*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#f8f9fa,#e9ecef);min-height:100vh;color:#333}.container{max-width:1400px;margin:0 auto;padding:20px}header{text-align:center;padding:30px 0;border-bottom:2px solid #dc3545;margin-bottom:30px}h1{font-size:2.5rem;color:#dc3545;text-shadow:0 0 10px rgba(220,53,69,.2)}.subtitle{color:#6c757d;margin-top:10px;font-size:1.1rem}.logout-btn{margin-top:15px;background:transparent;border:1px solid #dc3545;color:#dc3545;padding:8px 20px;border-radius:6px;cursor:pointer;font-size:.9rem;transition:all .3s ease}.logout-btn:hover{background:#dc3545;color:#fff}.menu{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;margin-bottom:30px}.menu-btn{background:linear-gradient(145deg,#fff,#f8f9fa);border:2px solid #dc3545;color:#dc3545;padding:12px 15px;border-radius:10px;cursor:pointer;font-size:.95rem;font-weight:700;transition:all .3s ease;box-shadow:0 2px 8px #0000001a}.menu-btn:hover,.menu-btn.active{background:#dc3545;color:#fff;transform:translateY(-2px);box-shadow:0 5px 20px #dc35454d}.story-container{display:none}.story-container.active{display:block;animation:fadeIn .5s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.content-wrapper{display:grid;grid-template-columns:1fr 350px;gap:20px}@media (max-width: 1000px){.content-wrapper{grid-template-columns:1fr}}.text-section{background:#fff;border-radius:15px;overflow:hidden;border:3px solid #dc3545;box-shadow:0 10px 40px #0000001a}.text-header{background:linear-gradient(145deg,#fff5f5,#fff);padding:15px 20px;border-bottom:3px solid #dc3545}.text-header h2{color:#dc3545;font-size:1.4rem}.html-viewer{width:100%;height:700px;display:block;border:none;background:#fff}.audio-panel{background:linear-gradient(145deg,#fff,#f8f9fa);border-radius:15px;padding:20px;border:2px solid #dee2e6;box-shadow:0 10px 40px #00000014;height:fit-content}.audio-title{font-size:1.3rem;color:#dc3545;margin-bottom:20px;padding-bottom:15px;border-bottom:2px solid #dee2e6}.audio-item{background:#fff;border-radius:10px;padding:15px;margin-bottom:15px;border:1px solid #dee2e6}.step-label{font-size:1rem;color:#dc3545;font-weight:700;margin-bottom:10px}audio{width:100%}audio::-webkit-media-controls-panel{background:#f8f9fa}.footer{text-align:center;margin-top:40px;padding:20px;color:#6c757d;border-top:1px solid #dee2e6}.login-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.login-overlay.hidden{display:none}.login-card{background:#fff;border-radius:20px;padding:40px;width:100%;max-width:420px;box-shadow:0 20px 60px #0000004d;animation:slideUp .5s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.login-icon{text-align:center;margin-bottom:30px}.login-icon svg{width:80px;height:80px;color:#dc3545}.login-title{text-align:center;font-size:1.8rem;color:#333;margin-bottom:10px}.login-subtitle{text-align:center;color:#6c757d;margin-bottom:30px;font-size:.95rem}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;color:#495057;font-weight:600;font-size:.95rem}.form-group input{width:100%;padding:14px 16px;border:2px solid #dee2e6;border-radius:10px;font-size:1rem;transition:all .3s ease;outline:none}.form-group input:focus{border-color:#dc3545;box-shadow:0 0 0 3px #dc35451a}.form-group input::placeholder{color:#adb5bd}.error-message{background:#fff5f5;border:1px solid #f8d7da;color:#dc3545;padding:12px 16px;border-radius:8px;margin-bottom:20px;font-size:.9rem;text-align:center;display:none}.error-message.show{display:block;animation:shake .5s ease}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.login-btn{width:100%;padding:14px;background:linear-gradient(135deg,#dc3545,#c82333);border:none;border-radius:10px;color:#fff;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #dc35454d}.login-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #dc354566}.login-btn:active{transform:translateY(0)}.login-btn:disabled{opacity:.7;cursor:not-allowed;transform:none}.login-footer{text-align:center;margin-top:25px;color:#6c757d;font-size:.85rem}@media (max-width: 480px){.login-card{padding:25px}.login-title{font-size:1.5rem}.form-group input{padding:12px 14px}h1{font-size:1.8rem}.container{padding:10px}.html-viewer{height:500px}}