:root{
  --bg:#03060b; --panel:rgba(5,10,17,.68); --panel2:rgba(12,18,28,.72); --line:rgba(255,55,122,.58); --line2:rgba(104,196,255,.23); --text:#f2f0ea; --muted:#b7b6ba; --pink:#ff3f86; --cyan:#74d4ff; --shadow:rgba(0,0,0,.55);
}
*{box-sizing:border-box} html,body{height:100%;margin:0;background:#020408;color:var(--text);font-family:Inter,Segoe UI,Arial,sans-serif;overflow:hidden} button,a{font:inherit;color:inherit}button{cursor:pointer}
.site-shell{position:relative;height:100vh;min-height:680px;background:linear-gradient(180deg,rgba(1,3,8,.35),rgba(1,3,8,.85)),url('assets/neu-babel-elevator.jpg') center/cover no-repeat;isolation:isolate;overflow:hidden}
.rain{position:absolute;inset:-20%;background:repeating-linear-gradient(102deg,rgba(255,255,255,.06) 0 1px,transparent 1px 12px);opacity:.25;animation:rain 4s linear infinite;pointer-events:none;z-index:1}.elevator-frame{position:absolute;inset:0;border:1.3vw solid rgba(3,7,12,.7);box-shadow:inset 0 0 120px #000, inset 0 0 0 1px rgba(255,255,255,.05);border-radius:2vw;pointer-events:none;z-index:3}@keyframes rain{to{transform:translateY(120px)}}
.topbar{position:absolute;z-index:10;top:0;left:0;right:0;display:flex;align-items:center;gap:4vw;padding:24px 48px;text-transform:uppercase;letter-spacing:.22em;font-size:13px}.brand{text-decoration:none;color:var(--pink);font-size:25px;letter-spacing:.25em}.nav{display:flex;gap:38px;margin:auto}.nav button,.icons button{background:none;border:0;opacity:.9;text-transform:uppercase;letter-spacing:.22em}.nav button:hover,.icons button:hover{color:var(--pink)}.icons{display:flex;gap:20px;font-size:18px}
.status-panel{position:absolute;z-index:8;top:23%;width:150px;padding:22px 18px;border:1px solid rgba(255,63,134,.35);background:linear-gradient(180deg,rgba(5,8,13,.65),rgba(5,8,13,.25));box-shadow:0 0 30px rgba(255,63,134,.08);display:flex;flex-direction:column;gap:18px;font-size:12px;letter-spacing:.13em;text-transform:uppercase;color:#e9e2e5}.status-panel b,.panel-kicker{display:block;color:var(--pink);font-weight:600;margin-bottom:5px}.left-panel{left:48px}.right-panel{right:48px;text-align:center}.tower-map{height:125px;margin:8px auto;border-left:2px solid var(--pink);width:28px;box-shadow:0 0 24px var(--line);position:relative}.tower-map:before,.tower-map:after{content:"";position:absolute;left:-14px;right:-14px;border-top:1px solid var(--line);}.tower-map:before{top:28px}.tower-map:after{bottom:20px}
.shaft{height:100%;transition:transform 900ms cubic-bezier(.2,.8,.2,1);will-change:transform}.floor{height:100vh;min-height:680px;display:grid;place-items:center;padding:100px 220px 80px;position:relative}.floor:after{content:"";position:absolute;left:50%;bottom:28px;translate:-50% 0;width:180px;height:46px;background:linear-gradient(45deg,transparent 45%,var(--pink) 47% 54%,transparent 56%),linear-gradient(-45deg,transparent 45%,var(--pink) 47% 54%,transparent 56%);opacity:.58;filter:drop-shadow(0 0 18px var(--pink));}
.hero-copy{text-align:center;max-width:920px;margin:auto;text-shadow:0 10px 30px #000}.eyebrow,.instruction{letter-spacing:.35em;text-transform:uppercase;color:#e9e5e4}.eyebrow{font-size:24px;margin:0 0 10px}.hero-copy h1,.hero-copy h2{font-family:Impact,Haettenschweiler,'Arial Narrow',sans-serif;letter-spacing:.16em;font-size:clamp(70px,9vw,142px);line-height:.9;margin:0;color:#efeee9;text-shadow:0 0 6px rgba(255,255,255,.2);filter:drop-shadow(0 6px 8px rgba(0,0,0,.8))}.hero-copy h2{font-size:clamp(56px,7vw,110px)}.subtitle{color:var(--pink);letter-spacing:.42em;text-transform:uppercase;margin:22px 0;font-weight:700}.instruction{font-size:13px;margin-bottom:28px}.language-grid,.hub-grid{display:grid;gap:24px}.language-grid{grid-template-columns:1fr 1fr;max-width:650px;margin:0 auto 26px}.choice-card,.menu-card{background:linear-gradient(180deg,var(--panel2),rgba(0,0,0,.45));border:1px solid var(--line);box-shadow:0 0 0 1px rgba(255,255,255,.03) inset,0 0 35px rgba(255,63,134,.12);border-radius:10px;min-height:104px;text-transform:uppercase;letter-spacing:.24em;font-size:28px;color:#efeee9}.choice-card:hover,.menu-card:hover{transform:translateY(-3px);border-color:var(--pink);box-shadow:0 0 35px rgba(255,63,134,.32);transition:.2s}.up-button{background:none;border:0;display:flex;flex-direction:column;align-items:center;margin:0 auto;color:var(--pink);text-transform:uppercase;letter-spacing:.25em}.up-button span{display:grid;place-items:center;width:88px;height:88px;border-radius:50%;border:1px solid var(--line);font-size:62px;box-shadow:0 0 30px rgba(255,63,134,.45);background:rgba(5,5,10,.65)}.up-button small{margin-top:10px}.hub-grid{grid-template-columns:repeat(3,minmax(180px,1fr));max-width:900px;margin:30px auto}.menu-card{min-height:118px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;font-size:22px}.menu-card span{font-size:11px;letter-spacing:.13em;color:var(--muted);text-transform:none}.compact .instruction{margin-bottom:10px}
