:root{
  --yellow:#ffd900;--yellow2:#ffef62;--blue:#1178ee;--green:#16b84e;--red:#f03232;
  --purple:#8d3fe8;--orange:#ff8b1a;--pink:#f44ea3;--ink:#17305f;--paper:#fffdf6;
  --shadow:0 10px 0 rgba(16,43,87,.14),0 16px 32px rgba(20,45,90,.15);
  --radius:24px;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:Inter,ui-rounded,"Trebuchet MS",Arial,sans-serif;color:var(--ink);background:#ffe55b}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
#app{min-height:100dvh}

/* fixed opening image */
.home-fixed{position:fixed;inset:0;background:#f6f6f6;display:grid;place-items:center;overflow:hidden}
.home-art-wrap{position:relative;width:100%;height:100%;display:grid;place-items:center}
.home-art{display:block;max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;user-select:none;-webkit-user-drag:none}
.home-hotspot{position:absolute;border:0;background:transparent;color:transparent;outline:none;border-radius:28px;z-index:3}
.home-hotspot:focus-visible{box-shadow:0 0 0 5px #fff,0 0 0 10px #0057d8;background:rgba(255,255,255,.10)}
.home-hotspot.new{left:var(--new-left);top:var(--new-top);width:var(--new-width);height:var(--new-height)}
.home-hotspot.return{left:var(--return-left);top:var(--return-top);width:var(--return-width);height:var(--return-height)}

/* shared HTML shell */
.page{min-height:100dvh;background:linear-gradient(180deg,#fff7a7 0,#fffbe9 55%,#ecf9ff 100%);padding:18px}
.topbar{max-width:1300px;margin:0 auto 18px;display:flex;align-items:center;gap:14px;background:#fff;border:3px solid #163668;border-radius:22px;padding:10px 14px;box-shadow:var(--shadow);position:sticky;top:8px;z-index:20}
.brand{font-weight:1000;font-size:clamp(22px,3vw,38px);letter-spacing:-1.5px;color:#0ba749;text-shadow:1px 1px 0 #fff,2px 2px 0 #18345e}
.brand span{color:#ef2d35}.brand i{font-style:normal;color:#fff;text-shadow:1px 1px 0 #17305f,2px 2px 0 #17305f}
.spacer{flex:1}.mini-profile{font-weight:900;background:#eef7ff;border:2px solid #b7dfff;border-radius:999px;padding:8px 12px;white-space:nowrap}
.icon-btn{border:0;background:#177cf1;color:#fff;border-radius:14px;padding:10px 13px;font-weight:900;box-shadow:0 4px 0 #0a53b1}
.icon-btn.secondary{background:#fff;color:#17305f;border:2px solid #bfd4ed;box-shadow:none}
.shell{max-width:1300px;margin:auto}
.card{background:white;border:3px solid #183968;border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:clamp(20px,4vw,42px);background:linear-gradient(135deg,#fff,#fff9d0);position:relative;overflow:hidden}
.hero-card:before{content:"";position:absolute;inset:-30% 45% auto -25%;height:380px;background:radial-gradient(circle,#ffea3f,transparent 65%);opacity:.45;pointer-events:none}
h1,h2,h3{margin-top:0}.title-xl{font-size:clamp(32px,6vw,62px);line-height:.96;letter-spacing:-2px;margin-bottom:10px}.subtitle{font-size:clamp(17px,2vw,22px);font-weight:700;color:#425d86}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}.field label{font-weight:1000}.field input,.field select,.field textarea{width:100%;border:3px solid #c6d9ef;border-radius:16px;padding:13px 14px;background:#fbfdff;color:#17305f;outline:none}.field input:focus,.field select:focus,.field textarea:focus{border-color:#167af0;box-shadow:0 0 0 4px #ddebff}.hint{background:#e7f4ff;border:2px solid #a8d5ff;border-radius:16px;padding:12px;font-weight:700}
.primary{border:0;border-radius:18px;background:linear-gradient(#24c95a,#0ea542);color:white;font-weight:1000;padding:14px 22px;box-shadow:0 6px 0 #087c32;font-size:18px}.primary.blue{background:linear-gradient(#2295ff,#0f72df);box-shadow:0 6px 0 #0752a8}.primary.red{background:linear-gradient(#ff5a55,#e52f30);box-shadow:0 6px 0 #a91d1f}.primary:active{transform:translateY(3px);box-shadow:0 3px 0 rgba(0,0,0,.2)}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}

