:root{
  --ink:#4a352c;
  --muted:#7a655a;
  --paper:#fff8ec;
  --paper-2:#f7ead7;
  --cream:#fffdf6;
  --brick:#b86d5c;
  --brick-dark:#8c4d42;
  --gold:#d8a94b;
  --sage:#8aa58c;
  --blue:#87a8bb;
  --shadow:0 22px 60px rgba(91,56,38,.16);
  --soft-shadow:0 10px 26px rgba(91,56,38,.12);
  --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Nunito,system-ui,-apple-system,Segoe UI,sans-serif;
  color:var(--ink);
  background:linear-gradient(180deg,#fff6e8,#f7ead7 55%,#efe1cc);
  min-height:100vh;
}
button{font:inherit}
.paper-wash{
  position:fixed;inset:0;pointer-events:none;opacity:.42;z-index:-1;
  background:
    radial-gradient(circle at 10% 15%,rgba(184,109,92,.22),transparent 25%),
    radial-gradient(circle at 90% 12%,rgba(135,168,187,.26),transparent 27%),
    radial-gradient(circle at 30% 88%,rgba(138,165,140,.22),transparent 28%),
    linear-gradient(90deg,rgba(255,255,255,.24) 1px,transparent 1px),
    linear-gradient(rgba(255,255,255,.22) 1px,transparent 1px);
  background-size:auto,auto,auto,34px 34px,34px 34px;
}
a{color:inherit}
.topbar{max-width:1180px;margin:0 auto;padding:22px 24px;display:flex;justify-content:space-between;align-items:center}
.brand{font-family:Caveat,cursive;font-size:34px;text-decoration:none;font-weight:700}
.small-btn,.primary-btn,.ghost-btn,.secondary-btn{
  border:0;border-radius:999px;padding:12px 18px;font-weight:800;cursor:pointer;text-decoration:none;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.18s transform,.18s box-shadow,.18s background;
}
.small-btn{background:#fff7eb;color:var(--ink);box-shadow:var(--soft-shadow)}
.primary-btn{background:var(--brick);color:white;box-shadow:0 12px 24px rgba(184,109,92,.28)}
.ghost-btn{background:#fff7eb;color:var(--ink);box-shadow:var(--soft-shadow)}
.secondary-btn{background:#fff;border:1px solid rgba(122,101,90,.18);color:var(--ink)}
.small-btn:hover,.primary-btn:hover,.ghost-btn:hover,.secondary-btn:hover{transform:translateY(-2px)}

.hero{padding-bottom:34px}
.hero-grid{max-width:1180px;margin:0 auto;padding:32px 24px 20px;display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.eyebrow{letter-spacing:.16em;text-transform:uppercase;color:var(--brick-dark);font-size:13px;font-weight:900;margin:0 0 8px}
.hero h1{font-family:Caveat,cursive;font-size:86px;line-height:.92;margin:0 0 18px;color:#51382f}
.lead{font-size:22px;line-height:1.5;color:var(--muted);max-width:620px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-card{background:rgba(255,253,246,.78);border:1px solid rgba(122,101,90,.16);border-radius:38px;box-shadow:var(--shadow);padding:28px}
.hero-card img{width:100%;display:block;filter:drop-shadow(0 18px 18px rgba(91,56,38,.12))}

.section{max-width:1180px;margin:0 auto;padding:58px 24px}
.section-title{max-width:780px;margin-bottom:24px}
.section-title h2{font-family:Caveat,cursive;font-size:56px;line-height:1;margin:0 0 8px}
.section-title p:not(.eyebrow){color:var(--muted);font-size:18px;line-height:1.5}

.lexicon-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.flip-card{
  background:transparent;border:0;padding:0;perspective:1200px;height:180px;cursor:pointer;text-align:left;
}
.flip-card-inner{
  position:relative;display:block;width:100%;height:100%;transition:transform .7s;transform-style:preserve-3d;
}
.flip-card.flipped .flip-card-inner{transform:rotateY(180deg)}
.flip-card-face{
  position:absolute;inset:0;border-radius:24px;padding:18px;box-shadow:var(--soft-shadow);
  backface-visibility:hidden;border:1px solid rgba(122,101,90,.15);display:flex;flex-direction:column;justify-content:center;
}
.flip-card-front{
  background:linear-gradient(180deg,rgba(255,253,246,.94),rgba(247,234,215,.92));
}
.flip-card-back{
  background:linear-gradient(180deg,rgba(255,250,240,.98),rgba(245,232,215,.95));
  transform:rotateY(180deg);
}
.flip-card-label{
  font-size:12px;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:var(--brick-dark);margin-bottom:10px;
}
.flip-card strong{display:block;font-size:20px;line-height:1.18;margin-bottom:10px}
.flip-card span{display:block;color:var(--muted);font-size:15px;line-height:1.35}
.flip-card em{display:block;margin-top:10px;font-size:13px;color:#6a4d41}

.progress-wrap{display:flex;align-items:center;gap:18px;margin-bottom:22px}
.progress-line{height:14px;background:#ead8bf;border-radius:999px;flex:1;overflow:hidden;box-shadow:inset 0 1px 4px rgba(74,53,44,.13)}
.progress-line span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--sage),var(--gold),var(--brick));border-radius:999px;transition:width .3s}
.progress-wrap p{font-weight:900;color:var(--muted)}

