:root {
  --paper: #f4ecdc;
  --paper-deep: #ece1cb;
  --ink: #2c221b;
  --ink-soft: #4a3c30;
  --maroon: #7a2b28;
  --gold: #a9782f;
  --line: rgba(44, 34, 27, 0.18);
  --desk: #241812;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  overscroll-behavior: none;
}

body {
  margin: 0;
  background: var(--desk);
  color: var(--ink);
  font-family: 'Cormorant Garamond', serif;
  font-size: 20px;
  line-height: 1.7;
  overflow: hidden;
}

/* subtle paper grain */
#grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 500;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

.page {
  position: relative;
  min-height: 100vh;
  padding: 8vh 8vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* COVER — closed hardcover book, leather + gold foil */
.cover {
  background:
    radial-gradient(ellipse at 50% 25%, rgba(169, 120, 47, 0.18), transparent 55%),
    radial-gradient(ellipse at 50% 100%, rgba(0,0,0,0.4), transparent 60%),
    linear-gradient(160deg, #5a1f1c 0%, #3c1210 55%, #2a0c0b 100%);
  align-items: center;
  text-align: center;
  position: relative;
  height: 100vh;
}
.cover-frame {
  border: 2px solid rgba(169, 120, 47, 0.55);
  padding: 6vh 6vw;
  max-width: 640px;
  position: relative;
  box-shadow: inset 0 0 0 6px rgba(169,120,47,0.12), 0 30px 70px rgba(0,0,0,0.5);
  background: rgba(0,0,0,0.08);
}
.cover-frame::before, .cover-frame::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  border: 2px solid var(--gold);
}
.cover-frame::before { top: -2px; left: -2px; border-right: none; border-bottom: none; }
.cover-frame::after { bottom: -2px; right: -2px; border-left: none; border-top: none; }
.kicker {
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.62rem;
  color: var(--gold);
  margin-bottom: 1.4rem;
  font-family: 'Cormorant Garamond', serif;
}
.cover-title {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-style: italic;
  font-size: clamp(3.2rem, 9vw, 6.5rem);
  margin: 0 0 0.4rem;
  color: #e9d3a3;
  letter-spacing: 0.01em;
  text-shadow: 0 2px 12px rgba(169,120,47,0.35);
}
.cover-sub {
  font-size: 1.25rem;
  color: #d9c6a8;
  margin: 0 0 2.2rem;
  font-style: italic;
}
.cover-byline {
  font-size: 0.95rem;
  color: #c9b494;
  opacity: 0.8;
  margin-bottom: 2.6rem;
}
.open-book {
  background: var(--gold);
  color: #2a0c0b;
  border: none;
  padding: 0.9rem 2.2rem;
  font-family: 'Cormorant Garamond', serif;
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  border-radius: 2px;
  transition: transform 0.25s ease, background 0.25s ease;
}
.open-book:hover { background: #c69240; transform: translateY(-2px); }
.arrow { display: inline-block; transition: transform 0.25s ease; }
.open-book:hover .arrow { transform: translateX(4px); }

.cover-ornament {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  color: var(--gold);
  font-size: 1.4rem;
  opacity: 0.7;
}
.cover-ornament.top { top: 6vh; }
.cover-ornament.bottom { bottom: 6vh; }

/* ===== OPEN BOOK ===== */
#book[hidden] {
  display: none;
}

#book {
  height: 100vh;
  width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 50% 15%, rgba(255,255,255,0.05), transparent 55%),
    radial-gradient(ellipse at 50% 100%, rgba(0,0,0,0.5), transparent 60%),
    var(--desk);
}

#book-shell {
  position: relative;
  width: min(92vw, 960px);
  height: min(86vh, 700px);
  background: var(--paper);
  border-radius: 3px;
  box-shadow:
    0 40px 80px rgba(0,0,0,0.55),
    7px 8px 0 var(--paper-deep),
    9px 10px 0 rgba(44,34,27,0.18),
    15px 15px 0 var(--paper-deep),
    17px 17px 0 rgba(44,34,27,0.14),
    23px 21px 0 var(--paper-deep);
}

/* binding / spine shadow along the left edge */
#book-shell::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 64px;
  background: linear-gradient(to right, rgba(30, 20, 14, 0.32), rgba(30, 20, 14, 0) 100%);
  z-index: 45;
  pointer-events: none;
  border-radius: 3px 0 0 3px;
}

#page-stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: 3px;
  perspective: 2400px;
}

.book-page {
  position: absolute;
  inset: 0;
  height: 100%;
  width: 100%;
  padding: 6.5vh 6.5vw 5vh 8vw;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  overflow-y: auto;
  background: var(--paper);
  transform-origin: left center;
  backface-visibility: hidden;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: rotateY(0deg);
  transition: transform 0.7s cubic-bezier(0.6, 0.05, 0.2, 1), opacity 0.55s ease;
}

/* curl shadow that appears while a page is turning */
.book-page::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(20, 12, 8, 0.4), rgba(20, 12, 8, 0) 45%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
.book-page.leaving-back::after,
.book-page.entering-from-front::after {
  opacity: 1;
}

