/* ============================================================
   WORLD ART MUSEUM — interactive hall-walk theme
   ============================================================ */
:root{
  --paper:#f4f1ea; --paper-2:#ece7db;
  --ink:#2a2722; --ink-soft:#6c655a; --line:#d8d0bf;
  --gold:#b8923f; --gold-dark:#8a6d2a; --gold-light:#e6c97a;
  --blue:#3a6b8a; --hall-wall:#e9e3d4;
  --serif:"Playfair Display",Georgia,serif;
  --script:"Cormorant Garamond",Georgia,serif;
  --body:"PT Sans",system-ui,Arial,sans-serif;
  --maxw:1180px; --topbar-h:64px; --nav-h:96px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--paper);color:var(--ink-soft);
  font-family:var(--body);font-size:17px;line-height:1.7;overflow:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.serif-title{font-family:var(--serif);font-weight:900;color:var(--ink);line-height:1.05;letter-spacing:-.01em;margin:0}
.kicker{text-transform:uppercase;letter-spacing:.18em;font-size:.78rem;font-weight:700;color:var(--ink-soft);margin:0 0 .8rem}
.kicker--blue{color:var(--blue)}

/* ---------- brandmark ---------- */
.brandmark{display:flex;flex-direction:column;line-height:1}
.brandmark__script{font-family:var(--serif);font-style:italic;font-weight:700;font-size:1.45rem;color:var(--ink)}
.brandmark__sub{letter-spacing:.45em;font-size:.6rem;font-weight:700;color:var(--gold-dark);margin-top:.25rem}

/* ---------- top bar ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:60;height:var(--topbar-h);
  display:flex;align-items:center;gap:2rem;
  padding:0 clamp(1rem,4vw,2.5rem);
  background:rgba(244,241,234,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.mainnav{display:flex;gap:1.5rem;margin-left:auto}
.mainnav a{text-transform:uppercase;letter-spacing:.1em;font-size:.72rem;font-weight:700;color:var(--ink-soft);padding-bottom:2px;border-bottom:1px solid transparent;transition:.15s;cursor:pointer}
.mainnav a:hover,.mainnav a.is-current{color:var(--ink);border-color:var(--gold)}
.lang{font-family:var(--serif);font-weight:700;font-size:.85rem;width:44px;height:36px;border:1px solid var(--line);background:#fff;border-radius:3px;cursor:pointer;transition:.15s}
.lang:hover{border-color:var(--gold);color:var(--ink)}

/* ============================================================
   MUSEUM HALL BACKDROP (shared, fixed behind everything)
   ============================================================ */
.hall--bg{position:fixed;inset:0;z-index:0;background:#1c140d;pointer-events:none}
.hall__ceiling{position:absolute;top:0;left:0;right:0;height:24%;background:linear-gradient(#d9cbb0,#b89b78);box-shadow:inset 0 -18px 30px rgba(0,0,0,.25)}
.hall__wall{position:absolute;top:22%;left:0;right:0;height:50%;background:radial-gradient(130% 90% at 50% 0%, #f2ecdd, #d8cdb6 70%, #c3b698 100%);box-shadow:inset 0 0 140px rgba(90,61,40,.22)}
.hall__floor{position:absolute;bottom:0;left:0;right:0;height:30%;background:repeating-linear-gradient(90deg,#6b4a30 0 5px,#5a3d28 5px 10px),linear-gradient(#7a5638,#3a281a);transform:rotateX(60deg);transform-origin:top;box-shadow:0 -10px 40px rgba(0,0,0,.5)}
.hall__floor::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(40,25,15,.1),rgba(20,12,7,.7))}
.hall__lights{position:absolute;top:6%;left:0;right:0;display:flex;justify-content:center;gap:16vw;z-index:1}
.hall__lights span{width:9px;height:9px;border-radius:50%;background:#fff5d8;box-shadow:0 0 16px 8px rgba(255,234,170,.6)}
.wallframe{position:absolute;border:6px solid #9c7b3e;background:linear-gradient(135deg,#cdbf9e,#9f8e6b);box-shadow:0 10px 24px rgba(0,0,0,.4);z-index:1}
.wallframe--l1{left:3%;top:32%;width:84px;height:112px;transform:perspective(400px) rotateY(28deg)}
.wallframe--l2{left:12%;top:36%;width:64px;height:88px;transform:perspective(400px) rotateY(24deg);opacity:.8}
.wallframe--r1{right:3%;top:32%;width:84px;height:112px;transform:perspective(400px) rotateY(-28deg)}
.wallframe--r2{right:12%;top:36%;width:64px;height:88px;transform:perspective(400px) rotateY(-24deg);opacity:.8}

