/* =========================================================================
   50 Claude Use Cases for Architects, the showroom
   A warm, sun-lit cafe you walk through. Brand: gold + cream serif on warm light.
   ========================================================================= */
:root{
  --ink:#0B0B0D; --deep:#15131A; --panel:#17151C;
  --gold:#E8B45A; --gold-deep:#C9952F; --gold-soft:#F0CD8C;
  --cream:#F4EFE6; --cream-dim:#D8D0C2; --warm:#9A9082; --line:#2A2632;
  --serif:"Fraunces",Georgia,serif; --sans:"Inter",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.6,.01,.2,1);
  --glass:rgba(17,15,20,.72);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--ink);overflow:hidden}
body{font-family:var(--sans);color:var(--cream);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
button{font-family:inherit;color:inherit;cursor:pointer;border:0;background:none}
a{color:inherit;text-decoration:none}
canvas{display:block}
::selection{background:rgba(232,180,90,.3)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
/* real page content for search engines & AI crawlers; presented visually as the 3D experience above it */
.seo-content{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

#app{position:fixed;inset:0;z-index:1;background:#cdbfa4}
#vig{position:fixed;inset:0;z-index:2;pointer-events:none;box-shadow:inset 0 0 22vw 3vw rgba(22,15,7,.3)}

/* ============================== LOADER ============================== */
#loader{position:fixed;inset:0;z-index:90;display:grid;place-items:center;text-align:center;padding:24px;
  background:radial-gradient(130% 100% at 50% 36%,#3a2c18,#1c1710 48%,#0B0B0D);transition:opacity 1s var(--ease)}
#loader.gone{opacity:0;pointer-events:none}
#loader .eye{font-size:11px;letter-spacing:.4em;text-transform:uppercase;color:var(--gold);margin-bottom:18px}
#loader h1{font-family:var(--serif);font-weight:340;font-size:clamp(26px,4vw,46px);line-height:1.06;margin:0;letter-spacing:-.01em;max-width:16ch}
#loader h1 em{font-style:italic;color:var(--gold)}
#loader .bar{width:160px;height:2px;margin:26px auto 0;background:rgba(232,180,90,.16);border-radius:2px;overflow:hidden}
#loader .bar i{display:block;height:100%;width:36%;background:linear-gradient(90deg,transparent,var(--gold),transparent);animation:slide 1.25s var(--ease) infinite}
@keyframes slide{0%{transform:translateX(-120%)}100%{transform:translateX(420%)}}

/* ============================== ARRIVAL + FOYER ============================== */
#arrival{position:fixed;inset:0;z-index:40;background:#000}
#hero,#still{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
#still{background:#000 center/cover no-repeat;opacity:0}
#arrival .grade{position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(8,7,10,.38),transparent 24%,transparent 44%,rgba(8,7,10,.82))}
#filmTitle{position:absolute;left:0;right:0;bottom:13vh;text-align:center;opacity:0;transform:translateY(14px);pointer-events:none}
#filmTitle .eye{font-size:11px;letter-spacing:.42em;text-transform:uppercase;color:var(--gold-soft);margin-bottom:13px;text-shadow:0 1px 8px rgba(0,0,0,.9),0 0 20px rgba(0,0,0,.6)}
#filmTitle h2{font-family:var(--serif);font-weight:330;font-size:clamp(28px,4.4vw,56px);line-height:1.04;margin:0;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.92),0 1px 3px rgba(0,0,0,.95),0 0 46px rgba(0,0,0,.55)}
#filmTitle h2 em{font-style:italic;color:var(--gold)}
#scrollcue{position:absolute;left:50%;bottom:8vh;transform:translateX(-50%);font-size:10.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--cream-dim);opacity:0;cursor:pointer;text-shadow:0 1px 8px rgba(0,0,0,.9)}
#scrollcue::after{content:"";display:block;width:1px;height:22px;margin:10px auto 0;background:linear-gradient(var(--gold),transparent);animation:cue 1.8s var(--ease) infinite}
@keyframes cue{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

#skipBtn{position:absolute;top:24px;right:26px;z-index:5;display:none;align-items:center;gap:8px;height:40px;padding:0 18px;
  border-radius:30px;border:1px solid rgba(244,239,230,.4);background:rgba(11,11,13,.32);backdrop-filter:blur(8px);
  font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:#fff;transition:.25s var(--ease)}
#skipBtn.show{display:inline-flex}
#skipBtn:hover,#skipBtn:focus-visible{border-color:var(--gold);color:var(--gold);outline:none}
#enterBtn{position:absolute;inset:0;margin:auto;width:max-content;height:max-content;z-index:3;display:none;
  flex-direction:column;align-items:center;gap:14px}
#enterBtn.show{display:flex}
#enterBtn .play{width:74px;height:74px;border-radius:50%;border:1px solid rgba(244,239,230,.5);display:grid;place-items:center;
  background:rgba(11,11,13,.3);backdrop-filter:blur(4px);transition:.3s var(--ease)}
#enterBtn:hover .play{border-color:var(--gold);box-shadow:0 0 40px -8px rgba(232,180,90,.6)}
#enterBtn .lbl{font-size:12px;letter-spacing:.26em;text-transform:uppercase}

