*{margin:0;padding:0;box-sizing:border-box}:root{--primary-blue:#1e40af;--light-blue:#3b82f6;--dark-blue:#1e3a8a;--accent-blue:#60a5fa;--white:#ffffff;--light-gray:#f8fafc;--gray:#64748b;--dark-gray:#334155;--glass-bg:rgba(255,255,255,0.7);--glass-border:rgba(255,255,255,0.2);--shadow:0 8px 32px rgba(30,64,175,0.1);--transition:all 0.3s ease}body{font-family:'Inter',sans-serif;background:linear-gradient(135deg,#f0f9ff 0%,#e0f2fe 100%);color:var(--dark-gray);line-height:1.6;min-height:100vh;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:'Poppins',sans-serif;font-weight:600;line-height:1.3}.navbar{position:fixed;top:0;width:100%;background:var(--glass-bg);backdrop-filter:blur(10px);padding:1rem 5%;display:flex;justify-content:space-between;align-items:center;z-index:1000;border-bottom:1px solid var(--glass-border);box-shadow:var(--shadow)}.logo{font-size:1.5rem;font-weight:700;color:var(--primary-blue);text-decoration:none;display:flex;align-items:center;gap:0.5rem}.logo i{color:var(--light-blue)}.nav-links{display:flex;gap:1.5rem}.nav-links a{color:var(--dark-gray);text-decoration:none;font-weight:500;font-size:1rem;transition:var(--transition);padding:0.5rem 1rem;border-radius:6px}.nav-links a:hover{color:var(--primary-blue);background:rgba(30,64,175,0.1)}.menu-toggle{display:none;background:none;border:none;font-size:1.5rem;color:var(--primary-blue);cursor:pointer}.hero{height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:0 2rem;position:relative}.hero h1{font-size:3rem;margin-bottom:1.5rem;color:var(--dark-blue);line-height:1.2}.typewriter-container{display:inline-block}.typewriter{display:inline-block;overflow:hidden;border-right:3px solid var(--primary-blue);white-space:nowrap;animation:typing 4s steps(40,end),blink-caret 0.75s step-end infinite}@keyframes typing{from{width:0}to{width:100%}}@keyframes blink-caret{from,to{border-color:transparent}50%{border-color:var(--primary-blue)}}.hero p{font-size:1.1rem;max-width:600px;margin-bottom:2rem;color:var(--gray);line-height:1.6}.cta-button{background:linear-gradient(135deg,var(--primary-blue) 0%,var(--light-blue) 100%);color:var(--white);padding:1rem 2.5rem;font-size:1.1rem;font-weight:600;border:none;border-radius:8px;cursor:pointer;transition:var(--transition);text-transform:uppercase;letter-spacing:1px;box-shadow:0 4px 15px rgba(30,64,175,0.3)}.cta-button:hover{transform:translateY(-3px);box-shadow:0 8px 25px rgba(30,64,175,0.4)}.cta-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}section{padding:6rem 5%;min-height:100vh;display:flex;flex-direction:column;justify-content:center}.section-title{font-size:2.5rem;text-align:center;margin-bottom:3rem;color:var(--dark-blue)}.cards-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin-top:2rem}.glass-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;padding:2rem;backdrop-filter:blur(10px);transition:var(--transition);box-shadow:var(--shadow);cursor:pointer;text-align:center}.glass-card:hover{transform:translateY(-10px);box-shadow:0 20px 40px rgba(30,64,175,0.2);border-color:var(--accent-blue)}.card-icon{font-size:2.5rem;color:var(--primary-blue);margin-bottom:1rem}.card-title{font-size:1.5rem;margin-bottom:1rem;color:var(--dark-blue)}.card-content{color:var(--gray);line-height:1.6;margin-bottom:1.5rem}.card-link{color:var(--primary-blue);text-decoration:none;font-weight:500;display:inline-flex;align-items:center;gap:0.5rem;transition:var(--transition)}.card-link:hover{gap:1rem;color:var(--light-blue)}.audio-lesson-container{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;padding:2rem;backdrop-filter:blur(10px);box-shadow:var(--shadow);max-width:900px;margin:0 auto}.sign-content{display:flex;flex-direction:column;align-items:center;text-align:center;margin-bottom:2rem}.sign-image-large{width:180px;height:180px;border-radius:5px;display:flex;align-items:center;justify-content:center;margin:0 auto 0.5rem;color:white;font-size:5rem}.sign-name-large{font-size:2rem;color:var(--dark-blue);margin-bottom:1rem}.sign-description-large{color:var(--gray);font-size:1.1rem;line-height:1.6;max-width:600px;margin:0 auto}.audio-player-full{background:rgba(30,64,175,0.1);border-radius:12px;padding:1.5rem;margin-top:2rem}.player-controls-full{display:flex;align-items:center;gap:1.5rem;justify-content:center;margin-bottom:1rem;flex-wrap:wrap}.control-btn-full{background:linear-gradient(135deg,var(--primary-blue) 0%,var(--light-blue) 100%);color:var(--white);border:none;width:50px;height:50px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;transition:var(--transition);box-shadow:0 4px 10px rgba(30,64,175,0.3)}.control-btn-full:hover{transform:scale(1.1)}.progress-container-full{flex:1;background:rgba(255,255,255,0.3);height:8px;border-radius:4px;cursor:pointer;position:relative;min-width:200px}.progress-bar-full{background:linear-gradient(90deg,var(--primary-blue) 0%,var(--light-blue) 