/* CBETA Reader — clean reading styles */

:root {
  --bg: #fbf7f0;
  --fg: #000000;
  --fg-secondary: #595959;
  --accent: #6d5000;
  --border: #9f9690;
  --verse: #006300;
  --note: #721045;
  --font-body: serif;
  --font-ui:
    "Noto Sans TC", "Noto Sans CJK TC", "Source Han Sans TC", "PingFang TC",
    "PingFang SC", "Microsoft JhengHei", "Microsoft YaHei", system-ui,
    sans-serif;
  --font-size: 20px;
  --line-height: 1.9;
  --content-width: 48rem;
}

[data-theme="modus-dark"] {
  --bg: #0d0e1c;
  --fg: #d0d0d0;
  --fg-secondary: #989898;
  --accent: #d2b580;
  --border: #61647a;
  --verse: #88ca9f;
  --note: #caa6df;
}

[data-theme="dark"] {
  --bg: #1a1a1a;
  --fg: #d4d0c8;
  --fg-secondary: #999;
  --accent: #c4956a;
  --border: #333;
  --verse: #7ab88a;
  --note: #b89adf;
}

[data-theme="sepia"] {
  --bg: #f4ecd8;
  --fg: #3e3328;
  --fg-secondary: #6b5d4f;
  --accent: #8b572a;
  --border: #d4c9b0;
  --verse: #567a4a;
  --note: #7c5cbf;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size);
  line-height: var(--line-height);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

html.vertical body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 1rem 0;
}

/* --- Settings panel (floating) --- */
.settings-toggle {
  position: fixed;
  right: 0.8rem;
  bottom: var(--btn-bottom, 1.5rem);
  z-index: 150;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-ui);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  writing-mode: horizontal-tb;
}

.settings-toggle:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.settings-toggle.hidden {
  display: none;
}

.settings-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 18rem;
  height: 100vh;
  background: var(--bg);
  border-left: 1px solid var(--border);
  transform: translateX(100%);
  transition: transform 0.25s ease;
  z-index: 200;
  display: flex;
  flex-direction: column;
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
  writing-mode: horizontal-tb;
}

.settings-panel.open {
  transform: translateX(0);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.95rem;
}

.settings-close {
  background: none;
  border: none;
  color: var(--fg-secondary);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 0 0.3rem;
}

.settings-panel .drawer-close-bottom {
  position: absolute;
  bottom: var(--btn-bottom, 1.5rem);
  right: 0.8rem;
  z-index: 10;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-ui);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.settings-panel .drawer-close-bottom:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.settings-body {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  font-size: 14px;
  font-family: var(--font-ui);
}

.settings-body label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  color: var(--fg-secondary);
}

.settings-body select,
.settings-body input[type="range"],
.settings-body input[type="text"] {
  font-size: 13px;
  padding: 2px 4px;
}

.settings-body input[type="text"] {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 4px 6px;
}

.settings-home {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.settings-buttons {
  display: flex;
  gap: 0.5rem;
}

.settings-about {
  border-top: 1px solid var(--border);
  padding-top: 0.6rem;
  font-size: 12px;
  color: var(--fg-secondary);
}

.settings-about summary {
  cursor: pointer;
  font-size: 13px;
}

.settings-about ul {
  margin: 0.4rem 0;
  padding-left: 1.2rem;
}

.settings-about li {
  margin-bottom: 0.3rem;
  line-height: 1.5;
}

.settings-about a {
  color: var(--accent);
  text-decoration: none;
}

.settings-about a:hover {
  text-decoration: underline;
}

/* --- Index / catalog --- */
.catalog {
  width: 85%;
  max-width: 48rem;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

.catalog h1 {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

.catalog-search {
  position: relative;
  margin-bottom: 1.2rem;
}

.catalog-search input {
  width: 100%;
  padding: 0.5rem 2rem 0.5rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.95rem;
  box-sizing: border-box;
}

.catalog-search input:focus {
  outline: none;
  border-color: var(--accent);
}

.catalog-search-clear {
  position: absolute;
  right: 0.4rem;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: none;
  color: var(--fg-secondary);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0 0.3rem;
}

.catalog details {
  margin-bottom: 0.2rem;
}

.catalog summary {
  cursor: pointer;
  padding: 0.15rem 0;
  font-weight: 600;
  color: var(--fg);
  list-style: none;
}

.catalog summary::before {
  content: "▸ ";
  color: var(--fg-secondary);
}

.catalog details[open] > summary::before {
  content: "▾ ";
}

.catalog ul {
  list-style: none;
  padding-left: 0.8rem;
}

.catalog li {
  padding: 0.1rem 0;
}

.catalog a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.catalog a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.catalog .text-meta {
  color: var(--fg);
  opacity: 0.45;
  font-size: 0.75em;
}

/* --- Reader --- */
.reader {
  max-width: var(--content-width);
  margin: 2rem auto;
  padding: 2rem 1.5rem 4rem;
  min-height: calc(100vh - 4rem);
}

