/* Exact approved Vault composition. No selectors affect another page or game. */
body.vault-redesign { background: #08090b; color: #eadbc7; }
body.vault-redesign #view { width: 100%; max-width: none; margin: 0; padding: 0; }
body.vault-redesign #observer-margin { display: none !important; }
.vault-fidelity {
  position: relative;
  isolation: isolate;
  min-height: calc(100svh - 82px);
  padding: 66px max(24px, 5vw) 40px;
  background: #100e0e url('assets/vault/fidelity/closed-library.webp') center top / cover no-repeat;
  font-family: var(--serif, Georgia, serif);
}
.vault-fidelity .vault-heading { max-width: 920px; margin: 0 auto 44px; text-align: center; }
.vault-fidelity .vault-heading h1 {
  margin: 0 0 10px; color: #f5ebd8; font: 400 clamp(36px, 4.3vw, 64px)/1.12 var(--serif, Georgia, serif);
  text-wrap: balance;
}
.vault-fidelity .vault-heading p { max-width: 680px; margin: 10px auto 0; color: #ead5b4; font: 23px/1.45 var(--serif, Georgia, serif); }
.vault-fidelity .vault-star { display: flex; align-items: center; justify-content: center; gap: 7px; color: #d5b37b; font: 25px/1 var(--serif, Georgia, serif); }
.vault-fidelity .vault-star::before, .vault-fidelity .vault-star::after { content: ''; width: 112px; height: 1px; background: linear-gradient(90deg, transparent, currentColor); }
.vault-fidelity .vault-star::after { transform: rotate(180deg); }
.vault-fidelity .vault-envelopes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px; width: min(100%, 960px); margin: 0 auto; }
.vault-fidelity .vault-envelope { min-width: 0; margin: 0; padding: 0; border: 0; background: transparent; color: #f5e8d4; text-align: center; font: 21px/1.35 var(--serif, Georgia, serif); }
.vault-fidelity button.vault-envelope { cursor: pointer; }
.vault-fidelity .vault-envelope img {
  display: block; width: 100%; height: auto; aspect-ratio: 384 / 244; object-fit: contain;
  filter: drop-shadow(0 15px 12px #0009); transition: transform .25s;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 97%, transparent), linear-gradient(0deg, transparent, #000 3%, #000 98%, transparent);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(90deg, transparent, #000 7%, #000 97%, transparent), linear-gradient(0deg, transparent, #000 3%, #000 98%, transparent);
  mask-composite: intersect;
}
.vault-fidelity button.vault-envelope:hover img { transform: translateY(-5px); }
.vault-fidelity .vault-envelope:focus-visible { outline: 2px solid #e5c898; outline-offset: 8px; }
.vault-fidelity .vault-envelope > .vault-star { margin-top: 2px; font-size: 19px; }
.vault-fidelity .vault-envelope > .vault-star::before, .vault-fidelity .vault-envelope > .vault-star::after { width: 32%; }
.vault-fidelity .vault-envelope strong { display: block; margin: 4px 0; font-size: clamp(25px, 2.65vw, 36px); font-weight: 400; line-height: 1.15; }
.vault-fidelity .vault-envelope > span:not(.vault-star), .vault-fidelity .vault-envelope small { display: block; }
.vault-fidelity .vault-envelope small { margin-top: 8px; color: #d1b991; font-size: 16px; }
.vault-fidelity .vault-actions { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 25px; margin-top: 36px; }
.vault-fidelity .vault-back { display: inline-block; width: max-content; max-width: 100%; margin: 0; padding: 9px 0; border: 0; background: none; color: #e9d5b4; font: 23px/1.3 var(--serif, Georgia, serif); text-decoration: none; cursor: pointer; }
.vault-fidelity .vault-actions .vault-back { border-bottom: 1px solid #bca27588; font-size: 20px; }
.vault-fidelity .vault-gallery-back { display: none; }

/* The folder, paper edges, and decoration are separate approved artwork layers.