/* FOYER: the "living room" exit frame: the book on the left, where-to-buy on the right */
#foyer{position:absolute;inset:0;z-index:4;display:none;align-items:center;justify-content:center;padding:4vh 5vw;
  background:linear-gradient(180deg,rgba(5,4,7,.84),rgba(5,4,7,.66) 38%,rgba(5,4,7,.92))}
#foyer.show{display:flex}
#foyer .finner{width:min(1200px,96vw);display:flex;flex-direction:column;gap:clamp(18px,3vh,38px)}
#foyer .fhead{text-align:center}
#foyer .fhead .eye{font-size:11px;letter-spacing:.42em;text-transform:uppercase;color:var(--gold-soft);margin-bottom:13px}
#foyer .fhead h1{font-family:var(--serif);font-weight:330;font-size:clamp(27px,4.4vw,54px);line-height:1.03;margin:0 0 10px;letter-spacing:-.015em;color:#fff;text-shadow:0 3px 40px rgba(0,0,0,.5)}
#foyer .fhead h1 em{font-style:italic;color:var(--gold)}
#foyer .fhead .fsub{max-width:56ch;margin:0 auto;font-size:clamp(13px,1.5vw,16px);line-height:1.55;color:var(--cream-dim);text-shadow:0 1px 16px rgba(0,0,0,.6)}
#foyer .fcols{display:grid;grid-template-columns:.82fr 1.18fr;gap:clamp(24px,4vw,64px);align-items:center}
@media(max-width:860px){#foyer .fcols{grid-template-columns:1fr;gap:22px}#foyer .fbook{display:none}}
#foyer .fbook{display:flex;justify-content:center}
#foyer .fbuy{max-width:540px}
#foyer .beye{font-size:10.5px;letter-spacing:.32em;text-transform:uppercase;color:var(--gold);margin-bottom:15px}
.boffer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 18px;border:1px solid var(--line);border-radius:12px;
  margin-bottom:10px;background:rgba(17,15,20,.62);backdrop-filter:blur(8px);transition:.25s var(--ease);color:var(--cream)}
.boffer:hover{border-color:rgba(232,180,90,.55);transform:translateY(-2px)}
.boffer .m b{font-family:var(--serif);font-weight:440;font-size:16.5px;display:block}
.boffer .m small{font-size:11.5px;color:var(--warm);display:block;margin-top:2px}
.boffer .arr{color:var(--gold);font-size:17px;flex:none}
.boffer.lead{border-color:rgba(232,180,90,.5);background:linear-gradient(120deg,rgba(232,180,90,.14),rgba(232,180,90,.03))}
.boffer .pair{display:flex;gap:8px;flex:none}
.boffer .pair a{display:inline-flex;align-items:center;height:36px;padding:0 15px;border-radius:24px;border:1px solid var(--line);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--cream);transition:.2s var(--ease)}
.boffer .pair a:hover{border-color:var(--gold);color:var(--gold)}
#foyer .fexplore{margin-top:18px;width:100%;justify-content:center}
#foyer .ffoot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px 24px;border-top:1px solid rgba(255,255,255,.12);padding-top:16px;
  font-size:12px;color:var(--cream-dim);letter-spacing:.02em;text-shadow:0 1px 10px #000}
#foyer .ffoot a{color:#fff;border-bottom:1px solid rgba(232,180,90,.5)}
#foyer .ffoot a:hover{color:var(--gold)}
#foyer .fcopy{color:var(--warm)}

.bigbtn{display:inline-flex;align-items:center;gap:11px;height:54px;padding:0 30px;border-radius:40px;font-size:15px;font-weight:500;
  letter-spacing:.01em;background:linear-gradient(180deg,var(--gold),var(--gold-deep));color:#1a1206;
  box-shadow:0 14px 40px -14px rgba(232,180,90,.8);transition:.25s var(--ease)}
.bigbtn:hover,.bigbtn:focus-visible{transform:translateY(-2px);box-shadow:0 20px 50px -16px rgba(232,180,90,.95);outline:none;color:#140e04}
.bigbtn svg{width:18px;height:18px}

/* ============================== HUD (in the showroom) ============================== */
#hud{position:fixed;inset:0;z-index:30;pointer-events:none;opacity:0;transition:opacity .8s var(--ease)}
#hud.show{opacity:1}
#hud .on{pointer-events:auto}

