:root{--primary-color: #4f46e5;--primary-hover: #4338ca;--primary-light: #eef2ff;--secondary-color: #1f2937;--background-color: #f8fafc;--surface-color: #ffffff;--text-color: #374151;--text-muted: #6b7280;--heading-color: #111827;--border-color: #e5e7eb;--border-radius: 12px;--success-color: #10b981;--error-color: #ef4444;--warning-color: #f59e0b;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .07), 0 2px 4px -1px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .07), 0 4px 6px -2px rgba(0, 0, 0, .04);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--transition-speed: .3s;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--max-width: 1280px}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-sans);margin:0;background-color:var(--background-color);color:var(--text-color);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:1rem;line-height:1.3;font-weight:700;color:var(--heading-color)}h1{font-size:clamp(2rem,5vw,2.5rem)}h2{font-size:clamp(1.5rem,4vw,2rem)}h3{font-size:clamp(1.25rem,3vw,1.5rem)}a{color:var(--primary-color);text-decoration:none;transition:color var(--transition-speed) ease}a:hover{color:var(--primary-hover)}@keyframes spin{to{transform:rotate(360deg)}}.spinner{display:inline-block;width:1.2em;height:1.2em;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .75s linear infinite;margin-right:.5rem;vertical-align:text-bottom}@keyframes float{0%{transform:translatey(0)}50%{transform:translatey(-15px)}to{transform:translatey(0)}}.table-responsive-wrapper{overflow-x:auto;width:100%;border:1px solid var(--border-color);border-radius:var(--border-radius)}.app-container{display:flex;flex-direction:column;min-height:100vh}main{flex-grow:1;padding:1.5rem;max-width:var(--max-width);margin:0 auto;width:100%}header{background-color:var(--surface-color);box-shadow:var(--shadow-sm);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:1000;padding:0 1.5rem}.navbar-container{display:flex;justify-content:space-between;align-items:center;max-width:var(--max-width);margin:0 auto;height:72px}footer{background-color:var(--secondary-color);color:#9ca3af;padding:2.5rem 1.5rem;margin-top:3rem}.footer-content{max-width:var(--max-width);margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1.5rem}.footer-logo{display:flex;align-items:center;gap:.75rem;font-weight:500;color:#fff}.footer-logo img{height:32px}button,input[type=submit]{font-family:inherit;font-size:1rem;border-radius:var(--border-radius);border:none;padding:.75rem 1.5rem;transition:all var(--transition-speed) ease-in-out;cursor:pointer;background:linear-gradient(145deg,var(--primary-color),#6d28d9);color:#fff;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;box-shadow:var(--shadow-sm)}button:hover:not(:disabled){background:linear-gradient(145deg,var(--primary-hover),#5b21b6);transform:translateY(-2px);box-shadow:var(--shadow-md)}button:disabled{opacity:.5;cursor:not-allowed}.back-button,.export-buttons button{background:transparent;border:1px solid var(--border-color);color:var(--text-color);box-shadow:var(--shadow-sm)}.back-button:hover,.export-buttons button:hover{background-color:var(--background-color);border-color:#d1d5db;transform:translateY(-2px);box-shadow:var(--shadow-md)}input,select,textarea{font-family:inherit;font-size:1rem;border-radius:var(--border-radius);border:1px solid var(--border-color);padding:.75rem 1rem;transition:all var(--transition-speed) ease;width:100%;background-color:var(--surface-color)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #4f46e526}label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--heading-color)}.control-group,.form-group{margin-bottom:1.5rem}.status-message{padding:1rem;border-radius:var(--border-radius);margin:1rem 0;text-align:center;font-weight:500;border:1px solid transparent}.status-message.error{background-color:#fee2e2;color:#b91c1c;border-color:#fca5a5}.status-message.success{background-color:#d1fae5;color:#065f46;border-color:#6ee7b7}.mcq-card,.clinical-case-card,.resource-card,.calculator-card,.simulation-results-view .results-summary-card,.simulation-results-view .analysis-card,.simulation-results-view .leaderboard-card,.post-list-item,.post-detail-view,.reply-item,.dx-helper-response{background-color:var(--surface-color);border-radius:var(--border-radius);padding:clamp(1.5rem,3vw,2rem);margin-bottom:1.5rem;box-shadow:var(--shadow-md);transition:all var(--transition-speed) ease-in-out}.post-list-item:hover,.resource-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}table{width:100%;border-collapse:collapse}th,td{padding:1rem;text-align:left;border-bottom:1px