.content-floor{place-items:center}.content-card{max-width:900px;width:100%;max-height:72vh;overflow:auto;padding:34px;border:1px solid rgba(255,63,134,.35);border-radius:18px;background:linear-gradient(180deg,rgba(5,8,14,.88),rgba(5,8,14,.62));box-shadow:0 25px 90px var(--shadow),0 0 50px rgba(255,63,134,.1);backdrop-filter:blur(8px)}.content-card.wide{max-width:1080px}.section-head p:first-child{color:var(--pink);letter-spacing:.32em;text-transform:uppercase;font-size:12px}.section-head h2{font-size:42px;margin:.1em 0 .25em;letter-spacing:.05em}.section-head p{color:#d8d4d2;line-height:1.55}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}.info-card,.book-entry,.timeline-entry{border:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.045);border-radius:14px;padding:18px;box-shadow:inset 0 0 0 1px rgba(255,63,134,.08)}.info-card b,.book-entry b{display:block;color:#fff;margin-bottom:8px;font-size:18px}.info-card p,.book-entry p,.timeline-entry p{color:#d1ced3;line-height:1.45;margin:.2em 0}.info-card .tag,.book-entry .tag{display:inline-block;margin-top:10px;color:var(--cyan);font-size:12px;text-transform:uppercase;letter-spacing:.16em}.book-zone{display:grid;grid-template-columns:210px 1fr;gap:24px;align-items:start}.book-zone img{width:100%;border-radius:10px;box-shadow:0 12px 40px #000}.book-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.book-entry{padding:14px}.book-entry b{font-size:15px}.book-entry p{font-size:13px}.timeline{position:relative;margin-top:22px;display:grid;gap:12px}.timeline-entry{display:grid;grid-template-columns:110px 1fr;gap:18px}.timeline-entry time{color:var(--pink);font-weight:700;letter-spacing:.12em}.callout{border-left:3px solid var(--pink);background:rgba(255,63,134,.08);padding:18px;margin-top:24px}.back-down{position:absolute;z-index:11;left:45px;bottom:34px;background:none;border:0;color:var(--pink);display:flex;flex-direction:column;align-items:center;text-transform:uppercase;letter-spacing:.19em;font-size:11px}.back-down span{display:grid;place-items:center;width:64px;height:64px;border-radius:50%;border:1px solid var(--line);font-size:42px;background:rgba(0,0,0,.45);box-shadow:0 0 24px rgba(255,63,134,.2)}
@media(max-width:1000px){body{overflow:auto}.site-shell{min-height:100vh;height:auto;overflow:visible}.shaft{transform:none!important}.floor{height:auto;min-height:100vh;padding:110px 22px 90px}.status-panel{display:none}.nav{display:none}.topbar{padding:18px 20px}.brand{font-size:20px}.language-grid,.hub-grid,.cards,.book-list,.book-zone{grid-template-columns:1fr}.hero-copy h1{font-size:68px}.choice-card{font-size:23px}.content-card{max-height:none}.back-down{position:fixed;left:15px;bottom:18px}.right-panel,.left-panel{display:none}}


/* v2: book shelf with real German covers and Amazon links */
.book-zone{display:block}.book-zone>img{display:none}.book-list{display:grid;grid-template-columns:repeat(5,minmax(150px,1fr));gap:16px;align-items:stretch}.book-entry{position:relative;overflow:hidden;display:flex;flex-direction:column;min-height:100%;padding:0;background:rgba(2,5,10,.72);border:1px solid rgba(255,63,134,.28);transition:transform .2s, border-color .2s, box-shadow .2s}.book-entry:hover{transform:translateY(-4px);border-color:var(--pink);box-shadow:0 18px 45px rgba(0,0,0,.45),0 0 32px rgba(255,63,134,.18)}.book-cover{width:100%;aspect-ratio:2/3;object-fit:cover;border-radius:12px 12px 0 0;box-shadow:0 10px 32px rgba(0,0,0,.55)}.book-body{display:flex;flex-direction:column;gap:8px;padding:14px;flex:1}.book-body b{font-size:16px;line-height:1.15}.book-body p{font-size:13px}.book-meta{display:flex;justify-content:space-between;gap:8px;align-items:center}.book-link{margin-top:auto;display:inline-flex;justify-content:center;align-items:center;border:1px solid var(--line);border-radius:999px;padding:10px 12px;text-decoration:none;text-transform:uppercase;letter-spacing:.16em;font-size:11px;color:#fff;background:linear-gradient(90deg,rgba(255,63,134,.22),rgba(116,212,255,.08))}.book-link:hover{background:rgba(255,63,134,.32);box-shadow:0 0 20px rgba(255,63,134,.25)}.book-link.disabled{pointer-events:none;opacity:.38}.book-note{margin-top:18px;color:#d6d1d6;font-size:13px;letter-spacing:.04em}.content-card.wide{max-width:1220px}.section-head h2{line-height:1.05}
@media(max-width:1200px){.book-list{grid-template-columns:repeat(3,minmax(160px,1fr))}}
@media(max-width:760px){.book-list{grid-template-columns:1fr 1fr}.book-body{padding:12px}.book-body p{display:none}}
@media(max-width:470px){.book-list{grid-template-columns:1fr}}