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8px;font-size:12px;font-weight:700;position:absolute;top:12px;left:16px}.card-front-text{text-align:center;color:#111827;font-size:22px;font-weight:700}.flip-hint{color:#9ca3af;font-size:12px;position:absolute;bottom:12px}.card-back-text{color:#374151;text-align:center;word-break:keep-all;font-size:15px;line-height:1.7}.complete-btn{color:#fff;cursor:pointer;border:none;border-radius:24px;margin:10px auto 0;padding:10px 32px;font-size:15px;font-weight:700;transition:transform .1s,box-shadow .1s;display:block}.complete-btn:active{transform:scale(.97)}.done-tag{color:#059669;text-align:center;background:#d1fae5;border-radius:24px;margin:10px auto 0;padding:8px 20px;font-weight:700;display:block}.done-screen{justify-content:center;align-items:center;min-height:calc(100dvh - 72px);padding:24px;display:flex}.done-content{text-align:center}.done-emoji{margin-bottom:16px;font-size:64px;animation:.4s pop;display:block}.done-content h2{margin-bottom:8px;font-size:28px;font-weight:800}.done-streak{color:#22c55e;margin-bottom:16px;font-size:20px;font-weight:600}@keyframes pop{0%{transform:scale(.5)}80%{transform:scale(1.1)}to{transform:scale(1)}}.marble-chip{color:#7c3aed;background:#ede9fe;border-radius:20px;padding:10px 20px;font-weight:700;display:inline-block}.extra-learn-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#22c55e,#16a34a);border:none;border-radius:14px;width:100%;max-width:240px;margin:20px auto 0;padding:14px 20px;font-size:16px;font-weight:700;display:block;box-shadow:0 4px 12px #22c55e4d}.modal-overlay{z-index:200;background:#00000080;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.modal-card{text-align:center;background:#fff;border-radius:20px;flex-direction:column;gap:12px;width:100%;max-width:400px;padding:28px;display:flex}.modal-box{background:var(--bg-primary,#fff);border-radius:16px;width:100%;max-width:380px;padding:24px;box-shadow:0 20px 60px #0000004d}.modal-emoji{font-size:48px}.modal-card h3{color:#111827;font-size:20px;font-weight:800}.modal-card p{color:#6b7280;font-size:14px}.modal-marbles{font-size:16px;font-weight:600;color:#7c3aed!important}.btn{cursor:pointer;border:none;border-radius:12px;width:100%;padding:14px;font-size:15px;font-weight:700}.btn-green{color:#fff;background:#22c55e}.btn-ghost{color:#9ca3af;background:0 0;font-weight:400}.btn-danger{color:#ef4444;background:#fef2f2;border:1px solid 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input{opacity:0;width:0;height:0}.toggle-slider{cursor:pointer;background:#e5e7eb;border-radius:24px;transition:all .2s;position:absolute;inset:0}.toggle-slider:before{content:"";background:#fff;border-radius:50%;width:18px;height:18px;transition:all .2s;position:absolute;top:3px;left:3px}.toggle input:checked+.toggle-slider{background:#22c55e}.toggle input:checked+.toggle-slider:before{transform:translate(20px)}.card-type-badge{color:#6b7280;text-transform:uppercase;background:#f3f4f6;border-radius:6px;padding:3px 7px;font-size:10px;font-weight:600;position:absolute;top:12px;right:16px}.card-pronunciation{color:#9ca3af;margin-top:4px;font-size:13px;font-style:italic}.tts-btn{cursor:pointer;color:#6b7280;background:0 0;border:1px solid #e5e7eb;border-radius:20px;margin-top:8px;padding:4px 10px;font-size:14px;transition:background .15s}.tts-btn:hover{background:#f3f4f6}.tts-small{margin-top:4px;padding:2px 7px;font-size:12px}.card-example{text-align:left;background:#fff9;border-radius:8px;width:100%;margin-top:10px;padding:8px}.example-label{color:#9ca3af;text-transform:uppercase;margin-bottom:3px;font-size:10px;font-weight:700;display:block}.card-example p{color:#4b5563;font-size:13px;line-height:1.4}.card-synonyms{text-align:left;width:100%;margin-top:10px}.synonyms-label{color:#9ca3af;text-transform:uppercase;margin-bottom:6px;font-size:10px;font-weight:700;display:block}.synonyms-list{flex-wrap:wrap;gap:6px;display:flex}.synonym-chip{color:#7c3aed;background:#ede9fe;border-radius:20px;padding:4px 10px;font-size:12px;font-weight:600}.quiz-header{border-radius:12px 12px 0 0;justify-content:space-between;align-items:center;padding:10px 16px;display:flex}.subject-badge-inline{color:#fff;font-size:12px;font-weight:700}.quiz-mode-label{color:#fffc;font-size:11px}.quiz-controller{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 8px 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#bbf7d0;border-radius:12px;padding:16px}.landing-ai-card-subject{color:#6b7280;margin-bottom:6px;font-size:.75rem;font-weight:600;display:inline-block}.landing-ai-card-front{color:#111827;margin:0 0 6px;font-size:1rem;font-weight:700}.landing-ai-card-back{color:#374151;margin:0 0 6px;font-size:.88rem;line-height:1.6}.landing-ai-card-example{color:#6b7280;margin:0;font-size:.82rem;font-style:italic;line-height:1.5}