/* ──────────────────────────────────────────────
   Reader — premium palette
   Library surface: warm ivory (physical library feel)
   Accents:        deep navy + champagne gold
   Reading themes: light / sepia / dark (per-book)
   ────────────────────────────────────────────── */

:root {
  /* Ivory library palette */
  --paper:       #f6f1e6;
  --paper-2:     #efe7d4;
  --paper-warm:  #faf6ec;
  --ink:         #1b2a4a;        /* deep navy ink */
  --ink-2:       #3b4a6b;
  --ink-soft:    #5a6784;
  --ink-dim:     #8992aa;
  --line:        rgba(27, 42, 74, 0.10);
  --line-strong: rgba(27, 42, 74, 0.18);

  /* Navy & gold */
  --navy:        #0f2150;
  --navy-dk:     #0b1b3a;
  --navy-deep:   #060e22;
  --gold:        #c8a04e;
  --gold-2:      #a98537;
  --gold-soft:   rgba(200, 160, 78, 0.12);
  --gold-glow:   rgba(200, 160, 78, 0.28);
  --gold-ink:    #5a3d0f;

  /* Dark surface (reader dark mode) */
  --dk-bg:       #0e1a2e;
  --dk-surface:  #14233f;
  --dk-line:     rgba(255,255,255,0.08);
  --dk-ink:      #e8ecf4;
  --dk-ink-dim:  #93a0bc;

  --radius:      16px;
  --radius-sm:   10px;
  --shadow-1:    0 1px 2px rgba(27,42,74,0.06), 0 2px 8px rgba(27,42,74,0.05);
  --shadow-2:    0 2px 6px rgba(27,42,74,0.08), 0 12px 28px -8px rgba(27,42,74,0.15);
  --shadow-3:    0 6px 16px rgba(27,42,74,0.10), 0 30px 60px -16px rgba(27,42,74,0.20);
  --safe-top:    env(safe-area-inset-top);
  --safe-bot:    env(safe-area-inset-bottom);

  --font-display: "Fraunces", "Iowan Old Style", "Hoefler Text", Georgia, serif;
  --font-sans:    "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  --font-serif:   "Fraunces", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-mono:    ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font: 16px/1.55 var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  overflow: hidden;
  overscroll-behavior: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
input, select { font: inherit; color: inherit; }
.hidden { display: none !important; }

/* Views */
.view { position: fixed; inset: 0; display: none; flex-direction: column; }
.view.active { display: flex; }

/* ── Library surface — warm paper + subtle grain ── */
#library {
  background:
    radial-gradient(1400px 900px at 8% -10%, rgba(200,160,78,0.08) 0%, transparent 55%),
    radial-gradient(1200px 700px at 92% 100%, rgba(15,33,80,0.05) 0%, transparent 60%),
    linear-gradient(180deg, var(--paper-warm) 0%, var(--paper) 100%);
  overflow: hidden;
}

/* Very faint paper texture */
#library::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='1' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.12  0 0 0 0 0.16  0 0 0 0 0.29  0 0 0 0.025 0'/></filter><rect width='140' height='140' filter='url(%23n)'/></svg>");
  opacity: 0.7;
  pointer-events: none;
  z-index: 0;
}

#library > * { position: relative; z-index: 1; }

/* ── Top bar ── */
.top-bar {
  display: flex; justify-content: space-between; align-items: center;
  padding: calc(14px + var(--safe-top)) 20px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(250,246,236,0.72);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.2px;
  margin: 0;
  color: var(--navy);
}
.logo { width: 26px; height: 26px; color: var(--gold); flex-shrink: 0; }
.top-actions { display: flex; align-items: center; gap: 8px; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 6px;
  background: linear-gradient(180deg, #e2c37d 0%, var(--gold) 55%, var(--gold-2) 100%);
  color: #2b1d05; font-weight: 600;
  padding: 10px 16px; border-radius: 999px;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.5),
    inset 0 -1px 0 rgba(0,0,0,0.08),
    0 1px 2px rgba(90,61,15,0.16),
    0 6px 18px -6px rgba(200,160,78,0.5);
  transition: transform .12s ease, box-shadow .15s ease;
  letter-spacing: 0.1px;
  font-size: 14px;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.5),
    inset 0 -1px 0 rgba(0,0,0,0.08),
    0 2px 4px rgba(90,61,15,0.18),
    0 12px 26px -6px rgba(200,160,78,0.55);
}
.btn-primary:active { transform: translateY(0); }
.btn-primary svg { flex-shrink: 0; opacity: 0.85; }