.book-page.current {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 10;
  transform: rotateY(0deg);
}
.book-page.leaving-back {
  opacity: 0.85;
  visibility: visible;
  transform: rotateY(-100deg);
  z-index: 6;
}
.book-page.entering-from-front {
  opacity: 0.85;
  visibility: visible;
  transform: rotateY(100deg);
  z-index: 6;
}

.book-page.chapter { max-width: 640px; margin: 0; width: 100%; align-items: flex-start; }

.chapter-label {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.62rem;
  color: var(--gold);
  margin-bottom: 0.5rem;
  flex-shrink: 0;
}
.chapter-title {
  font-family: 'Playfair Display', serif;
  font-weight: 600;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  color: var(--maroon);
  margin: 0 0 1.4rem;
  position: relative;
  padding-bottom: 0.8rem;
  flex-shrink: 0;
}
.chapter-title::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 54px; height: 2px;
  background: var(--gold);
}
.chapter-body { overflow-y: visible; }
.chapter-body p { margin: 0 0 1.05rem; color: var(--ink-soft); font-size: 0.98rem; }
.drop-cap::first-letter {
  font-family: 'Playfair Display', serif;
  font-size: 3rem;
  float: left;
  line-height: 0.8;
  padding-right: 0.45rem;
  padding-top: 0.25rem;
  color: var(--maroon);
  font-weight: 700;
}
.edit-note {
  margin-top: 1.4rem;
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-size: 0.85rem;
  color: var(--gold);
  border-left: 2px solid var(--gold);
  padding-left: 0.8rem;
  opacity: 0.85;
}

.memory-list { padding-left: 1.1rem; color: var(--ink-soft); font-size: 0.98rem; }
.memory-list li { margin-bottom: 0.6rem; }

/* TIMELINE */
.timeline {
  margin: 1.6rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 1.1rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem 2.2rem;
}
.timeline-item { display: flex; flex-direction: column; }
.timeline-date {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  color: var(--maroon);
  font-size: 1.02rem;
}
.timeline-label { font-size: 0.85rem; color: var(--ink-soft); }

/* PHOTOS */
.book-page.photo-interlude {
  align-items: center;
  justify-content: center;
  background: var(--paper-deep);
}
.photo-interlude figure {
  margin: 0;
  max-width: 520px;
  width: 100%;
  text-align: center;
}
.photo-interlude img {
  width: 100%;
  max-height: 52vh;
  object-fit: cover;
  border: 8px solid var(--paper);
  outline: 1px solid var(--line);
  box-shadow: 0 16px 34px rgba(44, 34, 27, 0.25);
  border-radius: 2px;
}
.photo-interlude figcaption {
  margin-top: 0.9rem;
  font-style: italic;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* EPILOGUE */
.epilogue { text-align: left; }
#countdown-line {
  font-style: italic;
  color: var(--maroon);
  font-size: 1.15rem;
}
.signature {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 1.4rem;
  color: var(--maroon);
  margin-top: 1.6rem;
}
.the-end {
  margin-top: 2rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.78rem;
  color: var(--gold);
}
.the-end-heart { color: var(--maroon); margin-left: 0.4rem; }

/* PAGE TAP ZONES (invisible click regions over the book to turn pages) */
.page-tap {
  position: absolute;
  top: 64px;
  bottom: 0;
  width: 16%;
  background: transparent;
  border: none;
  z-index: 20;
  cursor: pointer;
}
.page-tap-left { left: 0; cursor: w-resize; }
.page-tap-right { right: 0; cursor: e-resize; }

/* BOOK NAV BAR */
.book-nav {
  position: fixed;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%);
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 1.4rem;
  background: rgba(244, 236, 220, 0.94);
  border: 1px solid var(--line);
  padding: 0.45rem 1rem;
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  backdrop-filter: blur(4px);
}
.nav-btn {
  background: none;
  border: none;
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.98rem;
  color: var(--maroon);
  cursor: pointer;
  letter-spacing: 0.04em;
  padding: 0.3rem 0.6rem;
}
.nav-btn:disabled { opacity: 0.3; cursor: default; }
.nav-btn:hover:not(:disabled) { text-decoration: underline; }
.page-indicator {
  font-size: 0.88rem;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  min-width: 3.4rem;
  text-align: center;
}

/* MUSIC TOGGLE */
#music-toggle {
  position: fixed;
  top: 1.4rem;
  right: 1.4rem;
  z-index: 600;
  background: rgba(244, 236, 220, 0.95);
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.9rem;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
#music-toggle span { opacity: 0.8; }
#music-toggle.playing { background: var(--maroon); color: var(--paper); }

@media (max-width: 640px) {
  body { font-size: 16px; }
  #book-shell {
    width: 96vw;
    height: 82vh;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5), 5px 6px 0 var(--paper-deep), 8px 9px 0 rgba(44,34,27,0.16);
  }
  .book-page { padding: 5.5vh 5.5vw 6vh 6.5vw; }
  .page-tap { width: 12%; top: 50px; }
}