/* BookFriends — dark reader theme (Wuxiaworld-parity) */
:root {
  --bg: #0e0e11;
  --surface: #17171c;
  --surface-2: #1e1e25;
  --border: #2a2a33;
  --text: #d8d8dc;
  --text-strong: #f2f2f5;
  --muted: #8a8a93;
  --accent: #3b82f6;
  --accent-strong: #2563eb;
  --danger: #ef4444;
  --radius: 10px;
}

/* Light and sepia reading themes override the dark defaults above */
html.theme-light {
  --bg: #f4f4f6;
  --surface: #ffffff;
  --surface-2: #ececf0;
  --border: #d7d7de;
  --text: #2c2c31;
  --text-strong: #101014;
  --muted: #6b6b74;
}
html.theme-sepia {
  --bg: #f3e9d2;
  --surface: #ede0c4;
  --surface-2: #e5d5b3;
  --border: #d3bf97;
  --text: #4a3b26;
  --text-strong: #2e2414;
  --muted: #85714f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.main { max-width: 900px; margin: 0 auto; padding: 1rem 1rem 4rem; }

/* ---------- nav ---------- */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.6rem 1rem; background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 30;
}
.nav-brand { color: var(--text-strong); font-weight: 700; font-size: 1.05rem; }
.nav-brand:hover { text-decoration: none; }
.nav-right { display: flex; align-items: center; gap: 0.5rem; }
.nav-user { color: var(--muted); font-size: 0.85rem; }
.inline-form { display: inline; }

/* ---------- buttons & forms ---------- */
.btn {
  display: inline-block; border: 0; border-radius: 999px; cursor: pointer;
  background: var(--accent); color: #fff; padding: 0.5rem 1.1rem;
  font-size: 0.9rem; font-weight: 600;
}
.btn:hover { background: var(--accent-strong); text-decoration: none; }
.btn-small { padding: 0.25rem 0.7rem; font-size: 0.8rem; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: rgba(239, 68, 68, 0.12); }

.form-card {
  max-width: 420px; margin: 3rem auto; padding: 1.5rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
}
.form-card h1 { margin-top: 0; color: var(--text-strong); }
.field { display: block; margin-bottom: 1rem; }
.field span { display: block; margin-bottom: 0.3rem; color: var(--muted); font-size: 0.85rem; }
.field input {
  width: 100%; padding: 0.55rem 0.7rem; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
}
.form-error { color: var(--danger); }
.form-ok { color: #22c55e; }
.or-divider { text-align: center; color: var(--muted); margin: 0.8rem 0; font-size: 0.85rem; }
.google-btn {
  display: block; text-align: center; background: #fff; color: #1f1f1f;
  border: 1px solid var(--border); border-radius: 999px; padding: 0.55rem; font-weight: 600;
}
.google-btn:hover { background: #ececec; text-decoration: none; }
.hint { color: var(--muted); font-size: 0.85rem; }
.empty { color: var(--muted); }
.page-title { color: var(--text-strong); }

/* ---------- shelf ---------- */
.shelf {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 1.2rem;
}
.book-card { display: flex; flex-direction: column; gap: 0.5rem; }
.book-cover {
  width: 100%; aspect-ratio: 2 / 3; object-fit: cover;
  border-radius: 6px; border: 1px solid var(--border); display: block;
}
.book-cover-placeholder {
  display: flex; align-items: center; justify-content: center; text-align: center;
  padding: 0.5rem; background: var(--surface-2); color: var(--muted); font-size: 0.85rem;
}
.book-title { color: var(--text-strong); font-weight: 600; }
.book-author { color: var(--muted); font-size: 0.85rem; }
.book-owner-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; margin-top: 0.3rem; }
.download-link { font-size: 0.78rem; color: var(--muted); }
.download-link:hover { color: var(--accent); }
.pill { border-radius: 999px; padding: 0.1rem 0.55rem; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; }
.pill-public { background: rgba(59, 130, 246, 0.15); color: var(--accent); }
.pill-private { background: var(--surface-2); color: var(--muted); }