.btn-icon {
  width: 40px; height: 40px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink-2);
  transition: background .15s ease, color .15s ease;
}
.btn-icon:hover { background: rgba(27,42,74,0.05); color: var(--navy); }
.btn-icon:active { background: rgba(27,42,74,0.10); }

/* ── Hero ── */
.library-hero {
  padding: 22px 24px 4px;
  max-width: 1280px; margin: 0 auto;
}
.hero-inner { max-width: 760px; }
.hero-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(30px, 5.2vw, 46px);
  line-height: 1.05;
  letter-spacing: -0.5px;
  color: var(--navy);
  margin: 0 0 8px;
  font-variation-settings: "opsz" 96;
}
.hero-title em {
  font-style: italic;
  font-weight: 500;
  background: linear-gradient(135deg, var(--gold-2) 0%, #dfbc6a 50%, var(--gold-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-sub {
  color: var(--ink-soft);
  font-size: 15px;
  margin: 0;
  max-width: 520px;
}

/* ── Drop zone ── */
.drop-zone {
  margin: 18px 24px 12px;
  max-width: 1280px; margin-left: auto; margin-right: auto;
  padding: 18px 18px;
  border: 1.5px dashed rgba(200,160,78,0.5);
  border-radius: var(--radius);
  text-align: center;
  color: var(--ink-soft);
  background: linear-gradient(180deg, rgba(255,255,255,0.5) 0%, rgba(255,255,255,0.15) 100%);
  display: flex; align-items: center; justify-content: center; gap: 14px;
  flex-wrap: wrap;
  transition: border-color .2s ease, background .2s ease, color .2s ease;
}
.drop-zone .drop-icon { color: var(--gold-2); opacity: 0.75; }
.drop-zone p { margin: 0; font-size: 14px; }
.drop-zone .subtle { font-size: 13px; color: var(--ink-dim); }
.drop-zone.hover {
  border-color: var(--gold-2);
  background: linear-gradient(180deg, rgba(200,160,78,0.10), rgba(200,160,78,0.04));
  color: var(--ink);
}

/* ── Book grid ── */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
  gap: 22px;
  padding: 18px 24px 110px;
  max-width: 1280px; width: 100%;
  margin: 0 auto;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  flex: 1;
}

.book-card {
  position: relative;
  cursor: pointer;
  display: flex; flex-direction: column;
  transition: transform .18s ease;
}
.book-card:hover { transform: translateY(-3px); }

.book-cover {
  position: relative;
  aspect-ratio: 2/3;
  border-radius: 6px 10px 10px 6px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dk) 70%, var(--navy-deep) 100%);
  display: flex; align-items: center; justify-content: center;
  box-shadow:
    inset 1px 0 0 rgba(0,0,0,0.25),
    inset -1px 0 0 rgba(255,255,255,0.06),
    0 1px 2px rgba(27,42,74,0.10),
    0 18px 28px -12px rgba(27,42,74,0.30),
    0 2px 6px rgba(27,42,74,0.10);
  color: var(--gold);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 28px;
  text-align: center;
  padding: 14px;
  transition: box-shadow .2s ease;
}
.book-cover::before {
  content: '';
  position: absolute; top: 0; bottom: 0; left: 6px; width: 1px;
  background: linear-gradient(180deg, rgba(255,255,255,0.15), rgba(255,255,255,0.02));
  pointer-events: none;
}
.book-cover::after {
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.08) 0%, transparent 50%),
    radial-gradient(120% 60% at 50% 0%, rgba(200,160,78,0.10), transparent 60%);
  pointer-events: none;
}
.book-card:hover .book-cover {
  box-shadow:
    inset 1px 0 0 rgba(0,0,0,0.25),
    inset -1px 0 0 rgba(255,255,255,0.06),
    0 2px 4px rgba(27,42,74,0.14),
    0 26px 36px -10px rgba(27,42,74,0.35),
    0 0 0 1px rgba(200,160,78,0.28);
}
.book-cover img {
  width: 100%; height: 100%; object-fit: cover;
  display: block;
}
.book-cover span {
  position: relative; z-index: 1;
  text-shadow: 0 1px 2px rgba(0,0,0,0.4);
}

