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1rem;font-size:1.75rem;font-weight:700;text-align:center;background:linear-gradient(135deg,var(--primary-light),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.quiz-setup,.quiz-content{display:flex;flex-direction:column;gap:1.5rem}.quiz-progress{margin-bottom:1rem}.progress-bar{width:100%;height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden;margin-bottom:.5rem}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--secondary));transition:width .3s ease}.options-list{display:flex;flex-direction:column;gap:.75rem;margin:1.5rem 0}.option-label{display:flex;align-items:center;gap:.75rem;padding:1rem;background:var(--bg-tertiary);border:2px solid var(--border-color);border-radius:8px;cursor:pointer;transition:all .3s ease}.option-label:hover{background:var(--bg-hover);border-color:var(--primary)}.option-label.selected{background:var(--bg-secondary);border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}.option-label input[type=radio]{cursor:pointer;width:1.25rem;height:1.25rem}.quiz-navigation{display:flex;justify-content:space-between;margin-top:1.5rem}.btn-submit{background:linear-gradient(135deg,var(--success),#059669)}.quiz-results{display:flex;flex-direction:column;gap:2rem}.results-header{text-align:center;padding:2rem;background:var(--bg-primary);border-radius:12px;border:1px solid var(--border-color)}.score-display{display:flex;align-items:baseline;justify-content:center;gap:.5rem;margin:1rem 0}.score-number{font-size:4rem;font-weight:700;color:var(--primary-light)}.score-total{font-size:2rem;color:var(--text-muted)}.score-percentage{font-size:1.5rem;color:var(--text-secondary);margin:0}.results-questions{display:flex;flex-direction:column;gap:1.5rem}.result-question{padding:1.5rem;background:var(--bg-primary);border-radius:12px;border-left:4px solid var(--border-color)}.result-question.correct{border-left-color:var(--success)}.result-question.incorrect{border-left-color:var(--danger)}.result-header{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem}.result-icon{width:2rem;height:2rem;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.25rem}.result-question.correct .result-icon{background:var(--success);color:#fff}.result-question.incorrect .result-icon{background:var(--danger);color:#fff}.result-header h4{margin:0;color:var(--text-primary)}.result-question-text{color:var(--text-secondary);margin-bottom:1rem}.result-answers{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1rem}.result-answer{padding:.75rem;background:var(--bg-tertiary);border-radius:8px;color:var(--text-secondary)}.correct-text{color:var(--success);font-weight:600}.incorrect-text{color:var(--danger);font-weight:600}.result-explanation{padding:1rem;background:var(--bg-tertiary);border-radius:8px;color:var(--text-secondary);margin-top:1rem}.btn-reset{background:linear-gradient(135deg,var(--primary),var(--primary-dark));width:100%}.export-data-container{width:100%;background:var(--bg-card);border:1px solid var(--border-color);padding:2rem;border-radius:16px;box-sizing:border-box;box-shadow:var(--shadow-lg);transition:all .3s ease;margin-bottom:2rem}.export-data-container:hover{border-color:var(--border-hover);box-shadow:var(--shadow-xl);transform:translateY(-2px)}.export-data-container h2{margin:0 0 1rem;font-size:1.75rem;font-weight:700;text-align:center;background:linear-gradient(135deg,var(--primary-light),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.export-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-bottom:2rem}.stat-card{background:var(--bg-primary);padding:1.5rem;border-radius:12px;border:1px solid var(--border-color);text-align:center}.stat-number{display:block;font-size:2.5rem;font-weight:700;color:var(--primary-light);margin-bottom:.5rem}.stat-label{color:var(--text-muted);font-size:.9rem}.export-actions{display:flex;flex-direction:column;gap:2rem}.export-section{padding:1.5rem;background:var(--bg-primary);border-radius:12px;border:1px solid var(--border-color)}.export-section h3{margin:0 0 1rem;color:var(--primary-light);font-size:1.25rem}.export-section.danger-zone{border-color:var(--danger);background:#ef44440d}.btn-export{background:linear-gradient(135deg,var(--success),#059669)}.file-upload-label{display:inline-block;cursor:pointer}.btn-import{display:inline-block;background:linear-gradient(135deg,var(--secondary),#7c3aed);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .3s