.atlas-page { background: #efe4c8; }
.atlas-page::before { content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3'/%3E%3CfeColorMatrix values='0 0 0 0 .5 0 0 0 0 .4 0 0 0 0 .25 0 0 0 .25 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
.atlas-page > section { position: relative; z-index: 1; }

/* ===== hero book ===== */
.a-hero { padding: calc(var(--nav-h) + 50px) 0 40px; display: grid; grid-template-columns: minmax(280px, 440px) 1fr; gap: clamp(30px, 6vw, 80px); align-items: center; width: min(1240px, 100% - 32px); margin-inline: auto; }
.a-hero-text { width: auto; margin: 0; }
.a-hero-text .lead { font-size: 1.1rem; color: var(--ink-2); }
.book-intro { position: relative; aspect-ratio: 3 / 4; perspective: 2000px; }
.title-page { position: absolute; inset: 0; background: #f6eedb; border-radius: 4px 12px 12px 4px; box-shadow: 0 30px 60px -25px rgba(60,40,10,.6), inset 8px 0 20px -8px rgba(80,50,10,.3); padding: 22px; overflow: hidden; }
.tp-frame { position: relative; z-index: 1; height: 100%; border: 1.5px solid #8b6a35; outline: 1px solid #8b6a35; outline-offset: -8px; display: flex; flex-direction: column; justify-content: space-between; align-items: center; text-align: center; padding: 26px 18px; }
.tp-title { font-family: 'Cormorant SC', var(--serif); font-size: clamp(2.4rem, 5vw, 3.6rem); line-height: .95; color: #2b2015; margin: 0; letter-spacing: .02em; }
.tp-title span { display: block; font-size: .55em; color: var(--cran); margin-top: 8px; letter-spacing: .08em; }
.tp-sub { font-family: var(--serif); font-style: italic; font-size: 1.05rem; color: #5a4626; max-width: 280px; margin: 0; }
.tp-small { font-family: 'Cormorant SC', var(--serif); letter-spacing: .2em; color: #6f5530; margin: 0; font-size: .95rem; }
.tp-orn { width: 180px; }
.cover { position: absolute; inset: 0; transform-origin: left center; transform-style: preserve-3d; animation: openCover 1.8s 0.4s cubic-bezier(.6,0,.2,1) forwards; z-index: 2; }
.cover-front, .cover-back { position: absolute; inset: 0; backface-visibility: hidden; border-radius: 4px 12px 12px 4px; }
.cover-front { background: radial-gradient(circle at 30% 20%, #3a5030, #1d2a18 70%); box-shadow: inset 0 0 0 10px #18220f, inset 0 0 0 12px #b08a43, inset 0 0 60px rgba(0,0,0,.6); display: grid; place-items: center; }
.cover-orn { border: 2px solid #b08a43; padding: 30px 26px; text-align: center; }
.cover-orn span { font-family: 'Cormorant SC', var(--serif); font-size: 2.6rem; color: #d9b968; letter-spacing: .1em; }
.cover-orn i { display: block; width: 40px; height: 40px; margin: 14px auto 0; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #ff8a98, #c8102e 55%, #5c0614); box-shadow: 0 0 0 3px #b08a43; }
.cover-back { background: #e9dcc0; transform: rotateY(180deg); box-shadow: inset -10px 0 30px rgba(80,50,10,.35); }
@keyframes openCover { to { transform: rotateY(-165deg); } }
.cover.gone { visibility: hidden; }
@media (max-width: 760px) { .a-hero { grid-template-columns: 1fr; } .book-intro { max-width: 320px; margin-inline: auto; width: 100%; } }