.book-meta { padding: 12px 4px 0; }
.book-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.3;
  margin: 0 0 3px;
  color: var(--navy);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  letter-spacing: -0.1px;
}
.book-author {
  font-size: 12px;
  color: var(--ink-soft);
  margin: 0 0 8px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  font-style: italic;
}
.book-progress {
  height: 3px; background: rgba(27,42,74,0.08); border-radius: 4px; overflow: hidden;
}
.book-progress > span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--gold-2), var(--gold));
  width: 0%;
  transition: width .4s ease;
}
.book-card .delete {
  position: absolute; top: 8px; right: 8px;
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(15,33,80,0.85); color: #fff;
  opacity: 0; transition: opacity .15s, transform .15s;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
  transform: scale(0.9);
}
.book-card:hover .delete,
.book-card:focus-within .delete { opacity: 1; transform: scale(1); }

.empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 50px 24px 80px;
  color: var(--ink-soft);
}
.empty svg { color: var(--gold-2); opacity: 0.7; display: block; margin: 0 auto 16px; }
.empty p { margin: 0; }
.empty .hint { font-size: 13px; color: var(--ink-dim); margin-top: 6px; }

/* ── Reader ── */
#reader { background: #0e1a2e; color: #e8ecf4; }

.reader-bar {
  display: flex; align-items: center; gap: 6px;
  background: rgba(14,26,46,0.85);
  backdrop-filter: saturate(150%) blur(12px);
  -webkit-backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid var(--dk-line);
  padding: calc(8px + var(--safe-top)) 12px 8px;
}
.reader-bar.bottom {
  border-bottom: 0; border-top: 1px solid var(--dk-line);
  padding: 8px 14px calc(8px + var(--safe-bot));
  gap: 12px;
}
.reader-bar .btn-icon { color: var(--dk-ink); }
.reader-bar .btn-icon:hover { background: rgba(255,255,255,0.06); }
.reader-title {
  flex: 1; text-align: center;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 15px;
  color: var(--dk-ink);
  letter-spacing: 0.1px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  padding: 0 6px;
}
.reader-actions { display: flex; gap: 2px; }

.reader-content {
  position: relative; flex: 1; overflow: hidden;
  background: #0e1a2e;
}
.reader-area {
  position: absolute; inset: 0;
  display: none;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}
.reader-area.active { display: block; }

/* "Now reading" marker — a CSS-drawn triangle on the right margin that
   tracks roughly where the audio is on the page. Lets you look away,
   then find your place again. Position is updated per-chunk by app.js.
   CSS borders rather than an emoji so it renders the same on every
   device (Brave on stripped Android e-ink doesn't have a reliable
   emoji font). The pill shape gives contrast against the dark PDF
   gutter as well as against a light page. */
.reading-marker {
  position: absolute;
  right: 4px;
  top: 0;
  width: 14px;
  height: 22px;
  margin-top: -11px;
  z-index: 10;
  pointer-events: none;
  transition: top 0.4s ease;
  background: #ffd166;
  border-radius: 4px 0 0 4px;
  box-shadow: -1px 0 0 rgba(0,0,0,0.25), 0 1px 3px rgba(0,0,0,0.35);
}
.reading-marker::before {
  /* Left-pointing triangle so the eye reads it as "this side, the text" */
  content: '';
  position: absolute;
  left: -8px;
  top: 50%;
  margin-top: -6px;
  border: 6px solid transparent;
  border-right-color: #ffd166;
  filter: drop-shadow(-1px 1px 1px rgba(0,0,0,0.25));
}
.reading-marker.hidden { display: none; }

