:root{--font-header: "Outfit", "Inter", -apple-system, sans-serif;--font-body: "Inter", -apple-system, sans-serif;--bg-gradient: radial-gradient(circle at 0% 0%, #1e1b4b 0%, #0f172a 100%);--panel-bg: rgba(30, 41, 59, .45);--panel-border: rgba(255, 255, 255, .08);--panel-glow: rgba(99, 102, 241, .1);--color-primary: #6366f1;--color-primary-hover: #4f46e5;--color-secondary: #a855f7;--color-success: #10b981;--color-error: #f43f5e;--color-warning: #f59e0b;--text-main: #f8fafc;--text-muted: #94a3b8;--text-dark: #0f172a;--radius-sm: 8px;--radius-md: 16px;--radius-lg: 24px;--shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .25), 0 10px 10px -5px rgba(0, 0, 0, .15);--shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, .37);--transition-fast: .15s ease;--transition-normal: .3s ease}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background:var(--bg-gradient);color:var(--text-main);min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden;position:relative}body:before,body:after{content:"";position:absolute;width:40vw;height:40vw;border-radius:50%;z-index:-1;filter:blur(120px);opacity:.15;pointer-events:none}body:before{top:-10vw;left:-10vw;background:var(--color-primary)}body:after{bottom:-10vw;right:-10vw;background:var(--color-secondary)}h1,h2,h3,h4,h5,h6{font-family:var(--font-header);font-weight:600;letter-spacing:-.02em}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#0f172a80}::-webkit-scrollbar-thumb{background:#6366f14d;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#6366f199}.glass-panel{background:var(--panel-bg);backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);border:1px solid var(--panel-border);box-shadow:var(--shadow-glass);border-radius:var(--radius-md);padding:2rem;transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.glass-panel:hover{box-shadow:var(--shadow-glass),0 0 40px 0 var(--panel-glow)}.container{width:100%;max-width:1200px;margin:0 auto;padding:2rem 1.5rem;flex:1;display:flex;flex-direction:column}header.app-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2.5rem;border-bottom:1px solid rgba(255,255,255,.05);padding-bottom:1.5rem}.app-title-wrapper{display:flex;align-items:center;gap:.75rem}.app-title-logo{font-size:2.5rem;animation:float 4s ease-in-out infinite}.app-title{font-family:var(--font-header);font-size:2rem;font-weight:800;background:linear-gradient(135deg,#fff 0%,var(--text-muted) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.user-badge{display:flex;align-items:center;gap:.75rem;background:#ffffff0d;padding:.5rem 1rem;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.05)}.user-avatar{width:24px;height:24px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700}.user-select-container{max-width:500px;margin:auto;width:100%}.user-select-title{text-align:center;margin-bottom:1.5rem;font-size:1.75rem}.user-list{display:flex;flex-direction:column;gap:.75rem;margin-bottom:2rem;max-height:250px;overflow-y:auto;padding-right:.5rem}.user-item{display:flex;justify-content:space-between;align-items:center;padding:1rem;background:#ffffff08;border:1px solid rgba(255,255,255,.05);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast)}.user-item:hover{background:#ffffff14;border-color:var(--color-primary);transform:translate(4px)}.new-user-form{display:flex;flex-direction:column;gap:.75rem;border-top:1px solid rgba(255,255,255,.1);padding-top:1.5rem}.input-group{display:flex;flex-direction:column;gap:.5rem}.input-label{font-size:.875rem;color:var(--text-muted)}.text-input{background:#0f172a99;border:1px solid rgba(255,255,255,.1);padding:.875rem 1rem;border-radius:var(--radius-sm);color:var(--text-main);font-family:var(--font-body);font-size:1rem;transition:border-color var(--transition-fast)}.text-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 10px #6366f133}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:var(--font-body);font-weight:500;padding:.875rem 1.5rem;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);border:none;font-size:1rem}.btn-primary{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-secondary) 100%);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px #6366f166}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);color:var(--text-main)}.btn-secondary:hover{background:#ffffff1a;border-color:var(--text-muted)}.btn-danger{background:#f43f5e1a;border:1px solid rgba(244,63,94,.2);color:var(--color-error)}.btn-danger:hover{background:var(--color-error);color:#fff;box-shadow:0 8px 20px #f43f5e4d}.dashboard-grid{display:grid;grid-template-columns:2.5fr 1fr;gap:2rem}@media (max-width: 