:root {
  color-scheme: light;
  --bg: #ffffff;
  --table: #ffffff;
  --table-deep: #f8faf7;
  --paper: #f7f4eb;
  --paper-2: #efeadf;
  --ink: #221b16;
  --muted: rgba(86, 91, 82, 0.48);
  --line: rgba(128, 135, 118, 0.16);
  --gold: #c9d8c7;
  --shadow: rgba(142, 150, 132, 0.18);
  --page-shadow: rgba(142, 150, 132, 0.12);
}

* {
  box-sizing: border-box;
}

::selection {
  background: transparent;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 22%, rgba(139, 165, 213, 0.22), transparent 26%),
    linear-gradient(135deg, #f8fbff, #ffffff 48%, #f3f7ff);
  color: #6d7468;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

.album-app {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  width: 100vw;
  height: 100vh;
  min-height: 560px;
  padding: 22px clamp(16px, 4vw, 46px) 18px;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

.album-app::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 20% 18%, rgba(207, 216, 199, 0.22), transparent 24%),
    radial-gradient(circle at 82% 70%, rgba(225, 233, 221, 0.24), transparent 28%);
  opacity: 0.55;
}

.topbar,
.book-stage,
.book-controls,
.hint {
  position: relative;
  z-index: 2;
}

.topbar {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) 120px;
  align-items: center;
  gap: 16px;
}

.back-link,
.round-button,
.nav-button {
  border: 1px solid var(--line);
  color: #73806f;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  cursor: pointer;
}

.back-link {
  display: none;
  justify-self: start;
  padding: 9px 14px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 13px;
}

.title-block {
  display: none;
  min-width: 0;
  text-align: center;
}

.eyebrow {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.24em;
}

h1 {
  margin: 0;
  font-size: clamp(26px, 4vw, 46px);
  font-weight: 500;
  letter-spacing: 0;
}

.round-button {
  justify-self: end;
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 20px;
}

.back-link:hover,
.back-link:focus-visible,
.round-button:hover,
.round-button:focus-visible,
.nav-button:hover,
.nav-button:focus-visible {
  outline: 2px solid rgba(207, 168, 90, 0.72);
  outline-offset: 3px;
  background: rgba(242, 234, 223, 0.12);
}

.book-stage {
  display: grid;
  place-items: center;
  padding: clamp(14px, 2.2vw, 30px) 0;
  perspective: 2600px;
}

.book {
  --book-w: min(88vw, 1180px);
  --book-h: min(68vh, 720px);
  --card-paper: #fffef9;
  --card-edge: #d8d7cf;
  --turn-shadow: 0;
  --stack-push: 0px;
  position: relative;
  width: var(--book-w);
  height: var(--book-h);
  transform-style: preserve-3d;
  filter: drop-shadow(0 34px 32px rgba(87, 102, 130, 0.24));
  transition: transform 760ms cubic-bezier(.18,.82,.2,1);
  user-select: none;
  -webkit-user-select: none;
}

.book.is-closed {
  transform: translateX(-25%) rotateX(2deg) rotateZ(-1.2deg);
}

.book.is-closing {
  transform: translateX(-25%) rotateX(2deg) rotateZ(-1.2deg);
}

.book.is-opening,
.book.is-open {
  transform: translateX(0) rotateX(0) rotateZ(0);
}

.book-base {
  display: none;
  position: absolute;
  inset: 4.4% -5.2% -3.2%;
  border-radius: 24px;
  background: linear-gradient(90deg, rgba(111, 122, 146, 0.16), rgba(255, 255, 255, 0.34) 50%, rgba(111, 122, 146, 0.16));
  box-shadow:
    0 26px 64px rgba(98, 112, 142, 0.20),
    inset 0 1px rgba(255, 255, 255, 0.74);
  transform: translateZ(-50px);
  transition: inset 760ms cubic-bezier(.18,.82,.2,1), opacity 360ms ease;
}