   Only the layout grows; material grain, corners, envelope and flowers retain scale. */
.vault-fidelity.vault-reading { padding: 35px max(20px, 4vw) 60px; background-attachment: fixed; }
.vault-fidelity .vault-folder { position: relative; isolation: isolate; width: min(100%, 1060px); min-width: 0; margin: 0 auto; padding: 14px 24px 28px; }
.vault-fidelity .vault-folder::before { content: ''; position: absolute; inset: 0; z-index: -2; border: 64px solid transparent; border-image: url('assets/vault/fidelity/folder-frame.webp') 140 / 64px / 0 stretch; pointer-events: none; }
.vault-fidelity .vault-folder-art { position: absolute; top: 74px; left: 18px; width: 54%; aspect-ratio: 1024 / 1536; background: url('assets/vault/fidelity/open-count-decoration.webp') left top / 100% auto no-repeat; z-index: -1; pointer-events: none; }
.vault-fidelity.vault-reading--sunset .vault-folder-art { background-image: url('assets/vault/fidelity/open-sunset-decoration.webp'); }
.vault-fidelity .vault-letter-leaf { position: relative; min-width: 0; margin-left: 21%; }
/* Original brass clasps stay fixed-size as the letter grows. */
.vault-fidelity .vault-letter-leaf::before, .vault-fidelity .vault-letter-leaf::after { content: ''; position: absolute; z-index: 2; top: 330px; width: 26px; height: 80px; background: url('assets/vault/fidelity/folder-hardware.webp') no-repeat; background-size: 565.5px 695.5px; pointer-events: none; }
.vault-fidelity .vault-letter-leaf::before { left: -11px; background-position: -9px -288px; }
.vault-fidelity .vault-letter-leaf::after { right: -9px; background-position: -531px -288px; }
.vault-fidelity .vault-letter-leaf > .vault-back { margin: 0 0 4px 32px; min-height: 44px; }
.vault-fidelity .vault-letter-leaf > .vault-back span { margin-right: 6px; }
.vault-fidelity .vault-paper { position: relative; isolation: isolate; box-sizing: border-box; width: 100%; min-width: 0; margin: 0; padding: 34px clamp(32px, 4.3vw, 66px) 40px; border: 0; background: none; color: #211a13; box-shadow: none; overflow-wrap: anywhere; }
.vault-fidelity .vault-paper::before { content: ''; position: absolute; inset: 0; z-index: -2; border: 64px solid transparent; border-image: url('assets/vault/fidelity/torn-paper.webp') 160 fill / 64px / 0 stretch; pointer-events: none; }
.vault-fidelity .vault-paper-heading { margin: 0 0 26px; text-align: center; }
.vault-fidelity .vault-paper .vault-book-title { display: block; margin: 0 0 6px; color: #211a13; font: 400 clamp(21px, 2vw, 26px)/1.25 Georgia, 'Times New Roman', serif; letter-spacing: 0; text-transform: none; }
.vault-fidelity .vault-paper .vault-star { color: #5b4a34; font-size: 22px; }
.vault-fidelity .vault-paper .vault-star::before, .vault-fidelity .vault-paper .vault-star::after { width: 35%; }
.vault-fidelity .vault-paper h1 { margin: 6px 0 0; color: #211a13; font: 400 clamp(36px, 3.7vw, 48px)/1.12 Georgia, 'Times New Roman', serif; }
.vault-fidelity .vault-paper p { margin: 0 0 .8em; color: #211a13; font: 400 clamp(21px, 2vw, 25px)/1.4 Georgia, 'Times New Roman', serif; white-space: pre-line; }
.vault-fidelity .vault-paper p:last-child { margin-bottom: 0; }
.vault-fidelity .vault-paper #letter-end { margin: 38px 0 0; padding: 10px 0 20px; min-height: 52px; text-align: center; }
.vault-fidelity #letter-read-fallback { display: block; max-width: 100%; margin: 14px auto 0; color: #5b4a34; white-space: normal; }

@media (max-width: 700px) {
  .vault-fidelity { min-height: calc(100svh - 70px); padding: 46px 24px calc(100px + env(safe-area-inset-bottom)); background-position: 48% top; }
  .vault-fidelity.vault-gallery { background-image: url('assets/vault/fidelity/closed-library-mobile.webp'); background-size: cover; }
  .vault-fidelity .vault-heading { margin-bottom: 28px; }