/* ===== filters ===== */
.atlas { padding: 30px 0 110px; }
.filters { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; border-bottom: 1.5px solid rgba(60,40,10,.25); padding-bottom: 6px; }
.cat-tabs { display: flex; gap: 4px; flex-wrap: wrap; position: relative; }
.cat-tabs button { border: 0; background: none; padding: 10px 14px; font-family: var(--serif); font-size: 1.35rem; font-weight: 600; color: #6f5a3a; position: relative; transition: color .25s; }
.cat-tabs button sup { font-family: var(--sans); font-size: .62rem; font-weight: 800; color: var(--cran); margin-left: 2px; }
.cat-tabs button.on { color: var(--ink); }
.cat-tabs .ink { position: absolute; bottom: -8px; height: 3px; background: var(--cran); border-radius: 2px; transition: left .45s cubic-bezier(.3,1.3,.4,1), width .45s; }
.search input { border: 0; border-bottom: 1.5px solid rgba(60,40,10,.35); background: transparent; padding: 10px 4px; font: inherit; width: 240px; font-family: var(--serif); font-size: 1.15rem; font-style: italic; }
.search input:focus { outline: none; border-color: var(--cran); }
.place-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 10px; }
.pchip { display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 999px; border: 1.5px solid rgba(60,40,10,.25); background: rgba(255,250,240,.6); font-weight: 700; font-size: .85rem; color: var(--ink-2); transition: .25s; }
.pchip i { width: 10px; height: 10px; border-radius: 50%; background: var(--c, #6f5a3a); }
.pchip:hover { border-color: var(--c, var(--ink)); transform: translateY(-2px); }
.pchip.on { background: var(--c, var(--ink)); border-color: var(--c, var(--ink)); color: #fff; }
.pchip.on i { background: #fff; }
.place-banner { overflow: hidden; height: 0; transition: height .5s cubic-bezier(.3,1,.3,1); }
.place-banner .pb-in { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin: 10px 0 6px; padding: 16px 20px; border-radius: 16px; background: rgba(255,250,240,.75); border-left: 5px solid var(--c); }
.place-banner h4 { font-size: 1.6rem; margin: 0; }
.place-banner p { margin: 0; color: var(--ink-2); font-size: .92rem; }
.place-banner a { font-weight: 800; color: var(--c); text-decoration: none; white-space: nowrap; }

/* ===== plates grid ===== */
.plates { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 26px; margin-top: 26px; }
.plate { position: relative; background: #f8f1df; padding: 14px 14px 16px; border-radius: 3px; box-shadow: 0 1px 0 #d8c9a3, 0 18px 36px -22px rgba(60,40,10,.6); cursor: pointer; transition: box-shadow .35s, transform .2s ease-out; border: 0; text-align: center; font: inherit; color: inherit; }
.plate::before { content: ''; position: absolute; inset: 7px; border: 1px solid rgba(139,106,53,.45); pointer-events: none; }
.plate:hover { box-shadow: 0 1px 0 #d8c9a3, 0 34px 50px -24px rgba(60,40,10,.75); }
.plate .no { font-family: 'Cormorant SC', var(--serif); font-size: .85rem; letter-spacing: .15em; color: #8b6a35; display: block; margin: 4px 0 6px; }
.plate .img { aspect-ratio: 3 / 4; display: grid; place-items: center; overflow: hidden; background: #f3ead4; isolation: isolate; }
.plate img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; transition: transform .8s cubic-bezier(.2,.8,.2,1); }
.plate:hover img { transform: scale(1.07); }
.plate h3 { font-size: 1.35rem; margin: 10px 0 0; }
.plate .la { font-family: var(--serif); font-style: italic; color: #6f5a3a; font-size: 1rem; }
.plate .dots { display: flex; gap: 4px; justify-content: center; margin-top: 8px; }
.plate .dots i { width: 7px; height: 7px; border-radius: 50%; }
.plate .shine { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(circle at var(--sx, 50%) var(--sy, 50%), rgba(255,255,255,.45), transparent 45%); opacity: 0; transition: opacity .3s; mix-blend-mode: soft-light; }
.plate:hover .shine { opacity: 1; }
.plate .badge { position: absolute; top: 18px; right: 18px; font-size: .62rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; background: var(--cran); color: #fff; padding: 3px 8px; border-radius: 999px; z-index: 2; }
.empty { text-align: center; font-family: var(--serif); font-size: 1.4rem; font-style: italic; color: #6f5a3a; margin: 60px 0; }