.reader-header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.reader-header h1 {
  font-size: 1.8rem;
  margin-bottom: 0.3rem;
}

.reader-header .doc-number {
  color: var(--fg-secondary);
  font-size: 0.85rem;
  font-family: var(--font-ui);
  margin-bottom: 0.2rem;
}

.reader-header .author {
  color: var(--fg-secondary);
  font-size: 0.95rem;
}

.body-text {
  text-indent: 2em;
  margin-bottom: 0.5em;
}

h2.juan {
  text-align: center;
  font-size: 1.3rem;
  margin: 2rem 0 1.5rem;
  color: var(--accent);
}

h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.8rem;
  color: var(--accent);
}

.inline-note {
  color: var(--note);
  font-size: 0.9em;
  text-indent: 2em;
  margin-bottom: 0.5em;
}

span.inline-note {
  text-indent: 0;
  margin-bottom: 0;
}

.byline {
  text-align: center;
  color: var(--fg-secondary);
  margin-bottom: 1rem;
}

.verse {
  margin: 1em 0;
  padding-left: 2em;
  color: var(--verse);
}

.verse-line {
  text-indent: 0;
  margin-bottom: 0;
}

/* --- Navigation --- */
.juan-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.9rem;
}

.juan-nav a {
  color: var(--accent);
  text-decoration: none;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.juan-nav a:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.back-link {
  font-family: var(--font-ui);
  font-size: 0.85rem;
}

.back-link a {
  color: var(--accent);
  text-decoration: none;
}

/* --- Theme button --- */
.theme-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--fg-secondary);
  padding: 2px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font-ui);
}

.theme-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- TOC sidebar --- */
.toc-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 20rem;
  height: 100vh;
  background: var(--bg);
  border-right: 1px solid var(--border);
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  z-index: 200;
  display: flex;
  flex-direction: column;
  box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
}

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

.toc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.95rem;
}

.toc-close {
  background: none;
  border: none;
  color: var(--fg-secondary);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 0 0.3rem;
}

.toc-sidebar .drawer-close-bottom {
  position: absolute;
  bottom: var(--btn-bottom, 1.5rem);
  left: 0.8rem;
  z-index: 10;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-ui);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.toc-sidebar .drawer-close-bottom:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.toc-body {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem 0;
  font-size: 0.85rem;
  font-family: var(--font-ui);
}

.toc-body ul {
  list-style: none;
  padding-left: 1rem;
}

.toc-body > ul {
  padding-left: 0.5rem;
}

.toc-body li {
  padding: 0.15rem 0;
}

.toc-body a {
  color: var(--fg);
  text-decoration: none;
  display: block;
  padding: 0.25rem 0.8rem;
  border-radius: 3px;
  line-height: 1.4;
}

.toc-body a:hover {
  background: var(--border);
}

.toc-body a.toc-active {
  color: var(--accent);
  font-weight: 600;
}

.toc-juan {
  color: var(--fg-secondary);
  font-size: 0.8em;
  margin-left: 0.3em;
}

.toc-toggle {
  position: fixed;
  left: 0.8rem;
  bottom: var(--btn-bottom, 1.5rem);
  z-index: 150;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-ui);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.toc-toggle:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.toc-toggle.hidden {
  display: none;
}

/* --- TOC page --- */
.toc-author {
  color: var(--fg-secondary);
  margin-bottom: 1.5rem;
}

.toc-list {
  list-style: none;
  padding-left: 0;
}

.toc-list ul {
  list-style: none;
  padding-left: 1.5rem;
}

.toc-list li {
  padding: 0.2rem 0;
}

.toc-list a {
  color: var(--fg);
  text-decoration: none;
}

.toc-list a:hover {
  color: var(--accent);
}

/* --- Vertical (traditional) reading mode --- */
.vertical .reader {
  writing-mode: vertical-rl;
  max-width: none;
  height: var(--content-height, 80vh);
  overflow-x: auto;
  overflow-y: hidden;
  padding: 1.5rem 2rem;
  margin: auto;
  min-height: 0;
  scrollbar-width: none;
}

.vertical .reader::-webkit-scrollbar {
  display: none;
}

.vertical .body-text {
  text-indent: 0;
  margin-bottom: 0;
  margin-left: 0;
  line-height: 2.2;
}

.vertical h2.juan {
  margin: 0 2rem 0 1.5rem;
}

.vertical h3 {
  margin: 0 1.5rem 0 0.8rem;
}

.vertical .reader-header {
  border-bottom: none;
  border-left: 1px solid var(--border);
  padding-bottom: 0;
  padding-left: 1.5rem;
  margin-bottom: 0;
  margin-left: 2rem;
}

.vertical .byline {
  margin: 0 1rem 0 0.8rem;
}

.vertical .verse {
  padding-left: 0;
  padding-top: 2em;
  margin: 0 0.5em;
}

.vertical .juan-nav {
  writing-mode: horizontal-tb;
  border-top: none;
  border-right: 1px solid var(--border);
  margin-top: 0;
  margin-left: 2rem;
  margin-right: 2rem;
  padding: 15% 1.5rem;
  flex-direction: column;
  justify-content: space-between;
  height: var(--content-height, 80vh);
  box-sizing: border-box;
}