/* a soft paper veil so text is readable over the hall (kept subtle) */
.museum::before{content:"";position:fixed;inset:0;z-index:1;background:linear-gradient(180deg,rgba(244,241,234,.30),rgba(244,241,234,.55));pointer-events:none}

/* ============================================================
   THE TRACK OF HALLS (horizontal walk)
   ============================================================ */
.museum{position:fixed;inset:0;z-index:2;overflow:hidden}
.track{display:flex;height:100%;width:100%;transition:transform .65s cubic-bezier(.7,0,.2,1)}
.room{
  position:relative;flex:0 0 100%;width:100%;height:100%;
  display:flex;align-items:center;justify-content:center;
  padding:calc(var(--topbar-h) + 1.2rem) clamp(1rem,5vw,4rem) calc(var(--nav-h) + 1rem);
  overflow:auto;
}
/* gentle entrance for the active room's content */
.room__inner,.entrance,.twocol,.exhibits,.game,.patron,.guestgrid,.page__head{will-change:opacity,transform}
.room > *{opacity:0;transform:translateY(14px);transition:opacity .5s ease .15s, transform .5s ease .15s}
.room.is-active > *{opacity:1;transform:none}

/* ============================================================
   GILDED FRAMES
   ============================================================ */
.gframe{margin:0;display:inline-flex;flex-direction:column;align-items:center}
.gframe__mat{background:#fbf8f1;padding:clamp(.7rem,1.6vw,1.3rem);
  border:13px solid var(--gold);
  border-image:linear-gradient(135deg,#e9cf86,#b8923f 40%,#7d5f23 70%,#e9cf86) 1;
  box-shadow:0 2px 0 #6f5320 inset,0 -2px 0 #6f5320 inset,0 24px 50px rgba(0,0,0,.4),0 0 0 2px #5a4419;
  position:relative}
.gframe__mat::after{content:"";position:absolute;inset:0;pointer-events:none;box-shadow:inset 0 0 0 5px rgba(255,255,255,.35)}
.gframe__mat .lottie{width:min(330px,64vw);height:min(330px,64vw)}
.gframe--sm .gframe__mat .lottie{width:min(240px,52vw);height:min(240px,52vw)}
.plaque{margin-top:1rem;background:#2a2722;color:#f4eedd;border:1px solid #4a4438;border-radius:3px;padding:.55rem 1.1rem;text-align:center;max-width:340px;box-shadow:0 6px 16px rgba(0,0,0,.3)}
.plaque b{display:block;font-family:var(--serif);font-style:italic;font-weight:700;font-size:.98rem;color:#fff}
.plaque span{display:block;font-size:.72rem;color:#c9bfa6;margin-top:.15rem}
.plaque--sm{max-width:260px}

/* ============================================================
   ROOM 0 — ENTRANCE
   ============================================================ */
.entrance{display:grid;grid-template-columns:auto 1fr;gap:clamp(1.5rem,5vw,4rem);align-items:center;max-width:var(--maxw)}
.entrance__art{display:flex;justify-content:center}
.ticker{display:inline-flex;align-items:baseline;gap:.6rem;flex-wrap:wrap;font-family:var(--serif);font-weight:900;font-size:1.4rem;color:var(--gold-dark);margin:0 0 .4rem}
.ticker__net{font-family:var(--body);font-weight:700;font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}
.entrance__title{font-family:var(--serif);font-weight:900;color:var(--ink);font-size:clamp(3rem,8vw,6rem);line-height:.9;margin:.1rem 0 1rem;letter-spacing:-.02em}
.entrance__lead{font-size:1.1rem;max-width:46ch;margin:0 0 1.4rem}
.entrance__facts{list-style:none;display:flex;flex-wrap:wrap;gap:1.6rem;padding:0;margin:0 0 1.6rem}
.entrance__facts li{display:flex;flex-direction:column}
.entrance__facts b{font-family:var(--serif);font-size:1.6rem;font-weight:900;color:var(--ink)}
.entrance__facts span{font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-soft)}
.entrance__btns{display:flex;flex-wrap:wrap;gap:.8rem}

