/* ==========================================================================
   Aethelgaard: The Weaver's Last Thread — CYOA Engine Stylesheet
   Skeuomorphic Grimoire / Tome with Dual Themes & Responsive Folio Layout
   ========================================================================== */

:root {
  /* Common Palette */
  --font-display: 'Cinzel', serif;
  --font-story: 'IM Fell English', Georgia, serif;
  --font-rune: 'MedievalSharp', cursive;
  --font-mono: 'Share Tech Mono', monospace;

  --aurora-teal: #2dd4bf;
  --aurora-purple: #c084fc;
  --aurora-amber: #f59e0b;
  --aurora-red: #ef4444;
  --aurora-blue: #38bdf8;
  --gold-accent: #d4af37;
  --gold-glow: rgba(212, 175, 55, 0.4);

  /* Transition Speeds */
  --speed-turn: 0.5s;
  --ease-page: cubic-bezier(0.25, 1, 0.5, 1);
}

/* ── THEME 1: DARK GRIMOIRE (Default) ─────────────────────────────────── */
body.theme-dark-grimoire {
  --bg-table: #07080c;
  --bg-page: #13151f;
  --bg-page-inner: #161824;
  --leather-binding: #1c1511;
  --leather-border: #38281e;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --border-page: rgba(212, 175, 55, 0.25);
  --border-card: rgba(255, 255, 255, 0.08);
  --card-bg: rgba(20, 24, 38, 0.65);
  --card-hover: rgba(30, 36, 58, 0.85);
  --card-locked: rgba(15, 17, 26, 0.5);
  --spine-shadow: rgba(0, 0, 0, 0.7);
  --page-shadow: 0 15px 35px rgba(0, 0, 0, 0.85);
  --feather-glow: #e2e8f0;
}

/* ── THEME 2: SEPIA PARCHMENT ─────────────────────────────────────────── */
body.theme-sepia-parchment {
  --bg-table: #2b1f17;
  --bg-page: #f4ecd8;
  --bg-page-inner: #f8f2e2;
  --leather-binding: #3d271d;
  --leather-border: #5a3a2a;
  --text-primary: #2c2016;
  --text-secondary: #4a382a;
  --text-muted: #7c6753;
  --border-page: rgba(140, 95, 45, 0.35);
  --border-card: rgba(120, 80, 40, 0.2);
  --card-bg: rgba(235, 222, 198, 0.75);
  --card-hover: rgba(245, 235, 215, 0.95);
  --card-locked: rgba(215, 200, 180, 0.5);
  --spine-shadow: rgba(45, 30, 20, 0.55);
  --page-shadow: 0 15px 30px rgba(25, 15, 10, 0.6);
  --feather-glow: #4a382a;
}

/* ── THEME 3: ILLUMINATED VELLUM (Book I Default) ─────────────────────── */
body.theme-illuminated-vellum {
  --bg-table: #191612;
  --bg-page: #faf4e5;
  --bg-page-inner: #fcf8ee;
  --leather-binding: #2a1c12;
  --leather-border: #4a3320;
  --text-primary: #2b1d12;
  --text-secondary: #483222;
  --text-muted: #7a614e;
  --border-page: rgba(200, 155, 60, 0.45);
  --border-card: rgba(180, 135, 50, 0.24);
  --card-bg: rgba(245, 236, 216, 0.85);
  --card-hover: rgba(254, 250, 240, 0.98);
  --card-locked: rgba(220, 205, 185, 0.55);
  --spine-shadow: rgba(30, 20, 15, 0.6);
  --page-shadow: 0 15px 35px rgba(15, 10, 5, 0.65);
  --feather-glow: #ca8a04;
  --gold-leaf: #d4af37;
  --leaf-green: #15803d;
}

/* ── THEME 4: STARLIT LOOM (Book I Alternate) ─────────────────────────── */
body.theme-starlit-loom {
  --bg-table: #060913;
  --bg-page: #0d1527;
  --bg-page-inner: #111d35;
  --leather-binding: #131d33;
  --leather-border: #233554;
  --text-primary: #fef08a;
  --text-secondary: #fde047;
  --text-muted: #93c5fd;
  --border-page: rgba(250, 204, 21, 0.35);
  --border-card: rgba(56, 189, 248, 0.22);
  --card-bg: rgba(15, 23, 42, 0.75);
  --card-hover: rgba(30, 41, 59, 0.92);
  --card-locked: rgba(10, 15, 30, 0.5);
  --spine-shadow: rgba(0, 0, 0, 0.85);
  --page-shadow: 0 15px 40px rgba(0, 0, 0, 0.92);
  --feather-glow: #fef08a;
  --gold-leaf: #f59e0b;
  --leaf-green: #38bdf8;
}

/* Base Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-size: 16px;
  background-color: var(--bg-table);
  color: var(--text-primary);
  font-family: var(--font-story);
  user-select: text;
}

/* ── AMBIENT ENVIRONMENT (Table, Candles, Aurora) ──────────────────────── */
.table-surface {
  position: fixed;
  inset: 0;
  background-color: var(--bg-table);
  background-image: 
    radial-gradient(circle at 50% 50%, rgba(0,0,0,0.1), rgba(0,0,0,0.8)),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.01) 0px, rgba(255,255,255,0.01) 2px, transparent 2px, transparent 4px);
  z-index: 0;
}

.aurora-sky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 40vh;
  background: radial-gradient(ellipse at 50% -20%, rgba(192, 132, 252, 0.12) 0%, rgba(45, 212, 191, 0.08) 50%, transparent 80%);
  pointer-events: none;
  z-index: 1;
  animation: auroraPulse 14s ease-in-out infinite alternate;
}

@keyframes auroraPulse {
  0% { opacity: 0.6; transform: scaleY(1); }
  100% { opacity: 1; transform: scaleY(1.2); }
}