solid var(--border-color)}th{font-weight:600;background-color:var(--background-color);color:var(--heading-color);font-size:.9rem;text-transform:uppercase;letter-spacing:.05em}tbody tr:last-child td{border-bottom:none}tbody tr:hover{background-color:var(--primary-light)}.navbar-logo{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--heading-color);font-weight:600;font-size:1.25rem}.navbar-logo img{height:40px}.nav-links{display:flex;align-items:center;gap:.5rem}.nav-links button,.dropdown>button{background:none;border:none;color:var(--text-muted);font-weight:500;padding:.6rem 1rem;border-radius:var(--border-radius);transition:all var(--transition-speed) ease}.nav-links button:hover,.dropdown>button:hover{color:var(--primary-color);background-color:var(--primary-light)}.nav-links button.active{color:var(--primary-color);background-color:var(--primary-light);font-weight:600}.dropdown{position:relative;display:inline-block}.dropdown-content{display:none;position:absolute;background-color:var(--surface-color);min-width:240px;box-shadow:var(--shadow-lg);z-index:1;border-radius:var(--border-radius);overflow:hidden;right:0;margin-top:.75rem;border:1px solid var(--border-color);padding:.5rem 0}.dropdown-content button{width:100%;text-align:left;border-radius:0;padding:.75rem 1.25rem;color:var(--text-color);font-weight:500}.dropdown-content button:hover{color:var(--primary-color);background-color:var(--primary-light)}.dropdown:hover .dropdown-content{display:block}.header-right{display:flex;align-items:center;gap:1rem}.auth-section{display:flex;align-items:center;justify-content:flex-end;min-height:40px}.user-profile{display:flex;align-items:center;gap:.75rem}.user-profile-picture{width:36px;height:36px;border-radius:50%;object-fit:cover}.user-profile-name{font-weight:500;color:var(--text-color);font-size:.9rem;white-space:nowrap}.logout-button{background:var(--error-color)!important;padding:.5rem 1rem!important;font-size:.9rem!important;font-weight:500!important}.logout-button:hover{background:#dc2626!important;box-shadow:var(--shadow-md)!important}.mobile-menu-icon{display:none;background:none;border:none;padding:.5rem;cursor:pointer;z-index:1001}.mobile-menu-icon svg{width:28px;height:28px;stroke:var(--heading-color)}.lecturio-hero{position:relative;display:flex;align-items:center;color:#fff;border-radius:var(--border-radius);overflow:hidden;margin-bottom:3rem;padding:3rem 1.5rem;background-image:url(https://i.postimg.cc/C5j8PLRk/pav-vide.png);background-size:cover;background-position:center;min-height:400px}.hero-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(75deg,#1e293be6,#4f46e5b3)}.hero-content{position:relative;max-width:var(--max-width);width:100%;z-index:2}.hero-text h1{font-size:clamp(2rem,5vw,3.75rem);font-weight:800;margin-bottom:1.5rem;line-height:1.2;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.3);max-width:650px}.hero-text p{font-size:clamp(1rem,2.5vw,1.25rem);margin-bottom:2.5rem;opacity:.9;max-width:600px;text-shadow:0 1px 5px rgba(0,0,0,.2)}.cta-button{font-size:1.2rem;padding:1rem 2.5rem;border-radius:50px;font-weight:700;background:#fff;color:var(--primary-color);border:none;box-shadow:var(--shadow-lg)}.cta-button:hover{background:var(--primary-light);transform:translateY(-3px) scale(1.05);box-shadow:var(--shadow-xl)}.features-section{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;margin-bottom:3rem}.feature-card{background:var(--surface-color);padding:2rem;text-align:center;border-radius:var(--border-radius);box-shadow:var(--shadow-md);transition:transform var(--transition-speed) ease,box-shadow var(--transition-speed) ease}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.feature-icon{color:var(--primary-color);margin-bottom:1rem}.feature-icon svg{width:48px;height:48px;margin:0 auto}.feature-card h3{margin:0;font-size:1.25rem;color:var(--heading-color)}.video-guide-section{text-align:center;background:var(--surface-color);padding:3rem 1.5rem;border-radius:var(--border-radius);box-shadow:var(--shadow-md)}.video-guide-section h2{margin-bottom:2rem}.video-container{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;border-radius:var(--border-radius);box-shadow:var(--shadow-lg)}.video-container