/* Bimedia Pustaka — tampilan editorial bergaya toko buku desain (terinspirasi gestalten.com) */
:root{
  --ink:#111; --ink-2:#555; --muted:#8a8a8a; --line:#e6e6e6; --tile:#f2f2f0; --alt:#f7f7f5;
  --accent:#111; --max:1360px;
  --font:"Helvetica Neue",Helvetica,Arial,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:#fff;line-height:1.55;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{line-height:1.12;margin:0;font-weight:700;letter-spacing:-.02em}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
.skip{position:absolute;left:-999px;top:0;background:#000;color:#fff;padding:10px 14px;z-index:99}
.skip:focus{left:0}
.muted{color:var(--muted)}
[hidden]{display:none!important}

/* Topbar */
.topbar{background:#111;color:#fff;font-size:12px;letter-spacing:.04em}
.topbar .wrap{display:flex;justify-content:space-between;gap:16px;padding-top:8px;padding-bottom:8px}
.topbar a{text-decoration:underline;text-underline-offset:3px}

/* Header */
.site-header{background:#fff;position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;gap:32px;height:76px}
.logo{font-size:30px;font-weight:400;letter-spacing:-.045em;line-height:1;white-space:nowrap}
.logo b{font-weight:800}
.logo:hover{text-decoration:none}
.logo-lg{font-size:36px}
.search{flex:1;max-width:520px;margin-left:auto;position:relative}
.search input{width:100%;height:42px;border:1px solid var(--line);border-radius:0;background:var(--alt);padding:0 44px 0 16px;font:inherit;font-size:14px;outline:0}
.search input:focus{border-color:#111;background:#fff}
.search button{position:absolute;right:0;top:0;height:42px;width:44px;border:0;background:none;cursor:pointer;color:#111}
.top-links{display:flex;gap:26px;font-size:13px;text-transform:uppercase;letter-spacing:.08em;font-weight:600}
.cat-nav{border-top:1px solid var(--line)}
.cat-nav .wrap{display:flex;gap:30px;overflow-x:auto;scrollbar-width:none}
.cat-nav .wrap::-webkit-scrollbar{display:none}
.cat-nav a{padding:13px 0;font-size:12.5px;letter-spacing:.09em;text-transform:uppercase;font-weight:600;white-space:nowrap;border-bottom:2px solid transparent;color:var(--ink-2)}
.cat-nav a:hover,.cat-nav a.on{color:#111;border-bottom-color:#111;text-decoration:none}
.only-mobile{display:none}
.burger{display:none;background:none;border:0;width:36px;height:36px;padding:6px;cursor:pointer}
.burger span{display:block;height:2px;background:#111;margin:6px 0}

/* Hero */
.hero{position:relative;overflow:hidden;background:#111}
.hero-track{position:relative;min-height:540px}
.slide{position:absolute;inset:0;background:var(--bg);color:var(--fg);opacity:0;visibility:hidden;transition:opacity .7s ease,visibility .7s}
.slide.active{opacity:1;visibility:visible;position:relative}
.slide-in{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:60px;min-height:540px;padding-top:50px;padding-bottom:50px}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;margin-bottom:22px;opacity:.85}
.eyebrow.dark{color:var(--ink-2);opacity:1;margin-bottom:14px}
.slide h2{font-size:clamp(34px,4.6vw,66px);letter-spacing:-.035em;max-width:14em;margin-bottom:18px}
.slide .by{font-size:17px;opacity:.85;margin-bottom:10px}
.slide .lead{max-width:34em;opacity:.8;margin-bottom:28px}
.slide-cover{display:flex;justify-content:center}
.slide-cover .cover-img,.slide-cover .cover-ph{width:auto;max-height:420px;aspect-ratio:2/3;box-shadow:0 30px 60px -18px rgba(0,0,0,.55);transform:rotate(2.5deg)}
.slide-cover .cover-img{object-fit:cover}
.slide-cover .cover-ph{width:280px}
.hero-dots{position:absolute;left:0;right:0;bottom:20px;display:flex;justify-content:center;gap:10px}
.hero-dots button{width:34px;height:3px;border:0;padding:0;background:rgba(255,255,255,.4);cursor:pointer}
.hero-dots button.on{background:#fff}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border:1px solid rgba(255,255,255,.55);background:rgba(0,0,0,.12);color:#fff;font-size:20px;cursor:pointer}
.hero-arrow:hover{background:#fff;color:#111}
.hero-arrow.prev{left:18px}.hero-arrow.next{right:18px}