100%);height:100%;border-radius:4px;width:0%}.time-display-full{display:flex;justify-content:space-between;font-size:0.9rem;color:var(--gray);width:100%}.current-sign{text-align:center;color:var(--dark-blue);font-weight:500;margin-top:1rem}.test-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin-top:2rem}.test-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;padding:2rem;backdrop-filter:blur(10px);box-shadow:var(--shadow);text-align:center;transition:var(--transition)}.test-card:hover{transform:translateY(-5px);box-shadow:0 15px 30px rgba(30,64,175,0.2);border-color:var(--accent-blue)}.test-icon{font-size:3rem;color:var(--primary-blue);margin-bottom:1rem}.test-title{font-size:1.5rem;margin-bottom:1rem;color:var(--dark-blue)}.test-meta{color:var(--gray);margin-bottom:1.5rem;line-height:1.6}.start-test{background:linear-gradient(135deg,var(--primary-blue) 0%,var(--light-blue) 100%);color:var(--white);padding:0.8rem 1.5rem;border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:var(--transition);box-shadow:0 4px 15px rgba(30,64,175,0.3);width:100%;margin-bottom:0.8rem}.start-test:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(30,64,175,0.4)}.review-tests{background:rgba(30,64,175,0.1);color:var(--primary-blue);padding:0.8rem 1.5rem;border:1px solid var(--glass-border);border-radius:8px;font-weight:600;cursor:pointer;transition:var(--transition);width:100%;margin-bottom:0.8rem}.review-tests:hover{background:rgba(30,64,175,0.2)}.unlimited-highlight{background:linear-gradient(135deg,#10b981 0%,#34d399 100%);color:white;padding:0.5rem 1rem;border-radius:20px;font-size:0.9rem;font-weight:600;display:inline-block;margin-top:1rem}.dashboard-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:2rem;margin-bottom:3rem}.stat-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;padding:2rem;text-align:center;backdrop-filter:blur(10px);box-shadow:var(--shadow);transition:var(--transition)}.stat-card:hover{transform:translateY(-5px);box-shadow:0 15px 30px rgba(30,64,175,0.2)}.stat-value{font-size:2.5rem;color:var(--primary-blue);font-weight:700;margin:1rem 0}.stat-label{color:var(--gray);font-size:1.1rem;font-weight:500}.test-history{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;padding:2rem;backdrop-filter:blur(10px);box-shadow:var(--shadow);margin-top:2rem}.test-history h3{color:var(--dark-blue);margin-bottom:1.5rem;text-align:center}.test-results{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}.test-result-card{background:rgba(30,64,175,0.05);border-radius:12px;padding:1.5rem;border-left:4px solid var(--primary-blue)}.test-date{font-weight:600;color:var(--dark-blue);margin-bottom:0.5rem}.test-score{font-size:1.5rem;font-weight:700;color:var(--primary-blue);margin-bottom:0.5rem}.test-details{color:var(--gray);font-size:0.9rem}.pass-rate{text-align:center;margin-top:2rem;padding:1.5rem;background:rgba(16,185,129,0.1);border-radius:12px}.pass-rate-value{font-size:2rem;font-weight:700;color:#10b981}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;margin-bottom:3rem}.footer-section h3{color:var(--white);margin-bottom:1.5rem;font-size:1.3rem}.footer-links{list-style:none}.footer-links li{margin-bottom:0.8rem}.footer-links a{color:rgba(255,255,255,0.8);text-decoration:none;transition:var(--transition)}.footer-links a:hover{color:var(--white);padding-left:5px}.social-links{display:flex;gap:1rem;margin-top:1rem}.social-links a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.1);color:var(--white);transition:var(--transition)}.social-links a:hover{background:var(--white);color:var(--primary-blue);transform:translateY(-3px)}.copyright{text-align:center;padding-top:2rem;border-top:1px solid rgba(255,255,255,0.1);color:rgba(255,255,255,0.7);font-size:0.9rem}.copyright a{color:rgba(255,255,255,0.9);text-decoration:none}.copyright a:hover{text-decoration:underline}@media (max-width:992px){.hero h1{font-size:2.5rem}.section-title{font-size:2.2rem}}@media (max-width:768px){.navbar{background:white}.typewriter{white-space:normal}.typewriter-container{margin:0.25rem 0;display:block}.navbar.navbar-menu-active{background:white}.nav-links{display:none;position:absolute;top:100%;left:0;width:100%;background:white;flex-direction:column;padding:1rem;border-bottom:1px solid #e2e8f0;z-index:1000;box-shadow:0 10px 20px rgba(0,0,0,0.1)}.nav-links.active{display:flex}.menu-toggle{display:block}.nav-links a{padding:1rem;margin:0.25rem 0;border-radius:8px;text-align:center}.nav-links a:hover{background:rgba(30,64,175,0.1)}.hero h1{font-size:2.2rem}.hero p{font-size:1rem}.section-title{font-size:2rem}section{padding:4rem 5%}.cards-container,.test-grid,.dashboard-stats,.test-results{grid-template-columns:1fr}.player-controls-full{flex-direction:column}.progress-container-full{width:100%;order:-1;margin-bottom:1rem}.sign-image-large{width:140px;height:140px;font-size:4rem}}@media (max-width:480px){.hero h1{font-size:1.8rem}.section-title{font-size:1.8rem}.glass-card,.test-card,.stat-card,.audio-lesson-container{padding:1.5rem}.sign-image-large{width:120px;height:120px;font-size:3rem}.sign-name-large{font-size:1.5rem}}