/* ===== reader (book spread) ===== */
.reader { position: fixed; inset: 0; z-index: 120; display: grid; place-items: center; padding: 16px; }
.reader[hidden] { display: none; }
.reader-bg { position: absolute; inset: 0; background: rgba(20,14,6,.72); backdrop-filter: blur(6px); }
.book { position: relative; width: min(1100px, 100%); aspect-ratio: 1.55; max-height: calc(100dvh - 40px); display: grid; grid-template-columns: 1fr 1fr; perspective: 2400px; filter: drop-shadow(0 40px 60px rgba(0,0,0,.6)); }
.page { position: relative; background: #f7efdc; overflow: hidden; padding: clamp(18px, 3vw, 44px); }
.page::before { content: ''; position: absolute; inset: 0; pointer-events: none; opacity: .6; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3'/%3E%3CfeColorMatrix values='0 0 0 0 .5 0 0 0 0 .4 0 0 0 0 .25 0 0 0 .2 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
.page.left { border-radius: 6px 0 0 6px; background: linear-gradient(90deg, #f3e9d2 0%, #f7efdc 80%, #e6d8b8 100%); }
.page.right { border-radius: 0 6px 6px 0; background: linear-gradient(90deg, #e6d8b8 0%, #f7efdc 18%, #f3e9d2 100%); }
.spine { position: absolute; left: 50%; top: 0; bottom: 0; width: 40px; margin-left: -20px; pointer-events: none; background: linear-gradient(90deg, transparent, rgba(80,50,10,.25) 45%, rgba(80,50,10,.35) 50%, rgba(80,50,10,.25) 55%, transparent); z-index: 5; }
.pg { position: relative; z-index: 1; height: 100%; display: flex; flex-direction: column; }
.pg-plate { flex: 1; position: relative; min-height: 0; overflow: hidden; border: 1px solid rgba(139,106,53,.5); outline: 1px solid rgba(139,106,53,.5); outline-offset: 4px; padding: 14px; background: #f5ecd6; }
.pg-plate img { position: absolute; inset: 14px; width: calc(100% - 28px); height: calc(100% - 28px); object-fit: contain; mix-blend-mode: multiply; }
.pg-cap { text-align: center; margin-top: 14px; font-family: var(--serif); font-style: italic; color: #5a4626; }
.pg-cap b { font-family: 'Cormorant SC', var(--serif); font-style: normal; letter-spacing: .15em; color: #8b6a35; display: block; font-size: .9rem; }
.pg-text { overflow-y: auto; scrollbar-width: thin; padding-right: 6px; }
.pg-text .cat { font-family: 'Cormorant SC', var(--serif); letter-spacing: .2em; color: var(--cran); font-size: .95rem; }
.pg-text h3 { font-size: clamp(1.8rem, 3.4vw, 3rem); margin: 6px 0 2px; }
.pg-text .la { font-family: var(--serif); font-style: italic; font-size: 1.25rem; color: #6f5a3a; margin-bottom: 14px; }
.pg-text .dropcap::first-letter { font-family: var(--serif); float: left; font-size: 3.6em; line-height: .8; padding: 6px 8px 0 0; color: var(--cran); font-weight: 700; }
.pg-text p { font-family: var(--serif); font-size: clamp(1.02rem, 1.4vw, 1.18rem); line-height: 1.45; color: #2f2516; }
.pg-meta { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; font-size: .9rem; margin: 10px 0 14px; padding: 10px 0; border-top: 1px solid rgba(139,106,53,.35); border-bottom: 1px solid rgba(139,106,53,.35); }
.pg-meta dt { font-weight: 800; color: #8b6a35; font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; padding-top: 3px; }
.pg-meta dd { margin: 0; }
.pg-fact { font-family: var(--hand); font-size: 1.45rem; line-height: 1.15; color: #7a2a1a; transform: rotate(-1.2deg); margin: 8px 0 14px; padding-left: 26px; position: relative; }
.pg-fact::before { content: '✎'; position: absolute; left: 0; top: 0; font-family: var(--sans); font-size: 1rem; color: var(--cran); }
.pg-where { display: flex; flex-wrap: wrap; gap: 6px; }
.pg-where a { text-decoration: none; }
.pg-foot { margin-top: auto; padding-top: 10px; display: flex; justify-content: center; font-family: var(--serif); color: #8b6a35; }

.leaf { position: absolute; top: 0; bottom: 0; width: 50%; transform-style: preserve-3d; z-index: 6; }
.leaf.fwd { left: 50%; transform-origin: left center; }
.leaf.back { left: 0; transform-origin: right center; }
.leaf > .page { position: absolute; inset: 0; backface-visibility: hidden; }
.leaf > .page.b { transform: rotateY(180deg); }
.leaf .shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(0,0,0,.25), transparent 60%); opacity: 0; pointer-events: none; z-index: 3; }

.r-btn, .r-close { position: absolute; z-index: 130; border: 0; background: rgba(247,239,220,.92); color: var(--ink); border-radius: 50%; display: grid; place-items: center; box-shadow: 0 10px 30px -10px #000; transition: transform .25s; }
.r-btn { top: 50%; width: 54px; height: 54px; margin-top: -27px; font-size: 2rem; line-height: 1; }
.r-btn:hover, .r-close:hover { transform: scale(1.1); }
.r-prev { left: max(10px, calc(50% - 600px)); }
.r-next { right: max(10px, calc(50% - 600px)); }
.r-close { top: 16px; right: 16px; width: 44px; height: 44px; font-size: 1.6rem; }

@media (max-width: 820px) {
  .book { grid-template-columns: 1fr; aspect-ratio: auto; height: calc(100dvh - 32px); grid-template-rows: 42% 58%; }
  .page.left { border-radius: 6px 6px 0 0; } .page.right { border-radius: 0 0 6px 6px; }
  .spine { display: none; }
  .r-btn { top: auto; bottom: 26px; margin: 0; width: 46px; height: 46px; }
  .r-prev { left: 26px; } .r-next { right: 26px; }
  .pg-foot { padding-bottom: 40px; }
}