.candle-glow {
  position: fixed;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
  animation: candleFlicker 6s infinite ease-in-out;
}
.left-candle { top: 15%; left: 5%; }
.right-candle { bottom: 15%; right: 5%; animation-delay: -3s; }

@keyframes candleFlicker {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.08); }
}

/* ── MAIN VIEWPORT & HUD ──────────────────────────────────────────────── */
.grimoire-viewport {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  z-index: 2;
}

.tome-hud {
  height: 54px;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 12, 18, 0.65);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-card);
  z-index: 10;
}

.hud-left, .hud-center, .hud-right {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.hud-back-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: all 0.2s;
}
.hud-back-link:hover {
  color: var(--gold-accent);
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-page);
}

.hud-zone-badge {
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 0.5px;
  color: var(--gold-accent);
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--border-page);
  border-radius: 20px;
}

.hud-character-chip {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.25);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  border: 1px solid var(--border-card);
}
.char-separator { margin: 0 0.35rem; opacity: 0.4; }

.hud-omens {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.omens-feathers {
  display: flex;
  gap: 0.2rem;
}

.omen-feather-icon {
  display: inline-block;
  font-size: 1.1rem;
  filter: drop-shadow(0 0 5px var(--aurora-teal));
  animation: featherShimmer 3s infinite alternate;
}

@keyframes featherShimmer {
  0% { transform: translateY(0); }
  100% { transform: translateY(-2px); }
}

.hud-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--card-bg);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}
.hud-btn:hover {
  background: var(--card-hover);
  color: var(--text-primary);
  border-color: var(--gold-accent);
}

.menu-btn {
  border-color: var(--gold-accent);
  color: var(--gold-accent);
  background: rgba(212, 175, 55, 0.12);
}

/* ── 3D TOME / GRIMOIRE PHYSICAL SPREAD ───────────────────────────────── */
.tome-scene {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 2rem 2.5rem;
  perspective: 2200px;
  overflow: hidden;
}

.tome-book {
  position: relative;
  width: 100%;
  max-width: 1200px;
  height: 100%;
  max-height: 820px;
  display: flex;
  border-radius: 12px;
  box-shadow: var(--page-shadow);
  transform-style: preserve-3d;
}

/* 3D Page Leaf Turn Overlay */
.turning-leaf {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 50%;
  transform-origin: left center;
  transform-style: preserve-3d;
  z-index: 40;
  pointer-events: none;
  animation: flipLeaf3D 0.72s cubic-bezier(0.45, 0.05, 0.2, 0.99) forwards;
}

.leaf-face {
  position: absolute;
  inset: 0;
  background: var(--bg-page);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow: hidden;
  border-top-right-radius: 8px;
  border-bottom-right-radius: 8px;
}

.leaf-front {
  border-left: 1px solid rgba(0, 0, 0, 0.4);
  box-shadow: inset -30px 0 40px -20px var(--spine-shadow), -12px 0 28px rgba(0, 0, 0, 0.45);
}

.leaf-front::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.45) 0%, transparent 45%, rgba(255,255,255,0.06) 85%, rgba(0,0,0,0.25) 100%);
  animation: leafFrontShading 0.72s ease-in-out forwards;
  pointer-events: none;
}

.leaf-back {
  transform: rotateY(180deg);
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-top-left-radius: 8px;
  border-bottom-left-radius: 8px;
  border-right: 1px solid rgba(0, 0, 0, 0.4);
  box-shadow: inset 30px 0 40px -20px var(--spine-shadow), 15px 0 35px rgba(0, 0, 0, 0.65);
}

.leaf-back::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(270deg, rgba(0,0,0,0.5) 0%, transparent 50%, rgba(0,0,0,0.2) 100%);
  animation: leafBackShading 0.72s ease-in-out forwards;
  pointer-events: none;
}

/* Dynamic cast shadow on underlying book pages during flip */
.tome-book.is-turning::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 8px;
  pointer-events: none;
  z-index: 25;
  animation: bookSpreadShadow 0.72s ease-in-out forwards;
}

@keyframes flipLeaf3D {
  0% {
    transform: rotateY(0deg) skewY(0deg);
  }
  35% {
    transform: rotateY(-70deg) skewY(-2.5deg);
  }
  65% {
    transform: rotateY(-125deg) skewY(-1.5deg);
  }
  100% {
    transform: rotateY(-180deg) skewY(0deg);
  }
}

@keyframes leafFrontShading {
  0% { opacity: 0.1; }
  50% { opacity: 0.85; }
  100% { opacity: 1; }
}

@keyframes leafBackShading {
  0% { opacity: 1; }
  50% { opacity: 0.75; }
  100% { opacity: 0.05; }
}

@keyframes bookSpreadShadow {
  0% {
    background: linear-gradient(90deg, transparent 48%, rgba(0,0,0,0.35) 52%, transparent 65%);
  }
  45% {
    background: linear-gradient(90deg, rgba(0,0,0,0.5) 15%, rgba(0,0,0,0.65) 50%, rgba(0,0,0,0.2) 85%);
  }
  100% {
    background: linear-gradient(90deg, transparent 20%, rgba(0,0,0,0.15) 50%, transparent 55%);
  }
}

.tome-leather-wrap {
  position: absolute;
  inset: -14px -14px -14px -14px;
  background: var(--leather-binding);
  border: 3px solid var(--leather-border);
  border-radius: 18px;
  box-shadow: inset 0 0 40px rgba(0,0,0,0.8), 0 20px 50px rgba(0,0,0,0.9);
  z-index: 1;
}

.tome-spine-crease {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 32px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, 
    transparent 0%, 
    var(--spine-shadow) 30%, 
    rgba(0,0,0,0.85) 50%, 
    var(--spine-shadow) 70%, 
    transparent 100%);
  z-index: 6;
  pointer-events: none;
}

