:root{--bg-primary: #0b1329;--bg-secondary: #080b16;--bg-card: rgba(23, 37, 84, .45);--bg-card-hover: rgba(30, 48, 110, .6);--primary: #6366f1;--primary-glow: rgba(99, 102, 241, .25);--primary-hover: #4f46e5;--accent: #d946ef;--accent-hover: #c084fc;--success: #10b981;--success-glow: rgba(16, 185, 129, .15);--success-border: #059669;--warning: #f59e0b;--warning-glow: rgba(245, 158, 11, .15);--danger: #ef4444;--danger-glow: rgba(239, 68, 68, .15);--danger-border: #dc2626;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-muted: #64748b;--border: rgba(255, 255, 255, .08);--border-focus: rgba(99, 102, 241, .4);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 24px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1);--glass-blur: blur(20px);--shadow-lg: 0 10px 30px -5px rgba(0, 0, 0, .6), 0 8px 15px -6px rgba(0, 0, 0, .6);--shadow-glow: 0 0 25px rgba(99, 102, 241, .3)}*{margin:0;padding:0;box-sizing:border-box;font-family:Inter,Noto Sans KR,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}html,body{width:100%;overflow-x:hidden;overflow-y:auto;position:relative}body{background-color:var(--bg-secondary);background-image:radial-gradient(at 0% 0%,rgba(99,102,241,.12) 0px,transparent 40%),radial-gradient(at 100% 100%,rgba(217,70,239,.08) 0px,transparent 45%);background-attachment:fixed;color:var(--text-primary);min-height:100vh}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@keyframes fadeIn{0%{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{transform:scale(.96);opacity:0}to{transform:scale(1);opacity:1}}@keyframes 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var(--transition-fast)}.glass-panel:hover{border-color:#ffffff1f;background:var(--bg-card-hover)}.header{position:fixed;top:0;left:0;right:0;height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;z-index:100;border-radius:0;border-bottom:1px solid var(--border);background:#080b16d9;backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur)}.header-logo{display:flex;align-items:center;gap:10px;cursor:pointer}.logo-icon{font-size:1.6rem}.logo-text{font-weight:800;font-size:1.3rem;background:linear-gradient(135deg,#818cf8,#f472b6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.5px}.header-nav{display:flex;align-items:center;gap:16px}.user-badge{display:flex;align-items:center;gap:6px;padding:6px 12px;background:#ffffff0d;border:1px solid var(--border);border-radius:var(--radius-full);font-size:.85rem;font-weight:500;color:var(--text-secondary)}.admin-tag{background:var(--accent);color:#fff;font-size:.65rem;padding:1px 6px;border-radius:4px;font-weight:700;margin-left:6px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--radius-md);font-weight:600;font-size:.95rem;cursor:pointer;transition:all var(--transition-fast);border:none;outline:none}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:var(--shadow-glow)}.btn-primary:hover{transform:none;filter:brightness(1.15);box-shadow:0 0 16px #6366f166}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:#ffffff0d;color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:#ffffff1a;border-color:#fff3}.btn-sm{padding:8px 16px;font-size:.85rem;border-radius:8px}.btn-xs{padding:4px 10px;font-size:.75rem;border-radius:6px}.btn-danger{background:#ef444426;color:#f87171;border:1px solid rgba(239,68,68,.3)}.btn-danger:hover{background:var(--danger);color:#fff;border-color:var(--danger-border)}.w-full{width:100%}.mt-4{margin-top:1rem}.mt-6{margin-top:1.5rem}.mb-6{margin-bottom:1.5rem}.text-danger{color:#ef4444!important}.text-success{color:var(--success)!important}.text-primary{color:var(--primary)!important}.text-info{color:#38bdf8!important}.text-center{text-align:center}.mx-auto{margin-left:auto;margin-right:auto}.input-field{width:100%;padding:12px 16px;background:#0a0f1ecc;border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:.95rem;outline:none;transition:all var(--transition-fast)}.input-field:focus{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-glow)}.auth-wrapper{margin:auto;width:100%;max-width:440px;padding:40px 0;display:flex;flex-direction:column;gap:24px}.auth-brand{text-align:center}.auth-brand h1{font-size:3rem;font-weight:900;background:linear-gradient(135deg,#818cf8,#d946ef);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:8px}.auth-brand p{color:var(--text-secondary);font-size:.95rem}.auth-card{padding:32px}.auth-tabs{display:flex;border-bottom:2px solid var(--border);margin-bottom:24px}.auth-tab{flex:1;background:none;border:none;color:var(--text-muted);font-size:1rem;font-weight:600;padding:12px;cursor:pointer;transition:all var(--transition-fast);text-align:center}.auth-tab.active{color:var(--text-primary);border-bottom:2px solid