/* ============================================================
   ROOM 1 — ABOUT
   ============================================================ */
.twocol{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(2rem,6vw,4.5rem);align-items:center;max-width:var(--maxw)}
.twocol__art{display:flex;justify-content:center}
.twocol__text p{margin:0 0 1.1rem;font-size:1.06rem}
.twocol__text .serif-title{margin-bottom:1.1rem;font-size:clamp(2rem,5vw,3rem)}
.welcome{font-family:var(--script);font-style:italic;font-size:1.5rem;color:var(--ink)}

/* ============================================================
   ROOM 2 — EXHIBITS
   ============================================================ */
.room--exhibits{align-items:stretch}
.exhibits{display:grid;grid-template-columns:220px 1fr;gap:clamp(1.2rem,3vw,2.5rem);width:100%;max-width:1280px;align-self:center;height:100%}
.exhibits__side{align-self:start;padding-top:.5rem}
.exhibits__side .serif-title{font-size:clamp(1.8rem,4vw,2.6rem)}
.filters{list-style:none;margin:1.2rem 0;padding:0;display:flex;flex-direction:column;gap:.1rem}
.filters button{background:none;border:none;cursor:pointer;font-family:var(--serif);font-size:1.1rem;color:var(--ink-soft);padding:.2rem 0;transition:.12s}
.filters button:hover{color:var(--ink)}
.filters button.is-active{color:#fff;background:var(--ink);padding:.2rem .8rem;border-radius:2px}
.exhibits__count{margin-top:.8rem;font-size:.82rem}
.exhibits__scroll{overflow-y:auto;padding:.3rem .3rem 1rem;mask-image:linear-gradient(180deg,transparent,#000 18px,#000 calc(100% - 18px),transparent)}
.exhibits__grid{column-count:3;column-gap:12px}
@media (max-width:1100px){.exhibits__grid{column-count:2}}
.exhibit{break-inside:avoid;margin:0 0 12px;display:block;width:100%;background:none;border:none;padding:0;cursor:pointer;position:relative}
.exhibit__inner{position:relative;overflow:hidden;background:#fbf8f1;border:6px solid var(--gold);border-image:linear-gradient(135deg,#e9cf86,#b8923f 45%,#7d5f23 75%,#e9cf86) 1;box-shadow:0 8px 20px rgba(40,25,15,.18);transition:transform .18s ease,box-shadow .18s ease}
.exhibit:hover .exhibit__inner{transform:translateY(-3px);box-shadow:0 16px 36px rgba(40,25,15,.28)}
.exhibit:nth-child(4n+1) .exhibit__inner{aspect-ratio:1}
.exhibit:nth-child(4n+2) .exhibit__inner{aspect-ratio:3/4}
.exhibit:nth-child(4n+3) .exhibit__inner{aspect-ratio:1}
.exhibit:nth-child(4n) .exhibit__inner{aspect-ratio:4/5}
.exhibit__inner .lottie,.exhibit__inner img{width:100%;height:100%;object-fit:contain;padding:8%}
.exhibit__label{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(20,14,8,.86));color:#f4eedd;padding:1.3rem .7rem .5rem;font-family:var(--serif);font-style:italic;font-size:.88rem;opacity:0;transform:translateY(8px);transition:.2s}
.exhibit:hover .exhibit__label{opacity:1;transform:none}
.exhibit__label small{display:block;font-style:normal;font-family:var(--body);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:#c9bfa6}

/* ============================================================
   ROOM 3 — GAME (curator clicker)
   ============================================================ */
.room--game{align-items:stretch}
.game{display:flex;flex-direction:column;width:100%;max-width:1100px;align-self:center}
.game__head{text-align:center;margin-bottom:1.2rem}
.game__head .serif-title{font-size:clamp(1.8rem,5vw,2.8rem)}
.game__sub{max-width:54ch;margin:.5rem auto 0;font-size:.98rem}
.game__main{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.2rem,4vw,3rem);align-items:start}
.game__stage{display:flex;flex-direction:column;align-items:center;position:relative}
.gframe--game{cursor:pointer;user-select:none;transition:transform .07s ease}
.gframe--game:active{transform:scale(.96)}
.gframe--game .gframe__mat .lottie{width:min(280px,60vw);height:min(280px,60vw)}
.game__counter{margin-top:1rem;display:flex;align-items:baseline;gap:.5rem}
.game__counter b{font-family:var(--serif);font-weight:900;font-size:2.4rem;color:var(--ink)}
.game__counter span{text-transform:uppercase;letter-spacing:.12em;font-size:.78rem}
.game__rate{font-size:.84rem;color:var(--ink-soft);margin-top:.2rem}
.floaters{position:absolute;inset:0;pointer-events:none;overflow:visible}
.floater{position:absolute;font-family:var(--serif);font-weight:900;color:var(--gold-dark);animation:floatUp 1s ease-out forwards;font-size:1.3rem}
@keyframes floatUp{from{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-70px)}}