/* Tome Folio Pages (Left & Right) */
.tome-page {
  position: relative;
  flex: 1;
  height: 100%;
  background: var(--bg-page);
  z-index: 3;
  overflow: hidden;
}

.left-page {
  border-top-left-radius: 8px;
  border-bottom-left-radius: 8px;
  border-right: 1px solid rgba(0, 0, 0, 0.4);
  box-shadow: inset 30px 0 40px -20px var(--spine-shadow);
}

.right-page {
  border-top-right-radius: 8px;
  border-bottom-right-radius: 8px;
  border-left: 1px solid rgba(0, 0, 0, 0.4);
  box-shadow: inset -30px 0 40px -20px var(--spine-shadow);
}

.page-inner {
  position: relative;
  width: 100%;
  height: 100%;
  padding: 2.2rem 2.8rem;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(ellipse at 50% 50%, transparent 60%, rgba(0,0,0,0.06) 100%);
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--border-page);
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--gold-accent);
}

.page-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-page);
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
}

.page-content-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 0.5rem 1rem 0;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-accent) transparent;
}

/* ── STORY TEXT TYPOGRAPHY ────────────────────────────────────────────── */
.story-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--gold-accent);
  text-shadow: 0 2px 4px rgba(0,0,0,0.4);
  margin-bottom: 0.5rem;
}

.title-rune-divider {
  font-family: var(--font-rune);
  font-size: 1rem;
  letter-spacing: 4px;
  color: var(--gold-accent);
  opacity: 0.65;
  margin-bottom: 1.4rem;
}

.story-paragraphs p {
  font-size: 1.15rem;
  line-height: 1.75;
  margin-bottom: 1.2rem;
  text-align: justify;
  text-justify: inter-word;
  color: var(--text-primary);
}

.story-paragraphs p:first-of-type::first-letter {
  font-family: var(--font-display);
  font-size: 3.2rem;
  line-height: 0.85;
  float: left;
  margin: 0.15rem 0.45rem 0 0;
  color: var(--gold-accent);
  font-weight: 700;
  text-shadow: 0 2px 6px rgba(0,0,0,0.5);
}

/* ── CHOICES & CRUCIBLE BUTTONS ───────────────────────────────────────── */
.choices-container {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-page);
}

.choices-header-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gold-accent);
  text-align: center;
  margin-bottom: 1rem;
}

.choices-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.choice-card {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.9rem 1.15rem;
  background: var(--card-bg);
  border: 1px solid var(--border-card);
  border-left: 3px solid var(--gold-accent);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-story);
  font-size: 1.05rem;
  line-height: 1.45;
  text-align: left;
  cursor: pointer;
  transition: all 0.22s ease-out;
  position: relative;
  overflow: hidden;
}

.choice-card:hover:not(:disabled) {
  background: var(--card-hover);
  border-color: var(--gold-accent);
  transform: translateX(4px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

.choice-card:active:not(:disabled) {
  transform: translateX(2px);
}

.choice-bullet {
  font-family: var(--font-display);
  color: var(--gold-accent);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.choice-content {
  flex: 1;
}

.choice-text {
  display: block;
}

.choice-meta-chips {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.35rem;
}

.meta-chip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-card);
}
.meta-chip.omen { color: var(--aurora-teal); border-color: rgba(45, 212, 191, 0.3); }
.meta-chip.favor { color: var(--aurora-amber); border-color: rgba(245, 158, 11, 0.3); }

/* Gated & Locked Choices */
.choice-card.locked {
  background: var(--card-locked);
  opacity: 0.55;
  cursor: not-allowed;
  border-left-color: #64748b;
  filter: grayscale(0.5);
}

.choice-locked-hint {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.85rem;
  font-style: italic;
  color: #ef4444;
  font-family: var(--font-display);
}

/* ── CHARACTER CREATION CARD GRIDS ───────────────────────────────────── */
.creation-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.creation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}

.create-card {
  padding: 0.85rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border-card);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
}
.create-card:hover {
  background: var(--card-hover);
  border-color: var(--gold-accent);
}
.create-card.selected {
  border-color: var(--gold-accent);
  background: rgba(212, 175, 55, 0.15);
  box-shadow: 0 0 12px var(--gold-glow);
}

.create-card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gold-accent);
  margin-bottom: 0.2rem;
}

.create-card-tagline {
  font-size: 0.82rem;
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.create-card-desc {
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.create-card-trait {
  font-size: 0.8rem;
  color: var(--aurora-teal);
  font-family: var(--font-mono);
}

/* ── ENDING PRESENTATION ─────────────────────────────────────────────── */
.ending-container {
  margin-top: 1.5rem;
  text-align: center;
  padding: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-page);
  border-radius: 8px;
}

.ending-badge {
  display: inline-block;
  padding: 0.25rem 0.85rem;
  border-radius: 20px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.ending-badge.tone-triumphant { background: rgba(34, 197, 94, 0.2); color: #4ade80; border: 1px solid #22c55e; }
.ending-badge.tone-bittersweet { background: rgba(245, 158, 11, 0.2); color: #fbbf24; border: 1px solid #f59e0b; }
.ending-badge.tone-somber { background: rgba(56, 189, 248, 0.2); color: #7dd3fc; border: 1px solid #0284c7; }
.ending-badge.tone-grim { background: rgba(239, 68, 68, 0.2); color: #f87171; border: 1px solid #dc2626; }
.ending-badge.tone-chilling { background: rgba(168, 85, 247, 0.2); color: #c084fc; border: 1px solid #9333ea; }
.ending-badge.tone-mysterious { background: rgba(255, 255, 255, 0.15); color: #ffffff; border: 1px solid #ffffff; }
.ending-badge.tone-peaceful { background: rgba(16, 185, 129, 0.22); color: #34d399; border: 1px solid #059669; }
.ending-badge.tone-hopeful { background: rgba(217, 119, 6, 0.22); color: #f59e0b; border: 1px solid #d97706; }

