@import "https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg:#000;--bg-secondary:#0a0a0a;--border:#ffffff1a;--border-hover:#fff3;--text-main:#ededed;--text-muted:#888;--accent:#fff;--accent-glow:#ffffff1a;--correct:#10b981;--incorrect:#ef4444}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,-apple-system,sans-serif}body{background-color:var(--bg);color:var(--text-main);justify-content:center;align-items:flex-start;min-height:100vh;padding:40px 0;display:flex;position:relative;overflow-x:hidden}.bg-grid{z-index:-2;pointer-events:none;background-image:linear-gradient(90deg,#ffffff0d 1px,#0000 1px),linear-gradient(#ffffff0d 1px,#0000 1px);background-size:50px 50px;width:100vw;height:100vh;position:fixed;top:0;left:0;-webkit-mask-image:radial-gradient(circle,#000,#0000 80%);mask-image:radial-gradient(circle,#000,#0000 80%)}.ambient-glow{z-index:-1;pointer-events:none;background:radial-gradient(at top,#ffffff26,#0000 70%);width:800px;height:400px;position:fixed;top:0;left:50%;transform:translate(-50%)}.app-container{z-index:10;flex-direction:column;justify-content:center;width:100%;max-width:640px;min-height:calc(100vh - 80px);padding:0 20px;display:flex}@keyframes fadeUp{0%{opacity:0;filter:blur(4px);transform:translateY(20px)}to{opacity:1;filter:blur();transform:translateY(0)}}.hero-section{text-align:center;flex-direction:column;align-items:center;margin-bottom:2rem;display:flex}.greeting-text{color:var(--text-muted);opacity:.8;letter-spacing:.02em;margin-bottom:12px;font-size:1.25rem;font-weight:500}.title-huge{letter-spacing:-.04em;background:linear-gradient(135deg,#fff 0%,#a5b4fc 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#6366f133;border-radius:100px;align-items:center;gap:8px;padding:10px 20px;font-weight:500;transition:all .2s;display:inline-flex}.recommended-action:hover{color:#fff;background:#6366f133;border-color:#6366f166;gap:12px}.tab-container{border:1px solid var(--border);background:#ffffff08;border-radius:100px;margin-bottom:24px;padding:6px;display:flex}.tab-btn{text-align:center;color:var(--text-muted);cursor:pointer;border-radius:100px;flex:1;padding:12px 0;font-size:.95rem;font-weight:500;transition:all .3s cubic-bezier(.16,1,.3,1)}.tab-btn:hover{color:var(--text-main)}.tab-btn.active{color:var(--text-main);background:#ffffff1a;box-shadow:0 2px 10px #0003}.bento-grid{grid-template-columns:repeat(2,1fr);gap:16px;display:grid}.bento-card{border:1px solid var(--border);cursor:pointer;background:#ffffff05;border-radius:20px;flex-direction:column;gap:12px;padding:24px;transition:all .3s cubic-bezier(.16,1,.3,1);display:flex;position:relative;overflow:hidden}.bento-card:before{content:"";opacity:0;background:linear-gradient(135deg,#ffffff0d 0%,#0000 100%);transition:opacity .3s;position:absolute;inset:0}.bento-card:hover{border-color:var(--border-hover);background:#ffffff0a;transform:translateY(-4px);box-shadow:0 12px 24px #0003}.bento-card:hover:before{opacity:1}.card-icon{width:40px;height:40px;color:var(--text-main);border:1px solid var(--border);background:#ffffff0d;border-radius:10px;justify-content:center;align-items:center;display:flex}.bento-card.primary{border:1px solid #6366f180;transform:scale(1.02);box-shadow:0 0 20px #6366f126,inset 0 0 20px #6366f10d}.bento-card.primary:hover{border-color:#6366f1cc;transform:scale(1.05)translateY(-4px);box-shadow:0 0 30px #6366f14d,inset 0 0 30px #6366f11a}.bento-card.primary .card-icon{color:#818cf8;background:#6366f11a;border-color:#6366f14d}.card-title{font-size:1.05rem;font-weight:600}.card-desc{color:var(--text-muted);font-size:.85rem;line-height:1.4}.study-grid{grid-template-columns:repeat(3,1fr);gap:12px;animation:.5s cubic-bezier(.16,1,.3,1) forwards fadeUp;display:grid}.study-card{border:1px solid var(--border);text-align:center;cursor:pointer;background:#ffffff05;border-radius:16px;flex-direction:column;align-items:center;gap:8px;padding:16px;transition:all .2s cubic-bezier(.16,1,.3,1);display:flex}.study-card:hover{background:#ffffff0d;border-color:#fff3;transform:translateY(-2px)}.study-icon{color:#3b82f6;margin-bottom:4px}.study-title{color:var(--text-main);font-size:.85rem;font-weight:500}.quiz-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;margin-bottom:2.5rem;padding-bottom:1rem;display:flex}.progress-pill{border:1px solid var(--border);background:#ffffff0d;border-radius:20px;align-items:center;gap:8px;padding:6px 12px;font-size:.85rem;font-weight:500;display:flex}.topic-tag{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.85rem}.quit-btn{color:#ef4444;cursor:pointer;alignItems:center;background:#ef44441a;border:1px solid #ef444433;border-radius:100px;gap:6px;padding:6px 12px;font-size:.85rem;font-weight:500;transition:all .2s cubic-bezier(.16,1,.3,1);display:flex}.quit-btn:hover{background:#ef444433;border-color:#ef444466}.question-text{letter-spacing:-.02em;margin-bottom:2.5rem;font-size:1.75rem;font-weight:600;line-height:1.3}.options-container{flex-direction:column;gap:12px;display:flex}.option-btn{border:1px solid var(--border);text-align:left;width:100%;color:var(--text-main);cursor:pointer;background:#ffffff05;border-radius:16px;align-items:center;padding:20px;font-size:1.1rem;transition:all .2s cubic-bezier(.16,1,.3,1);display:flex}.option-btn:hover:not(:disabled){background:#ffffff0d;border-color:#ffffff4d;transform:translate(4px)}.option-btn.selected{background:#ffffff1a;border-color:#ffffff80;transform:translate(4px)}.opt-letter{width:28px;height:28px;color:var(--text-muted);background:#ffffff1a;border-radius:6px;justify-content:center;align-items:center;margin-right:16px;font-family:monospace;font-size:.85rem;transition:all .2s;display:inline-flex}.option-btn.correct{border-color:var(--correct);background:#10b9810d;box-shadow:0 0 20px #10b9811a}.option-btn.correct .opt-letter{background:var(--correct);color:#000}.option-btn.incorrect{border-color:var(--incorrect);background:#ef44440d}.option-btn.incorrect .opt-letter{background:var(--incorrect);color:#fff}.option-btn:disabled{cursor:default}.option-btn:disabled:not(.correct):not(.incorrect){opacity:.4}.feedback-banner{border:1px solid var(--border);background:#ffffff05;border-radius:16px;margin-top:2rem;padding:24px;animation:.4s cubic-bezier(.16,1,.3,1) forwards fadeUp;position:relative;overflow:hidden}.feedback-banner:before{content:"";width:4px;position:absolute;top:0;bottom:0;left:0}.feedback-banner.is-correct:before{background:var(--correct)}.feedback-banner.is-incorrect:before{background:var(--incorrect)}.feedback-header{align-items:center;gap:10px;margin-bottom:12px;font-size:1.1rem;font-weight:600;display:flex}.feedback-banner.is-correct .feedback-header{color:var(--correct)}.feedback-banner.is-incorrect .feedback-header{color:var(--incorrect)}.feedback-text{color:var(--text-muted);margin-bottom:20px;font-size:.95rem;line-height:1.6}.btn{cursor:pointer;border:none;border-radius:12px;justify-content:center;align-items:center;gap:8px;width:100%;padding:16px;font-size:1rem;font-weight:500;transition:all .2s