  .vault-fidelity .vault-heading h1 { margin-bottom: 7px; font-size: clamp(30px, 7.8vw, 38px); }
  .vault-fidelity .vault-heading p { margin-top: 7px; font-size: 20px; line-height: 1.4; }
  .vault-fidelity .vault-star { font-size: 20px; }
  .vault-fidelity .vault-star::before, .vault-fidelity .vault-star::after { width: 90px; }
  .vault-fidelity .vault-gallery-back { display: flex; align-items: center; justify-content: flex-start; position: absolute; top: 4px; left: 24px; min-width: 44px; min-height: 44px; color: #e9d5b4; font-size: 27px; }
  .vault-fidelity .vault-envelopes { grid-template-columns: minmax(0, 1fr); gap: 34px; max-width: 430px; }
  .vault-fidelity .vault-envelope { font-size: 20px; }
  .vault-fidelity .vault-envelope strong { font-size: clamp(26px, 6.7vw, 32px); }
  .vault-fidelity .vault-actions { margin-top: 28px; }
  .vault-fidelity .vault-actions .vault-back { display: none; }
  .vault-fidelity.vault-reading { padding: 14px 7px calc(108px + env(safe-area-inset-bottom)); }
  .vault-fidelity .vault-folder { padding: 8px 9px 17px; }
  .vault-fidelity .vault-folder::before { border-width: 36px; border-image-width: 36px; }
  .vault-fidelity .vault-folder-art { top: 70px; left: 0; width: 54%; }
  .vault-fidelity .vault-letter-leaf::before, .vault-fidelity .vault-letter-leaf::after { top: 280px; width: 18px; height: 56px; background-size: 395.85px 486.85px; }
  .vault-fidelity .vault-letter-leaf::before { left: -7px; background-position: -6.3px -201.6px; }
  .vault-fidelity .vault-letter-leaf::after { right: -5px; background-position: -371.7px -201.6px; }
  .vault-fidelity .vault-letter-leaf { margin-left: 7%; }
  .vault-fidelity .vault-letter-leaf > .vault-back { margin: 0 0 4px 12px; font-size: 22px; }
  .vault-fidelity .vault-paper { padding: 28px 25px 30px; }
  .vault-fidelity .vault-paper::before { border-width: 36px; border-image-width: 36px; }
  .vault-fidelity .vault-paper-heading { margin-bottom: 22px; }
  .vault-fidelity .vault-paper .vault-book-title { font-size: 21px; }
  .vault-fidelity .vault-paper .vault-star { font-size: 19px; }
  .vault-fidelity .vault-paper h1 { font-size: 36px; }
  .vault-fidelity .vault-paper p { font-size: 19px; line-height: 1.4; }
  .vault-fidelity .vault-paper #letter-end { margin-top: 28px; }
}
@media (max-width: 360px) {
  .vault-fidelity.vault-reading { padding-inline: 4px; }
  .vault-fidelity .vault-paper { padding-inline: 21px; }
  .vault-fidelity .vault-paper .vault-book-title { font-size: 21px; }
  .vault-fidelity .vault-paper p { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) { .vault-fidelity .vault-envelope img { transition: none; } }

/* Fixed-size mirrored grain is independent of the authored letter height. */
.vault-fidelity .vault-material { position: absolute; display: block; pointer-events: none; width: calc(100% - 40px); height: calc(100% - 40px); inset: 20px; z-index: -3; }
.vault-fidelity .vault-material--paper {
  z-index: -1;
  /* Fade the fixed grain into the original aged edge, never show a pasted rectangle. */
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 36px, #000 calc(100% - 36px), transparent), linear-gradient(transparent, #000 36px, #000 calc(100% - 36px), transparent);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(90deg, transparent, #000 36px, #000 calc(100% - 36px), transparent), linear-gradient(transparent, #000 36px, #000 calc(100% - 36px), transparent);
  mask-composite: intersect;
}
@media (max-width: 700px) {
  .vault-fidelity .vault-material { inset: 12px; width: calc(100% - 24px); height: calc(100% - 24px); }
}

/* Repeat only the long side strips at their native edge scale; never elongate grain. */
.vault-fidelity .vault-folder::before, .vault-fidelity .vault-paper::before { border-image-repeat: stretch round; }