.book.is-closed .book-base {
  inset: 4.4% 0 -3.2% 50%;
}

.page-stack {
  position: absolute;
  top: 1.6%;
  width: 50%;
  height: 96.8%;
  z-index: 4;
  pointer-events: none;
  transform-style: preserve-3d;
}

.page-stack-left {
  left: 0;
}

.page-stack-right {
  right: 0;
}

.stack-card {
  --offset: calc((var(--i) + 1) * 22px);
  --shrink: calc(var(--i) * 10px);
  position: absolute;
  top: var(--shrink);
  bottom: var(--shrink);
  left: 0;
  right: 0;
  overflow: hidden;
  border: 1px solid rgba(144, 151, 138, 0.34);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.82), transparent 42%),
    linear-gradient(145deg, var(--card-paper), #f4f2e9);
  box-shadow:
    0 12px 22px rgba(84, 100, 132, 0.12),
    inset 0 0 0 1px rgba(255, 255, 255, 0.82);
}

.stack-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(144, 151, 138, 0.12), transparent 22%, transparent 78%, rgba(144, 151, 138, 0.10));
  pointer-events: none;
}

.stack-card img {
  position: absolute;
  width: 58%;
  height: 64%;
  object-fit: cover;
  opacity: 0.84;
}

.page-stack-left .stack-card {
  border-radius: 22px 0 0 22px;
  transform: translateX(calc(-1 * var(--offset))) translateZ(calc(-1px * var(--i)));
}

.page-stack-left .stack-card img {
  left: 0;
  top: 18%;
}

.page-stack-right .stack-card {
  border-radius: 0 22px 22px 0;
  transform: translateX(var(--offset)) translateZ(calc(-1px * var(--i)));
}

.page-stack-right .stack-card img {
  right: 0;
  top: 18%;
}

.book.is-closed .page-stack,
.book.is-closing .page-stack {
  opacity: 0;
}

.book.is-turning-next .page-stack,
.book.is-turning-prev .page-stack {
  translate: var(--stack-push) 0;
}

.closed-cover {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 50;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: clamp(14px, 2.5vw, 26px);
  width: 50%;
  height: 100%;
  padding: clamp(26px, 5vw, 64px);
  border: 1px solid rgba(144, 151, 138, 0.34);
  border-radius: 0 22px 22px 0;
  color: transparent;
  text-align: center;
  cursor: pointer;
  transform-origin: left center;
  transform-style: preserve-3d;
  background: url("assets/album-cover.jpg") center / cover no-repeat;
  box-shadow: none;
  transition:
    transform 760ms cubic-bezier(.18,.82,.2,1),
    opacity 260ms ease 520ms,
    visibility 260ms ease 520ms;
}

.closed-cover::before {
  content: none;
  position: absolute;
  inset: 0;
  border: 0;
  background:
    radial-gradient(circle at 12% 22%, rgba(126, 132, 118, 0.030), transparent 26%),
    radial-gradient(circle at 68% 18%, rgba(126, 132, 118, 0.024), transparent 22%),
    radial-gradient(circle at 48% 72%, rgba(126, 132, 118, 0.028), transparent 30%);
  opacity: 0.72;
  pointer-events: none;
}

.closed-cover::after {
  content: none;
  position: absolute;
  inset: 0 auto 0 0;
  width: 12%;
  background: linear-gradient(90deg, rgba(150, 138, 116, 0.16), transparent);
  pointer-events: none;
}

.closed-cover:hover,
.closed-cover:focus-visible {
  outline: 2px solid rgba(207, 168, 90, 0.74);
  outline-offset: 5px;
}

.book.is-opening .closed-cover,
.book.is-closing .closed-cover,
.book.is-open .closed-cover {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: rotateY(-168deg);
}

.book.is-opening .closed-cover,
.book.is-closing .closed-cover {
  transition: none;
}

.book.is-cover-settling .closed-cover {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: none;
}

.closed-cover-kicker,
.closed-cover-note {
  position: relative;
  z-index: 1;
  color: rgba(248, 239, 225, 0.72);
  font-size: clamp(11px, 1.4vw, 13px);
  letter-spacing: 0.24em;
}