900px){.dashboard-grid{grid-template-columns:1fr}}.dashboard-main{display:flex;flex-direction:column;gap:2rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem}.stat-card{background:#ffffff05;border:1px solid rgba(255,255,255,.05);border-radius:var(--radius-sm);padding:1.25rem;display:flex;flex-direction:column;gap:.5rem}.stat-value{font-family:var(--font-header);font-size:2rem;font-weight:700;color:var(--text-main)}.stat-label{font-size:.8rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.test-selection-panel{display:flex;flex-direction:column;gap:1.25rem}.test-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1rem}.test-card{background:#ffffff05;border:1px solid rgba(255,255,255,.05);border-radius:var(--radius-sm);padding:1.25rem;cursor:pointer;transition:all var(--transition-fast);display:flex;flex-direction:column;gap:.75rem}.test-card:hover{background:#ffffff0f;border-color:var(--color-primary);transform:translateY(-2px)}.test-title{font-size:1.1rem;font-weight:600}.progress-bar-container{width:100%;height:6px;background:#ffffff0d;border-radius:3px;overflow:hidden}.progress-bar{height:100%;background:linear-gradient(90deg,var(--color-primary),var(--color-secondary));border-radius:3px;transition:width .5s ease-out}.test-stats{display:flex;justify-content:space-between;font-size:.8rem;color:var(--text-muted)}.dashboard-sidebar{display:flex;flex-direction:column;gap:1.5rem}.action-card{display:flex;flex-direction:column;gap:1.25rem;background:linear-gradient(135deg,#6366f11a,#a855f71a)}.quiz-container{max-width:800px;margin:0 auto;width:100%;display:flex;flex-direction:column;gap:1.5rem}.quiz-header{display:flex;justify-content:space-between;align-items:center;font-size:.9rem;color:var(--text-muted);border-bottom:1px solid rgba(255,255,255,.05);padding-bottom:1rem}.quiz-meta{display:flex;align-items:center;gap:.5rem}.quiz-body{display:flex;flex-direction:column;gap:1.5rem}.question-text{font-size:1.35rem;font-weight:500;line-height:1.5;margin-bottom:.5rem}.options-list{display:flex;flex-direction:column;gap:.875rem}.option-button{background:#ffffff05;border:1px solid rgba(255,255,255,.06);border-radius:var(--radius-sm);padding:1.25rem;color:var(--text-main);text-align:left;font-family:var(--font-body);font-size:1.05rem;line-height:1.4;cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:flex-start;gap:1rem}.option-button:hover:not(.disabled){background:#ffffff0f;border-color:var(--color-primary);transform:translate(4px)}.option-letter{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.9rem;flex-shrink:0}.option-button.correct{background:#10b9811a!important;border-color:var(--color-success)!important;box-shadow:0 0 15px #10b98126}.option-button.correct .option-letter{background:var(--color-success);border-color:var(--color-success);color:var(--text-dark)}.option-button.incorrect{background:#f43f5e1a!important;border-color:var(--color-error)!important;box-shadow:0 0 15px #f43f5e26}.option-button.incorrect .option-letter{background:var(--color-error);border-color:var(--color-error);color:#fff}.option-button.correct-hint{border-color:var(--color-success)!important;background:#10b9810d!important}.option-button.disabled{cursor:default;opacity:.65}.open-question-notice{background:#6366f114;border:1px dashed var(--color-primary);border-radius:var(--radius-sm);padding:1.25rem;display:flex;align-items:center;gap:.75rem;color:var(--text-main);line-height:1.4;margin-bottom:1.5rem}.open-question-icon{font-size:1.5rem;flex-shrink:0}.quiz-footer{display:flex;justify-content:space-between;align-items:center;margin-top:1.5rem;border-top:1px solid rgba(255,255,255,.05);padding-top:1.5rem}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-5px)}to{transform:translateY(0)}}.error-msg{color:var(--color-error);font-size:.9rem;margin-top:.25rem}.session-complete-card{text-align:center;display:flex;flex-direction:column;align-items:center;gap:1.5rem;padding:3rem 2rem}.complete-icon{font-size:4rem;animation:pop .5s cubic-bezier(.175,.885,.32,1.275)}@keyframes pop{0%{transform:scale(0)}to{transform:scale(1)}}.recent-activity-panel{display:flex;flex-direction:column;gap:.75rem}.activity-list{display:flex;flex-direction:column;gap:.5rem;max-height:150px;overflow-y:auto}.activity-item{display:flex;justify-content:space-between;padding:.5rem 0;border-bottom:1px solid rgba(255,255,255,.03);font-size:.85rem}.activity-success{color:var(--color-success)}.activity-error{color:var(--color-error)}.animate-fade{animation:fadeIn var(--transition-normal)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}