.school-map-shell{display:block}
.school-map{
  position:relative;background:rgba(255,253,246,.88);border:1px solid rgba(122,101,90,.16);
  border-radius:34px;box-shadow:var(--shadow);padding:18px;max-width:920px;margin:0 auto;
}
.school-map img{width:100%;display:block;border-radius:24px}
.window-hotspot{
  position:absolute;border:2px solid rgba(255,255,255,.82);border-radius:14px;
  background:rgba(255,237,149,.28);box-shadow:0 0 0 2px rgba(184,109,92,.1),0 0 22px rgba(255,221,120,.34);
  cursor:pointer;transition:transform .18s ease, background .18s ease, box-shadow .18s ease;
}
.window-hotspot:hover,.window-hotspot:focus-visible{
  background:rgba(255,228,110,.52);transform:scale(1.07);box-shadow:0 0 0 2px rgba(184,109,92,.22),0 0 26px rgba(255,221,120,.62);
  outline:none;
}
.window-hotspot.completed{background:rgba(138,165,140,.42);box-shadow:0 0 0 2px rgba(138,165,140,.22),0 0 26px rgba(138,165,140,.44)}
.door-hotspot{border-radius:18px;background:rgba(255,231,160,.18)}
.door-hotspot:hover,.door-hotspot:focus-visible{background:rgba(255,225,120,.38)}
.door-hotspot.completed{background:rgba(138,165,140,.3)}
.window-hotspot span{
  position:absolute;right:-10px;top:-10px;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;background:#fff9ef;border:1px solid rgba(122,101,90,.15);font-size:12px;font-weight:900;color:var(--ink)
}
.window-legend{display:grid;gap:12px}
.legend-card{
  width:100%;border:1px solid rgba(122,101,90,.16);background:rgba(255,253,246,.88);border-radius:22px;box-shadow:var(--soft-shadow);
  padding:14px 16px;display:flex;align-items:flex-start;gap:12px;text-align:left;cursor:pointer;transition:.18s transform,.18s box-shadow;
}
.legend-card:hover{transform:translateY(-2px)}
.legend-card.completed{border-color:rgba(138,165,140,.55);background:rgba(243,250,244,.92)}
.legend-number{
  min-width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#f4e4cd;font-weight:900;color:#715345;
}
.legend-card strong{display:block;font-size:17px}
.legend-card small{display:block;color:var(--muted);margin-top:4px;line-height:1.4}

.room-stage{min-height:480px}
.empty-room,.active-room{background:rgba(255,253,246,.88);border:1px solid rgba(122,101,90,.16);border-radius:36px;box-shadow:var(--shadow);padding:28px}
.active-room-grid{display:grid;grid-template-columns:360px 1fr;gap:28px}
.active-room img{width:100%;border-radius:26px;background:#f5e6d1;border:1px solid rgba(122,101,90,.12)}
.room-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.pill{background:#f4e4cd;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:900;color:#715345}
.active-room h2{font-family:Caveat,cursive;font-size:56px;line-height:1;margin:0 0 8px}
.mission{font-size:19px;line-height:1.55;color:var(--muted);margin-bottom:20px}
.task-box{background:#fff9ef;border:1px dashed rgba(140,77,66,.38);border-radius:24px;padding:18px;margin:16px 0}
.task-box h4{margin:0 0 12px;font-size:18px}
.options{display:grid;gap:10px}
.choice{border:1px solid rgba(122,101,90,.17);background:white;border-radius:18px;padding:13px 14px;text-align:left;cursor:pointer;color:var(--ink);font-weight:800}
.choice.selected{background:#f2dfc7;border-color:var(--brick);box-shadow:0 0 0 3px rgba(184,109,92,.12)}
textarea,input,select{width:100%;font:inherit;border:1px solid rgba(122,101,90,.25);border-radius:18px;padding:14px;background:white;color:var(--ink);outline:none}
textarea:focus,input:focus,select:focus{border-color:var(--brick);box-shadow:0 0 0 3px rgba(184,109,92,.13)}
textarea{min-height:132px;resize:vertical}
.sentence-list,.prompt-list,.match-grid{display:grid;gap:13px}
.sentence-row{display:grid;grid-template-columns:1.2fr 1.8fr;gap:12px;align-items:center;background:rgba(255,255,255,.6);border-radius:18px;padding:10px}
.match-row{display:grid;grid-template-columns:1.4fr 1fr;gap:12px;align-items:center;background:rgba(255,255,255,.6);border-radius:18px;padding:10px}
.two-column-box{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.room-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.feedback{margin-top:12px;font-weight:900;color:var(--sage)}
.notebook-content{display:grid;gap:16px;margin-bottom:18px}
.note-card{background:rgba(255,253,246,.88);border:1px solid rgba(122,101,90,.15);border-radius:24px;padding:18px;box-shadow:var(--soft-shadow)}
.note-card h3{margin:0 0 10px}
.note-card p{white-space:pre-wrap;color:var(--muted);line-height:1.5}
.footer{text-align:center;padding:38px 24px;color:var(--muted)}

@media(max-width:1080px){
  .hero-grid,.active-room-grid,.school-map-shell{grid-template-columns:1fr}
  .lexicon-grid{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:66px}
  .section-title h2,.active-room h2{font-size:46px}
}
@media(max-width:640px){
  .topbar{align-items:flex-start;gap:12px;flex-direction:column}
  .lexicon-grid{grid-template-columns:1fr}
  .sentence-row,.match-row,.two-column-box{grid-template-columns:1fr}
  .hero h1{font-size:54px}
  .lead{font-size:18px}
  .section{padding:42px 16px}
  .hero-grid{padding:24px 16px}
  .progress-wrap{flex-direction:column;align-items:stretch}
  .flip-card{height:170px}
}