/* profile chooser */
.profile-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin-top:22px}.profile-card{border:3px solid #b7d3ee;border-radius:20px;padding:18px;background:#fff;display:grid;gap:8px}.profile-card h3{margin:0;font-size:23px}.pill{display:inline-flex;align-items:center;gap:6px;width:max-content;max-width:100%;border-radius:999px;padding:6px 10px;background:#e7f4ff;font-weight:900}.empty{padding:30px;text-align:center;border:3px dashed #91b7da;border-radius:22px;background:#f8fcff}

/* dashboard */
.dashboard-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}.welcome{padding:28px;background:linear-gradient(135deg,#fff,#fff2a7)}.welcome h1{font-size:clamp(30px,4vw,50px);margin-bottom:8px}.progress-panel{padding:24px;background:linear-gradient(145deg,#e8f7ff,#fff)}
.progressbar{height:24px;background:#e3e9ef;border:2px solid #a9bdcf;border-radius:999px;overflow:hidden}.progressbar>span{height:100%;display:block;background:linear-gradient(90deg,#2ccf5d,#0b9f3d);border-radius:inherit;transition:width .5s ease}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}.stat{border-radius:18px;padding:13px;background:#fff;border:2px solid #c9dded;text-align:center}.stat strong{display:block;font-size:28px}.dashboard-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}.big-tile{border:3px solid #173b6a;border-radius:22px;padding:19px;text-align:left;background:#fff;box-shadow:0 7px 0 rgba(23,59,106,.15);font-weight:1000;min-height:120px}.big-tile .emoji{font-size:36px;display:block;margin-bottom:8px}.big-tile.green{background:#dff9e8}.big-tile.blue{background:#e5f2ff}.big-tile.yellow{background:#fff4ad}.big-tile.purple{background:#f1e6ff}.big-tile.orange{background:#fff0d7}.big-tile.pink{background:#ffe3f2}

/* roadmap */
.level-banner{display:flex;align-items:center;gap:16px;padding:20px;margin-bottom:18px}.level-chip{font-size:38px;font-weight:1000;border-radius:18px;padding:8px 16px;color:white;background:#1178ee;box-shadow:0 5px 0 #0753a9}.level-chip.a2{background:#ef343a;box-shadow:0 5px 0 #a81d21}.unit-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}.unit-card{border:3px solid #153d6f;border-radius:20px;background:#fff;padding:15px;min-height:145px;text-align:left;box-shadow:0 6px 0 rgba(21,61,111,.14);position:relative}.unit-card.unlocked:hover{transform:translateY(-3px)}.unit-card.completed{background:#e1f9e8;border-color:#119440}.unit-card.locked{filter:grayscale(.25);opacity:.62;cursor:not-allowed}.unit-num{font-size:29px;font-weight:1000;color:#1178ee}.unit-card.completed .unit-num{color:#09913a}.unit-title{font-weight:1000;line-height:1.1;margin-top:6px}.lock-badge{position:absolute;right:10px;top:10px;font-size:23px}.score-badge{position:absolute;right:10px;bottom:10px;border-radius:999px;padding:5px 9px;background:#15b54c;color:white;font-weight:1000}