.closed-cover-title {
  position: relative;
  z-index: 1;
  font-size: clamp(42px, 7vw, 86px);
  font-weight: 500;
  letter-spacing: 0;
}

.closed-cover-line {
  position: relative;
  z-index: 1;
  width: min(180px, 46%);
  height: 1px;
  background: rgba(207, 168, 90, 0.62);
}

.book.is-closed .page,
.book.is-closed .book-spine,
.book.is-closed .turn-sheet {
  opacity: 0;
  pointer-events: none;
}

.book.is-closing .page.page-left {
  opacity: 0;
  pointer-events: none;
}

.book.is-opening .page,
.book.is-closing .page,
.book.is-open .page,
.book.is-opening .book-spine,
.book.is-closing .book-spine,
.book.is-open .book-spine {
  opacity: 1;
}

.page,
.turn-sheet {
  position: absolute;
  top: 0;
  width: 50%;
  height: 100%;
  transform-style: preserve-3d;
}

.page {
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 18%, rgba(128, 134, 119, 0.030), transparent 28%),
    radial-gradient(circle at 78% 70%, rgba(128, 134, 119, 0.024), transparent 30%),
    radial-gradient(circle at 46% 45%, rgba(128, 134, 119, 0.018), transparent 38%),
    linear-gradient(135deg, var(--card-paper), #f5f3ea);
  box-shadow:
    inset 0 0 0 1px rgba(144, 151, 138, 0.22),
    inset 0 0 28px rgba(150, 138, 116, 0.035),
    0 10px 20px rgba(87, 102, 130, 0.10);
}

.page-left {
  left: 0;
  z-index: 10;
  border-radius: 22px 0 0 22px;
}

.page-right {
  right: 0;
  z-index: 10;
  border-radius: 0 22px 22px 0;
}

.page-left::after,
.page-right::after,
.turn-face::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: none;
}

.page-left::before {
  content: "";
  display: none;
  position: absolute;
  inset: 0 0 0 auto;
  width: 17%;
  background: linear-gradient(90deg, transparent, rgba(42, 28, 18, 0.18));
  pointer-events: none;
  z-index: 3;
}

.page-right::before {
  content: "";
  display: none;
  position: absolute;
  inset: 0 auto 0 0;
  width: 17%;
  background: linear-gradient(90deg, rgba(42, 28, 18, 0.18), transparent);
  pointer-events: none;
  z-index: 3;
}

.book-spine {
  display: none;
  position: absolute;
  top: 1.5%;
  left: 50%;
  z-index: 14;
  width: 22px;
  height: 96%;
  transform: translateX(-50%) translateZ(18px);
  border-radius: 999px;
  background:
    linear-gradient(90deg, rgba(112, 123, 147, 0.12), rgba(255, 255, 255, 0.56), rgba(112, 123, 147, 0.14));
  box-shadow: 0 0 22px rgba(87, 102, 130, 0.16);
  pointer-events: none;
  transition: opacity 360ms ease 180ms;
}

.mag-page {
  position: relative;
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  gap: 0;
  height: 100%;
  padding: clamp(18px, 3vw, 38px);
}

.mag-header,
.mag-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: rgba(34, 27, 22, 0.62);
  font-size: clamp(11px, 1.35vw, 13px);
  letter-spacing: 0.08em;
}

.mag-grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
  min-height: 0;
  align-items: center;
  justify-items: center;
}

.mag-shot {
  position: relative;
  min-width: 0;
  min-height: 0;
  margin: 0;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.mag-shot img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: contain;
  object-position: center center;
  background: transparent;
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
}

.mag-shot figcaption {
  display: none;
  height: 22px;
  padding-top: 7px;
  overflow: hidden;
  color: rgba(34, 27, 22, 0.68);
  font-size: clamp(11px, 1.22vw, 12px);
  letter-spacing: 0.03em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.layout-solo-center .mag-grid,
.layout-solo-wide .mag-grid,
.layout-solo-low .mag-grid {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
}