#exitBtn{position:fixed;top:22px;left:24px;pointer-events:auto;display:inline-flex;align-items:center;gap:9px;height:42px;padding:0 18px;
  border-radius:30px;border:1px solid rgba(232,180,90,.45);background:var(--glass);backdrop-filter:blur(10px);
  font-size:12.5px;letter-spacing:.04em;color:var(--cream);transition:.25s var(--ease)}
#exitBtn:hover,#exitBtn:focus-visible{border-color:var(--gold);color:var(--gold);outline:none}
#exitBtn svg{width:15px;height:15px}

#brand{position:fixed;top:24px;left:50%;transform:translateX(-50%);text-align:center;pointer-events:none}
#brand .k{font-size:9px;letter-spacing:.34em;text-transform:uppercase;color:var(--gold);margin-bottom:4px;text-shadow:0 1px 8px rgba(0,0,0,.95),0 0 16px rgba(0,0,0,.7)}
#brand .t{font-family:var(--serif);font-size:15px;color:#fff;text-shadow:0 2px 9px rgba(0,0,0,.92),0 1px 2px rgba(0,0,0,.95),0 0 22px rgba(0,0,0,.6)}
#brand .t em{font-style:italic;color:var(--gold)}

#hudRight{position:fixed;top:22px;right:24px;display:flex;gap:10px}
.hbtn{pointer-events:auto;display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 16px;border-radius:30px;
  border:1px solid rgba(232,180,90,.3);background:var(--glass);backdrop-filter:blur(10px);
  font-size:12px;letter-spacing:.06em;color:var(--cream);transition:.25s var(--ease)}
.hbtn:hover,.hbtn:focus-visible{border-color:var(--gold);color:var(--cream);outline:none}
.hbtn svg{width:15px;height:15px;flex:none}
.hbtn.primary{background:linear-gradient(180deg,var(--gold),var(--gold-deep));color:#1a1206;border-color:transparent;font-weight:600}
.hbtn.primary:hover{box-shadow:0 10px 30px -12px rgba(232,180,90,.85);color:#140e04}
.hbtn .dot{width:7px;height:7px;border-radius:50%;background:#1a1206}

/* the persistent control legend, always clearly visible */
#controls{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);display:flex;align-items:center;gap:0;
  background:var(--glass);border:1px solid rgba(232,180,90,.28);border-radius:14px;backdrop-filter:blur(12px);
  padding:11px 8px;box-shadow:0 16px 40px -18px rgba(0,0,0,.8)}
#controls .grp{display:flex;align-items:center;gap:10px;padding:0 16px}
#controls .grp + .grp{border-left:1px solid var(--line)}
#controls .keys{display:flex;gap:4px}
#controls kbd{font-family:var(--sans);font-size:11px;min-width:24px;height:24px;padding:0 6px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(232,180,90,.45);border-radius:6px;color:var(--cream);background:rgba(232,180,90,.06);font-weight:500}
#controls .lab{font-size:11.5px;letter-spacing:.04em;color:var(--cream-dim)}
#controls .lab b{color:var(--gold);font-weight:600}
@media (max-width:880px){#controls .grp{padding:0 10px}#controls kbd{min-width:20px;height:20px;font-size:10px}}

/* hover tooltip on an exhibit */
#tip{position:fixed;z-index:34;pointer-events:none;max-width:280px;background:rgba(11,11,13,.86);
  border:1px solid rgba(232,180,90,.4);border-radius:12px;padding:11px 14px;backdrop-filter:blur(10px);
  box-shadow:0 16px 44px rgba(0,0,0,.5);opacity:0;transform:translateY(6px);transition:opacity .16s var(--ease),transform .16s var(--ease)}
#tip.show{opacity:1;transform:translateY(0)}
#tip .t{font-family:var(--serif);font-size:15.5px;line-height:1.2;color:var(--cream)}
#tip .hintread{margin-top:6px;font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold)}