cubic-bezier(.16,1,.3,1);display:flex}.btn-primary{color:#000;background:#fff}.btn-primary:hover{background:#e5e5e5;transform:scale(.98)}.btn-secondary{color:var(--text-main);border:1px solid var(--border);background:#ffffff0d}.btn-secondary:hover{background:#ffffff1a;border-color:#ffffff4d}.results-container{text-align:center;animation:.6s forwards fadeUp}.results-icon{border:1px solid var(--border);width:80px;height:80px;color:var(--text-main);background:#ffffff0d;border-radius:24px;justify-content:center;align-items:center;margin-bottom:24px;display:inline-flex}.score-huge{letter-spacing:-.05em;background:linear-gradient(#fff 0%,#888 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:8px;font-size:5rem;font-weight:700;line-height:1}.accuracy-text{color:var(--text-muted);margin-bottom:40px;font-size:1.2rem}.weak-spots{text-align:left;border:1px solid var(--border);background:#ffffff05;border-radius:20px;margin-bottom:30px;padding:24px}.weak-spots h3{align-items:center;gap:8px;margin-bottom:16px;font-size:1rem;font-weight:500;display:flex}.tags-container{flex-wrap:wrap;gap:10px;display:flex}.tag{border:1px solid var(--border);color:var(--text-main);background:#ffffff0d;border-radius:8px;padding:6px 12px;font-size:.85rem}.tag.error-tag{color:#fca5a5;background:#ef44441a;border-color:#ef444433}.discover-header{opacity:0;text-align:left;margin-top:4rem;margin-bottom:1.5rem;animation:.8s cubic-bezier(.16,1,.3,1) .2s forwards fadeUp}.discover-header h2{color:var(--text-main);letter-spacing:-.01em;margin-bottom:4px;font-family:Cormorant Garamond,serif;font-size:2.2rem;font-weight:600}.discover-header p{color:var(--text-muted);font-size:.95rem}.discover-grid{opacity:0;grid-template-columns:1fr;gap:24px;margin-bottom:3rem;animation:.8s cubic-bezier(.16,1,.3,1) .3s forwards fadeUp;display:grid}.discover-card{border:1px solid var(--border);background:#ffffff05;border-radius:20px;flex-direction:column;transition:all .3s cubic-bezier(.16,1,.3,1);display:flex;overflow:hidden}.discover-card:hover{border-color:var(--border-hover);background:#ffffff0a;transform:translateY(-4px);box-shadow:0 12px 30px #0000004d}.discover-img-wrapper{width:100%;height:220px;position:relative;overflow:hidden}.discover-img{object-fit:cover;width:100%;height:100%;transition:transform .6s cubic-bezier(.16,1,.3,1)}.discover-card:hover .discover-img{transform:scale(1.05)}.img-overlay{background:linear-gradient(#0000 40%,#0a0a0a 100%);position:absolute;inset:0}.discover-content{z-index:2;text-align:left;margin-top:-40px;padding:0 24px 24px;position:relative}.aesthetic-font{color:var(--text-main);text-shadow:0 4px 12px #000000e6;letter-spacing:.02em;margin-bottom:12px;font-family:Cormorant Garamond,serif;font-size:2rem;font-style:italic;font-weight:600}.discover-content p{color:var(--text-muted);font-size:.95rem;line-height:1.7}.study-sheet-container{animation:.6s cubic-bezier(.16,1,.3,1) forwards fadeUp}.sheet-list{flex-direction:column;gap:16px;display:flex}.sheet-item{border:1px solid var(--border);background:#ffffff05;border-radius:16px;padding:20px;transition:all .2s}.sheet-item:hover{border-color:var(--border-hover);background:#ffffff0a}.sheet-q{color:var(--text-main);margin-bottom:8px;font-size:1.1rem;font-weight:500}.sheet-a{align-items:center;gap:8px;margin-bottom:8px;font-size:1.1rem;font-weight:600;display:flex}.sheet-exp{color:var(--text-muted);background:#ffffff08;border-left:2px solid #fff3;border-radius:10px;padding:12px;font-size:.9rem;line-height:1.5}.inline-icon{color:var(--text-muted)}