(1.25rem, 5vw, 3rem) 2rem;
}

.reader__content {
  /* Book typography */
}

.reader__content h1 {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 2rem;
  color: var(--text-primary);
}

.reader__content h2 {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.reader__content p {
  margin-bottom: 1em;
  text-align: justify;
  hyphens: auto;
}

.reader__content em {
  font-style: italic;
}

.reader__content blockquote {
  text-align: center;
  font-style: italic;
  margin: 1.5rem 0;
  padding: 1rem 2rem;
  color: var(--text-secondary);
  border-left: none;
}

.reader__content figure {
  margin: 2rem 0;
  text-align: center;
}

.reader__content figure img {
  margin: 0 auto;
  border-radius: 4px;
}

.reader__content figcaption {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.reader__content section {
  padding-top: 1rem;
}

.reader__content section + section {
  border-top: 1px solid var(--border-color);
  margin-top: 2rem;
  padding-top: 2rem;
}

/* Front matter styles */
.reader__content .front-matter {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.reader__content .front-matter p {
  text-align: center;
  margin-bottom: 0.75rem;
}

.reader__content .cc-badge {
  display: inline-flex;
  gap: 0.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border-radius: 6px;
  margin: 1rem 0;
}

/* Intro centered text */
.reader__content .intro-centered {
  text-align: center;
  font-style: italic;
  margin: 1.5rem auto;
  max-width: 500px;
}

.reader__content .intro-separator {
  text-align: center;
  margin: 1rem 0;
  color: var(--text-muted);
  font-size: 1.2rem;
}

/* Highlight marks */
.reader__content mark,
mark.user-highlight {
  background-color: var(--highlight-color);
  color: inherit;
  padding: 0.1em 0;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 0.2s;
}
mark.user-highlight:hover {
  background-color: var(--highlight-hover);
}

/* ===== Section Navigation ===== */
.reader__nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.reader__nav-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s;
  max-width: 45%;
}
.reader__nav-btn:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}
.reader__nav-btn--next {
  margin-left: auto;
  text-align: right;
}

.reader__nav-arrow {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.reader__nav-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader__nav-btn.hidden {
  visibility: hidden;
}

/* ===== Cafecito CTA ===== */
.cafecito {
  margin-top: 2.5rem;
  text-align: center;
}

.cafecito__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--cafecito-bg);
  border: 1px solid var(--cafecito-border);
  border-radius: 10px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.cafecito__link:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  color: var(--text-primary);
}
.cafecito__icon { font-size: 1.2rem; }

/* ===== Footer ===== */
.footer {
  padding: 1.5rem;
  text-align: center;
  border-top: 1px solid var(--border-color);
  margin-left: 280px;
  transition: margin-left 0.3s ease, border-color 0.3s ease;
}

.footer__text {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===== Floating Toolbar ===== */
.floating-toolbar {
  position: fixed;
  z-index: 200;
  display: flex;
  gap: 2px;
  padding: 4px;
  background: var(--toolbar-bg);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  animation: toolbar-in 0.15s ease-out;
}

@keyframes toolbar-in {
  from { opacity: 0; transform: translateY(4px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.floating-toolbar__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 32px;
  border-radius: 6px;
  color: var(--toolbar-text);
  transition: background 0.15s;
}
.floating-toolbar__btn:hover {
  background: rgba(255,255,255,0.15);
}
[data-theme="dark"] .floating-toolbar__btn:hover {
  background: rgba(0,0,0,0.15);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  z-index: 300;
  padding: 0.6rem 1.2rem;
  background: var(--toast-bg);
  color: var(--toast-text);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
}
.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== Demo Banner ===== */
.demo-banner {
  position: fixed;
  bottom: 0;
  left: 280px;
  right: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: #fff;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.8rem;
  transition: left 0.3s ease, transform 0.3s ease;
}
.demo-banner.hidden {
  transform: translateY(100%);
}

.demo-banner__close {
  color: rgba(255,255,255,0.7);
  font-size: 1.2rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}
.demo-banner__close:hover {
  color: #fff;
  background: rgba(255,255,255,0.15);
}

/* ===== Responsive ===== */

/* Tablet */
@media (max-width: 1023px) {
  .header__menu-btn { display: flex; }
  .sidebar__close { display: block; }

  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }

  .main {
    margin-left: 0;
  }

  .footer {
    margin-left: 0;
  }

  .demo-banner {
    left: 0;
  }
}

/* Mobile */
@media (max-width: 767px) {
  .header {
    gap: 0.5rem;
    padding: 0 0.75rem;
  }

  .header__title {
    font-size: 1rem;
  }

  .lang-btn {
    font-size: 0.65rem;
    padding: 0.25rem 0.35rem;
  }

  .sidebar {
    width: 100%;
  }

  .cover__image {
    width: 200px;
  }

  .cover__title {
    font-size: 2rem;
  }

  .reader {
    padding: 2rem 1.5rem 1.5rem;
  }

  .reader__content p {
    text-align: left;
    hyphens: none;
  }

  .reader__content h1 {
    font-size: 1.5rem;
  }

  .reader__content h2 {
    font-size: 1.15rem;
  }

  .reader__nav {
    flex-direction: column;
  }

  .reader__nav-btn {
    max-width: 100%;
  }

  .reader__nav-btn--next {
    flex-direction: row-reverse;
    text-align: left;
  }

  .floating-toolbar {
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    position: fixed;
    top: auto;
  }
}

/* ===== Share Modal ===== */
.share-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: var(--overlay-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fade-in 0.2s ease;
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.share-modal {
  background: var(--bg-primary);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 380px;
  overflow: hidden;
  animation: modal-in 0.25s ease-out;
}

@keyframes modal-in {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.share-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.share-modal__title {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.share-modal__close {
  padding: 0.3rem;
  border-radius: 6px;
  color: var(--text-muted);
}
.share-modal__close:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.share-modal__body {
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.share-modal__qr {
  background: #fff;
  padding: 12px;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

.share-modal__qr img {
  width: 200px;
  height: 200px;
  border-radius: 4px;
}

.share-modal__link-row {
  display: flex;
  gap: 0.5rem;
  width: 100%;
}

.share-modal__input {
  flex: 1;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.8rem;
  outline: none;
  min-width: 0;
}
.share-modal__input:focus {
  border-color: var(--accent);
}

.share-modal__copy {
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background 0.2s;
}
.share-modal__copy:hover {
  background: var(--accent-hover);
}

/* Print */
@media print {
  .header, .sidebar, .sidebar-overlay, .floating-toolbar,
  .toast, .demo-banner, .cafecito, .reader__nav, .footer { display: none; }
  .main { margin-left: 0; }
  .reader { max-width: 100%; padding: 0; }
}