.layout-solo-center .mag-shot {
  place-self: center;
  width: 88%;
  height: 88%;
}

.layout-solo-wide .mag-shot {
  place-self: center;
  width: 88%;
  height: 88%;
}

.layout-solo-low .mag-shot {
  place-self: center;
  width: 88%;
  height: 88%;
}

.layout-duo-wide .mag-grid {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: 1fr;
}

.layout-duo-wide .mag-shot {
  width: 100%;
  height: 88%;
}

.layout-duo-asym .mag-grid {
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  grid-template-rows: 1fr;
}

.layout-duo-asym .mag-shot-main {
  align-self: start;
  width: 100%;
  height: 82%;
}

.layout-duo-asym .mag-shot-second {
  align-self: end;
  width: 100%;
  height: 82%;
  transform: translateY(8%);
}

.layout-duo-reverse .mag-grid {
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  grid-template-rows: 1fr;
}

.layout-duo-reverse .mag-shot-main {
  align-self: end;
  width: 100%;
  height: 82%;
  transform: translateY(6%);
}

.layout-duo-reverse .mag-shot-second {
  align-self: start;
  width: 100%;
  height: 82%;
}

.layout-duo-lift .mag-grid {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: 1fr;
}

.layout-duo-lift .mag-shot-main {
  align-self: start;
  width: 96%;
  height: 78%;
}

.layout-duo-lift .mag-shot-second {
  align-self: end;
  width: 96%;
  height: 78%;
}

.layout-duo-gallery .mag-grid {
  grid-template-columns: minmax(0, 0.84fr) minmax(0, 1.16fr);
  grid-template-rows: 1fr;
  gap: clamp(20px, 3vw, 34px);
}

.layout-duo-gallery .mag-shot-main {
  justify-self: end;
  width: 86%;
  height: 76%;
}

.layout-duo-gallery .mag-shot-second {
  justify-self: start;
  width: 100%;
  height: 90%;
}

.layout-duo-quiet .mag-grid {
  grid-template-columns: minmax(0, 1.14fr) minmax(0, 0.86fr);
  grid-template-rows: 1fr;
  gap: clamp(22px, 3.4vw, 42px);
}

.layout-duo-quiet .mag-shot-main {
  justify-self: end;
  width: 94%;
  height: 88%;
}

.layout-duo-quiet .mag-shot-second {
  justify-self: start;
  align-self: center;
  width: 88%;
  height: 72%;
}


.cover-content,
.end-content,
.blank-content {
  display: grid;
  place-items: center;
  height: 100%;
  padding: clamp(24px, 4vw, 52px);
  text-align: center;
}

.cover-panel {
  display: grid;
  gap: 18px;
  align-content: center;
  width: 78%;
  height: 72%;
  padding: 34px;
  border: 1px solid rgba(207, 168, 90, 0.46);
  color: #f8efe1;
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.12), transparent 36%),
    linear-gradient(145deg, #241713, #5a3326 54%, #21120f);
  box-shadow: inset 0 0 0 8px rgba(255, 255, 255, 0.035);
}

.cover-panel h2,
.end-content h2 {
  margin: 0;
  font-size: clamp(30px, 5.8vw, 72px);
  font-weight: 500;
  letter-spacing: 0;
}

.cover-panel p,
.end-content p {
  margin: 0;
  color: rgba(248, 239, 225, 0.72);
}

.end-content {
  background:
    radial-gradient(circle at 20% 18%, rgba(128, 134, 119, 0.030), transparent 28%),
    radial-gradient(circle at 78% 70%, rgba(128, 134, 119, 0.024), transparent 30%),
    linear-gradient(135deg, #fbf8f0, #f3eddf);
}

.blank-content {
  color: rgba(34, 27, 22, 0.34);
  font-size: clamp(16px, 2.4vw, 24px);
}