/* Voice-engine quick toggle in the top bar. Three states:
   E = Echo (Kokoro on Mac mini, needs internet, gold)
   M = My voice (F5-TTS clone, needs internet, green)
   A = Apple device voice (offline, blue)
   Tap to cycle E → M → A → E. */
.voice-toggle { font-weight: 700; font-size: 13px; }
.voice-toggle.is-echo  { color: #d4a017; }
.voice-toggle.is-clone { color: #4caf50; }
.voice-toggle.is-apple { color: #6ec1ff; }

/* Voices section in settings drawer */
.voices-list { display: flex; flex-direction: column; gap: 6px; margin: 8px 0; }
.voice-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 10px;
  border: 1px solid var(--border, rgba(212,175,55,0.15));
  border-radius: 8px;
  font-size: 13px;
}
.voice-row.active { border-color: #4caf50; box-shadow: 0 0 0 2px rgba(76,175,80,0.18); }
.voice-row .voice-name { font-weight: 600; }
.voice-row .voice-meta { font-size: 11px; opacity: 0.6; margin-top: 2px; }
.voice-row .voice-actions { display: flex; gap: 6px; flex-shrink: 0; }
.voice-row .btn-small { padding: 4px 10px; font-size: 12px; }
.voice-row .btn-danger { color: #d44; border-color: rgba(220,68,68,0.4); }

/* Recording dialog */
.record-dialog-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 200;
  display: flex; align-items: center; justify-content: center;
}
.record-dialog {
  background: var(--bg, #1a2438);
  color: var(--fg, #e8ecf4);
  border-radius: 14px;
  padding: 22px;
  max-width: 420px;
  width: 92%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.record-dialog h3 { margin: 0 0 12px; font-size: 18px; }
.record-script {
  background: rgba(212,175,55,0.08);
  border-left: 3px solid #d4a017;
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.5;
  margin: 12px 0;
  max-height: 180px;
  overflow-y: auto;
}
.record-controls { display: flex; gap: 10px; align-items: center; margin: 14px 0; }
.record-timer { font-variant-numeric: tabular-nums; font-size: 16px; font-weight: 600; }
.record-name-input {
  width: 100%; padding: 8px 10px; font-size: 14px;
  border: 1px solid rgba(212,175,55,0.3); border-radius: 6px;
  background: rgba(255,255,255,0.05); color: inherit;
  margin-top: 8px;
}
.record-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; }
.btn-primary {
  padding: 8px 16px; font-size: 14px; font-weight: 600;
  border: 1px solid #d4a017; border-radius: 6px;
  background: #d4a017; color: #1a1a1a; cursor: pointer;
}
.btn-secondary {
  padding: 8px 16px; font-size: 14px;
  border: 1px solid var(--border-strong, rgba(212,175,55,0.3)); border-radius: 6px;
  background: transparent; color: inherit; cursor: pointer;
}
.btn-record {
  padding: 8px 16px; font-size: 14px; font-weight: 600;
  border: 1px solid #d44; border-radius: 999px;
  background: rgba(220,68,68,0.15); color: #ff8a8a; cursor: pointer;
}
.btn-record.recording { background: #d44; color: #fff; animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.7; } }

