html,body{height:100%;margin:0}body{display:flex;flex-direction:column}.main-content{flex:1;display:flex;flex-direction:column}:root{--primary-color: #005f87;--primary-color-dark: #004e70;--primary-color-light: #d1e8f3;--secondary-color: #ff6f61;--secondary-color-dark: #e55b4d;--background-color: #f8f9fa;--text-color: #222222;--white: #ffffff;--box-shadow: 0 4px 12px rgba(0, 0, 0, .1);--border-radius: 16px;--transition-speed: .3s}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Roboto,sans-serif;background-color:var(--background-color);color:var(--text-color);line-height:1.6;font-size:16px;overflow-x:hidden}.app-container{max-width:1200px;margin:0 auto;padding:1.25rem}@media (max-width: 576px){.app-container{padding:.5rem .6rem;margin:0}}.app-header{display:flex;justify-content:space-between;align-items:center;padding:1.25rem 0;margin-bottom:1.875rem;border-bottom:2px solid var(--primary-color)}@media (max-width: 576px){.app-header{font-size:1rem}}.app-header .logo{display:flex;align-items:center;text-decoration:none}@media (max-width: 576px){.app-header .logo{margin-bottom:.3rem}}.app-header .logo-image{width:50px;height:auto;margin-right:10px}@media (max-width: 576px){.app-header .logo-image{width:30px}}.app-header .logo-text-ai{font-size:1.5rem;font-weight:700;color:var(--primary-color-dark);transition:color var(--transition-speed);margin-right:5px}.app-header .logo-text-revision{font-size:1.5rem;font-weight:700;color:var(--secondary-color);transition:color var(--transition-speed)}.app-header nav{display:flex;gap:1.25rem}.app-header nav .nav-link{text-decoration:none;color:var(--text-color);font-weight:600;transition:color var(--transition-speed)}.app-header nav .nav-link:hover{color:var(--primary-color)}.logo svg{width:180px;height:auto;fill:var(--primary-color-dark);transition:fill var(--transition-speed)}.logo svg path,.logo svg rect,.logo svg circle,.logo svg polygon,.logo svg ellipse{fill:var(--primary-color-dark);transition:fill var(--transition-speed)}.logo svg:hover,.logo svg:hover path,.logo svg:hover rect,.logo svg:hover circle,.logo svg:hover polygon,.logo svg:hover ellipse{fill:var(--primary-color)}.quiz-container{margin:0;padding:0;display:flex;flex-direction:column;align-items:center;min-height:80vh;width:100%}.quiz-container .quiz-header{margin-bottom:1.25rem;text-align:center}.quiz-container .quiz-header h2{color:var(--text-color);font-size:2rem}@media (max-width: 576px){.quiz-container .quiz-header h2{font-size:1.5rem}}@media (max-width: 576px){.quiz-container{padding:.5rem 0rem;margin:0}}.quiz-container .question-card{margin:0;background-color:var(--white);width:100%;max-width:70rem;padding:1.875rem;border-radius:var(--border-radius);box-shadow:var(--box-shadow);transition:transform var(--transition-speed)}@media (max-width: 576px){.quiz-container .question-card{padding:.5rem .3rem;margin:0;font-size:.8rem}}.quiz-container .question-card:hover{transform:translateY(-5px)}.quiz-container .question-card .question-navigation{display:flex;align-items:center;gap:1.25rem;margin-bottom:1rem}.quiz-container .question-card .arrowtop{display:flex;flex-direction:row;align-items:center;justify-content:center;gap:4rem;padding-bottom:1rem;width:100%}.quiz-container .question-card .arrowtop h3{padding-top:.5rem}@media (max-width: 576px){.quiz-container .question-card .arrowtop{gap:1rem}}.quiz-container .question-card .nav-arrow{background-color:var(--primary-color);color:var(--white);border:none;padding:.625rem;font-size:1.5rem;cursor:pointer;transition:background-color var(--transition-speed);border-radius:50%}.quiz-container .question-card .nav-arrow:hover{background-color:var(--primary-color-dark)}@media (max-width: 576px){.quiz-container .question-card .nav-arrow{padding:.5rem;font-size:.5rem}}.quiz-container .question-card .question-content{flex-grow:1;text-align:center;font-size:1.2rem}.quiz-container .question-card .question-content h3{color:var(--text-color);margin-bottom:.9375rem;font-size:1.5rem}@media (max-width: 576px){.quiz-container .question-card .question-content h3{font-size:1.25rem}}@media (max-width: 576px){.quiz-container .question-card .question-content h3 .question-content h3{font-size:1.4rem}.quiz-container .question-card .question-content h3 .answer-section p{font-size:1.05rem}}.quiz-container .question-card .question-content .answer-section{margin:0;margin-top:1.5rem;margin-bottom:1.5rem;padding-bottom:1rem;padding-top:1rem;background-color:var(--primary-color-light);border-radius:var(--border-radius);word-wrap:break-word;overflow-wrap:break-word;line-height:1.7;width:100%;max-width:100%;box-sizing:border-box}.quiz-container .question-card .question-content .quiz-controls{margin-top:1.25rem}.quiz-container .question-card .question-content .quiz-controls .toggle-answer-btn{background-color:var(--secondary-color);color:var(--white);border:none;border-radius:var(--border-radius);cursor:pointer;transition:background-color var(--transition-speed);font-size:1rem;padding:.75rem 1.5rem}.quiz-container .question-card .question-content .quiz-controls .toggle-answer-btn:hover{background-color:var(--secondary-color-dark)}.home-container{text-align:center;padding:3.125rem 1.25rem;min-height:82vh}.home-container h1{color:var(--text-color);margin-bottom:1.25rem;font-size:2.5rem}@media (max-width: 576px){.home-container h1{font-size:1.6rem}}.home-container .home-actions{display:flex;justify-content:center;gap:1.25rem;margin-top:1.875rem}.home-container .home-actions .action-button{text-decoration:none;padding:.75rem 1.5625rem;background-color:var(--primary-color);color:var(--white);border-radius:var(--border-radius);transition:background-color var(--transition-speed)}.home-container .home-actions .action-button:hover{background-color:var(--primary-color-dark)}.subject-selection{min-height:82vh;text-align:center;padding:2rem 1rem}.subject-selection h2{color:var(--text-color);margin-bottom:1.875rem;font-size:2rem}@media (max-width: 576px){.subject-selection h2{font-size:1.6rem}}.subject-selection .subjects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.25rem}.subject-selection .subjects-grid .subject-card{background-color:var(--white);padding:1.25rem;border-radius:var(--border-radius);box-shadow:var(--box-shadow);transition:transform var(--transition-speed),box-shadow var(--transition-speed)}.subject-selection .subjects-grid .subject-card:hover{transform:translateY(-5px);box-shadow:0 6px 12px #00000026}.subject-selection .subjects-grid .subject-card h3{margin-bottom:.9375rem;color:var(--text-color);font-size:1.5rem}.subject-selection .subjects-grid .subject-card .exam-boards{display:flex;flex-direction:column;gap:.625rem}.subject-selection .subjects-grid .subject-card .exam-boards .board-button{text-decoration:none;padding:.625rem;background-color:var(--secondary-color);color:var(--white);border-radius:var(--border-radius);transition:background-color var(--transition-speed)}.subject-selection .subjects-grid .subject-card .exam-boards .board-button:hover{background-color:var(--secondary-color-dark)}.subject-selection .coming-soon{padding-top:4rem;display:flex;justify-content:center;align-items:center;font-size:1.5rem;color:var(--text-color)}.topic-selection{padding:2rem 1rem;min-height:80vh;flex-grow:1}.topic-selection h2{text-align:center;color:var(--text-color);margin-bottom:2rem;font-size:2rem}.topic-selection .topics-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.5rem}.topic-selection .topics-grid .topic-card{display:block;background-color:var(--white);color:var(--primary-color-dark);text-decoration:none;padding:1.5rem;border-radius:var(--border-radius);text-align:center;font-weight:600;box-shadow:var(--box-shadow);transition:all var(--transition-speed)}.topic-selection .topics-grid .topic-card:hover{transform:translateY(-5px);box-shadow:0 6px 8px #00000026;background-color:var(--secondary-color);color:var(--white)}.app-footer{width:100vw;position:relative;left:50%;right:50%;margin-left:-50vw;margin-right:-50vw;height:auto;min-height:100px;background:linear-gradient(135deg,var(--primary-color-dark),var(--primary-color));padding:1.5rem 1rem;border-top:2px solid var(--primary-color);box-sizing:border-box}.app-footer .footer-content{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.app-footer .footer-content .footer-section h4{color:var(--white);margin-bottom:.75rem;font-size:1.1rem;border-bottom:2px solid var(--secondary-color);padding-bottom:.5rem;padding-left:1rem}.app-footer .footer-content .footer-section p{color:var(--white);margin-bottom:.5rem;padding-left:1rem}.app-footer .footer-content .footer-section ul{list-style:none;padding-left:1rem}.app-footer .footer-content .footer-section ul li{margin-bottom:.4rem}.app-footer .footer-content .footer-section ul li a{text-decoration:none;color:var(--white);transition:color var(--transition-speed)}.app-footer .footer-content .footer-section ul li a:hover{color:var(--primary-color-light)}@media (max-width: 768px){.app-header{flex-direction:column;gap:1rem}.footer-content{grid-template-columns:1fr;text-align:center}}.about-container{max-width:1200px;margin:0 auto;padding:0 1.25rem}.about-hero{background:linear-gradient(135deg,var(--primary-color),var(--primary-color-dark));color:#fff;padding:5rem 2rem;text-align:center;border-radius:0 0 var(--border-radius) var(--border-radius);margin-bottom:3rem;position:relative;overflow:hidden}.about-hero:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none" opacity="0.05"><path d="M0,0 L100,0 L100,100 L0,100 Z" fill="white"/></svg>');background-size:30px 30px}.hero-content{position:relative;z-index:1;max-width:800px;margin:0 auto}.about-hero h1{font-size:3.5rem;margin-bottom:1rem;font-weight:800}.hero-subtitle{font-size:1.5rem;opacity:.9;font-weight:300}.gradient-text{background:linear-gradient(90deg,#4facfe,#00f2fe);-webkit-background-clip:text;background-clip:text;color:transparent;display:inline-block}.about-intro{margin-bottom:4rem;text-align:center}.intro-content{max-width:800px;margin:0 auto}.intro-content h2{font-size:2rem;margin-bottom:1.5rem;color:var(--primary-color)}.intro-text{font-size:1.25rem;line-height:1.8;color:var(--text-color)}.features-section{margin-bottom:5rem}.section-title{text-align:center;font-size:2rem;margin-bottom:3rem;color:var(--primary-color);position:relative}.section-title:after{content:"";display:block;width:80px;height:4px;background:linear-gradient(90deg,var(--primary-color),var(--secondary-color));margin:1rem auto 0;border-radius:2px}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.feature-card{background:#fff;border-radius:var(--border-radius);padding:2rem;box-shadow:0 10px 30px #0000000d;transition:transform .3s ease,box-shadow .3s ease;border:1px solid rgba(0,0,0,.05)}.feature-card:hover{transform:translateY(-5px);box-shadow:0 15px 35px #0000001a}.feature-icon{width:80px;height:80px;background:linear-gradient(135deg,var(--primary-color-light),white);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;color:var(--primary-color);box-shadow:0 5px 15px #005f871a}.feature-card h3{font-size:1.5rem;margin-bottom:1rem;text-align:center;color:var(--primary-color-dark)}.feature-card p{color:var(--text-color);text-align:center;line-height:1.7}.mission-section{background:linear-gradient(135deg,var(--primary-color-light),white);border-radius:var(--border-radius);padding:4rem 2rem;margin-bottom:4rem}.mission-content{max-width:1200px;margin:0 auto;display:flex;flex-direction:column;align-items:center}.mission-text{text-align:center;max-width:800px;margin-bottom:3rem}.mission-text h2{font-size:2rem;color:var(--primary-color);margin-bottom:1.5rem}.mission-text p{font-size:1.25rem;line-height:1.8;color:var(--text-color)}.mission-stats{display:flex;justify-content:center;flex-wrap:wrap;gap:3rem;width:100%}.stat-item{text-align:center;padding:1.5rem;background:#fff;border-radius:var(--border-radius);box-shadow:0 5px 15px #0000000d;min-width:200px;transition:transform .3s ease}.stat-item:hover{transform:translateY(-5px)}.stat-item svg{color:var(--secondary-color);margin-bottom:1rem}.stat-item span{display:block;font-size:2.5rem;font-weight:700;color:var(--primary-color);margin-bottom:.5rem}.stat-item p{color:var(--text-color);font-size:1rem}@media (max-width: 768px){.about-hero h1{font-size:2.5rem}.hero-subtitle{font-size:1.2rem}.mission-stats{flex-direction:column;align-items:center;gap:1.5rem}.stat-item{width:100%;max-width:300px}}@media (max-width: 480px){.about-hero{padding:3rem 1rem}.about-hero h1{font-size:2rem}.features-grid{grid-template-columns:1fr}}.source-details{margin-top:1rem;border:1px solid #ddd;padding:1rem;border-radius:8px;background-color:#f9f9f9;width:95%;max-width:70rem;margin-left:auto;margin-right:auto}.source-content{font-size:1.2rem;line-height:1.6}.source-summary{color:#333}.source-summary .sumaryText{border:2px solid #333;padding:10px;margin:15px 0;border-radius:5px}.source-text{white-space:normal;margin-top:1rem;width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.numberText{padding-left:2rem;display:flex;flex-direction:row;gap:4rem;align-items:baseline;text-align:left}.source-line{line-height:1.6}.line-number{color:#777;width:2em;text-align:right;margin-right:1.5em;font-size:.8rem;flex-shrink:0;line-height:1.6}.text{background-color:inherit}@media (max-width: 600px){.source-details{padding:.8rem;width:98%}.source-details summary{font-size:.9rem}.source-line{font-size:.9rem}.line-number{font-size:.75rem;width:1em}.numberText{padding-left:0rem;display:flex;gap:0}}@media (max-width: 400px){.source-details{padding:.6rem}.source-line{font-size:.85rem}}@tailwind base;@tailwind components;@tailwind utilities;@layer base{body{@apply bg-[#f4f4f4] text-[#333] font-sans leading-[1.6] m-0 p-0;}}@layer components{.app-container{@apply max-w-[1200px] mx-auto p-5;}.app-header{@apply flex justify-between items-center py-4 mb-8 border-b-2 border-[#3498db];}.app-header .logo{@apply text-[1.8rem] font-bold text-[#3498db] no-underline visited:text-[#3498db] hover:text-[#3498db];}.app-header nav{@apply flex gap-5;}.app-header .nav-link{@apply no-underline text-[#333] font-semibold transition-colors duration-300 hover:text-[#3498db];}.quiz-container{@apply flex justify-center items-center flex-col min-h-[70vh];}.quiz-header{@apply mb-5 text-center;}.quiz-header h2{@apply text-[#3498db];}.question-card{@apply bg-white w-full max-w-[700px] p-8 rounded-lg shadow-[0_4px_6px_rgba(0,0,0,.1)];}.question-navigation{@apply flex items-center gap-5;}.nav-arrow{@apply bg-[#3498db] text-white border-none px-4 py-2 text-2xl cursor-pointer transition-colors duration-300 hover:bg-[#2980b9];}.question-content{@apply flex-grow text-center;}.question-content h3{@apply text-[#333] mb-4;}.answer-section{@apply mt-5 p-4 bg-[#ebf5fb] rounded;}.quiz-controls{@apply mt-5;}.toggle-answer-btn{@apply bg-[#2ecc71] text-white border-none px-5 py-2 rounded cursor-pointer transition-colors duration-300 hover:bg-[#27ae60];}.home-container{@apply text-center py-12 h-[40rem];}.home-container h1{@apply text-[#3498db] mb-5;}.home-actions{@apply flex justify-center gap-5 mt-8;}.action-button{@apply no-underline py-3 px-6 bg-[#3498db] text-white rounded transition-colors duration-300 hover:bg-[#2980b9];}.subject-selection{@apply h-[40rem] text-center;}.subject-selection h2{@apply text-[#3498db] mb-8;}.subjects-grid{@apply grid grid-cols-3 gap-5 md:grid-cols-1;}.subject-card{@apply bg-white p-5 rounded-lg shadow-[0_4px_6px_rgba(0,0,0,.1)];}.subject-card h3{@apply mb-4 text-[#333];}.exam-boards{@apply flex flex-col gap-2;}.board-button{@apply no-underline p-2 bg-[#2ecc71] text-white rounded transition-colors duration-300 hover:bg-[#27ae60];}.topic-selection{@apply py-8;}.topic-selection h2{@apply text-center text-[#3498db] mb-8;}.topics-grid{@apply grid grid-cols-[repeat(auto-fill,minmax(250px,1fr))] gap-6 md:grid-cols-1;}.topic-card{@apply block bg-white text-[#3498db] no-underline p-6 rounded-lg text-center font-semibold shadow-[0_4px_6px_rgba(0,0,0,.1)] transition-all duration-300 hover:translate-y-[-5px] hover:shadow-[0_6px_8px_rgba(0,0,0,.15)] hover:bg-[#2ecc71] hover:text-white;}.app-footer{@apply bg-[#2980b9] py-8 mt-8 border-t-2 border-[#3498db];}.footer-content{@apply mx-auto grid grid-cols-3 gap-8 md:grid-cols-1 md:text-center;}.footer-section h4{@apply text-[#a3cfec] mb-4 text-lg border-b-2 border-[#2ecc71] pb-2 pl-4;}.footer-section p{@apply text-[#333] mb-2 pl-4;}.footer-section ul{@apply list-none p-0;}.footer-section ul li{@apply mb-2;}.footer-section ul li a{@apply no-underline text-[#333] transition-colors duration-300 hover:text-[#3498db];}.coming-soon{@apply pt-16 flex justify-center items-center;}}.loading{@apply text-lg text-[#333] font-medium;}.error{@apply text-red-500 font-medium;}.no-questions{@apply text-center py-8;}.no-questions h2{@apply text-[#3498db] mb-4;}.no-questions a{@apply text-[#3498db] hover:text-[#2980b9] underline;}