/* Buttons */
.btn{display:inline-block;background:#111;color:#fff;border:1px solid #111;padding:14px 26px;font:inherit;font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;cursor:pointer;text-align:center}
.btn:hover{background:#fff;color:#111;text-decoration:none}
.btn-light{background:#fff;color:#111;border-color:#fff}
.btn-light:hover{background:transparent;color:#fff}
.btn-ghost{background:transparent;color:#111}
.btn-ghost:hover{background:#111;color:#fff}
.btn-sm{padding:10px 18px;font-size:12px}

/* Sections */
.section{padding:64px 0}
.section.tight{padding:28px 0 72px}
.section-alt{background:var(--alt)}
.section-title{font-size:28px;margin-bottom:28px}
.tabs{display:flex;align-items:center;gap:30px;border-bottom:1px solid var(--line);margin-bottom:36px}
.tabs button{background:none;border:0;border-bottom:2px solid transparent;padding:0 0 14px;margin-bottom:-1px;font:inherit;font-size:20px;font-weight:700;letter-spacing:-.02em;color:var(--muted);cursor:pointer;white-space:nowrap}
.tabs button.on{color:#111;border-bottom-color:#111}
.tabs-all{margin-left:auto;font-size:13px;text-transform:uppercase;letter-spacing:.08em;font-weight:600;padding-bottom:14px;white-space:nowrap}

/* Grid & kartu */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:44px 28px}
.card-media{position:relative;display:flex;align-items:center;justify-content:center;aspect-ratio:1/1.12;background:var(--tile);padding:9% 16%;overflow:hidden}
.card-media .cover-img{max-height:100%;width:auto;height:auto;max-width:100%;object-fit:contain;box-shadow:0 14px 28px -12px rgba(0,0,0,.4);transition:transform .35s ease}
.card-media:hover .cover-img,.card-media:hover .cover-ph{transform:scale(1.04)}
.card-media .cover-ph{width:100%;max-width:210px;aspect-ratio:2/3;box-shadow:0 14px 28px -12px rgba(0,0,0,.4);transition:transform .35s ease}
.card-body{padding-top:16px}
.card-cat{font-size:11.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;font-weight:600}
.card-title{font-size:17px;margin:6px 0 4px;font-weight:600;letter-spacing:-.01em;line-height:1.28}
.card-title a:hover{text-decoration:underline}
.card-author{font-size:14px;color:var(--ink-2);margin:0}
.badge{position:absolute;left:12px;top:12px;background:#111;color:#fff;font-size:11px;letter-spacing:.1em;text-transform:uppercase;font-weight:700;padding:5px 9px;z-index:2}

/* Tombol beli WhatsApp */
.btn-wa{display:inline-flex;align-items:center;gap:10px;background:#1fa855;border-color:#1fa855;color:#fff;padding:15px 30px}
.btn-wa:hover{background:#178c46;border-color:#178c46;color:#fff}
.card-buy{display:inline-flex;align-items:center;gap:7px;margin-top:12px;padding:8px 14px;border:1px solid #111;font-size:11.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.card-buy:hover{background:#1fa855;border-color:#1fa855;color:#fff;text-decoration:none}

/* Segera Terbit (tidak bisa diklik) */
.card-buy.is-soon,.card-buy.is-soon:hover{background:#eee;border-color:#ddd;color:#888;cursor:not-allowed;pointer-events:none}
.btn-soon,.btn-soon:hover{background:#e9e9e6;border-color:#d8d8d4;color:#777;cursor:not-allowed;pointer-events:none}

