*{box-sizing:border-box} :root{--bg:#f5f7fb;--card:#fff;--text:#162033;--muted:#667085;--primary:#2563eb;--primary2:#1d4ed8;--line:#e7ebf1;--ok:#15803d;--bad:#b91c1c;--shadow:0 10px 30px rgba(27,40,78,.08)}
html{background:var(--bg)}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",sans-serif;background:var(--bg);color:var(--text);padding-bottom:calc(24px + env(safe-area-inset-bottom))}
button,input,textarea{font:inherit}.topbar{padding:calc(22px + env(safe-area-inset-top)) 20px 22px;background:linear-gradient(145deg,#2563eb,#4f46e5);color:white;display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.topbar h1{margin:3px 0 5px;font-size:29px;line-height:1.05}.topbar p{margin:0;opacity:.9;font-size:14px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.12em;opacity:.72}.points{display:flex;gap:7px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.2);padding:9px 12px;border-radius:999px;white-space:nowrap}
main{width:min(720px,100%);margin:-8px auto 0;padding:0 14px}.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;margin:14px 0;box-shadow:var(--shadow)}.hero{display:flex;gap:12px}.step-badge{flex:0 0 30px;width:30px;height:30px;border-radius:50%;background:#e8efff;color:var(--primary);display:grid;place-items:center;font-weight:800}.grow{flex:1;min-width:0}.card h2,.section-heading h2{margin:0 0 5px;font-size:20px}.card p{color:var(--muted);line-height:1.45}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.btn{border:0;border-radius:14px;padding:12px 15px;font-weight:750;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px}.primary{background:var(--primary);color:white}.primary:active{background:var(--primary2)}.secondary{background:#eef3ff;color:#1e40af}.ghost{background:#f7f8fa;color:#475467;border:1px solid var(--line)}.full{width:100%}textarea{width:100%;min-height:150px;resize:vertical;margin-top:14px;border:1px solid #d7dce4;background:#fbfcfe;border-radius:16px;padding:13px;color:var(--text);outline:none}textarea:focus{border-color:#93b4ff;box-shadow:0 0 0 3px #e8efff}.preview{width:100%;max-height:300px;object-fit:contain;border-radius:16px;margin-top:12px;background:#eef0f4}.status{margin-top:12px;padding:10px 12px;border-radius:12px;background:#fff8df;color:#6b4f00;font-size:13px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px}.iconbtn{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:white;cursor:pointer}.section-heading{padding:8px 6px 0}.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 0 16px}.mode-card{background:white;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);text-align:left;padding:16px;display:flex;flex-direction:column;gap:6px;min-height:130px;cursor:pointer;color:var(--text)}.mode-card:active{transform:scale(.985)}.mode-icon{font-size:27px}.mode-card small{color:var(--muted);line-height:1.3}.question-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;margin:4px 0 12px}.options{display:grid;gap:9px;margin-top:14px}.option{border:1px solid #dfe3ea;background:white;border-radius:14px;padding:13px;text-align:left;color:var(--text)}.option.correct{border-color:#86d2a1;background:#effbf3}.option.wrong{border-color:#f2aaa5;background:#fff3f2}.feedback{margin-top:13px;padding:12px 14px;border-radius:14px;background:#f6f8fb;color:#475467;line-height:1.4}.flashcard{min-height:250px;border-radius:20px;border:1px solid var(--line);background:linear-gradient(180deg,#fff,#f8faff);display:grid;place-items:center;text-align:center;padding:24px;cursor:pointer}.flashcard h3{font-size:24px;margin:0}.flashcard p{font-size:17px;color:#344054}.flash-hint{text-align:center;color:var(--muted);font-size:12px;margin-top:10px}.memory-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.memory-card{border:1px solid #dfe3ea;background:#eef3ff;border-radius:14px;min-height:92px;padding:9px;font-size:12px;font-weight:700;display:grid;place-items:center;text-align:center;cursor:pointer}.memory-card.hidden-card{font-size:0}.memory-card.hidden-card:after{content:"?";font-size:24px;color:#3b5fc0}.memory-card.matched{background:#effbf3;border-color:#9dd9af}.oral-box{text-align:center}.oral-question{font-size:22px;font-weight:800;line-height:1.25;margin:12px 0 18px}.oral-input{width:100%;border:1px solid #d7dce4;border-radius:14px;padding:13px}.mic{font-size:18px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:14px 0}.stats div{background:#f7f9fc;border-radius:14px;padding:13px;text-align:center}.stats strong{display:block;font-size:24px}.stats span{display:block;font-size:11px;color:var(--muted);margin-top:3px}.privacy-card{font-size:13px}.privacy-card p{margin-bottom:0}.hidden{display:none!important}
@media (max-width:430px){.topbar h1{font-size:26px}.mode-grid{grid-template-columns:1fr 1fr}.mode-card{min-height:120px;padding:14px}.memory-grid{grid-template-columns:repeat(2,1fr)}}
.version-badge{font-size:9px;background:rgba(255,255,255,.2);padding:3px 6px;border-radius:999px;vertical-align:1px;letter-spacing:.06em}.ocr-tools{margin-top:10px}.ocr-tip{font-size:12px!important;margin:7px 2px 0!important;color:var(--muted)!important}.quality-panel{margin-top:10px;padding:12px;border:1px solid var(--line);border-radius:14px;background:#f8fafc}.quality-row{display:flex;justify-content:space-between;gap:12px;font-size:13px}.quality-bar{height:8px;border-radius:999px;background:#e8edf4;overflow:hidden;margin:8px 0}.quality-bar>div{height:100%;background:#64748b;border-radius:999px;transition:width .25s ease}.quality-panel p{font-size:12px!important;margin:6px 0 0!important}.quality-good{background:#f1fbf4;border-color:#bbebc9}.quality-good .quality-bar>div{background:#16a34a}.quality-mid{background:#fff9e8;border-color:#f5df9b}.quality-mid .quality-bar>div{background:#d97706}.quality-bad{background:#fff3f2;border-color:#f5b8b4}.quality-bad .quality-bar>div{background:#dc2626}.btn:disabled{opacity:.55;cursor:not-allowed}

.build-note{display:block;margin-top:7px;font-size:11px;opacity:.72;font-weight:700;letter-spacing:.02em}

.review-notice{margin-top:12px;padding:12px 14px;border-radius:14px;background:#eff6ff;border:1px solid #bfdbfe;color:#1e3a8a}.review-notice strong{font-size:14px}.review-notice p{margin:5px 0 0!important;font-size:12px!important;color:#475569!important}.review-warning{background:#fff7ed;border-color:#fed7aa;color:#9a3412}

/* v7 — recorte manual para melhorar OCR em páginas de livro/caderno */
.crop-panel{margin-top:12px;padding:12px;border:1px solid #bfdbfe;border-radius:16px;background:#eff6ff}.crop-head strong{font-size:14px;color:#1e3a8a}.crop-head p{font-size:12px!important;margin:5px 0 10px!important;color:#475569!important}.crop-stage{position:relative;width:100%;overflow:hidden;border-radius:14px;background:#111827;touch-action:none;user-select:none;-webkit-user-select:none}.crop-stage canvas{display:block;width:100%;height:auto;max-height:62vh;object-fit:contain;touch-action:none}.crop-help{font-size:12px;color:#475569;margin-top:8px}.crop-panel .actions{margin-top:10px}.crop-panel .btn{flex:1;min-width:150px}