*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg-deep: #0b0f1a;--bg-card: rgba(255, 255, 255, .04);--bg-card-hover: rgba(255, 255, 255, .07);--bg-glass: rgba(255, 255, 255, .06);--border-glass: rgba(255, 255, 255, .1);--text: #e8eaf0;--text-dim: #8b92a8;--text-muted: #555d74;--font-serif: "Newsreader", Georgia, serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--radius: 16px;--radius-sm: 10px;--transition: .25s cubic-bezier(.4, 0, .2, 1)}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background:var(--bg-deep);color:var(--text);font-family:var(--font-serif);line-height:1.6;min-height:100vh}.app{display:flex;flex-direction:column;min-height:100vh;max-width:640px;margin:0 auto;padding:0 20px}.main{flex:1;display:flex;flex-direction:column;padding-bottom:40px}.header{text-align:center;padding:36px 0 20px;position:relative}.header-glow{position:absolute;inset:-40px -80px;pointer-events:none;opacity:.6;transition:background .6s ease}.header h1{font-family:var(--font-serif);font-size:2rem;font-weight:700;letter-spacing:-.02em;position:relative}.header-sub{font-size:.92rem;color:var(--text-dim);margin-top:2px;letter-spacing:.04em}.footer{text-align:center;padding:24px 0;font-size:.75rem;color:var(--text-muted);font-family:var(--font-mono)}.footer a{color:var(--text-dim);text-decoration:none}.footer a:hover{text-decoration:underline}.screen{width:100%}.screen-title{font-family:var(--font-serif);font-size:1.35rem;font-weight:600;text-align:center;margin-bottom:28px;letter-spacing:-.01em}.fade-in{animation:fadeIn .35s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.cards{display:flex;flex-direction:column;gap:12px}.cards-row{flex-direction:row;justify-content:center}.card{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:18px 22px;background:var(--bg-glass);border:1px solid var(--border-glass);border-radius:var(--radius);cursor:pointer;transition:all var(--transition);position:relative;overflow:hidden;text-align:left;color:var(--text);font-family:var(--font-serif);font-size:1rem}.card:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 30% 50%,var(--accent, #60a5fa)10,transparent 70%);opacity:0;transition:opacity var(--transition)}.card:hover:before{opacity:1}.card:hover{border-color:color-mix(in srgb,var(--accent, #60a5fa) 40%,transparent);transform:translateY(-2px)}.card:disabled{opacity:.35;cursor:not-allowed;transform:none}.card:disabled:hover:before{opacity:0}.card-dot{width:8px;height:8px;border-radius:50%;background:var(--accent, #60a5fa);margin-bottom:4px}.card-icon{font-size:1.4rem;margin-bottom:2px}.card-label{font-weight:600;font-size:1.05rem;position:relative;z-index:1}.card-desc{font-size:.82rem;color:var(--text-dim);position:relative;z-index:1}.size-card{flex:1;align-items:center;text-align:center;min-width:100px}.size-num{font-size:2.2rem;font-weight:700;font-family:var(--font-mono);position:relative;z-index:1}.back-btn{background:none;border:none;color:var(--text-dim);font-family:var(--font-serif);font-size:.9rem;cursor:pointer;padding:8px 0;margin-bottom:8px;transition:color var(--transition)}.back-btn:hover{color:var(--text)}.progress-dots{display:flex;justify-content:center;gap:8px;margin-bottom:8px}.dot{width:10px;height:10px;border-radius:50%;background:#ffffff1a;transition:all var(--transition)}.dot-active{background:var(--accent, #60a5fa);box-shadow:0 0 8px var(--accent, #60a5fa);transform:scale(1.2)}.dot-done{background:color-mix(in srgb,var(--accent, #60a5fa) 50%,transparent)}.progress-text{text-align:center;font-size:.82rem;color:var(--text-muted);font-family:var(--font-mono);margin-bottom:20px}.question-view{display:flex;flex-direction:column;gap:16px}.question-meta{display:flex;gap:8px;flex-wrap:wrap}.meta-tag{font-family:var(--font-mono);font-size:.72rem;padding:3px 10px;border-radius:20px;background:color-mix(in