var(--primary)}.auth-form{display:flex;flex-direction:column;gap:18px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-size:.85rem;font-weight:600;color:var(--text-secondary)}.pw-hint{font-size:.75rem;color:var(--text-muted);display:flex;justify-content:space-between;align-items:center}.pw-status-badge{padding:1px 6px;border-radius:4px;font-weight:700}.pw-status-badge.valid{background:#10b98126;color:#34d399}.pw-status-badge.invalid{background:#ef44441a;color:#f87171}.toast{padding:12px 16px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;margin-bottom:12px}.toast-error{background:#ef444426;color:#f87171;border:1px solid rgba(239,68,68,.3)}.toast-success{background:#10b98126;color:#34d399;border:1px solid rgba(16,185,129,.3)}.dashboard-container{display:flex;flex-direction:column;gap:32px;margin-top:20px}.welcome-banner h2{font-size:2rem;font-weight:800;margin-bottom:8px}.welcome-banner p{color:var(--text-secondary)}.dashboard-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}@media (max-width: 768px){.dashboard-grid{grid-template-columns:1fr}}.dashboard-card{padding:36px;display:flex;flex-direction:column}.dashboard-card h3{font-size:1.4rem;font-weight:700;margin-bottom:8px}.dashboard-card p{color:var(--text-secondary);font-size:.95rem;line-height:1.5}.card-icon-wrapper{margin-bottom:20px;width:56px;height:56px;border-radius:var(--radius-md);background:#ffffff0a;display:flex;align-items:center;justify-content:center;border:1px solid var(--border)}.highlight-card{background:radial-gradient(circle at 100% 0%,rgba(99,102,241,.25) 0%,transparent 60%),var(--bg-card);border-color:#6366f140}.highlight-card:hover{border-color:#6366f166}.settings-fields{margin-top:24px;display:flex;flex-direction:column;gap:16px}.challenge-container{max-width:640px;width:100%;margin:0 auto;padding:10px 0;-webkit-user-select:none;user-select:none;height:auto;min-height:520px;display:flex;flex-direction:column}.challenge-box{display:flex;flex-direction:column;gap:16px;flex:1}.challenge-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.close-btn{background:none;border:none;color:var(--text-muted);font-size:1.4rem;cursor:pointer;padding:2px;line-height:1;transition:color var(--transition-fast)}.close-btn:hover{color:var(--text-primary)}.progress-bar-track{flex:1;height:12px;background:#ffffff0d;border-radius:var(--radius-full);border:1px solid var(--border);overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,#10b981,#34d399);border-radius:var(--radius-full);transition:width var(--transition-normal)}.progress-counter{font-size:.8rem;font-weight:700;color:var(--text-secondary)}.quiz-card{padding:24px;text-align:center;position:relative;overflow:hidden}.quiz-card-header{display:flex;justify-content:space-between;align-items:center;width:100%;margin-bottom:16px;gap:8px}.quiz-card-header-left{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.quiz-level-badge{font-size:.7rem;font-weight:700;padding:3px 8px;border-radius:var(--radius-sm);background:#3b82f626;color:#93c5fd;border:1px solid rgba(59,130,246,.2);display:inline-block;text-transform:uppercase}.accuracy-badge-inline{font-size:.7rem;font-weight:700;padding:3px 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forwards}.quiz-detail-item{display:flex;align-items:baseline;margin-bottom:8px}.quiz-detail-item:last-child{margin-bottom:0}.quiz-detail-label{color:var(--text-muted);font-size:.85rem;font-weight:600;width:80px;flex-shrink:0}.quiz-detail-val{color:var(--text-primary);font-size:.95rem;font-weight:500}.quiz-detail-val-strong{color:#a5b4fc;font-weight:700;font-size:1.05rem}.list-synonyms-text{font-size:.8rem;color:var(--text-muted);margin-left:4px}@keyframes slideDownFadeIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.quiz-word-wrapper{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:8px}.quiz-question-word{font-size:2.3rem;font-weight:900;letter-spacing:-1px;text-shadow:0 0 15px rgba(255,255,255,.1)}.tts-btn{background:#6366f126;border:1px solid rgba(99,102,241,.25);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:var(--primary);cursor:pointer;transition:all 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0;width:100%;max-width:400px}.score-item{flex:1;background:#ffffff08;border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;display:flex;flex-direction:column;align-items:center;gap:6px}.score-item .label{font-size:.8rem;font-weight:600;color:var(--text-secondary);white-space:nowrap}.score-item .value{font-size:1.5rem;font-weight:800;white-space:nowrap}.finished-actions{display:flex;gap:16px;width:100%;max-width:400px}.finished-actions button{flex:1}.admin-container{display:flex;flex-direction:column;gap:24px}.admin-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}.admin-header