.ending-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--gold-accent);
  margin-bottom: 1rem;
}

.ending-epilogue-box {
  font-size: 1.15rem;
  font-style: italic;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  padding: 1rem;
  border-left: 2px solid var(--gold-accent);
  background: rgba(0, 0, 0, 0.15);
}

.ending-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.ending-actions .choice-card {
  max-width: 260px;
  justify-content: center;
}

/* Series Bridge Button (Book I end-reborn -> Book II) */
.btn-action-continue-book2 {
  max-width: 360px !important;
  background: linear-gradient(135deg, rgba(180, 83, 9, 0.35) 0%, rgba(220, 38, 38, 0.35) 100%) !important;
  border: 1px solid #f59e0b !important;
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.35);
  animation: pulseBridge 2.2s infinite alternate ease-in-out;
}
.btn-action-continue-book2:hover {
  background: linear-gradient(135deg, rgba(180, 83, 9, 0.6) 0%, rgba(220, 38, 38, 0.6) 100%) !important;
  box-shadow: 0 0 24px rgba(245, 158, 11, 0.6);
  transform: translateY(-2px);
}
@keyframes pulseBridge {
  0% { box-shadow: 0 0 10px rgba(245, 158, 11, 0.25); }
  100% { box-shadow: 0 0 22px rgba(245, 158, 11, 0.6); }
}

/* ── BRAIDED SILK RIBBON BOOKMARK ─────────────────────────────────────── */
.silk-ribbon-bookmark {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 38px;
  height: 65px;
  z-index: 8;
  cursor: pointer;
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.6));
  transition: transform 0.2s;
}

.silk-ribbon-bookmark:hover {
  transform: translateX(-50%) translateY(6px);
}

.ribbon-tail {
  width: 100%;
  height: 100%;
  clip-path: polygon(0 0, 100% 0, 100% 80%, 50% 100%, 0 80%);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Book II Ribbon: Crimson & Gold */
.silk-ribbon-bookmark.ribbon-book-2 .ribbon-tail {
  background: linear-gradient(180deg, #991b1b 0%, #b91c1c 80%, #7f1d1d 100%);
  border-top: 2px solid #fef08a;
}
.silk-ribbon-bookmark.ribbon-book-2 .ribbon-icon {
  color: #fef08a;
}

/* Book I Ribbon: Gold & Emerald Green */
.silk-ribbon-bookmark.ribbon-book-1 .ribbon-tail {
  background: linear-gradient(180deg, #15803d 0%, #16a34a 80%, #14532d 100%);
  border-top: 2px solid #eab308;
}
.silk-ribbon-bookmark.ribbon-book-1 .ribbon-icon {
  color: #fef08a;
}

.ribbon-icon {
  color: #fef08a;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

/* ── SLIDE-OVER ANNALS DRAWER ─────────────────────────────────────────── */
.annals-drawer {
  position: fixed;
  top: 0;
  right: -500px;
  width: 480px;
  max-width: 90vw;
  height: 100%;
  background: var(--bg-page-inner);
  border-left: 2px solid var(--border-page);
  box-shadow: -10px 0 35px rgba(0, 0, 0, 0.8);
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: right 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.annals-drawer.open {
  right: 0;
}

.drawer-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-page);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.drawer-icon { font-size: 1.4rem; }
.drawer-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--gold-accent);
}

.drawer-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
}
.drawer-close-btn:hover { color: var(--text-primary); }

.drawer-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-card);
  background: rgba(0, 0, 0, 0.2);
}

.drawer-tab-btn {
  flex: 1;
  padding: 0.75rem 0.5rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.76rem;
  cursor: pointer;
  transition: all 0.2s;
}
.drawer-tab-btn:hover { color: var(--text-primary); }
.drawer-tab-btn.active {
  color: var(--gold-accent);
  border-bottom-color: var(--gold-accent);
  background: rgba(255, 255, 255, 0.03);
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  scrollbar-width: thin;
}

.drawer-pane { display: none; }
.drawer-pane.active { display: block; }

.pane-intro {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

/* Endings Gallery Grid */
.endings-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.ending-card-item {
  padding: 0.85rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border-card);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.ending-card-item.unlocked {
  border-left: 3px solid var(--gold-accent);
}
.ending-card-item.locked {
  opacity: 0.45;
  filter: grayscale(1);
}

.ending-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ending-card-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.ending-card-quote {
  font-size: 0.85rem;
  font-style: italic;
  color: var(--text-muted);
  line-height: 1.4;
}

/* History Timeline */
.history-timeline {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  border-left: 2px solid var(--border-page);
  padding-left: 1rem;
  margin-left: 0.5rem;
}

.history-item {
  position: relative;
}
.history-item::before {
  content: '';
  position: absolute;
  left: -1.35rem;
  top: 0.25rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold-accent);
}

.history-node-title {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--gold-accent);
}
.history-node-zone {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Settings Controls */
.settings-group {
  margin-bottom: 1.75rem;
}

.settings-group-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--gold-accent);
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-card);
  padding-bottom: 0.35rem;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  cursor: pointer;
}

.setting-row select {
  background: var(--bg-table);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  padding: 0.35rem 0.6rem;
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 0.8rem;
}

.setting-row-slider {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
}
.setting-row-slider input[type="range"] {
  width: 140px;
}

.settings-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.btn-danger-reset {
  width: 100%;
  padding: 0.65rem;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #f87171;
  border-radius: 6px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-danger-reset:hover {
  background: rgba(239, 68, 68, 0.3);
}

/* Backdrop */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.drawer-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

/* ── TITLE / WELCOME MODAL ────────────────────────────────────────────── */
.title-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 12, 0.85);
  backdrop-filter: blur(8px);
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.title-modal-card {
  max-width: 620px;
  background: var(--bg-page-inner);
  border: 2px solid var(--border-page);
  border-radius: 12px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.85);
  padding: 2.5rem 3rem;
  text-align: center;
}