srgb,var(--accent, #60a5fa) 15%,transparent);color:var(--accent, #60a5fa);border:1px solid color-mix(in srgb,var(--accent, #60a5fa) 25%,transparent)}.question-text{background:var(--bg-glass);border:1px solid var(--border-glass);border-radius:var(--radius);padding:22px 24px;font-size:1.05rem;line-height:1.7;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.options{display:flex;flex-direction:column;gap:8px}.option{display:flex;align-items:center;gap:14px;padding:14px 18px;background:var(--bg-glass);border:1px solid var(--border-glass);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);font-family:var(--font-serif);font-size:1rem;color:var(--text);text-align:left;width:100%}.option:hover:not(:disabled){background:var(--bg-card-hover);border-color:#ffffff26}.option-letter{font-family:var(--font-mono);font-weight:600;font-size:.85rem;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:8px;background:#ffffff0f;flex-shrink:0}.option-text{flex:1;line-height:1.5}.option-selected{border-color:#60a5fa;background:#60a5fa1a}.option-selected .option-letter{background:#60a5fa;color:#0b0f1a}.option-correct{border-color:#4ade80;background:#4ade801a}.option-correct .option-letter{background:#4ade80;color:#0b0f1a}.option-wrong{border-color:#f87171;background:#f871711a}.option-wrong .option-letter{background:#f87171;color:#0b0f1a}.option-dim{opacity:.4}.btn-primary{display:block;width:100%;padding:14px;background:linear-gradient(135deg,#3b82f6,#6366f1);color:#fff;border:none;border-radius:var(--radius-sm);font-family:var(--font-serif);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition);margin-top:8px}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 20px #6366f14d}.btn-primary:disabled{opacity:.4;cursor:not-allowed}.btn-secondary{display:block;width:100%;padding:14px;background:var(--bg-glass);color:var(--text);border:1px solid var(--border-glass);border-radius:var(--radius-sm);font-family:var(--font-serif);font-size:1rem;cursor:pointer;transition:all var(--transition)}.btn-secondary:hover{background:var(--bg-card-hover)}.feedback{padding:14px 18px;border-radius:var(--radius-sm);font-weight:600;font-size:1rem;text-align:center}.feedback-correct{background:#4ade801f;color:#4ade80;border:1px solid rgba(74,222,128,.25)}.feedback-wrong{background:#f871711f;color:#f87171;border:1px solid rgba(248,113,113,.25)}.corrige-wrapper{margin-top:4px}.corrige-toggle{background:none;border:none;color:var(--text-dim);font-family:var(--font-serif);font-size:.9rem;cursor:pointer;padding:8px 0;transition:color var(--transition)}.corrige-toggle:hover{color:var(--text)}.corrige-panel{max-height:0;overflow:hidden;transition:max-height .4s ease,opacity .3s ease;opacity:0}.corrige-open{max-height:600px;opacity:1}.corrige-content{background:#ffffff08;border-left:3px solid var(--accent, #60a5fa);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:18px 20px;margin-top:8px}.corrige-content p{font-size:.88rem;line-height:1.7;color:var(--text-dim)}.corrige-source{display:inline-block;margin-top:12px;font-family:var(--font-mono);font-size:.72rem;color:var(--text-muted);text-decoration:none;transition:color var(--transition)}.corrige-source:hover{color:var(--text-dim)}.corrige-unavailable{font-size:.85rem;color:var(--text-muted);padding:10px 0}.corrige-unavailable a{color:var(--text-dim);margin-left:4px}.score-circle{position:relative;width:140px;height:140px;margin:0 auto 28px}.score-circle svg{display:block}.score-ring{transition:stroke-dashoffset 1s ease-out}.score-label{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.score-num{font-family:var(--font-mono);font-size:1.6rem;font-weight:700}.score-pct{font-family:var(--font-mono);font-size:.8rem;color:var(--text-dim)}.results-list{display:flex;flex-direction:column;gap:8px;margin-bottom:24px}.result-row{background:var(--bg-glass);border:1px solid