ease;box-shadow:var(--shadow-md)}.btn-import:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-danger{background:linear-gradient(135deg,var(--danger),#dc2626)}.warning-text{color:var(--text-muted);font-size:.9rem;margin-top:.5rem;margin-bottom:0}.export-status{margin-top:1rem;padding:1rem;border-radius:8px;text-align:center;font-weight:500}.export-status.success{background:#10b9811a;color:var(--success);border:1px solid var(--success)}.export-status.error{background:#ef44441a;color:var(--danger);border:1px solid var(--danger)}.data-management-page{position:fixed;inset:0;background:#0f172af2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:1000;display:flex;align-items:center;justify-content:center;padding:2rem;animation:fadeInOverlay .3s ease;overflow-y:auto}[data-theme=light] .data-management-page{background:#f8fafcf2}@keyframes fadeInOverlay{0%{opacity:0}to{opacity:1}}.data-management-content{width:100%;max-width:900px;background:var(--bg-card);border-radius:20px;padding:2.5rem;box-shadow:var(--shadow-xl);border:1px solid var(--border-color);animation:slideUp .4s ease;position:relative}@keyframes slideUp{0%{opacity:0;transform:translateY(30px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:2px solid var(--border-color)}.page-header h1{margin:0;font-size:2rem;font-weight:700;background:linear-gradient(135deg,var(--primary-light),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.btn-close-page{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color);padding:.5rem 1rem;border-radius:8px;font-size:.9rem;cursor:pointer;transition:all .3s ease}.btn-close-page:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}@media(max-width:768px){.data-management-page{padding:1rem}.data-management-content{padding:1.5rem;border-radius:16px}.page-header{flex-direction:column;gap:1rem;align-items:flex-start}.page-header h1{font-size:1.5rem}.header-buttons{flex-direction:column;width:100%}.header-buttons button{width:100%}}.chatbot-toggle{position:fixed;bottom:2rem;right:2rem;width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;border:none;font-size:1.5rem;cursor:pointer;box-shadow:var(--shadow-xl);z-index:1000;display:flex;align-items:center;justify-content:center;transition:all .3s ease;animation:pulse 2s infinite}.chatbot-toggle:hover{transform:scale(1.1);box-shadow:var(--shadow-glow)}.chatbot-toggle:active{transform:scale(.95)}@keyframes pulse{0%,to{box-shadow:0 0 #6366f1b3}50%{box-shadow:0 0 0 10px #6366f100}}.chatbot-container{position:fixed;bottom:90px;right:2rem;width:400px;max-width:calc(100vw - 4rem);height:600px;max-height:calc(100vh - 120px);background:var(--bg-card);border-radius:20px;box-shadow:var(--shadow-xl);border:1px solid var(--border-color);display:flex;flex-direction:column;z-index:999;animation:slideUp .3s ease;overflow:hidden}.chatbot-header{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.1)}.chatbot-header-content{display:flex;align-items:center;gap:.75rem}.chatbot-icon{font-size:1.5rem}.chatbot-header h3{margin:0;font-size:1.1rem;font-weight:600}.chatbot-subtitle{margin:.25rem 0 0;font-size:.75rem;opacity:.9}.chatbot-header-actions{display:flex;gap:.5rem}.chatbot-clear-btn,.chatbot-close-btn{background:#fff3;border:none;color:#fff;width:32px;height:32px;border-radius:8px;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.chatbot-clear-btn:hover,.chatbot-close-btn:hover{background:#ffffff4d;transform:scale(1.1)}.chatbot-messages{flex:1;overflow-y:auto;padding:1.5rem;display:flex;flex-direction:column;gap:1rem}.chatbot-messages::-webkit-scrollbar{width:6px}.chatbot-messages::-webkit-scrollbar-track{background:var(--bg-secondary);border-radius:3px}.chatbot-messages::-webkit-scrollbar-thumb{background:var(--primary);border-radius:3px}.chatbot-messages::-webkit-scrollbar-thumb:hover{background:var(--primary-dark)}.chatbot-message{display:flex;flex-direction:column;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.user-message .message-content{flex-direction:row-reverse}.assistant-message .message-content{flex-direction:row}.message-content{display:flex;align-items:flex-start;gap:.75rem;max-width:85%}.user-message .message-content{margin-left:auto}.assistant-message .message-content{margin-right:auto}.message-avatar{font-size:1.25rem;flex-shrink:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:50%}.user-message .message-avatar{background:linear-gradient(135deg,var(--primary),var(--primary-dark))}.assistant-message .message-avatar{background:linear-gradient(135deg,var(--secondary),var(--accent))}.message-text{background:var(--bg-secondary);padding:.75rem 1rem;border-radius:12px;color:var(--text-primary);line-height:1.5;font-size:.9rem;border:1px solid var(--border-color);word-wrap:break-word}.user-message .message-text{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border:none}.typing-indicator{display:inline-flex;gap:4px;align-items:center}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:var(--text-muted);animation:typing 1.4s infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.7}30%{transform:translateY(-10px);opacity:1}}.chatbot-input-form{display:flex;gap:.5rem;padding:1rem 1.5rem;border-top:1px solid var(--border-color);background:var(--bg-secondary)}.chatbot-input{flex:1;padding:.75rem 1rem;border:1px solid var(--border-color);border-radius:12px;background:var(--bg-card);color:var(--text-primary);font-size:.9rem;font-family:inherit;transition:all .2s ease}.chatbot-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}.chatbot-input::placeholder{color:var(--text-muted)}.chatbot-send-btn{padding:.75rem 1.25rem;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border:none;border-radius:12px;cursor:pointer;font-size:1.1rem;transition:all .2s ease;display:flex;align-items:center;justify-content:center;min-width:50px}.chatbot-send-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-md)}.chatbot-send-btn:disabled{opacity:.5;cursor:not-allowed}@media(max-width:768px){.chatbot-container{width:calc(100vw - 2rem);right:1rem;bottom:80px;height:calc(100vh - 100px);max-height:calc(100vh - 100px)}.chatbot-toggle{bottom:1rem;right:1rem;width:56px;height:56px;font-size:1.25rem}.message-content{max-width:90%}}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--bg-primary) 0%,#1a1f3a 50%,var(--bg-primary) 100%);padding:2rem}.login-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:24px;padding:3rem 2.5rem;max-width:420px;width:100%;text-align:center;box-shadow:var(--shadow-xl),0 0 60px #6366f126;animation:fadeIn .5s ease}.login-logo{font-size:4rem;margin-bottom:.5rem;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.login-card h1{margin:0 0 .25rem;font-size:2.25rem;font-weight:800;background:linear-gradient(135deg,var(--primary-light),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.login-tagline{color:var(--text-muted);font-size:.95rem;margin:0 0 1.5rem}.login-description{color:var(--text-secondary);font-size:.9rem;line-height:1.7;margin:0 0 2rem}.btn-google-login{display:inline-flex;align-items:center;justify-content:center;gap:.75rem;width:100%;padding:.9rem 1.5rem;background:#fff;color:#333;border:2px solid #e2e8f0;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:var(--shadow-md)}.btn-google-login:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#cbd5e1;background:#f8fafc}.btn-google-login:active{transform:translateY(0)}.google-icon{flex-shrink:0}.login-footer{margin:1.5rem 0 0;font-size:.8rem;color:var(--text-muted)}.auth-loading{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;color:var(--text-muted);font-size:1.1rem}.auth-loading-spinner{width:48px;height:48px;border:4px solid var(--border-color);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.user-info{display:flex;align-items:center;gap:.6rem;padding:.4rem .75rem;background:var(--bg-tertiary);border-radius:50px;border:1px solid var(--border-color)}.user-avatar{width:32px;height:32px;border-radius:50%;object-fit:cover;border:2px solid var(--primary)}.user-name{font-size:.85rem;font-weight:600;color:var(--text-primary);white-space:nowrap}.btn-logout{background:linear-gradient(135deg,var(--bg-tertiary),var(--bg-secondary));color:var(--text-secondary);font-size:.9rem;padding:.65rem 1.25rem;border:1px solid var(--border-color)}.btn-logout:hover{background:linear-gradient(135deg,var(--danger),#dc2626);color:#fff;border-color:var(--danger);box-shadow:var(--shadow-lg),0 0 20px #ef44444d}@media(max-width:768px){.login-card{padding:2rem 1.5rem}.user-name{display:none}.user-info{padding:.3rem}}