.title-rune-top {
  font-family: var(--font-rune);
  font-size: 1.2rem;
  color: var(--gold-accent);
  letter-spacing: 4px;
  margin-bottom: 0.5rem;
}

.title-main {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--gold-accent);
  text-shadow: 0 2px 10px rgba(0,0,0,0.6);
  line-height: 1;
}

.title-sub {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  font-style: italic;
}

.title-divider-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-accent), transparent);
  margin: 1.2rem auto;
}

.title-quote {
  font-size: 1.15rem;
  font-style: italic;
  color: var(--aurora-teal);
  margin-bottom: 1rem;
}

.title-summary {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.title-stats-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--gold-accent);
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--border-page);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  margin-bottom: 1.8rem;
}

.title-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.title-btn-primary {
  padding: 0.85rem 1.8rem;
  background: linear-gradient(135deg, #d4af37, #b89628);
  border: none;
  border-radius: 6px;
  color: #12131a;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.35);
  transition: all 0.2s;
}
.title-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
}

.title-btn-secondary {
  padding: 0.85rem 1.4rem;
  background: transparent;
  border: 1px solid var(--border-page);
  border-radius: 6px;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
}
.title-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.how-to-play-box {
  margin-top: 1.5rem;
  padding: 1.2rem;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  text-align: left;
}
.how-to-play-box h3 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--gold-accent);
  margin-bottom: 0.5rem;
}
.how-to-play-box ul {
  padding-left: 1.2rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.how-to-play-box li {
  margin-bottom: 0.4rem;
}

/* ── RESPONSIVE MOBILE ADJUSTMENTS (SINGLE PAGE GRIMOIRE) ─────────────── */
@media (max-width: 900px) {
  .tome-scene {
    padding: 0.5rem 0.5rem 1.5rem;
  }
  
  .tome-book {
    flex-direction: column;
    max-height: none;
    height: 100%;
  }

  .tome-leather-wrap {
    inset: -6px;
  }

  .tome-spine-crease {
    display: none;
  }

  .left-page {
    border-radius: 8px 8px 0 0;
    border-right: none;
    border-bottom: 1px dashed var(--border-page);
    height: auto;
    max-height: 45%;
    box-shadow: none;
  }

  .right-page {
    border-radius: 0 0 8px 8px;
    border-left: none;
    height: auto;
    flex: 1;
    box-shadow: none;
  }

  .page-inner {
    padding: 1.2rem 1.4rem;
  }

  .story-title {
    font-size: 1.4rem;
  }

  .story-paragraphs p {
    font-size: 1rem;
    line-height: 1.55;
  }

  .hud-back-link .label {
    display: none;
  }

  .turning-leaf {
    left: 0;
    width: 100%;
    animation: flipMobileLeaf3D 0.6s cubic-bezier(0.45, 0.05, 0.2, 0.99) forwards;
  }
}

@keyframes flipMobileLeaf3D {
  0% {
    transform: rotateY(0deg);
    opacity: 1;
  }
  50% {
    transform: rotateY(-90deg);
    opacity: 0.7;
  }
  100% {
    transform: rotateY(-110deg);
    opacity: 0;
  }
}

/* ── PROCEDURAL HEARTH & AMBIENT VISUAL EFFECTS ───────────────────────── */
.hud-btn.audio-active {
  border-color: #f59e0b;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.16);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.35), inset 0 0 6px rgba(245, 158, 11, 0.2);
}

body.hearth-active .candle-glow {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.22) 0%, rgba(234, 88, 12, 0.09) 45%, transparent 72%);
  animation: candleFlickerActive 3.2s infinite ease-in-out;
}

@keyframes candleFlickerActive {
  0%, 100% { opacity: 0.75; transform: scale(1); }
  35% { opacity: 1; transform: scale(1.09); }
  70% { opacity: 0.82; transform: scale(0.97); }
}

.hearth-embers-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  overflow: hidden;
}

.hearth-vignette-glow {
  position: fixed;
  bottom: -15vh;
  left: 10%;
  right: 10%;
  height: 38vh;
  background: radial-gradient(ellipse at 50% 100%, rgba(245, 158, 11, 0.22) 0%, rgba(217, 119, 6, 0.08) 50%, transparent 75%);
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.6s ease;
}

body.hearth-active .hearth-vignette-glow {
  opacity: 1;
  animation: hearthBreath 4s ease-in-out infinite alternate;
}

@keyframes hearthBreath {
  0% { transform: scaleY(0.95) scaleX(0.98); opacity: 0.75; }
  100% { transform: scaleY(1.12) scaleX(1.04); opacity: 1; }
}

.hearth-ember {
  position: absolute;
  bottom: -12px;
  border-radius: 50%;
  background: radial-gradient(circle, #fef08a 0%, #f59e0b 55%, #ea580c 100%);
  box-shadow: 0 0 8px 2px rgba(245, 158, 11, 0.85);
  pointer-events: none;
  animation: emberRise linear forwards;
}

@keyframes emberRise {
  0% {
    transform: translateY(0) translateX(0) scale(1);
    opacity: 0.95;
  }
  50% {
    transform: translateY(-45vh) translateX(var(--ember-drift, 24px)) scale(0.8);
    opacity: 0.75;
  }
  100% {
    transform: translateY(-92vh) translateX(calc(var(--ember-drift, 24px) * -0.8)) scale(0.2);
    opacity: 0;
  }
}

/* ── STARLIGHT MOTES (Book I Visual Atmosphere) ───────────────────────── */
.starlight-mote {
  position: absolute;
  bottom: -12px;
  border-radius: 50%;
  background: radial-gradient(circle, #ffffff 0%, #fde047 45%, #15803d 100%);
  box-shadow: 0 0 10px 3px rgba(250, 204, 21, 0.85);
  pointer-events: none;
  animation: starlightRise linear forwards;
}