/* click-an-exhibit read card */
#readcard{position:fixed;left:0;right:0;bottom:0;z-index:36;display:flex;justify-content:center;padding:0 0 11vh;
  pointer-events:none;opacity:0;transform:translateY(20px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
#readcard.show{opacity:1;transform:translateY(0)}
#readcard.show .rc{pointer-events:auto}   /* the hidden card must not steal touches (e.g. from the joystick) */
#readcard .rc{pointer-events:none;width:min(560px,92vw);text-align:center;
  background:linear-gradient(180deg,rgba(20,17,12,.92),rgba(11,10,12,.94));border:1px solid rgba(232,180,90,.35);
  border-radius:16px;padding:26px 30px 22px;backdrop-filter:blur(14px);box-shadow:0 30px 80px -30px #000;position:relative}
#readcard .num{font-size:10.5px;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);margin-bottom:11px}
#readcard h3{font-family:var(--serif);font-weight:360;font-size:clamp(22px,3vw,32px);line-height:1.1;margin:0 0 12px;color:var(--cream)}
#readcard .rcaction{display:none;margin:4px auto 0;align-items:center;gap:7px;height:40px;padding:0 22px;border-radius:30px;
  background:linear-gradient(180deg,var(--gold),var(--gold-deep));color:#1a1206;font-size:12px;letter-spacing:.05em;font-weight:600;transition:.25s var(--ease)}
#readcard .rcaction:hover,#readcard .rcaction:focus-visible{box-shadow:0 8px 24px -10px rgba(232,180,90,.9);color:#140e04;outline:none}
#readcard .teaser{font-size:15px;color:var(--cream-dim);line-height:1.5;margin:0 0 10px}

/* slowly-orbiting CSS-3D book model (buy panels) */
.book3d{--bw:242px;--bh:363px;--bd:25px;width:var(--bw);height:var(--bh);margin:0 auto;perspective:1400px;perspective-origin:50% 46%}
@media(max-width:720px){.book3d{--bw:200px;--bh:300px;--bd:22px}}
.b3rot{position:relative;width:100%;height:100%;transform-style:preserve-3d;animation:b3spin 20s linear infinite;will-change:transform}
@keyframes b3spin{from{transform:rotateX(-9deg) rotateY(-20deg)}to{transform:rotateX(-9deg) rotateY(340deg)}}
@media(prefers-reduced-motion:reduce){.b3rot{animation:none;transform:rotateX(-9deg) rotateY(-24deg)}}
.b3f{position:absolute;overflow:hidden;backface-visibility:hidden}
.b3f img{width:100%;height:100%;object-fit:cover;display:block}
.b3front,.b3back{width:var(--bw);height:var(--bh);left:calc(50% - var(--bw)/2);top:calc(50% - var(--bh)/2)}
.b3front{transform:translateZ(calc(var(--bd)/2))}
.b3back{transform:rotateY(180deg) translateZ(calc(var(--bd)/2))}
.b3spine,.b3edge{width:var(--bd);height:var(--bh);left:calc(50% - var(--bd)/2);top:calc(50% - var(--bh)/2)}
.b3spine{transform:rotateY(-90deg) translateZ(calc(var(--bw)/2))}
.b3edge{transform:rotateY(90deg) translateZ(calc(var(--bw)/2));background:linear-gradient(90deg,#efe7d2,#cfc6ac 50%,#efe7d2)}
.b3top,.b3bot{width:var(--bw);height:var(--bd);left:calc(50% - var(--bw)/2);top:calc(50% - var(--bd)/2);background:linear-gradient(180deg,#efe7d2,#cfc6ac 50%,#efe7d2)}
.b3top{transform:rotateX(90deg) translateZ(calc(var(--bh)/2))}
.b3bot{transform:rotateX(-90deg) translateZ(calc(var(--bh)/2))}
#readcard .visual{font-size:12px;color:var(--warm);letter-spacing:.02em}
#readcard .visual b{color:var(--gold-deep);text-transform:uppercase;letter-spacing:.16em;font-size:10px;font-weight:600}
#readcard .rcnav{display:flex;gap:9px;justify-content:center;align-items:center;margin-top:20px}
#readcard .rcnav button{pointer-events:auto;height:38px;border:1px solid var(--line);border-radius:30px;color:var(--cream-dim);transition:.25s var(--ease)}
#readcard .rcnav .arw{width:42px;display:grid;place-items:center}
#readcard .rcnav .cl{padding:0 18px;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase}
#readcard .rcnav button:hover,#readcard .rcnav button:focus-visible{border-color:var(--gold);color:var(--gold);outline:none}

