/* Walls of Azu: the library. Same family as chiefazu.com, but the covers lead. */
:root{
  --ink:#0c0b0b;
  --ink-2:#141212;
  --bone:#ece7df;
  --bone-2:#cfc8be;
  --mute:#9a938b;
  --line:rgba(236,231,223,.14);
  --line-2:rgba(236,231,223,.28);
  --maroon:#7a1f24;
  --ease-out:cubic-bezier(.16,1,.3,1);
  --gutter:clamp(16px,4vw,56px);
  --max:1360px;
  --display:"Archivo",system-ui,sans-serif;
  --body:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;overflow-x:clip}
body{margin:0;background:var(--ink);color:var(--bone);font:400 16px/1.6 var(--body);-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--bone);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.eyebrow{font:600 11px/1 var(--body);letter-spacing:.24em;text-transform:uppercase;color:var(--mute)}
.no{font:600 12px/1 var(--display);font-stretch:125%;letter-spacing:.14em;color:var(--bone-2)}
.disp{font-family:var(--display);font-stretch:118%;font-weight:800;text-transform:uppercase;letter-spacing:-.01em;line-height:.92}

/* header */
.hdr{position:sticky;top:0;z-index:10;background:rgba(12,11,11,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.hdr__in{display:flex;align-items:center;justify-content:space-between;height:64px}
.mark{font:800 15px/1 var(--display);font-stretch:125%;letter-spacing:.16em;text-transform:uppercase}
.hdr__link{font:500 13px/1 var(--body);color:var(--bone-2);transition:color .2s}
.hdr__link:hover{color:var(--bone)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:46px;padding:0 22px;border:1px solid var(--line-2);border-radius:999px;font:600 13px/1 var(--body);letter-spacing:.06em;transition:border-color .25s,background .25s}
.btn:hover{border-color:var(--bone)}
.btn--solid{background:var(--bone);color:var(--ink);border-color:var(--bone)}
.btn--solid:hover{background:#fff;border-color:#fff}
.btn:active{transform:scale(.97)}
.tag{font:700 10px/1 var(--body);letter-spacing:.14em;text-transform:uppercase;background:var(--bone);color:var(--ink);padding:5px 7px;border-radius:999px}
.get{display:flex;align-items:center;gap:8px;margin:0 0 10px;font:600 11px/1 var(--body);letter-spacing:.2em;text-transform:uppercase;color:var(--mute)}
.dl{display:flex;flex-wrap:wrap;gap:8px}

/* covers */
.cover{position:relative;aspect-ratio:3/4;border-radius:3px;overflow:hidden;background:var(--ink-2);box-shadow:0 24px 60px -24px rgba(0,0,0,.9),0 0 0 1px rgba(236,231,223,.07)}
.cover img{width:100%;height:100%;object-fit:cover}

/* home: hero portrait, sitting to the right behind the intro and the latest book */
.hero{position:relative;overflow:hidden}
.hero > .wrap{position:relative;z-index:1}
.hero__bg{position:absolute;top:clamp(120px,15vw,210px);right:0;bottom:0;width:min(820px,54vw);z-index:0;pointer-events:none}
.hero__bg img{width:100%;height:100%;object-fit:cover;object-position:30% 20%}
.hero__bg::after{content:"";position:absolute;inset:0;background:
  linear-gradient(90deg,var(--ink) 0%,rgba(12,11,11,.6) 22%,rgba(12,11,11,.12) 50%,rgba(12,11,11,.1) 100%),
  linear-gradient(0deg,var(--ink) 0%,rgba(12,11,11,0) 32%),
  linear-gradient(180deg,var(--ink) 0%,rgba(12,11,11,0) 14%)}

/* home: intro */
.intro{padding-block:clamp(56px,10vh,110px) clamp(36px,6vh,64px)}
.intro h1{font-size:clamp(48px,9vw,128px);margin:0}
.intro p{color:var(--bone-2);max-width:44ch;font-size:clamp(15px,1.3vw,18px);margin:22px 0 0}
.intro p em{color:var(--bone)}

/* home: latest */
.latest{display:grid;grid-template-columns:minmax(0,420px) 1fr;gap:clamp(24px,5vw,72px);align-items:end;padding-bottom:clamp(56px,9vh,100px);border-bottom:1px solid var(--line)}
.latest__title{font-size:clamp(40px,6vw,88px);margin:14px 0 14px}
.latest__rec{color:var(--mute);font-size:14px;margin:0 0 28px}
.latest__lesson{font:800 clamp(18px,1.8vw,24px)/1.15 var(--display);font-stretch:118%;text-transform:uppercase;max-width:26ch;margin:0 0 32px}
.latest__lesson em{font-style:normal;color:var(--accent,#d9a24a)}
.latest .btns{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px 24px}