.turn-sheet {
  z-index: 24;
  display: none;
  pointer-events: none;
}

.turn-sheet.is-active {
  display: block;
}

.turn-sheet.is-cover-open {
  z-index: 56;
}

.turn-sheet.is-cover-close {
  z-index: 58;
}

.turn-sheet.is-next {
  left: 50%;
  transform-origin: left center;
}

.turn-sheet.is-prev {
  left: 0;
  transform-origin: right center;
}

.turn-face {
  position: absolute;
  inset: 0;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 18%, rgba(128, 134, 119, 0.030), transparent 28%),
    radial-gradient(circle at 78% 70%, rgba(128, 134, 119, 0.024), transparent 30%),
    linear-gradient(135deg, var(--card-paper), #f5f3ea);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  box-shadow:
    inset 0 0 0 1px rgba(64, 43, 27, 0.16),
    0 18px 38px rgba(87, 102, 130, 0.18);
  transform-style: preserve-3d;
}

.turn-front {
  transform: translateZ(2px);
}

.cover-turn-image {
  position: absolute;
  inset: 0;
  background: url("assets/album-cover.jpg") center / cover no-repeat;
}

.turn-sheet.is-cover-close .turn-face {
  box-shadow: none;
}

.turn-sheet.is-cover-close .turn-front {
  background:
    radial-gradient(circle at 24% 20%, rgba(128, 134, 119, 0.020), transparent 28%),
    linear-gradient(135deg, var(--card-paper), #f6f4ed);
}

.turn-back {
  display: block;
  background:
    radial-gradient(circle at 24% 20%, rgba(128, 134, 119, 0.020), transparent 28%),
    linear-gradient(135deg, #fffef9, #f6f4ed);
  transform: rotateY(180deg) translateZ(2px);
}

.turn-sheet.is-gliding .turn-front,
.turn-sheet.is-gliding .turn-back {
  box-shadow: inset 0 0 0 1px rgba(64, 43, 27, 0.16);
}

.book.is-turning-next .page-left::after {
  background: none;
}

.book.is-turning-prev .page-right::after {
  background: none;
}

.turn-sheet.is-next .turn-front {
  border-radius: 0 22px 22px 0;
}

.turn-sheet.is-next .turn-back {
  border-radius: 22px 0 0 22px;
}

.turn-sheet.is-prev .turn-front {
  border-radius: 22px 0 0 22px;
}

.turn-sheet.is-prev .turn-back {
  border-radius: 0 22px 22px 0;
}

.book-controls {
  display: grid;
  grid-template-columns: 54px minmax(0, 420px) 54px;
  justify-content: center;
  align-items: center;
  gap: 14px;
}

.nav-button {
  width: 54px;
  height: 44px;
  border-radius: 999px;
  font-size: 32px;
  line-height: 1;
}

.nav-button:disabled {
  cursor: default;
  opacity: 0.38;
}

.page-status {
  display: grid;
  gap: 9px;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.page-range {
  width: 100%;
  accent-color: var(--gold);
}

.hint {
  display: none;
  margin: 12px 0 0;
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

@media (max-width: 760px) {
  .album-app {
    min-height: 100vh;
    padding: 14px 12px 12px;
  }

  .topbar {
    grid-template-columns: 1fr auto;
  }

  .back-link {
    display: none;
  }

  .title-block {
    text-align: left;
  }

  .book {
    --book-w: min(96vw, 560px);
    --book-h: min(64vh, 600px);
  }

  .book-spine {
    width: 10px;
  }

  .page-content {
    padding: 14px;
    gap: 9px;
  }

  .page-kicker {
    display: none;
  }

  .page-caption,
  .page-number {
    font-size: 11px;
  }

  .photo-frame {
    box-shadow: none;
    padding: 7px;
  }

  .cover-panel {
    width: 86%;
    height: 76%;
    padding: 18px;
  }

  .book-controls {
    grid-template-columns: 46px minmax(0, 1fr) 46px;
    gap: 10px;
  }

  .nav-button {
    width: 46px;
    height: 40px;
  }
}