/* Popup detail buku */
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px}
.modal[hidden]{display:none}
.modal-backdrop{position:absolute;inset:0;background:rgba(10,10,10,.6);animation:fade .2s ease}
.modal-box{position:relative;background:#fff;width:100%;max-width:960px;max-height:calc(100vh - 40px);overflow:auto;outline:0;animation:pop .25s ease;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.modal-x{position:absolute;right:10px;top:8px;z-index:3;width:42px;height:42px;border:0;background:#fff;font-size:32px;line-height:1;cursor:pointer;color:#111}
.modal-x:hover{background:#111;color:#fff}
.modal-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr)}
.modal-media{background:var(--tile);display:flex;align-items:center;justify-content:center;padding:48px 12%;min-height:420px}
.modal-media .cover-img{max-height:520px;width:auto;box-shadow:0 24px 40px -16px rgba(0,0,0,.5)}
.modal-media .cover-ph{width:100%;max-width:280px;aspect-ratio:2/3;box-shadow:0 24px 40px -16px rgba(0,0,0,.5)}
.modal-media .cover-ph strong{font-size:22px}
.modal-info{padding:40px 36px 34px}
.modal-info h2{font-size:clamp(24px,2.6vw,34px);letter-spacing:-.03em;margin-bottom:8px;padding-right:30px}
.modal-info .pdp-author{font-size:16px;margin-bottom:18px}
.modal-info .specs{margin-bottom:18px}
.modal-info .specs>div{grid-template-columns:110px 1fr;padding:9px 0;font-size:14px}
.modal-desc{font-size:15px;line-height:1.65;color:#333;max-height:150px;overflow:auto;margin-bottom:22px;white-space:pre-line}
.modal-cta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.modal-cta .btn{flex:1;min-width:200px;justify-content:center}
.modal-full{font-size:13px;text-transform:uppercase;letter-spacing:.08em;font-weight:600;text-decoration:underline;text-underline-offset:3px}
body.modal-open{overflow:hidden}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
@media (max-width:760px){
  .modal{padding:0;align-items:flex-end}
  .modal-box{max-height:92vh}
  .modal-grid{grid-template-columns:1fr}
  .modal-media{min-height:0;padding:34px 24%}
  .modal-media .cover-img{max-height:300px}
  .modal-info{padding:24px 20px 26px}
}

/* Bagikan */
.share{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:-10px 0 30px}
.share-label{font-size:12px;text-transform:uppercase;letter-spacing:.1em;font-weight:700;color:var(--muted);margin-right:6px}
.share-btn{display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 13px;border:1px solid var(--line);background:#fff;color:#111;font:inherit;font-size:13px;font-weight:600;cursor:pointer}
.share-btn:hover{background:#111;color:#fff;border-color:#111;text-decoration:none}
.share-note{font-size:13.5px;background:var(--alt);border-left:3px solid #111;padding:10px 14px;margin:-14px 0 28px}

/* Sampul tipografi (jika belum ada gambar) */
.cover-ph{background:var(--bg);color:var(--fg);display:flex;flex-direction:column;justify-content:space-between;padding:18px 16px;text-align:left;overflow:hidden;position:relative}
.cover-ph::after{content:"";position:absolute;left:0;top:0;bottom:0;width:7px;background:rgba(0,0,0,.18)}
.cover-ph small{font-size:9px;letter-spacing:.2em;font-weight:700;opacity:.8}
.cover-ph strong{font-size:clamp(15px,1.5vw,21px);line-height:1.12;letter-spacing:-.02em;font-weight:800;word-break:break-word}
.cover-ph em{font-style:normal;font-size:11px;opacity:.85}
.slide-cover .cover-ph strong{font-size:26px}

/* Tile kategori */
.cat-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.tile{position:relative;display:flex;flex-direction:column;justify-content:flex-end;min-height:220px;padding:24px;background:var(--bg);color:var(--fg);overflow:hidden}
.tile:hover{text-decoration:none}
.tile-n{font-size:12px;letter-spacing:.12em;text-transform:uppercase;opacity:.8;margin-bottom:10px}
.tile-t{font-size:26px;font-weight:800;letter-spacing:-.03em;line-height:1.08}
.tile-a{position:absolute;right:22px;top:20px;font-size:26px;transition:transform .25s}
.tile:hover .tile-a{transform:translateX(6px)}

/* Band */
.band{background:#111;color:#fff;padding:90px 0;text-align:center}
.band h2{font-size:clamp(30px,4vw,54px);letter-spacing:-.035em;max-width:16em;margin:0 auto 18px}
.band p{max-width:40em;margin:0 auto 30px;opacity:.75}

/* Page head */
.page-head{padding:42px 0 10px}
.page-head h1{font-size:clamp(34px,4.4vw,60px);letter-spacing:-.04em;margin-bottom:8px}
.crumbs{font-size:12.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:18px}
.crumbs.pad{padding-top:22px;margin:0}
.crumbs a:hover{color:#111}

/* Filter */
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:34px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.filters input,.filters select{height:42px;border:1px solid var(--line);background:#fff;padding:0 14px;font:inherit;font-size:14px;border-radius:0}
.filters input{flex:1;min-width:200px}
.filters .reset{font-size:13px;text-decoration:underline;color:var(--ink-2)}
.empty{padding:60px 0;color:var(--muted);text-align:center}