/* Voice-picker row with the Test button beside the dropdown. */
.voice-picker-row { display: flex; gap: 8px; align-items: center; }
.voice-picker-row #voice-select { flex: 1; min-width: 0; }
.btn-small {
  padding: 6px 12px;
  border: 1px solid var(--border-strong, rgba(212,175,55,0.30));
  border-radius: 8px;
  background: rgba(212,175,55,0.08);
  color: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.btn-small:active { transform: scale(0.97); }
.voice-active-hint { margin-top: 4px; font-size: 11px; opacity: 0.75; }
#reader.theme-dark .reading-marker { background: #ffd166; }
#reader.theme-dark .reading-marker::before { border-right-color: #ffd166; }
#reader.theme-light .reading-marker { background: #d4a017; }
#reader.theme-light .reading-marker::before { border-right-color: #d4a017; }
#reader.theme-sepia .reading-marker { background: #b8860b; }
#reader.theme-sepia .reading-marker::before { border-right-color: #b8860b; }

#pdf-area { display: none; text-align: center; background: #1c1c1c; }
#pdf-area.active { display: flex; align-items: flex-start; justify-content: center; padding: 10px; }
#pdf-canvas { max-width: 100%; height: auto; box-shadow: 0 10px 40px rgba(0,0,0,0.45); border-radius: 2px; }
#txt-body {
  max-width: 680px; margin: 0 auto; padding: 36px 28px 80px;
  white-space: pre-wrap;
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.65;
}

.progress-wrap { flex: 1; display: flex; align-items: center; gap: 10px; }
#progress {
  flex: 1;
  -webkit-appearance: none; appearance: none;
  height: 4px; background: rgba(255,255,255,0.12); border-radius: 999px; outline: none;
}
#progress::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--gold); border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.4);
  cursor: pointer;
}
#progress::-moz-range-thumb {
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--gold); border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.4);
  cursor: pointer;
}
.progress-label {
  font-size: 12px; color: var(--dk-ink-dim);
  width: 44px; text-align: right;
  font-variant-numeric: tabular-nums;
}

.loading {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: var(--dk-ink-dim); z-index: 2;
  background: rgba(14,26,46,0.85);
  font-family: var(--font-display); font-style: italic;
}

/* Reader themes — whole surface adapts (bars + content) */
#reader.theme-light { background: #f5efe0; color: #1b1b1b; }
#reader.theme-light .reader-bar {
  background: rgba(245,239,224,0.85);
  border-color: rgba(27,42,74,0.10);
}
#reader.theme-light .reader-bar .btn-icon { color: #3b4a6b; }
#reader.theme-light .reader-bar .btn-icon:hover { background: rgba(27,42,74,0.06); }
#reader.theme-light .reader-title { color: #1b1b1b; }
#reader.theme-light .progress-label { color: #5a6784; }
#reader.theme-light #progress { background: rgba(27,42,74,0.12); }
#reader.theme-light .loading { background: rgba(245,239,224,0.7); color: #5a6784; }
#reader.theme-light #reader-content,
#reader.theme-light .reader-area,
#reader.theme-light #pdf-area { background: #f5efe0; }
#reader.theme-light #txt-body { color: #1b1b1b; }

#reader.theme-sepia { background: #f0e4ca; color: #3b2a1a; }
#reader.theme-sepia .reader-bar {
  background: rgba(240,228,202,0.85);
  border-color: rgba(90,61,15,0.14);
}
#reader.theme-sepia .reader-bar .btn-icon { color: #5a3d0f; }
#reader.theme-sepia .reader-bar .btn-icon:hover { background: rgba(90,61,15,0.08); }
#reader.theme-sepia .reader-title { color: #3b2a1a; }
#reader.theme-sepia .progress-label { color: #6b4e20; }
#reader.theme-sepia #progress { background: rgba(90,61,15,0.15); }
#reader.theme-sepia .loading { background: rgba(240,228,202,0.7); color: #6b4e20; }
#reader.theme-sepia #reader-content,
#reader.theme-sepia .reader-area,
#reader.theme-sepia #pdf-area { background: #f0e4ca; }
#reader.theme-sepia #txt-body { color: #3b2a1a; }