/* --- Continue reading card --- */
.continue-reading {
  margin-bottom: 1.5rem;
}

.continue-reading a {
  display: block;
  padding: 0.8rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg);
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.continue-reading a:hover {
  border-color: var(--accent);
}

.continue-reading .cr-label {
  color: var(--accent);
  font-size: 0.8rem;
  margin-bottom: 0.2rem;
}

.continue-reading .cr-title {
  font-weight: 600;
}

.continue-reading .cr-meta {
  color: var(--fg-secondary);
  font-size: 0.8rem;
  margin-top: 0.15rem;
}

/* --- Bookmark button & drawer --- */
.bookmark-toggle {
  position: fixed;
  right: 4.5rem;
  bottom: var(--btn-bottom, 1.5rem);
  z-index: 150;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-ui);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  writing-mode: horizontal-tb;
}

.bookmark-toggle:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.bookmark-toggle.hidden {
  display: none;
}

.bookmark-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 20rem;
  height: 100vh;
  background: var(--bg);
  border-left: 1px solid var(--border);
  transform: translateX(100%);
  transition: transform 0.25s ease;
  z-index: 200;
  display: flex;
  flex-direction: column;
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
  writing-mode: horizontal-tb;
}

.bookmark-drawer.open {
  transform: translateX(0);
}

.bookmark-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.95rem;
}

.bookmark-close {
  background: none;
  border: none;
  color: var(--fg-secondary);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 0 0.3rem;
}

.bookmark-drawer .drawer-close-bottom {
  position: absolute;
  bottom: var(--btn-bottom, 1.5rem);
  right: 0.8rem;
  z-index: 10;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-ui);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.bookmark-drawer .drawer-close-bottom:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.bookmark-add-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.5rem 1rem;
  margin: 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  font-family: var(--font-ui);
}

.bookmark-add-btn:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.bookmark-list {
  flex: 1;
  overflow-y: auto;
  padding: 0;
  list-style: none;
  font-family: var(--font-ui);
  font-size: 0.85rem;
}

.bookmark-group {
  list-style: none;
  border-bottom: 1px solid var(--border);
}

.bookmark-group-header {
  display: flex;
  align-items: center;
  padding: 0.6rem 1rem;
  cursor: pointer;
  gap: 0.4rem;
}

.bookmark-group-header:hover {
  background: var(--border);
}

.bookmark-group-arrow {
  font-size: 0.75rem;
  transition: transform 0.15s;
}

.bookmark-group.collapsed .bookmark-group-arrow {
  transform: rotate(-90deg);
}

.bookmark-group-title {
  font-weight: 600;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bookmark-group-count {
  color: var(--fg-secondary);
  font-size: 0.75em;
}

.bookmark-group-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.bookmark-group.collapsed .bookmark-group-list {
  display: none;
}

.bookmark-item {
  display: flex;
  align-items: center;
  border-top: 1px solid var(--border);
}

.bookmark-item a {
  flex: 1;
  padding: 0.4rem 1rem 0.4rem 1.8rem;
  color: var(--fg);
  text-decoration: none;
  display: block;
}

.bookmark-item a:hover {
  background: var(--border);
}

.bookmark-item-meta {
  color: var(--fg-secondary);
  font-size: 0.8em;
}

.bookmark-delete {
  background: none;
  border: none;
  color: var(--fg-secondary);
  cursor: pointer;
  padding: 0.6rem 0.8rem;
  font-size: 1.1rem;
}

.bookmark-delete:hover {
  color: #c44;
}

.bookmark-empty {
  padding: 1rem;
  color: var(--fg-secondary);
  text-align: center;
  font-family: var(--font-ui);
  font-size: 0.85rem;
}

/* --- Lookup button (查字) --- */
.lookup-btn {
  position: absolute;
  z-index: 160;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.3rem 0.7rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font-ui);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
  writing-mode: horizontal-tb;
  white-space: nowrap;
  display: none;
}

.lookup-btn:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.lookup-btn.visible {
  display: block;
}

/* --- Page break anchors --- */
.pb {
  display: block;
  height: 0;
}

/* --- Restore toast --- */
.restore-toast {
  position: fixed;
  bottom: 3.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--fg);
  color: var(--bg);
  padding: 0.5rem 1.2rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-family: var(--font-ui);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 300;
  pointer-events: none;
  writing-mode: horizontal-tb;
}

.restore-toast.visible {
  opacity: 0.85;
}

/* --- Fullscreen: ensure nothing is clipped --- */
/* Drawer height: use dvh for mobile URL bar, fallback to vh */
@supports (height: 100dvh) {
  .settings-panel,
  .toc-sidebar,
  .bookmark-drawer {
    height: 100dvh;
  }
}

/* Hide width control in vertical, show height control */
.vertical .width-control {
  display: none;
}
label.height-control {
  display: none;
}
.vertical label.height-control {
  display: flex;
}