.pagination{display:flex;justify-content:center;gap:6px;margin-top:56px;flex-wrap:wrap}
.pagination a,.pagination span{min-width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);font-size:14px;padding:0 10px}
.pagination a:hover{border-color:#111;text-decoration:none}
.pagination .current{background:#111;color:#fff;border-color:#111}
.pagination .gap{border:0}

/* Halaman produk */
.pdp{padding:10px 0 80px}
.pdp-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:72px;align-items:start}
.pdp-media{position:sticky;top:150px;background:var(--tile);display:flex;align-items:center;justify-content:center;padding:70px 14%;min-height:560px}
.pdp-media .cover-img{max-height:620px;width:auto;box-shadow:0 30px 50px -20px rgba(0,0,0,.5)}
.pdp-media .cover-ph{width:100%;max-width:340px;aspect-ratio:2/3;box-shadow:0 30px 50px -20px rgba(0,0,0,.5)}
.pdp-media .cover-ph strong{font-size:28px}
.pdp-info h1{font-size:clamp(30px,3.4vw,48px);letter-spacing:-.035em;margin-bottom:12px}
.pdp-author{font-size:19px;color:var(--ink-2);margin-bottom:26px}
.cta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.specs{margin:0 0 36px;border-top:1px solid var(--line)}
.specs>div{display:grid;grid-template-columns:150px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
.specs dt{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:600;padding-top:2px}
.specs dd{margin:0}
.specs a{text-decoration:underline;text-underline-offset:3px}
.desc h2{font-size:22px;margin-bottom:14px}
.desc{color:#333;font-size:16.5px;line-height:1.7}

/* Prosa */
.prose{max-width:760px}
.lead-lg{font-size:24px;line-height:1.4;letter-spacing:-.015em}
.prose h2{font-size:26px;margin:36px 0 14px}
.contact{list-style:none;padding:0;margin:0}
.contact li{padding:12px 0;border-bottom:1px solid var(--line);display:flex;gap:20px}
.contact strong{width:100px;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.08em;padding-top:3px}
code{background:#eee;padding:2px 6px;font-size:.9em}

/* Footer */
.site-footer{background:#fff;border-top:1px solid var(--line);padding-top:60px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.foot-note{color:var(--ink-2);margin-top:14px;max-width:22em;font-size:14px}
.site-footer h4{font-size:12px;text-transform:uppercase;letter-spacing:.12em;margin-bottom:16px}
.site-footer ul{list-style:none;margin:0;padding:0;font-size:14.5px;color:var(--ink-2)}
.site-footer li{margin-bottom:9px}
.foot-bottom{margin-top:50px;padding-top:20px;padding-bottom:30px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

/* Responsif */
@media (max-width:1100px){
  .grid{grid-template-columns:repeat(3,1fr)}
  .pdp-grid{gap:44px}
}
@media (max-width:860px){
  .wrap{padding:0 18px}
  .head-row{height:64px;gap:14px}
  .burger{display:block}
  .logo{font-size:25px;margin-right:auto}
  .search{display:none}
  .top-links{display:none}
  .cat-nav{display:none}
  .cat-nav.open{display:block}
  .cat-nav .wrap{flex-direction:column;gap:0;overflow:visible;padding-bottom:8px}
  .cat-nav a{padding:14px 0;border-bottom:1px solid var(--line)}
  .only-mobile{display:block}
  .head-row{justify-content:space-between}
  .burger{order:2}
  .hero-track,.slide-in{min-height:0}
  .slide-in{grid-template-columns:1fr;gap:30px;padding-top:40px;padding-bottom:64px}
  .slide-cover{order:-1}
  .slide-cover .cover-img,.slide-cover .cover-ph{max-height:260px}
  .slide-cover .cover-ph{width:175px}
  .slide-cover .cover-ph strong{font-size:17px}
  .hero-arrow{display:none}
  .grid{grid-template-columns:repeat(2,1fr);gap:32px 14px}
  .card-media{padding:8% 12%}
  .card-title{font-size:15px}
  .section{padding:44px 0}
  .pdp-grid{grid-template-columns:1fr}
  .pdp-media{position:static;min-height:0;padding:40px 18%}
  .specs>div{grid-template-columns:110px 1fr}
  .share-btn span{display:none}
  .share-btn{width:42px;justify-content:center;padding:0}
  .cta .btn-wa{width:100%;justify-content:center}
  .foot-grid{grid-template-columns:1fr 1fr}
  .topbar span{display:none}
  .topbar .wrap{justify-content:center}
}
@media (max-width:480px){
  .foot-grid{grid-template-columns:1fr}
  .tabs button{font-size:17px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}