/* ============================== ONBOARDING ============================== */
#onboard{position:fixed;inset:0;z-index:46;display:none;place-items:center start;padding:24px;padding-left:clamp(20px,4vw,60px);
  background:radial-gradient(closest-side at 22% 50%,rgba(6,5,8,.5),transparent 60%);pointer-events:none;
  opacity:0;transition:opacity .5s var(--ease)}
@media(max-width:720px){#onboard{place-items:end center;padding:0 20px 10vh;background:radial-gradient(closest-side at 50% 82%,rgba(6,5,8,.5),transparent 70%)}}
#onboard.show{display:grid;opacity:1}
#onboard.fade{opacity:0}
#onboard .ocard{pointer-events:auto;width:min(420px,90vw);text-align:left;background:linear-gradient(180deg,rgba(27,24,18,.96),rgba(16,14,20,.97));
  border:1px solid rgba(232,180,90,.36);border-radius:20px;padding:30px 36px 28px;box-shadow:0 50px 120px -40px #000;backdrop-filter:blur(14px);
  transform:translateY(16px) scale(.98);transition:transform .5s var(--ease)}
#onboard.show .ocard{transform:none}
#onboard .eye{font-size:10.5px;letter-spacing:.34em;text-transform:uppercase;color:var(--gold);margin-bottom:12px}
#onboard h2{font-family:var(--serif);font-weight:340;font-size:clamp(24px,3.4vw,34px);margin:0 0 8px}
#onboard .osub{font-size:14px;color:var(--cream-dim);line-height:1.5;margin:0 0 26px;max-width:42ch;margin-inline:auto}
#onboard .okeys{display:grid;gap:14px;text-align:left;margin:0 0 28px;padding:0;list-style:none}
#onboard .okeys li{display:flex;align-items:center;gap:16px}
#onboard .okeys .glyph{flex:none;display:flex;gap:4px;min-width:124px}
#onboard .okeys kbd{font-family:var(--sans);font-size:12px;min-width:30px;height:30px;padding:0 8px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(232,180,90,.5);border-radius:7px;background:rgba(232,180,90,.08);font-weight:500}
#onboard .okeys .d{font-size:13.5px;color:var(--cream-dim);line-height:1.4}
#onboard .okeys .d b{color:var(--cream);font-weight:600}

/* ============================== MODALS (CTA / DIRECTORY) ============================== */
.scrim{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:5vh 20px;background:rgba(5,4,7,.78);
  backdrop-filter:blur(10px);opacity:0;pointer-events:none;transition:opacity .35s var(--ease)}
.scrim.open{opacity:1;pointer-events:auto}
.sheet{width:min(860px,94vw);max-height:90vh;overflow:auto;background:linear-gradient(180deg,#181620,#100e14);
  border:1px solid var(--line);border-radius:16px;box-shadow:0 50px 120px -40px #000;position:relative;
  transform:translateY(18px) scale(.985);transition:transform .5s var(--ease)}
.scrim.open .sheet{transform:none}
.sheet .x{position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--cream-dim);transition:.25s var(--ease);z-index:3}
.sheet .x:hover,.sheet .x:focus-visible{border-color:var(--gold);color:var(--gold);outline:none}
.sheet .pad{padding:clamp(28px,4vw,46px)}
.sheet .eye{font-size:10.5px;letter-spacing:.34em;text-transform:uppercase;color:var(--gold);margin-bottom:13px}
.sheet h3{font-family:var(--serif);font-weight:340;font-size:clamp(26px,3.6vw,40px);line-height:1.05;margin:0 0 8px}
.sheet .sub{color:var(--cream-dim);font-size:14.5px;line-height:1.55;margin:0 0 26px;max-width:54ch}

.offer{display:flex;gap:20px;align-items:center;padding:20px 22px;border:1px solid var(--line);border-radius:12px;margin-bottom:14px;
  transition:.3s var(--ease);background:rgba(255,255,255,.012)}
.offer:hover,.offer:focus-visible{border-color:rgba(232,180,90,.6);transform:translateY(-2px);outline:none}
.offer.lead{border-color:rgba(232,180,90,.45);background:linear-gradient(120deg,rgba(232,180,90,.1),rgba(232,180,90,.02))}
.offer .ic{width:46px;height:46px;border-radius:11px;flex:none;display:grid;place-items:center;background:rgba(232,180,90,.12);color:var(--gold);border:1px solid rgba(232,180,90,.28)}
.offer .ic svg{width:22px;height:22px}
.offer .meta{flex:1;min-width:0}
.offer .meta .h{display:block;font-family:var(--serif);font-size:19px;line-height:1.2;margin-bottom:4px}
.offer .meta .d{display:block;font-size:12.5px;color:var(--warm);line-height:1.45}
.offer .go{flex:none;display:inline-flex;align-items:center;gap:7px;height:42px;padding:0 18px;border-radius:30px;border:1px solid var(--line);
  font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--cream);transition:.25s var(--ease)}
.offer .go:hover,.offer .go:focus-visible{border-color:var(--gold);color:var(--gold);outline:none}
.offer.lead .go{background:linear-gradient(180deg,var(--gold),var(--gold-deep));color:#1a1206;border-color:transparent;font-weight:600}
.offer .pair{display:flex;gap:8px;flex:none}
.offer .pair .go{height:40px;padding:0 15px}
.ctafoot{margin:20px 0 0;text-align:center;font-size:11.5px;color:var(--warm);letter-spacing:.02em;border-top:1px solid var(--line);padding-top:18px}

