/* Memory Book — retro scrapbook flip UI */

.mb-page {
  --mb-ink: #3a2a24;
  --mb-rose: #c45c6a;
  --mb-gold: #b08d57;
  --mb-paper: #f3e6d4;
  --mb-paper-2: #ead7c0;
  --mb-desk: #d9c4ae;
  min-height: 100vh;
  color: var(--mb-ink);
  font-family: "Sora", system-ui, sans-serif;
  background-color: #cbb59a;
  background-image:
    radial-gradient(ellipse at 15% 10%, rgba(255, 230, 210, 0.55), transparent 45%),
    radial-gradient(ellipse at 85% 90%, rgba(196, 92, 106, 0.18), transparent 42%),
    radial-gradient(rgba(120, 80, 50, 0.07) 1.1px, transparent 1.2px),
    linear-gradient(165deg, #e2d0b8 0%, #d4bea4 45%, #c9b092 100%);
  background-size: auto, auto, 18px 18px, auto;
}

.mb-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1rem;
  background: rgba(243, 230, 212, 0.78);
  border-bottom: 1px solid rgba(90, 60, 40, 0.12);
  backdrop-filter: blur(8px);
}

.mb-toolbar a,
.mb-toolbar button {
  font-family: inherit;
  cursor: pointer;
}

.mb-toolbar .mb-link {
  color: var(--mb-ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.88rem;
}

.mb-stage {
  display: grid;
  place-items: center;
  padding: 1.5rem 0.85rem 2.75rem;
  gap: 1.1rem;
}

.mb-book-wrap {
  width: min(100%, 430px);
  perspective: 1800px;
  filter: drop-shadow(0 22px 36px rgba(70, 40, 30, 0.28));
}

.mb-book {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: 4px 16px 16px 4px;
  background:
    linear-gradient(90deg, #6b3f36 0 10px, transparent 10px),
    linear-gradient(145deg, #8b5348, #5c342e);
  box-shadow:
    inset 8px 0 14px rgba(0, 0, 0, 0.22),
    inset -1px 0 0 rgba(255, 220, 180, 0.12),
    0 0 0 1px rgba(60, 30, 20, 0.35);
  overflow: hidden;
  transform-style: preserve-3d;
}

.mb-book::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 14px;
  z-index: 5;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255, 220, 180, 0.08) 0 2px,
      transparent 2px 7px
    ),
    linear-gradient(90deg, rgba(0, 0, 0, 0.28), transparent);
}

.mb-spread {
  position: absolute;
  inset: 8px 10px 10px 18px;
  display: none;
  border-radius: 2px 10px 10px 2px;
  background-color: var(--mb-paper);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(255, 255, 255, 0.45), transparent 50%),
    radial-gradient(ellipse at 90% 100%, rgba(180, 120, 80, 0.1), transparent 45%),
    linear-gradient(125deg, var(--mb-paper) 0%, var(--mb-paper-2) 100%);
  color: var(--mb-ink);
  box-shadow:
    inset 0 0 0 1px rgba(120, 80, 50, 0.1),
    inset 12px 0 24px rgba(120, 80, 40, 0.05);
  overflow: hidden;
}

.mb-spread.is-on {
  display: grid;
  animation: mb-turn 0.5s cubic-bezier(0.22, 0.8, 0.28, 1);
}

@keyframes mb-turn {
  from {
    opacity: 0.25;
    transform: rotateY(-22deg) translateX(-6px);
    transform-origin: left center;
  }
  to {
    opacity: 1;
    transform: rotateY(0) translateX(0);
    transform-origin: left center;
  }
}

.mb-cover {
  display: grid;
  place-content: center;
  text-align: center;
  gap: 0.45rem;
  padding: 1.6rem 1.35rem;
  position: relative;
}

.mb-cover::before,
.mb-cover::after {
  content: "❧";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(176, 141, 87, 0.55);
  font-size: 1rem;
  line-height: 1;
}

.mb-cover::before {
  top: 1.1rem;
}

.mb-cover::after {
  bottom: 1.1rem;
  transform: translateX(-50%) rotate(180deg);
}

.mb-cover-kicker {
  margin: 0.85rem 0 0;
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 800;
  color: var(--mb-gold);
}

