/* Reader styles — immersive chapter reading experience.
 * Themes: day (white), night (dark), eye (warm yellow).
 * Does NOT share theme.css — fully standalone for reader page. */
:root {
  --reader-bg: #fff; --reader-fg: #1a1a1a; --reader-fg-secondary: #666;
  --reader-fg-muted: #999; --reader-border: #e5e5e5; --reader-card-bg: #f8f8f8;
  --reader-accent: #e74c3c; --reader-accent-light: rgba(231,76,60,0.1);
  --reader-header-bg: rgba(255,255,255,0.95); --reader-toolbar-bg: rgba(255,255,255,0.95);
  --font-size: 18px; --line-height: 1.9;
  --content-font: 'Noto Serif SC', 'Songti SC', Georgia, serif;
  --ui-font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
}
.theme-eye {
  --reader-bg: #f5edce; --reader-fg: #3d3520; --reader-fg-secondary: #6b5e42;
  --reader-fg-muted: #9a8b68; --reader-border: #d4c99a; --reader-card-bg: #ece4c4;
  --reader-header-bg: rgba(245,237,206,0.95); --reader-toolbar-bg: rgba(245,237,206,0.95);
}
.theme-night {
  --reader-bg: #1a1a2e; --reader-fg: #c8c8d0; --reader-fg-secondary: #8888a0;
  --reader-fg-muted: #555570; --reader-border: #2a2a40; --reader-card-bg: #22223a;
  --reader-accent: #ff6b6b; --reader-accent-light: rgba(255,107,107,0.15);
  --reader-header-bg: rgba(26,26,46,0.95); --reader-toolbar-bg: rgba(26,26,46,0.95);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  background: var(--reader-bg); color: var(--reader-fg);
  font-family: var(--ui-font); line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s; overflow-x: hidden;
}
body.font-small { --font-size: 15px; --line-height: 1.8; }
body.font-medium { --font-size: 18px; --line-height: 1.9; }
body.font-large { --font-size: 22px; --line-height: 2.0; }

/* ===== HEADER ===== */
.reader-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; gap: 12px; padding: 0 16px; height: 48px;
  background: var(--reader-header-bg); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--reader-border);
  transform: translateY(0); transition: transform 0.3s ease, background 0.3s;
}
.reader-header.hidden { transform: translateY(-100%); }
.header-back {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; color: var(--reader-fg); text-decoration: none; flex-shrink: 0;
}
.header-title { flex: 1; min-width: 0; text-align: center; }
.header-novel {
  display: block; font-size: 0.8rem; font-weight: 600; color: var(--reader-fg);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.header-chapter { display: block; font-size: 0.7rem; color: var(--reader-fg-muted); }
.header-toc-btn {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; background: none; border: none;
  color: var(--reader-fg); cursor: pointer; flex-shrink: 0;
}

/* ===== READER BODY ===== */
.reader-body { padding: 68px 20px 80px; max-width: 720px; margin: 0 auto; min-height: 100vh; }
.chapter-heading {
  text-align: center; padding: 24px 0 32px;
  border-bottom: 1px solid var(--reader-border); margin-bottom: 32px;
}
.chapter-title {
  font-family: var(--content-font); font-size: 1.3rem; font-weight: 700;
  color: var(--reader-fg); line-height: 1.4; margin-bottom: 8px;
}
.chapter-meta { font-size: 0.75rem; color: var(--reader-fg-muted); }

/* ===== CHAPTER CONTENT ===== */
.chapter-content {
  font-family: var(--content-font); font-size: var(--font-size);
  line-height: var(--line-height); color: var(--reader-fg);
  word-break: break-all; text-align: justify; transition: font-size 0.2s;
}
.chapter-content p { margin-bottom: 0.5em; text-indent: 2em; }

/* ===== PAYWALL ===== */
.chapter-locked { position: relative; }
.content-preview { max-height: 200px; overflow: hidden; }
.paywall-mask {
  position: relative; margin-top: -60px; padding-top: 80px;
  background: linear-gradient(to bottom, transparent 0%, var(--reader-bg) 40%);
}
.paywall-card {
  text-align: center; padding: 40px 24px; background: var(--reader-card-bg);
  border-radius: 12px; border: 1px solid var(--reader-border);
}
.paywall-icon { color: var(--reader-fg-muted); margin-bottom: 16px; }
.paywall-text { font-size: 0.95rem; color: var(--reader-fg-secondary); margin-bottom: 20px; }
.paywall-btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 32px;
  background: var(--reader-accent); color: #fff; border: none; border-radius: 8px;
  font-size: 1rem; font-weight: 600; font-family: var(--ui-font);
  cursor: pointer; transition: opacity 0.2s;
}
.paywall-btn:active { opacity: 0.8; }
.paywall-balance { margin-top: 12px; font-size: 0.8rem; color: var(--reader-fg-muted); }

/* ===== CHAPTER NAVIGATION ===== */
.chapter-nav {
  display: flex; gap: 12px; padding: 32px 0 24px;
  margin-top: 40px; border-top: 1px solid var(--reader-border);
}
.nav-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 12px 8px; font-size: 0.9rem; font-weight: 500;
  font-family: var(--ui-font); color: var(--reader-fg);
  background: var(--reader-card-bg); border: 1px solid var(--reader-border);
  border-radius: 8px; text-decoration: none; cursor: pointer; transition: background 0.2s;
}
.nav-btn:active { opacity: 0.7; }
.nav-btn.disabled { opacity: 0.4; pointer-events: none; }
.nav-catalog {
  flex: 0.8; background: var(--reader-accent-light); color: var(--reader-accent);
  border-color: transparent; font-weight: 600;
}