/* book page: book on the left, where-to-buy on the right, OVER the live gallery */
#cta{background:rgba(8,6,10,.5);backdrop-filter:blur(6px)}
#cta .sheet{width:min(940px,94vw)}
.bpcols{display:grid;grid-template-columns:.64fr 1fr;gap:clamp(22px,3.5vw,46px);align-items:center}
@media(max-width:720px){.bpcols{grid-template-columns:1fr;gap:20px}.bpbook{max-width:190px;margin:0 auto}}
.bpbuy .eye{margin-bottom:9px}
.bpbuy h3{margin-bottom:10px}
.bpbuy h3 em{font-style:italic;color:var(--gold)}
.bpbuy .ctafoot{margin-top:16px;text-align:left}

#directory .dirnote{color:var(--warm);font-size:12.5px;margin:-10px 0 26px;letter-spacing:.02em}
#directory .dirnote b{color:var(--gold-deep)}
.dirgrid{columns:2;column-gap:42px}
@media(max-width:680px){.dirgrid{columns:1}}
.dirgroup{break-inside:avoid;margin-bottom:24px}
.dirgroup h4{font-size:10.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--gold);margin:0 0 12px;padding-bottom:9px;border-bottom:1px solid var(--line)}
.dirgroup ol{list-style:none;margin:0;padding:0}
.dirgroup li{display:flex;gap:12px;padding:6px 0;font-size:14px;color:var(--cream-dim);line-height:1.35;align-items:baseline}
.dirgroup li .n{font-family:var(--serif);font-size:12px;color:var(--warm);min-width:22px;font-variant-numeric:tabular-nums}
.dirgroup li.shown .t{color:var(--cream)}
.dirgroup li.shown .n{color:var(--gold)}
.dirgroup li .star{color:var(--gold);font-size:10px;opacity:0;margin-left:auto}
.dirgroup li.shown .star{opacity:1}

/* authors modal */
.authgrid{display:grid;grid-template-columns:1fr 1fr;gap:34px;margin-top:6px}
@media(max-width:700px){.authgrid{grid-template-columns:1fr;gap:26px}}
.authperson{display:flex;gap:20px;align-items:flex-start}
.authperson img{width:104px;height:104px;border-radius:14px;object-fit:cover;border:1px solid rgba(232,180,90,.4);flex:none}
.authperson .ai{min-width:0}
.authperson .an{font-family:var(--serif);font-weight:420;font-size:22px;line-height:1.1;margin-bottom:5px}
.authperson .ar{font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);margin-bottom:12px}
.authperson .ab{font-size:13.5px;line-height:1.56;color:var(--cream-dim);margin:0 0 15px}
.authperson .alink{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 16px;border-radius:30px;border:1px solid var(--line);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--cream);transition:.25s var(--ease)}
.authperson .alink:hover,.authperson .alink:focus-visible{border-color:var(--gold);color:var(--gold);outline:none}

/* ============================== FALLBACK + MOBILE ============================== */
#fallback{position:fixed;inset:0;z-index:70;display:none;place-items:center;padding:36px;overflow:auto;
  background:radial-gradient(120% 90% at 50% 30%,#2a2114,#15110b 55%,#0B0B0D)}
#fallback.show{display:grid}
#fallback .w{max-width:520px;text-align:center}
#fallback img{width:150px;border-radius:8px;box-shadow:0 24px 60px rgba(0,0,0,.6);border:1px solid rgba(232,180,90,.4)}
#fallback h2{font-family:var(--serif);font-weight:400;font-size:28px;margin:20px 0 8px}
#fallback p{color:var(--warm);font-size:14px;line-height:1.55}
#fallback .acts{display:grid;gap:9px;max-width:340px;margin:20px auto 0}
#fallback a{padding:12px 16px;border-radius:11px;font-weight:600;font-size:13.5px;border:1px solid rgba(232,180,90,.3)}
#fallback a.primary{background:var(--gold);color:var(--ink)}