var(--border-glass);border-radius:var(--radius-sm);padding:14px 16px;transition:all var(--transition)}.result-header{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.result-icon{font-weight:700;font-size:1.1rem}.result-correct .result-icon{color:#4ade80}.result-wrong .result-icon{color:#f87171}.result-q{font-family:var(--font-mono);font-size:.78rem;color:var(--text-dim);white-space:nowrap}.result-text{font-size:.88rem;color:var(--text-dim);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.result-answer{font-family:var(--font-mono);font-size:.78rem;color:#4ade80;white-space:nowrap}.corrige-mini-btn{background:none;border:none;cursor:pointer;font-size:1rem;padding:2px 6px;border-radius:6px;transition:background var(--transition)}.corrige-mini-btn:hover{background:#ffffff14}.result-corrige{margin-top:12px;padding:14px 16px;background:#ffffff05;border-left:3px solid var(--text-muted);border-radius:0 8px 8px 0}.result-corrige p{font-size:.85rem;line-height:1.7;color:var(--text-dim)}.results-actions{display:flex;gap:12px}.results-actions .btn-primary,.results-actions .btn-secondary{flex:1}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 0;gap:20px}.loading-screen p{font-size:.92rem;color:var(--text-dim)}.spinner{width:36px;height:36px;border:3px solid rgba(255,255,255,.08);border-top-color:#60a5fa;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-box{background:#f8717114;border:1px solid rgba(248,113,113,.2);border-radius:var(--radius);padding:28px;text-align:center}.error-box h2{color:#f87171;margin-bottom:12px}.error-box p{color:var(--text-dim);margin-bottom:8px}.error-box code{font-family:var(--font-mono);font-size:.85rem;background:#ffffff0f;padding:6px 14px;border-radius:8px;display:inline-block;margin-top:8px}.post-validate{display:flex;flex-direction:column;gap:12px}.question-image-container{background:var(--bg-glass);border:1px solid var(--border-glass);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:border-color var(--transition)}.question-image-container:hover{border-color:#fff3}.question-image{display:block;width:100%;max-height:400px;object-fit:contain;object-position:top center;padding:6px 8px;background:#fff;margin:0 auto}.question-image-large .question-image{max-height:540px;padding:10px 12px}.question-image-hint{font-family:var(--font-mono);font-size:.65rem;color:var(--text-muted);text-align:center;padding:4px 0 8px;opacity:.6}.image-only-hint{font-size:.85rem;color:var(--text-dim);font-style:italic;text-align:center}.options-letter-only{flex-direction:row;justify-content:center;gap:10px}.option-letter-btn{width:52px;min-width:52px;height:52px;padding:0;justify-content:center;align-items:center;border-radius:12px}.option-letter-btn .option-letter{width:auto;height:auto;background:none;font-size:1.1rem}.lightbox-overlay{position:fixed;inset:0;z-index:1000;background:#000000eb;display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .2s ease-out;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.lightbox-close{position:absolute;top:16px;right:20px;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fff;font-size:1.2rem;width:40px;height:40px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--transition);z-index:1001}.lightbox-close:hover{background:#fff3}.lightbox-img{max-width:95vw;max-height:90vh;object-fit:contain;border-radius:8px;box-shadow:0 8px 40px #00000080;background:#fff}@media(max-width:480px){.app{padding:0 14px}.header h1{font-size:1.6rem}.question-text{padding:16px 18px;font-size:.95rem}.option{padding:12px 14px;font-size:.92rem}.cards-row{flex-wrap:wrap}.result-text{display:none}.question-image{max-height:300px}.question-image-large .question-image{max-height:420px}.option-letter-btn{width:46px;min-width:46px;height:46px}.lightbox-img{max-width:100vw;max-height:85vh;border-radius:0}.lightbox-close{top:8px;right:8px}}