@keyframes starlightRise {
  0% {
    transform: translateY(0) translateX(0) scale(0.8) rotate(0deg);
    opacity: 0.95;
  }
  50% {
    transform: translateY(-45vh) translateX(var(--mote-drift, 20px)) scale(1.1) rotate(180deg);
    opacity: 0.85;
  }
  100% {
    transform: translateY(-94vh) translateX(calc(var(--mote-drift, 20px) * -0.6)) scale(0.3) rotate(360deg);
    opacity: 0;
  }
}

/* ── HUD & DRAWER RETURN TO SHELF BUTTONS ─────────────────────────────── */
.hud-shelf-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(212, 175, 55, 0.12);
  border: 1px solid rgba(212, 175, 55, 0.35);
  color: var(--gold-accent);
}
.hud-shelf-btn:hover {
  background: rgba(212, 175, 55, 0.25);
  border-color: var(--gold-accent);
}

.drawer-shelf-nav {
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border-page);
  background: rgba(0, 0, 0, 0.15);
}
.drawer-shelf-return-btn {
  width: 100%;
  padding: 0.6rem 1rem;
  background: rgba(212, 175, 55, 0.12);
  border: 1px solid rgba(212, 175, 55, 0.4);
  color: var(--gold-accent);
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s;
}
.drawer-shelf-return-btn:hover {
  background: rgba(212, 175, 55, 0.25);
  border-color: var(--gold-accent);
}

/* ── AETHEL'S FRAGMENT HUD GLYPH ──────────────────────────────────────── */
.hud-fragment-glyph {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  background: linear-gradient(135deg, rgba(202, 138, 4, 0.25) 0%, rgba(234, 179, 8, 0.15) 100%);
  border: 1px solid #eab308;
  border-radius: 20px;
  color: #fef08a;
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  box-shadow: 0 0 10px rgba(234, 179, 8, 0.35);
  animation: fragmentGlow 2.5s infinite alternate ease-in-out;
}
@keyframes fragmentGlow {
  0% { box-shadow: 0 0 6px rgba(234, 179, 8, 0.2); }
  100% { box-shadow: 0 0 14px rgba(234, 179, 8, 0.55); }
}

/* ── AFFINITY THREAD STYLING ─────────────────────────────────────────── */
.affinity-tinted {
  border-color: var(--affinity-thread-color, var(--gold-accent)) !important;
  color: var(--affinity-thread-color, var(--gold-accent)) !important;
  box-shadow: 0 0 10px var(--affinity-thread-color, rgba(212, 175, 55, 0.3));
}

/* ── BOOK II PROLOGUE REBORN RECOGNITION CALLOUT ──────────────────────── */
.prologue-reborn-callout {
  margin: 1.25rem 0;
  padding: 0.9rem 1.15rem;
  background: linear-gradient(90deg, rgba(202, 138, 4, 0.18) 0%, rgba(0, 0, 0, 0.2) 100%);
  border-left: 3px solid #eab308;
  border-radius: 0 6px 6px 0;
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.55;
  color: #fef08a;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* ── CHAPTER MOOD PALETTES (Book I & II Dynamic Tome Ambience) ────────── */
#tome-book.mood-before-time {
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.25), var(--page-shadow);
}
#tome-book.mood-creation {
  box-shadow: 0 15px 45px rgba(234, 179, 8, 0.3), var(--page-shadow);
}
#tome-book.mood-dawning {
  box-shadow: 0 15px 40px rgba(34, 197, 94, 0.25), var(--page-shadow);
}
#tome-book.mood-warning {
  box-shadow: 0 15px 40px rgba(245, 158, 11, 0.3), var(--page-shadow);
}
#tome-book.mood-first-war {
  box-shadow: 0 15px 45px rgba(220, 38, 38, 0.35), var(--page-shadow);
}
#tome-book.mood-sacrifices {
  box-shadow: 0 15px 40px rgba(148, 163, 184, 0.3), var(--page-shadow);
}
#tome-book.mood-sundering {
  box-shadow: 0 15px 45px rgba(147, 51, 234, 0.35), var(--page-shadow);
}
#tome-book.mood-vigil {
  box-shadow: 0 15px 40px rgba(56, 189, 248, 0.3), var(--page-shadow);
}
#tome-book.mood-turning {
  box-shadow: 0 15px 50px rgba(212, 175, 55, 0.4), var(--page-shadow);
}

/* =========================================================================
   THE SHELF VIEW ("The Chronicles of Kaalas")
   ========================================================================= */
.shelf-scene {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at 50% 25%, #171b29 0%, #0c0f18 60%, #06070c 100%);
  overflow-y: auto;
  perspective: 1200px;
  padding: 1.5rem;
}

.shelf-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.shelf-portal-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.85rem;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.25);
  transition: all 0.2s;
}
.shelf-portal-link:hover {
  color: var(--gold-accent);
  border-color: var(--gold-accent);
  background: rgba(212, 175, 55, 0.1);
}

.shelf-header-center {
  text-align: center;
}
.shelf-title-rune {
  color: var(--gold-accent);
  letter-spacing: 4px;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}
.shelf-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--gold-accent);
  letter-spacing: 2px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.7);
}
.shelf-subtitle {
  font-family: var(--font-story);
  font-style: italic;
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-top: 0.25rem;
}

.shelf-audio-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(212, 175, 55, 0.3);
  color: var(--text-secondary);
  padding: 0.45rem 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.8rem;
  transition: all 0.2s;
}
.shelf-audio-btn:hover {
  color: var(--gold-accent);
  border-color: var(--gold-accent);
}
.shelf-audio-btn.audio-active {
  background: rgba(212, 175, 55, 0.2);
  color: var(--gold-accent);
  border-color: var(--gold-accent);
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.3);
}