#mobile{position:fixed;inset:0;z-index:80;overflow-y:auto;display:none;background:var(--ink)}
body.is-mobile #mobile{display:block}
body.is-mobile #app,body.is-mobile #arrival,body.is-mobile #hud,body.is-mobile #loader{display:none}
#mobile .mhero{position:relative;min-height:84vh;display:flex;flex-direction:column;justify-content:flex-end;padding:30px 22px 36px;background:#000}
#mobile .mhero video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
#mobile .mhero .grad{position:absolute;inset:0;background:linear-gradient(transparent,rgba(8,7,10,.5) 50%,var(--ink))}
#mobile .mhero .in{position:relative}
#mobile .eye{font-size:10px;letter-spacing:.34em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
#mobile h1{font-family:var(--serif);font-weight:330;font-size:34px;line-height:1.05;margin:0 0 14px}
#mobile h1 em{font-style:italic;color:var(--gold)}
#mobile .msub{color:var(--cream-dim);font-size:14.5px;line-height:1.55;margin:0 0 22px}
#mobile .mcta{display:flex;flex-direction:column;gap:10px}
#mobile .mbtn{display:flex;align-items:center;justify-content:space-between;padding:15px 18px;border-radius:12px;border:1px solid var(--line);font-size:14px;background:rgba(255,255,255,.02)}
#mobile .mbtn.lead{background:linear-gradient(180deg,var(--gold),var(--gold-deep));color:#160f04;border:0;font-weight:600}
#mobile .mbtn small{display:block;font-size:11px;font-weight:400;color:var(--warm);margin-top:2px}
#mobile .mbtn.lead small{color:rgba(20,14,4,.7)}
#mobile .msec{padding:34px 22px}
#mobile .msec h3{font-family:var(--serif);font-weight:360;font-size:23px;margin:0 0 6px}
#mobile .msec p.k{font-size:11px;letter-spacing:.28em;text-transform:uppercase;color:var(--gold);margin:0 0 16px}
#mobile .mstrip{display:grid;grid-template-columns:1fr 1fr;gap:10px}
#mobile .mtile{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#100e14}
#mobile .mtile img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;opacity:.95}
#mobile .mtile .c{padding:9px 11px;font-family:var(--serif);font-size:13px;line-height:1.2;color:var(--cream)}
#mobile .mfoot{padding:30px 22px 50px;border-top:1px solid var(--line);color:var(--warm);font-size:12.5px;text-align:center}
#mobile .mfoot a{color:var(--cream-dim)}

@media (prefers-reduced-motion: reduce){
  #loader .bar i,#scrollcue::after{animation:none}
}

/* ===================================================================
   TOUCH / PHONE: the full walkable showroom, driven by finger
   (only applies on touch devices; desktop is untouched)
   =================================================================== */
/* the keyboard legend and hover tooltip make no sense on a touch screen */
body.is-touch #controls,
body.is-touch #tip{ display:none !important; }

/* onboarding: swap the keyboard hints for finger hints (ID-level specificity to beat #onboard .okeys) */
#onboard .okeys.touchkeys{ display:none; }
body.is-touch #onboard .okeys:not(.touchkeys){ display:none; }
body.is-touch #onboard .okeys.touchkeys{ display:grid; }
body.is-touch #onboard .okeys .glyph{ min-width:92px; }

/* a slim, always-visible gesture reminder, low and centred (inside the HUD, so it fades with it) */
#touchhint{ display:none; }
body.is-touch #hud.show #touchhint{ display:block; position:fixed; left:50%; bottom:calc(18px + env(safe-area-inset-bottom));
  transform:translateX(-50%); pointer-events:none; max-width:92vw; text-align:center; white-space:nowrap; overflow:hidden;
  text-overflow:ellipsis; font-size:11px; letter-spacing:.02em; color:var(--cream-dim); background:var(--glass);
  border:1px solid rgba(232,180,90,.26); border-radius:30px; padding:7px 15px; backdrop-filter:blur(10px);
  box-shadow:0 10px 28px -16px rgba(0,0,0,.8); }

/* the virtual walking joystick (lives inside #hud, shows/hides with it) */
#joy{ display:none; }
body.is-touch #hud.show #joy{ display:flex; position:fixed; left:calc(20px + env(safe-area-inset-left));
  bottom:calc(46px + env(safe-area-inset-bottom)); width:120px; height:120px; border-radius:50%; pointer-events:auto;
  touch-action:none; align-items:center; justify-content:center;
  background:radial-gradient(circle at 50% 45%, rgba(22,18,12,.46), rgba(18,15,11,.22)); border:1px solid rgba(232,180,90,.34);
  backdrop-filter:blur(6px); box-shadow:0 16px 42px -18px rgba(0,0,0,.85); transition:border-color .2s var(--ease); }
#joy.active{ border-color:var(--gold); }
#joyKnob{ width:54px; height:54px; border-radius:50%; background:linear-gradient(180deg, rgba(244,239,230,.95), rgba(232,180,90,.8));
  border:1px solid rgba(255,255,255,.55); box-shadow:0 5px 16px rgba(0,0,0,.5); transition:transform .05s linear; }

/* while reading an exhibit, or with any panel open, get the joystick + hint out of the way */
body.is-touch.reading #hud.show #joy,
body.is-touch.reading #hud.show #touchhint{ display:none; }
body.is-touch:has(.scrim.open) #hud.show #joy,
body.is-touch:has(.scrim.open) #hud.show #touchhint{ display:none; }