/* unit */
.unit-layout{display:grid;grid-template-columns:240px 1fr;gap:16px}.unit-nav{padding:12px;display:grid;gap:9px;align-content:start;position:sticky;top:90px;height:max-content}.unit-nav button{border:2px solid #bcd2e8;border-radius:15px;background:#fff;padding:12px;text-align:left;font-weight:1000;color:#17305f}.unit-nav button.active{background:#167bf1;color:white;border-color:#0b5fc1}.unit-main{padding:clamp(18px,3vw,34px)}.unit-heading{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;border-bottom:3px dashed #c4d6e6;padding-bottom:16px;margin-bottom:18px}.unit-heading h1{font-size:clamp(28px,4vw,46px);margin-bottom:5px}.unit-meta{font-weight:900;color:#5c6f8f}
.theory-box{background:#fff7bd;border:3px solid #f0c62d;border-radius:20px;padding:18px;margin:14px 0}.theory-box li{margin:8px 0;font-weight:700;line-height:1.45}.vocab{display:flex;gap:8px;flex-wrap:wrap}.vocab span{padding:8px 12px;background:#e8f5ff;border:2px solid #9fd0f5;border-radius:999px;font-weight:900}.audio-row{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.audio-btn{border:0;background:#ff8b1a;color:#fff;border-radius:16px;padding:10px 14px;font-weight:1000;box-shadow:0 4px 0 #c56100}.support-box{background:#f2e8ff;border:3px solid #b98ae9;border-radius:18px;padding:16px;margin-top:12px}.hidden{display:none!important}
.question{padding:16px;border:2px solid #c7d9e9;border-radius:18px;margin:12px 0;background:#fbfdff}.question.correct{border-color:#1fa94d;background:#eafbed}.question.wrong{border-color:#e64141;background:#fff0f0}.question .prompt{font-weight:1000;margin-bottom:10px}.options{display:grid;gap:8px}.option{display:flex;align-items:center;gap:9px;padding:9px 11px;border:2px solid #d5e1ec;border-radius:13px;background:white}.option:has(input:checked){border-color:#197ce9;background:#eaf4ff}.fill-input{max-width:320px;border:3px solid #b7d2ec;border-radius:12px;padding:9px 11px}.result{font-size:20px;font-weight:1000;border-radius:18px;padding:15px;margin-top:16px}.result.good{background:#daf7e3;border:3px solid #16a847}.result.bad{background:#ffe1e1;border:3px solid #db3737}.writing-area{min-height:180px}.gate{background:#e9f2ff;border:3px solid #79ace6;border-radius:18px;padding:16px;font-weight:900;margin-top:18px}.gate strong{color:#0b68c8}.section-title{font-size:28px;margin-bottom:5px}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(120px);background:#17305f;color:#fff;padding:12px 18px;border-radius:999px;font-weight:900;z-index:100;transition:.25s;box-shadow:0 10px 25px rgba(0,0,0,.2)}.toast.show{transform:translateX(-50%) translateY(0)}

@media(max-width:900px){
 .dashboard-grid{grid-template-columns:1fr}.dashboard-actions{grid-template-columns:repeat(2,1fr)}
 .unit-layout{grid-template-columns:1fr}.unit-nav{position:static;grid-template-columns:repeat(3,1fr);overflow:auto}.unit-nav button{text-align:center;font-size:13px;padding:9px}
 .topbar{position:relative;top:0}.mini-profile{display:none}
}
@media(max-width:620px){
 .page{padding:10px}.topbar{border-radius:16px;padding:8px 10px}.brand{font-size:22px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.dashboard-actions{grid-template-columns:1fr 1fr}.stat-row{grid-template-columns:1fr}.unit-grid{grid-template-columns:1fr 1fr}.unit-card{min-height:130px;padding:12px}.unit-layout{gap:10px}.unit-main{padding:15px}.unit-nav{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:390px){.unit-grid{grid-template-columns:1fr}.dashboard-actions{grid-template-columns:1fr}}

@media(prefers-reduced-motion:no-preference){
 .big-tile,.unit-card,.primary{transition:transform .15s ease,box-shadow .15s ease}.welcome:after{content:"✨";position:absolute;animation:float 2.2s ease-in-out infinite}.welcome{position:relative}@keyframes float{50%{transform:translateY(-10px) rotate(8deg)}}
}