/* home: all books */
.all{padding-block:clamp(48px,8vh,88px) clamp(72px,12vh,140px)}
.all__head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:28px}
.all__head h2{font-size:clamp(28px,3vw,40px);margin:0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(44%,220px),1fr));gap:clamp(20px,3vw,40px) clamp(14px,2vw,28px);list-style:none;margin:0;padding:0}
.card a{display:block}
.card .cover{transition:transform .6s var(--ease-out),box-shadow .6s var(--ease-out)}
@media (hover:hover){.card a:hover .cover{transform:translateY(-8px);box-shadow:0 40px 80px -28px rgba(0,0,0,.95),0 0 0 1px rgba(236,231,223,.14)}}
.card .no{display:block;margin-top:16px}
.card h3{font:700 clamp(16px,1.6vw,22px)/1.05 var(--display);font-stretch:115%;text-transform:uppercase;margin:8px 0 0}

/* book page */
.book{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:clamp(28px,5vw,80px);align-items:start;padding:clamp(28px,5vh,56px) 0 clamp(56px,9vh,100px)}
.book__info{position:sticky;top:96px}
.book__title{font-size:clamp(44px,6.5vw,104px);margin:14px 0 14px}
.book__rec{color:var(--mute);font-size:14px;margin:0 0 28px}
.book__lesson{font:800 clamp(18px,1.8vw,24px)/1.15 var(--display);font-stretch:118%;text-transform:uppercase;max-width:26ch;margin:0 0 32px}
.book__lesson em{font-style:normal;color:var(--accent)}
.book__credits{margin:32px 0 0;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--mute);font-style:italic}
.book__credits p{margin:0}

/* the reader: swipe through the pages */
.reader{position:relative}
.reader__track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;overscroll-behavior-x:contain;scrollbar-width:none;border-radius:3px;box-shadow:0 30px 80px -30px rgba(0,0,0,.95),0 0 0 1px rgba(236,231,223,.07)}
.reader__track::-webkit-scrollbar{display:none}
.reader__page{flex:0 0 100%;scroll-snap-align:start;aspect-ratio:3/4;background:var(--ink-2)}
.reader__page img{width:100%;height:100%;object-fit:cover;user-select:none;-webkit-user-drag:none}
.reader__bar{display:flex;align-items:center;justify-content:space-between;margin-top:14px}
.reader__count{font:600 12px/1 var(--display);font-stretch:125%;letter-spacing:.14em;color:var(--bone-2);font-variant-numeric:tabular-nums}
.reader__btns{display:flex;gap:8px}
.reader__btn{width:44px;height:44px;border-radius:50%;border:1px solid var(--line-2);background:transparent;color:var(--bone);font:400 17px/1 var(--body);cursor:pointer;transition:border-color .25s,opacity .25s}
.reader__btn:hover{border-color:var(--bone)}
.reader__btn:disabled{opacity:.3;cursor:default;border-color:var(--line-2)}
.reader__hint{font-size:12px;color:var(--mute)}

/* previous / next */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:28px 0 clamp(64px,10vh,120px);border-top:1px solid var(--line)}
.pager a{display:flex;align-items:center;gap:16px;padding:12px 0}
.pager a:last-child{justify-content:flex-end;text-align:right}
.pager .cover{width:64px;flex:none;box-shadow:none}
.pager b{display:block;font:700 15px/1.1 var(--display);font-stretch:115%;text-transform:uppercase;margin-top:6px}

/* footer */
.ftr{border-top:1px solid var(--line);padding:40px 0 48px;font-size:13px;color:var(--mute)}
.ftr__in{display:flex;flex-wrap:wrap;justify-content:space-between;gap:20px 32px}
.ftr nav{display:flex;flex-wrap:wrap;gap:10px 22px}
.ftr a:hover{color:var(--bone)}

@media (max-width:860px){
  .hero__bg{top:0;left:0;width:auto;bottom:auto;height:min(92vh,760px)}
  .hero__bg img{object-position:34% 18%}
  .hero__bg::after{background:linear-gradient(0deg,var(--ink) 0%,rgba(12,11,11,.55) 45%,rgba(12,11,11,.35) 100%)}
  .latest{grid-template-columns:1fr;align-items:start}
  .latest .cover{max-width:420px}
  .book{grid-template-columns:1fr}
  .book__info{position:static}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;scroll-behavior:auto!important}}