/* phones: compact the top HUD so the buttons never collide */
@media (max-width:560px){
  #brand{ display:none; }
  #exitBtn{ top:calc(14px + env(safe-area-inset-top)); left:calc(13px + env(safe-area-inset-left));
    height:40px; width:40px; padding:0; justify-content:center; gap:0; }
  #exitBtn span{ display:none; }
  #hudRight{ top:calc(14px + env(safe-area-inset-top)); right:calc(12px + env(safe-area-inset-right)); gap:8px; }
  .hbtn{ height:40px; padding:0 12px; font-size:11px; }
  #recenterBtn span,#dirBtn span{ display:none; }          /* Center + The Fifty become icon-only */
  #recenterBtn,#dirBtn{ width:40px; padding:0; justify-content:center; }
}
/* very small / portrait: let the read card clear the bottom controls */
@media (max-width:560px){
  #readcard{ padding-bottom:13vh; }
}

/* ===================================================================
   PHONE LAYOUT FIXES: opening titles, the arrival card, the buy modal
   (scoped to phone widths; desktop and tablet layouts are untouched)
   =================================================================== */
@media (max-width:560px){
  /* 1) opening loader: centre the title block (the 16ch box had no auto margins, so it sat left) */
  #loader > div{ width:100%; max-width:min(92vw,540px); }
  #loader h1{ margin-left:auto; margin-right:auto; }

  /* 2) arrival film card: drop the "opens in a moment" cue (it overlapped the wrapped title) and give the title room */
  #scrollcue{ display:none; }
  #filmTitle{ bottom:16vh; }

  /* 3) modals in general: tighter padding + sizes so nothing is cramped or clipped */
  .sheet .pad{ padding:34px 18px 28px; }
  .sheet .eye{ padding-right:46px; }   /* keep the (wrapping) eyebrow clear of the close X */
  .sheet h3{ font-size:23px; }
  .sheet .sub{ font-size:13.5px; line-height:1.5; margin-bottom:20px; max-width:none; }
  /* authors sheet: stack each photo over its bio so the text gets the full width */
  #authors .authperson{ flex-direction:column; gap:13px; }
  #authors .authperson img{ width:88px; height:88px; }

  /* 3b) the buy / book-detail modal: stack the book over the offers and never overflow the screen.
        (the .bpcols grid was sizing to max-content inside the scrollable sheet, clipping the content) */
  #cta .sheet{ width:94vw; }
  #cta .bpcols{ display:block; }
  #cta .book3d{ --bw:160px; --bh:240px; --bd:18px; }   /* compact, fits without clipping; foyer book stays larger */
  #cta .bpbook{ margin:0 auto 18px; }
  #cta .bpbuy{ min-width:0; }
  #cta .offer{ gap:13px; padding:14px 15px; margin-bottom:11px; }
  #cta .offer .ic{ width:40px; height:40px; border-radius:9px; }
  #cta .offer .ic svg{ width:19px; height:19px; }
  #cta .offer .meta .h{ font-size:15.5px; }
  #cta .offer .meta .d{ font-size:11.5px; line-height:1.4; }
  #cta .offer .go{ height:38px; padding:0 13px; font-size:11.5px; }
  #cta .offer .pair{ gap:6px; }
  #cta .offer .pair .go{ height:36px; padding:0 11px; }
  /* the two-button (Amazon) offer: drop the Kindle/Paperback pair onto its own line so the
     description keeps full width instead of being squeezed into ragged 2-word lines */
  #cta .offer{ flex-wrap:wrap; }
  #cta .offer .pair{ flex-basis:100%; margin-top:10px; padding-left:53px; }

  /* the orbiting 3D book: hold it still on phones so it always shows the cover (never edge-on) */
  .b3rot{ animation:none; transform:rotateX(-9deg) rotateY(-22deg); }

  /* 4) the cafe foyer: let tall content scroll instead of clipping the title at the top */
  #foyer{ align-items:flex-start; overflow-y:auto; -webkit-overflow-scrolling:touch; padding-top:7vh; padding-bottom:7vh; }
}

/* ===================================================================
   LANDSCAPE PHONES: the @media(max-width:560px) fixes above miss landscape
   phones (they are ~844px WIDE but very SHORT), so mirror the ones that
   matter here. orientation:landscape + max-height:560px isolates phones:
   iPad landscape (height >=768) and desktop (height >=600) never match,
   and the body.is-touch guard keeps any short desktop window untouched.
   =================================================================== */
@media (orientation:landscape) and (max-height:560px){
  body.is-touch #scrollcue{ display:none; }                 /* arrival cue no longer crosses the title */
  body.is-touch #filmTitle{ bottom:10vh; }
  body.is-touch #brand{ display:none; }                     /* stop the HUD brand colliding with the buttons */
  body.is-touch #foyer{ align-items:flex-start; overflow-y:auto; -webkit-overflow-scrolling:touch; padding-top:5vh; padding-bottom:5vh; }
}