/* ---------- reader ---------- */
.reader-titlebar {
  display: flex; align-items: center; gap: 0.7rem;
  padding: 0.6rem 0; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem;
}
.titlebar-back { font-size: 1.6rem; color: var(--muted); padding: 0 0.4rem; }
.titlebar-cover { height: 44px; border-radius: 4px; }
.titlebar-text { flex: 1; min-width: 0; }
.titlebar-book { color: var(--muted); font-size: 0.78rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.titlebar-chapter { color: var(--text-strong); font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.titlebar-nav { display: flex; gap: 0.3rem; }
.chapter-arrow {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 2.1rem; height: 2.1rem; padding: 0 0.5rem; border-radius: 999px;
  background: var(--surface-2); color: var(--text); font-size: 1rem;
}
.chapter-arrow:hover { background: var(--accent); color: #fff; text-decoration: none; }
.chapter-arrow.disabled { opacity: 0.35; pointer-events: none; }

.chapter-content { font-size: 18px; }
.chapter-content h1, .chapter-content h2, .chapter-content h3 { color: var(--text-strong); }
.chapter-content img { max-width: 100%; height: auto; }
.chapter-content [data-p] { position: relative; padding-right: 2.6rem; }
/* EPUB position-marker anchors (no href) must read as normal text, including
   paragraphs a browser re-wraps when the source had an unclosed <a> */
.chapter-content a:not([href]) { color: inherit; cursor: inherit; }
.chapter-content a:not([href]):hover { text-decoration: none; }
.chapter-content .blockquot { margin-left: 1.5rem; color: var(--muted); }

.para-badge {
  position: absolute; right: 0; top: 0.15rem;
  min-width: 1.5rem; height: 1.5rem; padding: 0 0.35rem;
  border-radius: 999px; border: 0; cursor: pointer;
  background: var(--surface-2); color: var(--muted); font-size: 0.72rem; font-weight: 700;
}
.para-badge.has-comments { background: rgba(59, 130, 246, 0.2); color: var(--accent); }
.para-badge:hover { background: var(--accent); color: #fff; }

/* ---------- end of chapter ---------- */
.chapter-end { margin-top: 2.5rem; }
.next-chapter-btn {
  display: block; width: fit-content; margin: 0 auto 2.5rem;
  background: var(--accent); color: #fff; font-weight: 700; letter-spacing: 0.04em;
  padding: 0.75rem 2.6rem; border-radius: 999px; font-size: 0.95rem;
}
.next-chapter-btn:hover { background: var(--accent-strong); text-decoration: none; }

.comments-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.comments-header h2 { color: var(--text-strong); font-size: 1.15rem; }
.sort-select {
  background: var(--surface-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.3rem 0.5rem; font-size: 0.85rem;
}
.toc-select { max-width: 40vw; }

/* ---------- comments ---------- */
.comment-form { display: flex; flex-direction: column; gap: 0.5rem; margin: 0.8rem 0 1.2rem; }
.comment-form textarea {
  width: 100%; min-height: 84px; resize: vertical; padding: 0.6rem 0.7rem;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius); font: inherit;
}
.comment-form .btn { align-self: flex-start; }
.login-prompt { color: var(--muted); background: var(--surface); padding: 0.8rem 1rem; border-radius: var(--radius); }

.comment-list { display: flex; flex-direction: column; gap: 1rem; }
.comment { display: flex; gap: 0.7rem; }
.comment-avatar {
  flex: 0 0 auto; width: 40px; height: 40px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-2); color: var(--muted); font-weight: 700;
}
.comment-main { flex: 1; min-width: 0; }
.comment-head { display: flex; align-items: baseline; gap: 0.6rem; }
.comment-user { color: var(--text-strong); font-weight: 600; font-size: 0.9rem; }
.comment-time { color: var(--muted); font-size: 0.75rem; }
.comment-body {
  background: var(--surface); border-radius: 8px; padding: 0.55rem 0.8rem; margin: 0.3rem 0;
  white-space: pre-wrap; word-wrap: break-word;
}
.comment-actions { display: flex; align-items: center; gap: 0.7rem; }
.vote-btn {
  background: transparent; border: 0; cursor: pointer; color: var(--muted); font-size: 0.82rem; padding: 0.15rem 0.3rem;
}
.vote-btn.active { color: var(--accent); }
.vote-btn:disabled { cursor: default; opacity: 0.6; }
.link-btn { background: transparent; border: 0; cursor: pointer; color: var(--muted); font-size: 0.82rem; padding: 0.15rem 0.3rem; }
.link-btn:hover { color: var(--text); }
.link-btn.danger:hover { color: var(--danger); }
.view-replies { color: var(--accent); }
.comment-replies { margin-top: 0.6rem; padding-left: 1rem; border-left: 2px solid var(--border); display: flex; flex-direction: column; gap: 0.8rem; }