iframe{position:absolute;top:0;left:0;width:100%;height:100%}.controls-section{background:var(--surface-color);padding:2rem;border-radius:var(--border-radius);box-shadow:var(--shadow-md);margin-bottom:2.5rem;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;align-items:end}.results-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1.5rem;margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-color)}.export-buttons{display:flex;gap:.75rem;flex-wrap:wrap}.quiz-score{background:linear-gradient(135deg,var(--primary-light),#f0f2ff);color:var(--primary-hover);padding:1.5rem;border-radius:var(--border-radius);margin-bottom:2rem;text-align:center;border:1px solid var(--primary-color)}.options{list-style:none;padding:0;margin:1.5rem 0;display:flex;flex-direction:column;gap:.75rem}.option-item{border:1px solid var(--border-color);padding:1rem 1.25rem;border-radius:var(--border-radius);cursor:pointer;transition:all var(--transition-speed) ease;display:flex;gap:1rem;align-items:center}.option-item:hover{border-color:var(--primary-color);background-color:var(--primary-light);transform:scale(1.02)}.option-item.selected-option{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color);box-shadow:0 0 10px #4f46e54d}.option-item.disabled-option{cursor:not-allowed;opacity:.9}.option-item.correct-answer-disclosed{background-color:#d1fae5;border-color:var(--success-color);color:#065f46;font-weight:500}.option-item.incorrect-selection-disclosed{background-color:#fee2e2;border-color:var(--error-color);color:#991b1b;font-weight:500}.answer-section{background-color:var(--background-color);padding:1.5rem;border-radius:var(--border-radius);margin-top:1.5rem;border-left:5px solid var(--primary-color)}.quiz-navigation{display:flex;justify-content:space-between;align-items:center;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border-color)}.question-text{font-size:1.1rem;line-height:1.6;margin:1rem 0}.temas-module{background:var(--surface-color);padding:2rem;border-radius:var(--border-radius);box-shadow:var(--shadow-md)}.temas-container{display:grid;grid-template-columns:320px 1fr;gap:2rem;margin-top:2rem}.temas-materia-list{display:flex;flex-direction:column;gap:.5rem;max-height:75vh;overflow-y:auto;border-right:1px solid var(--border-color);padding-right:2rem}.temas-materia-item{width:100%;text-align:left;background-color:transparent;border:none;color:var(--text-color);padding:.8rem 1rem;display:flex;justify-content:space-between;align-items:center;border-radius:var(--border-radius)}.temas-materia-item:hover{background-color:var(--background-color)}.temas-materia-item.active{background-color:var(--primary-color);color:#fff;font-weight:600;box-shadow:var(--shadow-md)}.temas-materia-item .materia-count{font-size:.8rem;padding:.2rem .5rem;border-radius:20px;background-color:#0000000d;color:var(--text-muted)}.temas-materia-item.active .materia-count{background-color:#fff3;color:#fff}.temas-detail-panel .prompt{text-align:center;color:var(--text-muted);padding:3rem;background-color:var(--background-color);border-radius:var(--border-radius)}.tema-detail-view .tema-section{margin-bottom:2.5rem}.topic-list-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1rem;margin-top:1.5rem}.topic-list-item-button{background-color:var(--surface-color);border:1px solid var(--border-color);color:var(--text-color);font-weight:500}.contact-module{background:var(--surface-color);padding:2.5rem;border-radius:var(--border-radius);box-shadow:var(--shadow-md);max-width:1100px;margin:2rem auto}.contact-module h2{text-align:center;margin-bottom:3rem}.contact-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:3rem;align-items:flex-start}.contact-description{color:var(--text-muted);margin-bottom:2rem;line-height:1.7}.contact-card{display:flex;align-items:center;gap:1.5rem;padding:1.25rem;border:1px solid transparent;border-radius:var(--border-radius);transition:all var(--transition-speed) ease;text-decoration:none;color:inherit;background-color:var(--background-color);margin-bottom:1rem}.contact-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--primary-light);background-color:var(--surface-color)}.contact-card-icon{flex-shrink:0;width:48px;height:48px;background-color:var(--primary-light);color:var(--primary-color);border-radius:50%;display:flex;align-items:center;justify-content:center}.contact-card-icon svg{width:24px;height:24px}.contact-card-text h4{margin:0 0 .25rem;font-weight:600;font-size:1rem;color:var(--heading-color)}.suggestion-form{padding:2.5rem;border:1px solid var(--border-color);border-radius:var(--border-radius);background-color:var(--surface-color)}.star-rating{display:flex;gap:.5rem}.star-rating-svg{width:28px;height:28px;cursor:pointer;color:var(--border-color);transition:all .2s ease}.star-rating-svg:hover{transform:scale(1.2);color:var(--warning-color)}.star-rating-svg.filled{color:var(--warning-color)}.ai-tutor-module{max-width:800px;margin:2rem auto;background-color:var(--surface-color);padding:1.5rem;border-radius:var(--border-radius);box-shadow:var(--shadow-md);display:flex;flex-direction:column;height:80vh}.chat-messages-container{flex-grow:1;overflow-y:auto;padding:1rem;background-color:var(--background-color);border-radius:var(--border-radius);margin-bottom:1rem;display:flex;flex-direction:column;gap:1rem}.chat-message{padding:.8rem 1.2rem;border-radius:18px;max-width:80%;line-height:1.6;word-wrap:break-word}.chat-message.user-message{background-color:var(--primary-color);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}.chat-message.tutor-message{background-color:#e5e7eb;color:var(--heading-color);align-self:flex-start;border-bottom-left-radius:4px}.chat-message.tutor-message .spinner{color:var(--primary-color)}.chat-input-form{display:flex;gap:.75rem;border-top:1px solid var(--border-color);padding-top:1rem}.chat-input-form button{width:48px;height:48px;padding:.75rem;border-radius:50%}.chat-input-form button svg{width:24px;height:24px}.progress-module{background-color:var(--surface-color);padding:2.5rem;border-radius:var(--border-radius);box-shadow:var(--shadow-md);margin:2rem auto}.progress-bar-container{width:100%;height:24px;background-color:var(--border-color);border-radius:20px;position:relative;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--primary-color),#818cf8);transition:width .5s ease-in-out;border-radius:20px}.progress-bar-container span{position:absolute;width:100%;text-align:center;color:#fff;font-weight:600;font-size:.875rem;line-height:24px;text-shadow:0 1px 1px rgba(0,0,0,.2)}.no-data-message{text-align:center;color:var(--text-muted);padding:2.5rem;background-color:var(--background-color);border-radius:var(--border-radius);margin-top:1.5rem;border:1px dashed var(--border-color)}.support-us-fab{position:fixed;bottom:20px;right:20px;z-index:1001;border-radius:25px;padding:.75rem 1.25rem;font-weight:600}.whatsapp-float{position:fixed;width:60px;height:60px;bottom:20px;left:20px;background-color:#25d366;color:#fff;border-radius:50%;text-align:center;font-size:30px;box-shadow:var(--shadow-lg);z-index:1001;display:flex;align-items:center;justify-content:center;transition:all var(--transition-speed) ease}.whatsapp-float:hover{transform:translateY(-3px) scale(1.1);box-shadow:var(--shadow-xl)}.whatsapp-float img{width:32px;height:32px}@media(max-width:1024px){.navbar-collapsible-content{position:fixed;top:0;right:-100%;width:300px;height:100vh;background-color:var(--surface-color);box-shadow:var(--shadow-xl);flex-direction:column;align-items:flex-start;justify-content:flex-start;padding:6rem 2rem 2rem;gap:1.5rem;transition:right .4s cubic-bezier(.25,.46,.45,.94)}.navbar-collapsible-content.open{right:0}.mobile-menu-icon{display:block}.nav-links{flex-direction:column;align-items:flex-start;width:100%}.nav-links button,.dropdown{width:100%}.dropdown-content{position:static;display:flex;flex-direction:column;box-shadow:none;border:none;min-width:unset;padding:0;margin-top:.5rem}.dropdown-content button{padding-left:2rem}.dropdown:hover .dropdown-content{display:flex}.header-right{flex-direction:column;align-items:flex-start;width:100%;border-top:1px solid var(--border-color);padding-top:1.5rem}.auth-section{width:100%;justify-content:flex-start}.user-profile{width:100%;justify-content:space-between}.temas-container{grid-template-columns:280px 1fr}.contact-grid{grid-template-columns:1fr;gap:2rem}.hero-text h1{max-width:none}}@media(max-width:768px){main{padding:1rem}header{padding:0 1rem}.hero-content{text-align:center}.hero-text{display:flex;flex-direction:column;align-items:center}.temas-container{grid-template-columns:1fr}.temas-materia-list{max-height:40vh;border-right:none;border-bottom:1px solid var(--border-color);padding-right:0;padding-bottom:1.5rem;margin-bottom:1.5rem}.footer-content{flex-direction:column;text-align:center}}@media(max-width:480px){.results-header{flex-direction:column;align-items:stretch}.export-buttons{justify-content:center}.quiz-navigation{flex-direction:column;gap:1rem}.quiz-navigation span{order:-1}.quiz-navigation button{width:100%}.whatsapp-float{width:50px;height:50px;bottom:15px;left:15px}.support-us-fab{bottom:15px;right:15px;padding:.6rem 1rem;font-size:.9rem}.user-profile-name{display:none}}