@import"https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;600;700;800;900&display=swap";:root{--bg-primary: #0a0e1a;--bg-secondary: #111827;--bg-card: rgba(30, 41, 59, .7);--bg-card-hover: rgba(51, 65, 85, .6);--bg-glass: rgba(255, 255, 255, .05);--border-subtle: rgba(255, 255, 255, .08);--border-active: rgba(99, 102, 241, .5);--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--accent-primary: #6366f1;--accent-primary-light: #818cf8;--accent-secondary: #8b5cf6;--accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #a78bfa);--success: #22c55e;--success-bg: rgba(34, 197, 94, .1);--success-border: rgba(34, 197, 94, .3);--error: #ef4444;--error-bg: rgba(239, 68, 68, .1);--error-border: rgba(239, 68, 68, .3);--warning: #f59e0b;--warning-bg: rgba(245, 158, 11, .1);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(99, 102, 241, .3)}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px}body{font-family:Noto Sans KR,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}#root{min-height:100vh;display:flex;flex-direction:column}.app-bg{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}.app-bg:before{content:"";position:absolute;top:-30%;left:-20%;width:60%;height:60%;background:radial-gradient(circle,rgba(99,102,241,.08) 0%,transparent 70%);animation:floatOrb 20s ease-in-out infinite}.app-bg:after{content:"";position:absolute;bottom:-20%;right:-20%;width:50%;height:50%;background:radial-gradient(circle,rgba(139,92,246,.06) 0%,transparent 70%);animation:floatOrb 25s ease-in-out infinite reverse}@keyframes floatOrb{0%,to{transform:translate(0)}33%{transform:translate(30px,-30px)}66%{transform:translate(-20px,20px)}}.container{position:relative;z-index:1;max-width:640px;margin:0 auto;padding:24px 20px;min-height:100vh;display:flex;flex-direction:column}.app-header{text-align:center;padding:32px 0 24px}.app-logo{font-size:2.5rem;margin-bottom:8px}.app-title{font-size:1.5rem;font-weight:800;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.5px}.app-subtitle{font-size:.85rem;color:var(--text-secondary);margin-top:4px;font-weight:400}.card{background:var(--bg-card);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-md);transition:all .3s ease}.card:hover{border-color:var(--border-active)}.card-title{font-size:1.1rem;font-weight:700;margin-bottom:16px;color:var(--text-primary)}.upload-zone{border:2px dashed rgba(99,102,241,.3);border-radius:var(--radius-lg);padding:48px 24px;text-align:center;cursor:pointer;transition:all .3s ease;background:var(--bg-glass)}.upload-zone:hover,.upload-zone.dragover{border-color:var(--accent-primary);background:#6366f114;box-shadow:var(--shadow-glow)}.upload-zone.dragover{transform:scale(1.01)}.upload-icon{font-size:3rem;margin-bottom:16px;display:block}.upload-text{font-size:1rem;font-weight:500;color:var(--text-primary);margin-bottom:8px}.upload-hint{font-size:.8rem;color:var(--text-muted)}.file-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}.file-item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--bg-glass);border-radius:var(--radius-sm);border:1px solid var(--border-subtle);font-size:.85rem}.file-item-name{display:flex;align-items:center;gap:8px;color:var(--text-primary);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-remove{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:1.1rem;padding:4px;transition:color .2s;flex-shrink:0}.file-remove:hover{color:var(--error)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border:none;border-radius:var(--radius-md);font-family:inherit;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;width:100%}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-sm),0 0 20px #6366f133}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-md),0 0 30px #6366f14d}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-primary:disabled{opacity:.4;cursor:not-allowed}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-subtle)}.btn-secondary:hover{background:var(--bg-card-hover);border-color:var(--border-active)}.btn-ghost{background:transparent;color:var(--text-secondary);padding:10px 20px}.btn-ghost:hover{color:var(--text-primary);background:var(--bg-glass)}.card-subtitle{font-size:.8rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}.subject-row{display:grid;gap:10px}.subject-row.row-2{grid-template-columns:1fr 1fr}.subject-row.row-4{grid-template-columns:repeat(3,1fr)}.subject-card{padding:16px 12px;background:var(--bg-card);border:2px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;transition:all .3s ease;text-align:center}.subject-card:hover{border-color:var(--accent-primary);background:#6366f10d;transform:translateY(-2px)}.subject-card.selected{border-color:var(--accent-primary);background:#6366f11a;box-shadow:var(--shadow-glow)}.subject-emoji{font-size:1.5rem;margin-bottom:6px;display:block}.subject-name{font-size:.9rem;font-weight:700;margin-bottom:2px}.subject-count{font-size:.75rem;color:var(--text-secondary)}.count-selector{display:flex;gap:8px;margin:16px 