.game__shop{background:rgba(255,255,255,.7);border:1px solid var(--line);border-radius:6px;padding:1.2rem;max-height:64vh;overflow:auto}
.game__shopttl{font-size:1.3rem;margin-bottom:.8rem}
.shop{display:flex;flex-direction:column;gap:.6rem}
.upg{display:flex;align-items:center;gap:.8rem;text-align:left;background:#fff;border:1px solid var(--line);border-radius:4px;padding:.7rem .9rem;cursor:pointer;transition:.12s;font-family:inherit}
.upg:hover:not(:disabled){border-color:var(--gold);transform:translateY(-1px)}
.upg:disabled{opacity:.45;cursor:not-allowed}
.upg__icon{font-size:1.5rem;flex:0 0 auto}
.upg__body{flex:1}
.upg__name{font-family:var(--serif);font-weight:700;color:var(--ink);font-size:1rem}
.upg__desc{font-size:.76rem;color:var(--ink-soft)}
.upg__meta{text-align:right;font-size:.78rem}
.upg__cost{font-family:var(--serif);font-weight:900;color:var(--gold-dark);font-size:1rem}
.upg__own{display:block;font-size:.72rem;color:var(--ink-soft)}
.game__reset{margin-top:1rem;font-size:.7rem;opacity:.7}

/* ============================================================
   ROOM 4 — GUEST BOOK
   ============================================================ */
.room--guest{flex-direction:column}
.room--guest .page__head{text-align:center;margin-bottom:1.6rem}
.room--guest .page__head .serif-title{font-size:clamp(2rem,5vw,3rem)}
.guestgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.2rem;max-width:var(--maxw);width:100%}
.guest{background:#fff;border:1px solid var(--line);border-radius:4px;padding:1.4rem;box-shadow:0 8px 20px rgba(40,25,15,.06);position:relative}
.guest::before{content:"\201C";position:absolute;top:.1rem;right:1rem;font-family:var(--serif);font-size:3.5rem;color:var(--gold-light)}
.guest__who{font-family:var(--serif);font-weight:700;color:var(--ink)}
.guest__role{font-size:.74rem;text-transform:uppercase;letter-spacing:.1em;color:var(--gold-dark);margin-bottom:.6rem}
.guest__text{font-size:.94rem}

/* ============================================================
   ROOM 5 — PATRON
   ============================================================ */
.patron{max-width:780px;margin:0 auto;text-align:center}
.patron__title{font-size:clamp(1.8rem,5vw,3rem);color:var(--gold-dark);margin:.2rem 0 1rem}
.patron__lead{font-size:1.04rem;max-width:60ch;margin:0 auto 1.6rem}
.ledger{text-align:left;background:#fff;border:1px solid var(--line);border-radius:4px;box-shadow:0 10px 30px rgba(40,25,15,.08);overflow:hidden;margin-bottom:1.4rem}
.ledger__row{display:flex;justify-content:space-between;gap:1rem;padding:.8rem 1.3rem;border-bottom:1px solid var(--line);flex-wrap:wrap}
.ledger__row:last-child{border-bottom:none}
.ledger__row span{text-transform:uppercase;letter-spacing:.1em;font-size:.72rem;font-weight:700;color:var(--ink-soft)}
.ledger__row b{font-family:var(--serif);color:var(--ink);font-size:.98rem}
.acquire{margin-bottom:1.2rem}
.acquire__label{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;margin:0 0 .4rem}
.ca{display:flex;align-items:center;gap:.7rem;flex-wrap:wrap;justify-content:center;background:var(--ink);color:#f4eedd;border-radius:4px;padding:.8rem 1.1rem}
.ca code{font-family:ui-monospace,Consolas,monospace;font-size:.86rem;word-break:break-all;flex:1;min-width:200px;text-align:left}
.ca button{text-transform:uppercase;letter-spacing:.08em;font-size:.7rem;font-weight:700;background:var(--gold);color:#1c140d;border:none;border-radius:3px;padding:.5em 1em;cursor:pointer}
.howto{max-width:560px;margin:0 auto 1.4rem;text-align:left;background:#fff;border:1px solid var(--line);border-radius:4px;padding:.2rem 1.2rem}
.howto summary{cursor:pointer;font-family:var(--serif);font-style:italic;color:var(--ink);padding:.7rem 0;list-style:none}
.howto summary::-webkit-details-marker{display:none}
.howto__steps{margin:0 0 .8rem;padding-left:1.2rem}
.howto__steps li{margin:.4rem 0}
.howto__steps b{color:var(--ink);font-family:var(--serif)}
.patron__btns{display:flex;flex-wrap:wrap;gap:.7rem;justify-content:center;margin-bottom:1.2rem}
.patron__disc{font-size:.78rem;color:var(--ink-soft);max-width:60ch;margin:0 auto}