.mb-cover h1 {
  margin: 0;
  font-family: "Cormorant Garamond", "Fraunces", Georgia, serif;
  font-size: clamp(1.65rem, 6vw, 2.2rem);
  font-weight: 600;
  line-height: 1.12;
  color: var(--mb-ink);
}

.mb-cover-names {
  margin: 0.1rem 0 0;
  font-family: "Great Vibes", cursive;
  font-size: clamp(1.45rem, 5vw, 1.95rem);
  color: var(--mb-rose);
}

.mb-cover-ded {
  margin: 0.7rem auto 0;
  max-width: 17rem;
  font-size: 0.9rem;
  line-height: 1.5;
  color: rgba(58, 42, 36, 0.72);
  font-style: italic;
}

.mb-cover-hint {
  margin: 1.15rem 0 0.85rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(58, 42, 36, 0.42);
}

.mb-leaf {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  height: 100%;
  min-height: 0;
}

.mb-leaf-photo {
  position: relative;
  min-height: 0;
  margin: 1rem 1rem 0;
  border-radius: 4px;
  overflow: hidden;
  background: #dcc9b4;
  box-shadow:
    0 0 0 6px rgba(255, 250, 240, 0.75),
    0 0 0 7px rgba(120, 80, 50, 0.12),
    0 8px 18px rgba(70, 40, 30, 0.12);
}

.mb-leaf-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: sepia(0.08) contrast(1.02);
}

.mb-leaf-photo.is-empty {
  display: grid;
  place-items: center;
  color: rgba(58, 42, 36, 0.35);
  font-size: 0.85rem;
  font-weight: 700;
}

.mb-leaf-meta {
  padding: 0.85rem 1.05rem 1.05rem;
  text-align: center;
}

.mb-leaf-meta strong {
  display: block;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  color: var(--mb-ink);
}

.mb-leaf-meta p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.45;
  color: rgba(58, 42, 36, 0.72);
  white-space: pre-wrap;
}

.mb-leaf-num {
  margin-top: 0.5rem;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(58, 42, 36, 0.38);
}

.mb-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: min(100%, 430px);
}

.mb-nav {
  min-width: 3.1rem;
  min-height: 2.85rem;
  border: 1px solid rgba(90, 60, 40, 0.18);
  border-radius: 999px;
  background: rgba(243, 230, 212, 0.9);
  color: var(--mb-ink);
  font-size: 1.2rem;
  font-weight: 800;
  box-shadow: 0 6px 14px rgba(70, 40, 30, 0.1);
}

.mb-nav:hover:not(:disabled) {
  background: #fff8ef;
}

.mb-nav:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.mb-progress {
  font-size: 0.82rem;
  font-weight: 700;
  color: rgba(58, 42, 36, 0.7);
  min-width: 5rem;
  text-align: center;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: rgba(243, 230, 212, 0.72);
  border: 1px solid rgba(90, 60, 40, 0.1);
}

.mb-share {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  width: min(100%, 430px);
}

.mb-share input {
  flex: 1 1 12rem;
  min-height: 2.65rem;
  border-radius: 14px;
  border: 1px solid rgba(90, 60, 40, 0.16);
  background: rgba(243, 230, 212, 0.88);
  color: var(--mb-ink);
  padding: 0.5rem 0.8rem;
  font-size: 0.8rem;
}

.mb-share button,
.mb-share .btn {
  min-height: 2.65rem;
  border-radius: 14px;
  border: 0;
  padding: 0.5rem 0.95rem;
  font-weight: 800;
  background: linear-gradient(180deg, #d47886, #c45c6a);
  color: #fff;
  box-shadow: 0 8px 16px rgba(196, 92, 106, 0.25);
}

.mb-share button {
  background: linear-gradient(180deg, #d47886, #c45c6a);
}

@media (max-width: 480px) {
  .mb-book-wrap {
    width: min(100%, 360px);
  }

  .mb-leaf-photo {
    margin: 0.75rem 0.75rem 0;
    box-shadow:
      0 0 0 5px rgba(255, 250, 240, 0.75),
      0 0 0 6px rgba(120, 80, 50, 0.12),
      0 6px 14px rgba(70, 40, 30, 0.12);
  }

  .mb-stage {
    padding-top: 1.1rem;
  }
}