#reader.theme-dark { background: #0f1a2c; color: #e8ecf4; }
#reader.theme-dark #reader-content,
#reader.theme-dark .reader-area,
#reader.theme-dark #pdf-area { background: #0f1a2c; }
#reader.theme-dark #txt-body { color: #e8ecf4; }

/* TTS active — swap play icon for stop square so the button's role is obvious */
.tts-active #tts-btn,
#tts-btn.is-playing { background: rgba(200,160,78,0.22); color: var(--gold); }
#tts-btn .tts-icon-stop { display: none; }
#tts-btn.is-playing .tts-icon-play { display: none; }
#tts-btn.is-playing .tts-icon-stop { display: inline; }

/* Echo voice toggle row in settings */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.toggle-row > span:first-child { flex: 1; }
.toggle-row .hint.inline {
  display: block;
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 2px;
}
.toggle-row input[type="checkbox"] {
  width: 44px; height: 26px;
  -webkit-appearance: none; appearance: none;
  background: rgba(0,0,0,0.18);
  border-radius: 999px;
  position: relative;
  cursor: pointer;
  transition: background 0.18s ease;
  flex-shrink: 0;
}
.toggle-row input[type="checkbox"]::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 20px; height: 20px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
  transition: transform 0.18s ease;
}
.toggle-row input[type="checkbox"]:checked { background: var(--gold, #c8a04e); }
.toggle-row input[type="checkbox"]:checked::after { transform: translateX(18px); }
.device-voice-label {
  display: block;
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--ink-soft);
  font-weight: 500 !important;
}

/* ── Drawers ── */
.drawer {
  position: fixed; top: 0; bottom: 0; left: 0;
  width: min(360px, 92vw);
  background: var(--paper-warm);
  color: var(--ink);
  border-right: 1px solid var(--line);
  transform: translateX(-105%);
  transition: transform .25s cubic-bezier(.2,.8,.2,1);
  z-index: 50;
  display: flex; flex-direction: column;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bot);
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}
.drawer.right {
  left: auto; right: 0;
  border-right: 0; border-left: 1px solid var(--line);
  transform: translateX(105%);
}
.drawer.open { transform: translateX(0); }

.drawer-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 16px; border-bottom: 1px solid var(--line);
}
.drawer-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  margin: 0;
  color: var(--navy);
  letter-spacing: -0.2px;
}
.drawer-tabs { display: flex; padding: 10px 12px; gap: 6px; border-bottom: 1px solid var(--line); }
.drawer-tabs .tab {
  padding: 7px 14px; border-radius: 999px;
  color: var(--ink-soft); font-size: 13px; font-weight: 500;
  transition: background .15s, color .15s;
}
.drawer-tabs .tab:hover { background: rgba(27,42,74,0.04); color: var(--ink); }
.drawer-tabs .tab.active {
  background: var(--navy);
  color: var(--paper-warm);
}
.drawer-list { overflow: auto; flex: 1; padding: 4px 0; }
.drawer-list .item {
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  display: flex; justify-content: space-between; gap: 10px;
  align-items: center;
  transition: background .12s;
}
.drawer-list .item:hover { background: rgba(200,160,78,0.08); }
.drawer-list .item .label {
  flex: 1; font-size: 14px; color: var(--ink);
  font-family: var(--font-display); font-weight: 500;
}
.drawer-list .item .sub { font-size: 12px; color: var(--ink-soft); margin-top: 2px; }
.drawer-list .item .kill {
  color: var(--ink-soft); padding: 4px 8px; font-size: 14px;
  border-radius: 8px;
}
.drawer-list .item .kill:hover { background: rgba(27,42,74,0.08); color: var(--navy); }
.drawer-list .empty-line {
  padding: 28px 20px; color: var(--ink-soft);
  font-size: 14px; text-align: center;
  font-style: italic;
}
.drawer-list .item.depth-1 { padding-left: 36px; }
.drawer-list .item.depth-2 { padding-left: 52px; }
.drawer-list .item.depth-3 { padding-left: 68px; }
.drawer-list .item.depth-1 .label,
.drawer-list .item.depth-2 .label,
.drawer-list .item.depth-3 .label { font-weight: 400; font-family: var(--font-sans); font-size: 13.5px; }