/* ---------- museum buttons ---------- */
.mbtn{text-transform:uppercase;letter-spacing:.1em;font-size:.76rem;font-weight:700;color:var(--ink);background:#fff;border:1px solid var(--ink);border-radius:2px;padding:.8em 1.3em;transition:.15s;cursor:pointer;font-family:var(--body)}
.mbtn:hover{background:var(--ink);color:#fff}
.mbtn--gold{background:var(--gold);border-color:var(--gold-dark);color:#1c140d}
.mbtn--gold:hover{background:var(--gold-dark);color:#fff}

/* ============================================================
   WALK NAVIGATION
   ============================================================ */
.walk{position:fixed;top:50%;transform:translateY(-50%);z-index:55;width:52px;height:52px;border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.85);backdrop-filter:blur(6px);color:var(--ink);font-size:2rem;line-height:1;cursor:pointer;box-shadow:0 6px 18px rgba(40,25,15,.15);transition:.15s}
.walk:hover{background:#fff;border-color:var(--gold);transform:translateY(-50%) scale(1.06)}
.walk--prev{left:clamp(.6rem,2vw,1.5rem)}
.walk--next{right:clamp(.6rem,2vw,1.5rem)}
.walk[disabled]{opacity:.3;cursor:not-allowed}

.roomnav{position:fixed;left:0;right:0;bottom:0;z-index:55;height:var(--nav-h);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;background:linear-gradient(transparent,rgba(244,241,234,.95) 40%);padding:0 1rem .6rem}
.roomnav__label{font-family:var(--serif);font-size:.95rem;color:var(--ink)}
.roomnav__label em{font-style:italic;color:var(--gold-dark)}
.roomnav__dots{display:flex;gap:.6rem}
.roomnav__dots button{width:11px;height:11px;border-radius:50%;border:1px solid var(--gold-dark);background:transparent;cursor:pointer;padding:0;transition:.15s}
.roomnav__dots button.is-active{background:var(--gold);transform:scale(1.25)}
.roomnav__hint{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);margin:0;opacity:.7}

/* ============================================================
   VIEWER (lightbox)
   ============================================================ */
.viewer{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;gap:1rem;padding:1.5rem;background:rgba(20,14,8,.9);backdrop-filter:blur(6px)}
.viewer.is-open{display:flex}
.viewer__frame .gframe__mat .lottie{width:min(60vmin,440px);height:min(60vmin,440px)}
.viewer__close{position:absolute;top:1rem;right:1.4rem;background:none;border:none;color:#f4eedd;font-size:1.8rem;cursor:pointer}
.viewer__nav{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#f4eedd;font-size:2rem;width:54px;height:54px;border-radius:50%;cursor:pointer;transition:.12s}
.viewer__nav:hover{background:rgba(255,255,255,.22)}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:calc(var(--nav-h) + 1rem);transform:translateX(-50%) translateY(180%);background:var(--ink);color:#f4eedd;padding:.7em 1.4em;border-radius:3px;font-family:var(--serif);font-style:italic;font-size:.95rem;transition:transform .25s ease, opacity .25s ease, visibility .25s;z-index:120;opacity:0;visibility:hidden;pointer-events:none}
.toast.is-show{transform:translateX(-50%) translateY(0);opacity:1;visibility:visible}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:860px){
  .mainnav{display:none}
  .entrance{grid-template-columns:1fr;text-align:center}
  .entrance__art{order:-1}
  .entrance__facts,.entrance__btns,.ticker{justify-content:center}
  .twocol{grid-template-columns:1fr;text-align:center}
  .twocol__text .serif-title{margin-top:1rem}
  .exhibits{grid-template-columns:1fr}
  .exhibits__side{position:static}
  .filters{flex-direction:row;flex-wrap:wrap;gap:.4rem;justify-content:center}
  .game__main{grid-template-columns:1fr}
  .game__shop{max-height:none}
  .walk{width:44px;height:44px;font-size:1.5rem}
}
@media (max-width:560px){
  .exhibits__grid{column-count:2}
}