*{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,.7);--glass-border:rgba(255,255,255,.2);--shadow:0 8px 32px rgba(30,64,175,.1);--transition:all .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:.5rem}.logo 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h3{color:var(--white);margin-bottom:1.5rem;font-size:1.3rem}.footer-links{list-style:none}.footer-links li{margin-bottom:.8rem}.footer-links a{color:rgba(255,255,255,.8);text-decoration:none;transition:var(--transition)}.footer-links a:hover{color:#fff;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,.1);color:var(--white);transition:var(--transition)}.social-links a:hover{background:#fff;color:var(--primary-blue);transform:translateY(-3px)}.copyright{text-align:center;padding-top:2rem;border-top:1px solid rgba(255,255,255,.1);color:rgba(255,255,255,.7);font-size:.9rem}.copyright a{color:rgba(255,255,255,.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:#fff}.typewriter{white-space:normal}.typewriter-container{margin:.25rem 0;display:block}.navbar.navbar-menu-active{background:#fff}.nav-links{display:none;position:absolute;top:100%;left:0;width:100%;background:#fff;flex-direction:column;padding:1rem;border-bottom:1px solid #e2e8f0;z-index:1000;box-shadow:0 10px 20px rgba(0,0,0,.1)}.nav-links.active{display:flex}.menu-toggle{display:block}.nav-links a{padding:1rem;margin:.25rem 0;border-radius:8px;text-align:center}.nav-links a:hover{background:rgba(30,64,175,.1)}.hero h1{font-size:2.2rem}.hero p{font-size:1rem}.section-title{font-size:2rem}section{padding:4rem 5%}.cards-container,.dashboard-stats,.test-grid,.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}.audio-lesson-container,.glass-card,.stat-card,.test-card{padding:1.5rem}.sign-image-large{width:120px;height:120px;font-size:3rem}.sign-name-large{font-size:1.5rem}}