/* ===== TOOLBAR ===== */
.reader-toolbar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-around;
  padding: 8px 16px; padding-bottom: max(8px, env(safe-area-inset-bottom));
  background: var(--reader-toolbar-bg); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px); border-top: 1px solid var(--reader-border);
  transition: transform 0.3s ease, background 0.3s;
}
.reader-toolbar.hidden { transform: translateY(100%); }
.toolbar-btn {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 4px 12px; background: none; border: none;
  color: var(--reader-fg-secondary); font-size: 0.65rem;
  font-family: var(--ui-font); cursor: pointer;
}
.toolbar-btn svg { color: var(--reader-fg); }

/* ===== SETTINGS PANEL ===== */
.settings-panel {
  position: fixed; inset: 0; z-index: 200;
  pointer-events: none; opacity: 0; transition: opacity 0.3s;
}
.settings-panel.open { pointer-events: auto; opacity: 1; }
.settings-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.3); }
.settings-content {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: var(--reader-bg); border-top: 1px solid var(--reader-border);
  border-radius: 16px 16px 0 0; padding: 24px 20px;
  padding-bottom: max(24px, env(safe-area-inset-bottom));
  transform: translateY(100%); transition: transform 0.3s ease, background 0.3s;
}
.settings-panel.open .settings-content { transform: translateY(0); }
.settings-section { margin-bottom: 24px; }
.settings-section:last-child { margin-bottom: 0; }
.settings-label {
  display: block; font-size: 0.8rem; font-weight: 600;
  color: var(--reader-fg-muted); margin-bottom: 12px;
}
.font-size-group, .theme-group { display: flex; gap: 8px; }
.font-btn {
  flex: 1; padding: 10px; border: 1px solid var(--reader-border); border-radius: 8px;
  background: var(--reader-card-bg); color: var(--reader-fg);
  font-size: 0.9rem; font-family: var(--ui-font); cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.font-btn.active {
  background: var(--reader-accent-light); border-color: var(--reader-accent);
  color: var(--reader-accent); font-weight: 600;
}
.theme-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px; border: 1px solid var(--reader-border); border-radius: 8px;
  background: var(--reader-card-bg); color: var(--reader-fg);
  font-size: 0.85rem; font-family: var(--ui-font); cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.theme-btn.active { border-color: var(--reader-accent); font-weight: 600; }
.theme-dot { width: 16px; height: 16px; border-radius: 50%; border: 1px solid #ccc; }
.theme-day .theme-dot { background: #fff; }
.theme-eye .theme-dot { background: #f5edce; border-color: #c9b96f; }
.theme-night .theme-dot { background: #1a1a2e; border-color: #444; }

/* ===== TOC DRAWER ===== */
.toc-drawer {
  position: fixed; inset: 0; z-index: 300;
  pointer-events: none; opacity: 0; transition: opacity 0.3s;
}
.toc-drawer.open { pointer-events: auto; opacity: 1; }
.toc-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.4); }
.toc-content {
  position: absolute; right: 0; top: 0; bottom: 0;
  width: min(300px, 80vw); background: var(--reader-bg);
  border-left: 1px solid var(--reader-border);
  display: flex; flex-direction: column;
  transform: translateX(100%); transition: transform 0.3s ease, background 0.3s;
}
.toc-drawer.open .toc-content { transform: translateX(0); }
.toc-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px; border-bottom: 1px solid var(--reader-border); flex-shrink: 0;
}
.toc-header h3 { font-size: 1rem; font-weight: 600; color: var(--reader-fg); }
.toc-close {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; background: none; border: none;
  color: var(--reader-fg-secondary); cursor: pointer;
}
.toc-list {
  list-style: none; overflow-y: auto; -webkit-overflow-scrolling: touch;
  flex: 1; padding: 8px 0;
}
.toc-item a {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px; text-decoration: none;
  color: var(--reader-fg-secondary); font-size: 0.85rem; transition: background 0.15s;
}
.toc-item a:active { background: var(--reader-card-bg); }
.toc-item.active a {
  color: var(--reader-accent); font-weight: 600; background: var(--reader-accent-light);
}
.toc-num {
  flex-shrink: 0; font-size: 0.75rem; color: var(--reader-fg-muted); min-width: 48px;
}
.toc-item.active .toc-num { color: var(--reader-accent); }
.toc-name {
  flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.toc-lock { flex-shrink: 0; color: var(--reader-fg-muted); }

/* ===== PAGE MODE ===== */
body.page-mode .reader-body {
  height: calc(100vh - 48px - 56px); overflow: hidden;
  padding-top: 56px; padding-bottom: 68px;
}
body.page-mode .chapter-content { height: 100%; overflow: hidden; column-fill: auto; }

/* ===== PAGE INDICATOR ===== */
.page-indicator {
  display: none; position: fixed; bottom: 68px; left: 50%; transform: translateX(-50%);
  padding: 4px 14px; background: var(--reader-fg); color: var(--reader-bg);
  font-size: 0.7rem; font-family: var(--ui-font); border-radius: 12px;
  opacity: 0; transition: opacity 0.3s; z-index: 90; pointer-events: none;
}
body.page-mode .page-indicator { display: block; }
.page-indicator.visible { opacity: 0.7; }

/* ===== RESPONSIVE ===== */
@media (max-width: 480px) {
  .reader-body { padding: 56px 16px 72px; }
  .chapter-title { font-size: 1.15rem; }
}
@media (min-width: 768px) {
  .reader-body { padding: 68px 40px 80px; }
}