/* Settings groups */
.settings-group { padding: 16px 18px; border-bottom: 1px solid var(--line); }
.settings-group label {
  display: block; font-size: 12px;
  font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase;
  color: var(--ink-soft); margin-bottom: 10px;
}
.settings-group .hint { font-size: 12.5px; color: var(--ink-soft); margin-top: 8px; line-height: 1.5; }
.settings-group select {
  width: 100%; padding: 10px 12px; border-radius: 10px;
  background: #fff;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%235a6784'><path d='M7 10l5 5 5-5z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 36px;
}
.settings-group input[type="range"] {
  width: 100%;
  -webkit-appearance: none; appearance: none;
  background: transparent;
  padding: 10px 0;
}
.settings-group input[type="range"]::-webkit-slider-runnable-track {
  height: 4px; background: var(--line-strong); border-radius: 999px;
}
.settings-group input[type="range"]::-moz-range-track {
  height: 4px; background: var(--line-strong); border-radius: 999px;
}
.settings-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--gold); border: 2px solid #fff;
  margin-top: -7px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  cursor: pointer;
}
.settings-group input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--gold); border: 2px solid #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  cursor: pointer;
}
.seg {
  display: flex; gap: 0;
  background: rgba(27,42,74,0.05);
  border: 1px solid var(--line);
  border-radius: 10px; padding: 3px; width: 100%;
}
.seg.wrap { flex-wrap: wrap; }
.seg button {
  flex: 1; padding: 9px 10px; border-radius: 8px;
  color: var(--ink-soft); font-size: 13px; font-weight: 500;
  transition: background .12s, color .12s, box-shadow .12s;
  white-space: nowrap;
}
.seg button:hover { color: var(--ink); }
.seg button.active {
  background: #fff;
  color: var(--navy);
  box-shadow: 0 1px 2px rgba(27,42,74,0.08), 0 1px 1px rgba(27,42,74,0.06);
}

/* Scrim + toast */
.scrim {
  position: fixed; inset: 0;
  background: rgba(11,27,58,0.45);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 40;
}

.toast {
  position: fixed; left: 50%; bottom: calc(28px + var(--safe-bot));
  transform: translateX(-50%);
  background: var(--navy);
  color: var(--paper-warm);
  padding: 12px 20px; border-radius: 999px;
  box-shadow: 0 12px 32px rgba(11,27,58,0.35);
  font-size: 14px; z-index: 100;
  max-width: 90vw;
  letter-spacing: 0.1px;
}

/* Breakpoints */
@media (max-width: 720px) {
  .library-hero { padding: 14px 20px 0; }
  .hero-title { font-size: clamp(26px, 7vw, 34px); }
  .hero-sub { font-size: 14px; }
  .drop-zone { margin: 14px 20px 8px; padding: 14px; }
  .book-grid { padding: 14px 20px 110px; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(128px, 1fr)); }
  .book-cover { font-size: 22px; }
  .brand h1 { font-size: 20px; }
  .reader-title { font-size: 14px; }
}

@media (max-width: 440px) {
  .top-bar { padding: calc(12px + var(--safe-top)) 14px 12px; }
  .btn-primary { padding: 9px 12px; font-size: 13px; gap: 4px; }
  .library-hero { padding: 12px 16px 0; }
  .drop-zone { margin: 12px 16px 8px; font-size: 13px; padding: 12px; gap: 8px; }
  .drop-zone .drop-icon { display: none; }
  .book-grid { padding: 12px 16px 110px; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
}
@media (max-width: 380px) {
  /* On very narrow phones, show only the + icon */
  .btn-primary .btn-label { display: none; }
  .btn-primary { padding: 9px 11px; }
  .brand h1 { font-size: 18px; }
}