/* ---------- slide-out panel ---------- */
.panel-backdrop { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.45); z-index: 40; }
.comment-panel {
  position: fixed; top: 0; right: 0; bottom: 0; width: 420px; max-width: 100vw;
  background: var(--surface); border-left: 1px solid var(--border); z-index: 50;
  padding: 1rem; overflow-y: auto;
}
.panel-header { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 0.6rem; }
.panel-header #panel-title { flex: 1; color: var(--text-strong); font-weight: 700; }
.panel-close {
  background: transparent; border: 0; color: var(--muted); font-size: 1.5rem; cursor: pointer; line-height: 1;
}
.panel-close:hover { color: var(--text-strong); }

/* ---------- bottom bar ---------- */
.reader-bottombar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  display: flex; align-items: center; justify-content: center; gap: 0.8rem;
  padding: 0.5rem 1rem; background: var(--surface); border-top: 1px solid var(--border);
}
.bar-btn {
  background: transparent; border: 0; cursor: pointer; padding: 0.2rem 0.5rem;
  color: var(--muted); font-weight: 700; font-size: 1rem;
}
.bar-btn.active, .bar-btn.open { color: var(--accent); }
.bar-btn:hover { color: var(--accent-strong); }

/* ---------- font options panel (tT) ---------- */
.font-panel {
  position: fixed; bottom: 3.6rem; left: 50%; transform: translateX(-50%);
  width: 340px; max-width: calc(100vw - 1.6rem); z-index: 60;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex; flex-direction: column; gap: 0.8rem;
}
.font-panel[hidden] { display: none; }
.font-panel-label { color: var(--muted); font-size: 0.85rem; }
.font-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.font-choice {
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px;
  color: var(--text); padding: 0.45rem 0.6rem; cursor: pointer; font-size: 0.85rem;
}
.font-choice.active { border-color: var(--accent); color: var(--accent); }
.font-choice[data-font="opensans"] { font-family: "Open Sans", sans-serif; }
.font-choice[data-font="sourceserif"] { font-family: "Source Serif 4", Georgia, serif; }
.font-choice[data-font="inter"] { font-family: "Inter", sans-serif; }
.font-choice[data-font="merriweather"] { font-family: "Merriweather", Georgia, serif; }
.font-choice[data-font="lato"] { font-family: "Lato", sans-serif; }
.font-choice[data-font="montserrat"] { font-family: "Montserrat", sans-serif; }
.font-panel-row { display: flex; align-items: center; justify-content: space-between; }
.stepper { display: flex; align-items: center; gap: 0.6rem; }
.stepper-btn {
  width: 28px; height: 28px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--surface-2); color: var(--text-strong); font-size: 1rem; line-height: 1;
}
.stepper-btn:hover { background: var(--border); }
.stepper-value { min-width: 2ch; text-align: center; color: var(--text-strong); }
.contrast-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.contrast-btn {
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px;
  color: var(--text); padding: 0.35rem 0.6rem; cursor: pointer; font-size: 0.9rem;
}
.contrast-btn.active { border-color: var(--accent); color: var(--accent); }
.contrast-btn.contrast-a { text-decoration: underline; font-weight: 700; }
.font-reset {
  background: transparent; border: 1px solid var(--accent); border-radius: 999px;
  color: var(--accent); padding: 0.5rem; cursor: pointer; font-weight: 700; letter-spacing: 0.04em;
}
.font-reset:hover { background: rgba(59, 130, 246, 0.12); }

.theme-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.5rem; }
.theme-btn {
  border-radius: 999px; border: 1px solid var(--border); padding: 0.4rem 0.6rem;
  cursor: pointer; font-size: 0.85rem;
}
.theme-btn.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.theme-btn[data-theme="dark"] { background: #17171c; color: #d8d8dc; }
.theme-btn[data-theme="light"] { background: #ffffff; color: #2c2c31; }
.theme-btn[data-theme="sepia"] { background: #f3e9d2; color: #4a3b26; }

/* settings effects */
body.badges-off .para-badge { display: none; }
body.badges-off .chapter-content [data-p] { padding-right: 0; }
body.high-contrast .chapter-content { color: #fff; }
html.theme-light body.high-contrast .chapter-content,
html.theme-sepia body.high-contrast .chapter-content { color: #000; }

/* ---------- mobile ---------- */
@media (max-width: 640px) {
  .comment-panel { width: 100vw; border-left: 0; }
  body.panel-open { overflow: hidden; }
  .chapter-content [data-p] { padding-right: 2.2rem; }
  .nav-user { max-width: 90px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: inline-block; }
  .toc-select { max-width: 30vw; }
}