0 24px;flex-wrap:wrap}.count-btn{flex:1;min-width:70px;padding:10px 12px;background:var(--bg-glass);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-secondary);font-family:inherit;font-size:.85rem;font-weight:500;cursor:pointer;transition:all .2s}.count-btn:hover{border-color:var(--accent-primary);color:var(--text-primary)}.count-btn.active{background:#6366f126;border-color:var(--accent-primary);color:var(--accent-primary-light)}.quiz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.quiz-progress-info{font-size:.85rem;color:var(--text-secondary);font-weight:500}.quiz-score-live{display:flex;gap:12px;font-size:.85rem;font-weight:700}.score-correct{color:var(--success)}.score-wrong{color:var(--error)}.quiz-subject-badge{display:inline-block;padding:4px 12px;background:#6366f126;border-radius:100px;font-size:.75rem;color:var(--accent-primary-light);font-weight:600}.choice-icon{margin-left:auto;font-size:1rem;flex-shrink:0}.explanation-answer-line{font-size:1rem;margin-bottom:16px}.explanation-detail{margin-top:8px}.choice-review-title{font-size:.9rem;font-weight:700;color:var(--text-primary);margin-bottom:10px}.choice-review-item{padding:12px 14px;border-radius:var(--radius-sm);margin-bottom:8px;border:1px solid var(--border-subtle)}.choice-review-item.is-correct{background:var(--success-bg);border-color:var(--success-border)}.choice-review-item.is-wrong{background:var(--error-bg);border-color:var(--error-border)}.choice-review-header{display:flex;align-items:center;gap:8px;margin-bottom:6px}.choice-review-badge{font-size:.75rem;font-weight:700;padding:2px 8px;border-radius:4px}.choice-review-item.is-correct .choice-review-badge{background:#22c55e33;color:var(--success)}.choice-review-item.is-wrong .choice-review-badge{background:#ef444433;color:var(--error)}.choice-review-num{font-weight:700;color:var(--text-primary)}.choice-review-text{font-size:.85rem;line-height:1.6;color:var(--text-primary);word-break:keep-all}.choice-review-why{font-size:.8rem;color:var(--text-secondary);margin-top:6px;font-style:italic;line-height:1.5}.explanation-encourage{margin-top:12px;padding:10px 14px;background:var(--warning-bg);border-radius:var(--radius-sm);font-size:.85rem;color:var(--text-secondary);line-height:1.6}.progress-bar-bg{width:100%;height:6px;background:var(--bg-glass);border-radius:100px;margin-bottom:24px;overflow:hidden}.progress-bar-fill{height:100%;background:var(--accent-gradient);border-radius:100px;transition:width .5s ease}.question-number{font-size:.8rem;color:var(--accent-primary-light);font-weight:600;margin-bottom:8px}.question-text{font-size:1.05rem;font-weight:600;line-height:1.7;margin-bottom:24px;color:var(--text-primary);word-break:keep-all}.nickname-input{width:100%;padding:14px 16px;background:var(--bg-glass);border:1px solid var(--border-subtle);border-radius:var(--radius-md);font-family:inherit;font-size:1rem;color:var(--text-primary);outline:none;transition:all .2s}.nickname-input:focus{border-color:var(--accent-primary);background:#6366f10d}.disabled-section{opacity:.5;pointer-events:none;filter:grayscale(.5)}.history-list{display:flex;flex-direction:column;gap:8px;max-height:240px;overflow-y:auto}.history-item{display:flex;justify-content:space-between;align-items:center;padding:12px;background:var(--bg-glass);border-radius:var(--radius-sm);border:1px solid var(--border-subtle)}.history-info{display:flex;flex-direction:column;gap:2px}.history-subject{font-size:.9rem;font-weight:600;color:var(--text-primary)}.history-date{font-size:.75rem;color:var(--text-muted)}.history-score{text-align:right}.score-val{display:block;font-size:1.1rem;font-weight:800;color:var(--text-primary)}.score-detail{font-size:.75rem;color:var(--text-secondary)}.result-nickname-badge{display:inline-block;margin-top:12px;padding:4px 12px;background:#ffffff0d;border-radius:100px;font-size:.9rem;color:var(--text-secondary)}.choices-list{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}.choice-btn{display:flex;align-items:flex-start;gap:12px;padding:16px;background:var(--bg-glass);border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease;text-align:left;font-family:inherit;font-size:.92rem;color:var(--text-primary);line-height:1.5;word-break:keep-all}.choice-btn:hover:not(:disabled){border-color:var(--accent-primary);background:#6366f10d}.choice-btn.selected{border-color:var(--accent-primary);background:#6366f11a}.choice-btn.correct{border-color:var(--success);background:var(--success-bg)}.choice-btn.wrong{border-color:var(--error);background:var(--error-bg)}.choice-btn:disabled{cursor:default}.choice-number{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--bg-card);border:1px solid var(--border-subtle);font-size:.8rem;font-weight:700;flex-shrink:0;color:var(--text-secondary);transition:all .2s}.choice-btn.selected .choice-number{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.choice-btn.correct .choice-number{background:var(--success);border-color:var(--success);color:#fff}.choice-btn.wrong .choice-number{background:var(--error);border-color:var(--error);color:#fff}.choice-text{flex:1;padding-top:3px}.explanation-card{padding:24px;border-radius:var(--radius-lg);margin-bottom:20px;animation:slideUp .4s ease}.explanation-card.correct{background:var(--success-bg);border:1px solid var(--success-border)}.explanation-card.wrong{background:var(--error-bg);border:1px solid var(--error-border)}.explanation-result{font-size:1.3rem;font-weight:800;margin-bottom:12px}.explanation-card.correct .explanation-result{color:var(--success)}.explanation-card.wrong .explanation-result{color:var(--error)}.explanation-text{font-size:.9rem;color:var(--text-secondary);line-height:1.8;word-break:keep-all}.explanation-text strong{color:var(--text-primary);font-weight:600}.result-hero{text-align:center;padding:40px 20px}.result-emoji{font-size:4rem;margin-bottom:16px;display:block;animation:bounce .6s ease}.result-title{font-size:1.5rem;font-weight:800;margin-bottom:8px}.result-score{font-size:3rem;font-weight:900;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:16px 0}.result-detail{font-size:.9rem;color:var(--text-secondary)}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0}.stat-box{padding:16px;background:var(--bg-glass);border-radius:var(--radius-md);text-align:center;border:1px solid var(--border-subtle)}.stat-value{font-size:1.5rem;font-weight:800}.stat-value.correct-color{color:var(--success)}.stat-value.wrong-color{color:var(--error)}.stat-label{font-size:.75rem;color:var(--text-muted);margin-top:4px}.feedback-section{margin-top:24px}.feedback-title{font-size:1rem;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px}.feedback-item{padding:12px 16px;background:var(--bg-glass);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);margin-bottom:8px;font-size:.85rem;line-height:1.6;color:var(--text-secondary)}.feedback-item strong{color:var(--text-primary)}.btn-group{display:flex;flex-direction:column;gap:12px;margin-top:24px}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 0;gap:16px}.spinner{width:48px;height:48px;border:3px solid var(--border-subtle);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}.loading-text{font-size:.9rem;color:var(--text-secondary)}.empty-state{text-align:center;padding:40px 20px;color:var(--text-muted)}.empty-state-icon{font-size:3rem;margin-bottom:12px;display:block}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes bounce{0%,to{transform:scale(1)}50%{transform:scale(1.15)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.fade-in{animation:fadeIn .4s ease}.slide-up{animation:slideUp .4s ease}@media(max-width:480px){.container{padding:16px 12px}.app-title{font-size:1.3rem}.card{padding:20px 16px}.upload-zone{padding:32px 16px}.stats-row{gap:8px}.result-score{font-size:2.5rem}.subject-row.row-4{grid-template-columns:repeat(2,1fr)}.subject-card{padding:12px 8px}.subject-emoji{font-size:1.2rem}.subject-name{font-size:.8rem}}.score-ring-container{display:flex;justify-content:center;margin:24px 0}.score-ring{position:relative;width:140px;height:140px}.score-ring svg{transform:rotate(-90deg)}.score-ring-bg{fill:none;stroke:var(--border-subtle);stroke-width:8}.score-ring-fill{fill:none;stroke:url(#gradient);stroke-width:8;stroke-linecap:round;transition:stroke-dashoffset 1s ease}.score-ring-text{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.score-ring-percentage{font-size:2rem;font-weight:900;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.score-ring-label{font-size:.7rem;color:var(--text-muted);margin-top:2px}.wrong-questions-list{margin-top:16px;display:flex;flex-direction:column;gap:12px}.wrong-question-item{padding:16px;background:var(--bg-glass);border:1px solid var(--error-border);border-radius:var(--radius-md)}.wrong-question-num{font-size:.75rem;color:var(--error);font-weight:600;margin-bottom:4px}.wrong-question-text{font-size:.85rem;line-height:1.5;color:var(--text-secondary)}.wrong-question-answer{margin-top:8px;font-size:.8rem;color:var(--success);font-weight:500}.manual-answer-section{margin-top:16px;padding:16px;background:var(--warning-bg);border-radius:var(--radius-md);border:1px solid rgba(245,158,11,.2)}.manual-answer-label{font-size:.85rem;color:var(--warning);font-weight:600;margin-bottom:8px}.manual-answer-btns{display:flex;gap:8px}.manual-answer-btn{flex:1;padding:8px;background:var(--bg-glass);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-secondary);font-family:inherit;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s}.manual-answer-btn:hover{border-color:var(--warning);color:var(--warning)}.manual-answer-btn.selected{background:#f59e0b26;border-color:var(--warning);color:var(--warning)}