.shelf-tomes-container {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 3.5rem;
  max-width: 1100px;
  margin: 2.5rem auto 1.5rem;
  width: 100%;
}

.shelf-tome-wrapper {
  flex: 1;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  align-items: center;
  perspective: 1200px;
}

/* 3D Skeuomorphic Closed Book */
.shelf-tome-book {
  position: relative;
  width: 260px;
  height: 380px;
  border-radius: 4px 14px 14px 4px;
  transform-style: preserve-3d;
  transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.45s ease;
  cursor: pointer;
  box-shadow: -14px 18px 30px rgba(0, 0, 0, 0.75);
  margin-bottom: 1.5rem;
  transform: rotateY(-6deg) rotateX(2deg);
}

.shelf-tome-book:hover,
.shelf-tome-book:focus-visible {
  transform: translateY(-16px) rotateY(-18deg) rotateX(6deg) scale(1.05);
  box-shadow: -22px 30px 50px rgba(0, 0, 0, 0.9), 0 0 30px rgba(212, 175, 55, 0.4);
}

.tome-closed-cover {
  position: absolute;
  inset: 0;
  border-radius: 4px 14px 14px 4px;
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  text-align: center;
  box-sizing: border-box;
  overflow: hidden;
  transform-style: preserve-3d;
}

/* Dynamic Specular Sheen across Cover */
.tome-closed-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 4px 14px 14px 4px;
  background: radial-gradient(circle at var(--sheen-x, 50%) var(--sheen-y, 30%), rgba(255, 255, 255, 0.45) 0%, rgba(255, 255, 255, 0.08) 50%, transparent 80%);
  opacity: var(--sheen-opacity, 0.25);
  pointer-events: none;
  z-index: 5;
  transition: opacity 0.3s ease;
}
.shelf-tome-book:hover .tome-closed-cover::before {
  opacity: var(--sheen-opacity, 0.55);
}

/* Ornamental Filigree Borders */
.cover-filigree {
  position: absolute;
  inset: 10px;
  border-radius: 3px 10px 10px 3px;
  pointer-events: none;
  z-index: 1;
  transform: translateZ(8px);
}

/* Book I Cover: Illuminated Vellum & Gold Leaf */
.tome-book-1 .vellum-cover {
  background: radial-gradient(circle at 50% 30%, #faf3e0 0%, #ede0bd 65%, #c8b082 100%);
  border: 4px solid #b48a3c;
  box-shadow: inset 0 0 20px rgba(180, 138, 60, 0.4);
}
.cover-gold-filigree {
  border: 2px solid #b48a3c;
  outline: 1px dashed rgba(180, 138, 60, 0.55);
  outline-offset: -5px;
  box-shadow: inset 0 0 14px rgba(180, 138, 60, 0.35);
}

/* Book II Cover: Dark Grimoire Leather & Silver / Iron */
.tome-book-2 .grimoire-cover {
  background: radial-gradient(circle at 50% 30%, #1f1a16 0%, #130f0d 70%, #0a0706 100%);
  border: 4px solid #7c2d12;
  box-shadow: inset 0 0 25px rgba(0, 0, 0, 0.8);
}
.cover-silver-filigree {
  border: 2px solid #64748b;
  outline: 1px dashed rgba(148, 163, 184, 0.45);
  outline-offset: -5px;
  box-shadow: inset 0 0 16px rgba(0, 0, 0, 0.7);
}

/* Top Crest Medallion with Roman Numeral */
.cover-crest {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  margin-top: 0.2rem;
  z-index: 2;
  transform: translateZ(22px);
  transition: transform 0.35s ease;
}
.crest-numeral {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 1px;
}
.shelf-tome-book:hover .cover-crest {
  transform: translateZ(28px) scale(1.06);
}
.tome-book-1 .cover-crest {
  background: radial-gradient(circle, #fcf8ee 0%, #d4af37 75%, #8a6428 100%);
  border: 2px solid #72511f;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35), inset 0 1px 2px rgba(255, 255, 255, 0.8);
  color: #2b1d12;
}
.tome-book-2 .cover-crest {
  background: radial-gradient(circle, #334155 0%, #1e293b 70%, #0f172a 100%);
  border: 2px solid #64748b;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.6), inset 0 1px 2px rgba(255, 255, 255, 0.25);
  color: #f1f5f9;
}

/* Gilded Foil-Stamped Title Plaque */
.cover-title-plate {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
  padding: 0.4rem 0.6rem;
  margin: 0.2rem 0;
  border-top: 1px solid rgba(180, 138, 60, 0.45);
  border-bottom: 1px solid rgba(180, 138, 60, 0.45);
  background: rgba(0, 0, 0, 0.12);
  border-radius: 4px;
  transform: translateZ(20px);
  z-index: 3;
}
.tome-book-2 .cover-title-plate {
  border-top-color: rgba(148, 163, 184, 0.4);
  border-bottom-color: rgba(148, 163, 184, 0.4);
  background: rgba(0, 0, 0, 0.32);
}

.plate-flourish-top {
  font-size: 0.68rem;
  letter-spacing: 3px;
  opacity: 0.75;
  margin-bottom: 0.1rem;
}
.tome-book-1 .plate-flourish-top { color: #8a6428; }
.tome-book-2 .plate-flourish-top { color: #94a3b8; }

.plate-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin: 0.15rem 0;
  line-height: 1.25;
}
.tome-book-1 .plate-title {
  background: linear-gradient(180deg, #fff7d6 0%, #d4af37 40%, #9a7322 80%, #5a4114 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 1px 2px rgba(80, 50, 10, 0.6));
}
.tome-book-2 .plate-title {
  background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 45%, #94a3b8 80%, #475569 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.95));
}