/* PATCH 002 — motore unità a 25 pagine */
.lesson-shell{max-width:1180px;margin:auto}.lesson-head{padding:18px 22px;display:flex;justify-content:space-between;align-items:center;gap:20px;background:linear-gradient(135deg,#fff,#fff7b7)}.lesson-head h1{margin:4px 0 0;font-size:clamp(27px,4vw,44px)}.lesson-counter{min-width:88px;text-align:center;background:#147cf0;color:#fff;border:3px solid #0b4f9e;border-radius:20px;padding:9px;box-shadow:0 5px 0 #083f80}.lesson-counter strong{display:block;font-size:28px}.lesson-counter span{font-weight:900}.lesson-progress{height:16px;border:2px solid #b7c9d8;background:#fff;margin:14px 7px;border-radius:999px;overflow:hidden}.lesson-progress span{display:block;height:100%;background:linear-gradient(90deg,#16ba4e,#ffd52e,#f23638);border-radius:inherit;transition:.35s}.lesson-page{padding:clamp(18px,3vw,34px);min-height:480px;position:relative;overflow:hidden}.lesson-page:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;background:#ffdf26;opacity:.12;right:-60px;bottom:-70px}.category-badge{display:inline-block;background:#173a6b;color:#fff;border-radius:999px;padding:7px 12px;font-weight:1000;margin-bottom:12px}.lead{font-size:clamp(20px,2.4vw,28px);font-weight:900;line-height:1.35}.cover-page{text-align:center}.cover-emoji{font-size:70px;animation:float 2.3s ease-in-out infinite}.cover-page h2{font-size:clamp(34px,5vw,60px);margin:0 0 8px}.goal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin:25px 0}.goal-grid>div{background:#f6fbff;border:3px solid #bed9ee;border-radius:18px;padding:16px}.goal-grid b{display:block;font-size:18px;margin-bottom:7px}.goal-grid span{font-weight:750}.vocab-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px}.vocab-card{border:3px solid #183a69;border-radius:17px;background:#fff8c4;padding:14px;text-align:left;font-weight:1000;color:#17305f;box-shadow:0 4px 0 #d9bd32}.vocab-card span{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#147cf0;color:#fff;margin-right:8px}.model-list{display:grid;gap:10px;margin:15px 0}.model-list>div{border:3px solid #a6cef1;background:#eef8ff;border-radius:16px;padding:13px;font-size:19px;font-weight:850}.dialogue{display:grid;gap:11px;margin:18px 0}.dialogue>div{max-width:82%;border:3px solid #b8d5ee;border-radius:20px 20px 20px 6px;padding:13px 16px;background:#eef8ff;font-weight:850;font-size:18px}.dialogue>div:nth-child(even){margin-left:auto;background:#e7f8df;border-color:#9bd38a;border-radius:20px 20px 6px 20px}.listen-hero{font-size:24px;text-align:center;padding:30px;background:#fff0da;border:3px dashed #ff932e;border-radius:20px}.reading-text{font-size:20px;line-height:1.7;background:#fffdf1;border:3px solid #f0cf5a;border-radius:20px;padding:22px;margin:12px 0}.reading-reminder{border:2px solid #b8d3ea;background:#f2f8ff;border-radius:16px;padding:10px 14px;margin:12px 0}.reading-reminder summary{font-weight:1000;cursor:pointer}.lesson-nav{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:16px 0 4px}.lesson-nav .primary[disabled]{opacity:.35;cursor:not-allowed;box-shadow:none}.page-dots{display:flex;gap:7px}.page-dots span{width:11px;height:11px;background:#c8d4df;border-radius:50%}.page-dots span.on{background:#16b84e;transform:scale(1.18)}
@media(max-width:700px){.lesson-head{padding:14px}.lesson-counter{min-width:72px}.goal-grid{grid-template-columns:1fr}.lesson-page{min-height:0}.lesson-nav{position:sticky;bottom:6px;background:rgba(255,255,255,.94);border:2px solid #c6d6e4;border-radius:18px;padding:9px;z-index:12}.lesson-nav .primary{padding:11px 13px;font-size:15px}.page-dots{display:none}.dialogue>div{max-width:95%}}