h2{font-size:1.8rem;font-weight:800}.admin-tabs{display:flex;gap:10px;background:#0a0f1e66;padding:4px;border-radius:var(--radius-md);border:1px solid 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680px){.btn-text-hide,.user-badge-text{display:none!important}.header-nav{gap:8px}.user-badge{padding:6px}}.carousel-container{box-shadow:var(--shadow-lg)}.carousel-slide{transition:transform var(--transition-normal)}@media (max-width: 480px){.finished-card{padding:32px 16px!important}.score-summary{gap:8px!important;margin:20px 0 10px!important}.score-item{padding:12px 6px!important;min-width:0!important}.score-item .label{font-size:.72rem!important}.score-item .value{font-size:1.15rem!important}.finished-actions{gap:8px!important}input,textarea,select{font-size:16px!important}.form-row-2{grid-template-columns:1fr!important}}.table-container{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.switch{position:relative;display:inline-block;width:46px;height:24px;flex-shrink:0}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#ffffff14;border:1px solid var(--border);transition:all var(--transition-normal);border-radius:34px}.slider:before{position:absolute;content:"";height:16px;width:16px;left:3px;bottom:3px;background-color:var(--text-primary);transition:all var(--transition-normal);border-radius:50%;box-shadow:0 2px 5px #0000004d}.switch input:checked+.slider{background:linear-gradient(135deg,var(--primary),var(--accent));border-color:transparent}.switch input:checked+.slider:before{transform:translate(22px);background-color:#fff}.switch input:disabled+.slider{opacity:.5;cursor:not-allowed}@keyframes simpleFadeIn{0%{opacity:0}to{opacity:1}}.animate-simple-fade-in{animation:simpleFadeIn var(--transition-normal) forwards}.mobile-history-view{display:none}.desktop-history-view{display:block}@media (max-width: 768px){.dashboard-main-tabs{position:fixed!important;bottom:0!important;left:0!important;right:0!important;margin:0!important;border-radius:0!important;border:none!important;border-top:1px solid var(--border)!important;background:#080b16e6!important;backdrop-filter:blur(16px)!important;-webkit-backdrop-filter:blur(16px)!important;padding:8px 12px 10px!important;z-index:1000!important;box-shadow:0 -4px 20px #0006!important}.dashboard-main-tabs .admin-tab{padding:8px 10px!important;font-size:.85rem!important;justify-content:center!important}.dashboard-container{padding-bottom:50px!important}.welcome-banner.welcome-banner-active-HISTORY,.welcome-banner.welcome-banner-active-SETTINGS,.dashboard-desktop-only-grid{display:none!important}.mobile-history-view{display:block!important}.desktop-history-view{display:none!important}.mobile-history-view .carousel-slide{height:65dvh;min-height:480px;max-height:600px}.mobile-history-view .dashboard-card{height:100%;padding:20px 16px;display:flex;flex-direction:column;box-sizing:border-box}.mobile-history-view 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768px){html,body{touch-action:manipulation;overscroll-behavior:none}html.no-scroll,body.no-scroll{overflow:hidden!important;height:100%!important;max-height:100%!important;position:fixed!important;top:0;left:0;right:0;bottom:0;width:100%!important}.challenge-container{height:calc(100svh - 80px)!important;max-height:800px!important}.challenge-footer{min-height:calc(68px + env(safe-area-inset-bottom))!important;height:auto!important;padding-bottom:calc(12px + env(safe-area-inset-bottom))!important;box-sizing:border-box!important}.history-table th,.history-table td{padding:8px 6px!important;font-size:.8rem!important}}@media (max-width: 480px){.challenge-box{gap:12px!important}.quiz-card{padding:16px 12px!important}.quiz-question-word{font-size:1.8rem!important}.choice-btn{padding:10px 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20px;display:flex;justify-content:center;align-items:center}.ad-video-mock{width:100%;height:200px;background:radial-gradient(circle,#0f172ae6,#020617);border-radius:var(--radius-md);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:16px;border:1px dashed rgba(255,255,255,.15);position:relative}.ad-video-icon{font-size:3rem;animation:pulse 2s infinite ease-in-out}.ad-video-text{font-size:.9rem;color:var(--text-secondary);font-weight:500}.ad-progress-bar{width:80%;height:6px;background:#ffffff1a;border-radius:3px;overflow:hidden;margin-top:8px}.ad-progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:3px;transition:width 1s linear}.ad-footer{padding:16px 20px;border-top:1px solid var(--border);background:#0003}@keyframes pulse{0%{transform:scale(1);opacity:.8}50%{transform:scale(1.1);opacity:1}to{transform:scale(1);opacity:.8}}