.plate-subtitle {
  font-family: var(--font-story);
  font-style: italic;
  font-size: 0.82rem;
  margin: 0.1rem 0 0;
  line-height: 1.2;
}
.tome-book-1 .plate-subtitle {
  color: #4a3420;
  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.7);
}
.tome-book-2 .plate-subtitle {
  color: #cbd5e1;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.85);
}

/* Central Deeply-Embossed Insignia Medallion */
.cover-medallion {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin: 0.35rem 0;
  z-index: 2;
  transform: translateZ(26px);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.shelf-tome-book:hover .cover-medallion,
.shelf-tome-book:focus-visible .cover-medallion {
  transform: translateZ(36px) scale(1.08);
}
.tome-book-1 .cover-medallion {
  background: radial-gradient(circle, #fffdf8 0%, #ede0bd 60%, #c4a87c 100%);
  border: 3px double #b48a3c;
  box-shadow: 0 6px 16px rgba(114, 81, 31, 0.3), inset 0 0 16px rgba(180, 138, 60, 0.35);
}
.tome-book-2 .cover-medallion {
  background: radial-gradient(circle, #25201c 0%, #151210 65%, #0a0807 100%);
  border: 3px double #7c2d12;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.8), inset 0 0 18px rgba(0, 0, 0, 0.9), 0 0 15px rgba(239, 68, 68, 0.2);
}

.cover-sigil {
  font-size: 2.6rem;
  line-height: 1;
}
.tome-book-1 .cover-sigil {
  color: #b48a3c;
  filter: drop-shadow(0 2px 4px rgba(114, 81, 31, 0.4));
}
.tome-book-2 .cover-sigil {
  color: #f1f5f9;
  filter: drop-shadow(0 0 12px rgba(241, 245, 249, 0.7));
}

/* Base Rune & Flourish */
.cover-base-rune {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 4px;
  z-index: 2;
  opacity: 0.65;
  margin-bottom: 0.25rem;
  transform: translateZ(12px);
}
.tome-book-1 .cover-base-rune {
  color: #72511f;
}
.tome-book-2 .cover-base-rune {
  color: #94a3b8;
}

/* Tome Closed Spine with Raised Horizontal Ribs */
.tome-closed-spine {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 22px;
  border-radius: 4px 0 0 4px;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  padding: 1.5rem 0;
  box-sizing: border-box;
  transform: translateZ(10px);
}
.spine-rib {
  height: 5px;
  width: 100%;
}
.spine-vellum {
  background: linear-gradient(90deg, #8a6428 0%, #b48a3c 40%, #72511f 100%);
  box-shadow: inset -2px 0 4px rgba(0, 0, 0, 0.4);
}
.spine-vellum .spine-rib {
  background: linear-gradient(180deg, #d4af37 0%, #72511f 50%, #3a2512 100%);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}
.spine-grimoire {
  background: linear-gradient(90deg, #0f0a08 0%, #2e1c14 40%, #0d0907 100%);
  box-shadow: inset -2px 0 4px rgba(0, 0, 0, 0.7);
}
.spine-grimoire .spine-rib {
  background: linear-gradient(180deg, #64748b 0%, #334155 50%, #0f172a 100%);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
}

.tome-closed-pages {
  position: absolute;
  top: 6px;
  bottom: 6px;
  right: -10px;
  width: 12px;
  background: repeating-linear-gradient(
    90deg,
    #eed9b3,
    #eed9b3 1px,
    #d1b88e 2px,
    #c4a87c 3px
  );
  border-radius: 0 4px 4px 0;
  box-shadow: inset 1px 0 3px rgba(0, 0, 0, 0.5);
  transform: translateZ(-6px);
}

/* Ribbons Peeking Out from Closed Tomes */
.tome-ribbon {
  position: absolute;
  bottom: -22px;
  left: 45%;
  width: 22px;
  height: 35px;
  clip-path: polygon(0 0, 100% 0, 100% 80%, 50% 100%, 0 80%);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.6));
}
.ribbon-green {
  background: linear-gradient(180deg, #15803d 0%, #16a34a 100%);
  border-top: 1px solid #fde047;
}
.ribbon-crimson {
  background: linear-gradient(180deg, #991b1b 0%, #b91c1c 100%);
  border-top: 1px solid #fef08a;
}

/* Shelf Tome Details & Blurb Card */
.shelf-tome-details {
  background: rgba(20, 24, 38, 0.75);
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 8px;
  padding: 1.5rem;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
}

.shelf-book-badge {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--gold-accent);
}
.shelf-book-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: #ffffff;
}
.shelf-book-blurb {
  font-family: var(--font-story);
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-secondary);
  font-style: italic;
}
.shelf-book-stats {
  display: flex;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--aurora-teal);
  padding: 0.4rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.shelf-book-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}
.shelf-btn-open {
  flex: 1;
  padding: 0.65rem 1rem;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.3) 0%, rgba(180, 138, 60, 0.45) 100%);
  border: 1px solid var(--gold-accent);
  color: #ffffff;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}
.shelf-btn-open:hover {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.5) 0%, rgba(180, 138, 60, 0.7) 100%);
  box-shadow: 0 0 15px rgba(212, 175, 55, 0.4);
  transform: translateY(-1px);
}
.shelf-btn-resume {
  flex: 1;
  padding: 0.65rem 1rem;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.25) 0%, rgba(5, 150, 105, 0.4) 100%);
  border: 1px solid #10b981;
  color: #a7f3d0;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}
.shelf-btn-resume:hover {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.45) 0%, rgba(5, 150, 105, 0.65) 100%);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
  transform: translateY(-1px);
}

.shelf-footer-hint {
  text-align: center;
  max-width: 800px;
  margin: 1.5rem auto 2rem;
  font-family: var(--font-story);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* Shelf Mobile Responsiveness */
@media (max-width: 900px) {
  .shelf-tomes-container {
    flex-direction: column;
    align-items: center;
    gap: 3rem;
  }
  .shelf-header {
    flex-direction: column;
    gap: 1rem;
  }
}