*{margin:0;padding:0;box-sizing:border-box}:root{--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--education-gradient: linear-gradient(135deg, #00d4aa 0%, #118ab2 100%);--academic-gradient: linear-gradient(135deg, #ff6b6b 0%, #ffd166 100%);--learning-gradient: linear-gradient(135deg, #7209b7 0%, #3a86ff 100%);--knowledge-gradient: linear-gradient(135deg, #2ebf91 0%, #8360c3 100%);--glass-bg: rgba(255, 255, 255, .1);--glass-border: rgba(255, 255, 255, .2);--glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, .37);--success-color: #00d4aa;--warning-color: #ffd166;--accent-color: #ff6b6b;--info-color: #118ab2;--learning-color: #7209b7;--text-dark: #1a1a1a;--text-light: #6c757d;--white: #ffffff;--black: #000000;--card-bg: rgba(255, 255, 255, .95);--shadow: 0 20px 40px rgba(0, 0, 0, .1);--shadow-lg: 0 30px 60px rgba(0, 0, 0, .15);--shadow-xl: 0 50px 100px rgba(0, 0, 0, .2);--border-radius: 20px;--border-radius-lg: 30px;--border-radius-xl: 40px}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--learning-gradient);min-height:100vh;color:var(--text-dark);line-height:1.7;overflow-x:hidden}.glass{background:var(--glass-bg);-webkit-backdrop-filter:blur(25px);backdrop-filter:blur(25px);border:1px solid var(--glass-border);box-shadow:var(--glass-shadow);border-radius:var(--border-radius)}.app{min-height:100vh;display:flex;flex-direction:column;position:relative}.app:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at 10% 20%,rgba(0,212,170,.3) 0%,transparent 50%),radial-gradient(circle at 90% 80%,rgba(17,138,178,.3) 0%,transparent 50%),radial-gradient(circle at 50% 50%,rgba(114,9,183,.2) 0%,transparent 50%);pointer-events:none;z-index:-1}.header{background:#ffffff14;-webkit-backdrop-filter:blur(30px);backdrop-filter:blur(30px);border-bottom:1px solid rgba(255,255,255,.15);padding:1.2rem 0;position:sticky;top:0;z-index:1000;transition:all .3s ease}.header.scrolled{background:#ffffff1f;-webkit-backdrop-filter:blur(35px);backdrop-filter:blur(35px)}.header-content{max-width:1400px;margin:0 auto;padding:0 2rem;display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:1rem;color:var(--white);font-weight:800;font-size:1.6rem;text-shadow:0 2px 10px rgba(0,0,0,.3)}.logo-icon{font-size:2.2rem;background:linear-gradient(135deg,#fff,#f0f0f0);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3))}.main-content{flex:1;display:flex;align-items:center;justify-content:center;padding:4rem 2rem;position:relative}.hero-section{max-width:1400px;margin:0 auto;display:grid;grid-template-columns:1.2fr 1fr;gap:6rem;align-items:center}.hero-text h1{font-size:4rem;font-weight:900;background:linear-gradient(135deg,#fff,#ffffffe6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:1.5rem;line-height:1.1;letter-spacing:-.02em;text-shadow:0 4px 20px rgba(0,0,0,.2)}.hero-text p{font-size:1.4rem;color:#fffffff2;margin-bottom:3rem;font-weight:400;line-height:1.6}.education-features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2rem;margin-bottom:4rem}.education-feature-item{display:flex;align-items:flex-start;gap:1.2rem;padding:1.8rem;background:#ffffff14;border-radius:20px;border:1px solid rgba(255,255,255,.15);-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);transition:all .3s ease;position:relative;overflow:hidden}.education-feature-item:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left .6s}.education-feature-item:hover:before{left:100%}.education-feature-item:hover{background:#ffffff1f;transform:translateY(-8px) scale(1.02);box-shadow:0 20px 40px #00000040}.education-feature-icon{font-size:2rem;background:var(--education-gradient);padding:1.2rem;border-radius:18px;display:flex;align-items:center;justify-content:center;min-width:80px;height:80px;box-shadow:0 12px 25px #00d4aa66;flex-shrink:0}.education-feature-content h4{color:var(--white);font-size:1.3rem;font-weight:700;margin-bottom:.8rem;letter-spacing:-.01em}.education-feature-content p{color:#ffffffd9;font-size:1rem;line-height:1.6;margin:0;font-weight:400}.education-action-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(380px,1fr));gap:3rem;margin-top:4rem}.education-action-card{background:var(--card-bg);padding:3.5rem 3rem;border-radius:var(--border-radius-lg);text-align:center;-webkit-backdrop-filter:blur(25px);backdrop-filter:blur(25px);border:1px solid rgba(255,255,255,.4);box-shadow:var(--shadow-xl);transition:all .4s cubic-bezier(.175,.885,.32,1.275);position:relative;overflow:hidden}.education-action-card:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .6s}.education-action-card:hover:before{left:100%}.education-action-card:hover{transform:translateY(-15px) scale(1.03);box-shadow:0 35px 70px #00000040}.education-card-icon{font-size:4.5rem;margin-bottom:2.5rem;padding:2.5rem;border-radius:30px;display:inline-flex;align-items:center;justify-content:center;background:var(--education-gradient);box-shadow:0 20px 40px #00d4aa80;transition:all .3s ease}.education-action-card:hover .education-card-icon{transform:scale(1.1) rotate(5deg);box-shadow:0 25px 50px #00d4aa99}.education-card-title{font-size:2rem;font-weight:800;color:var(--text-dark);margin-bottom:1.5rem;letter-spacing:-.02em;background:linear-gradient(135deg,var(--text-dark),var(--learning-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.education-card-description{color:var(--text-light);margin-bottom:3rem;font-size:1.2rem;line-height:1.7;font-weight:400}.btn{padding:1.3rem 3rem;border:none;border-radius:18px;font-size:1.2rem;font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:1rem;position:relative;overflow:hidden;letter-spacing:.5px;text-transform:uppercase;font-size:1.1rem}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);transition:left .6s}.btn:hover:before{left:100%}.btn-education{background:var(--education-gradient);color:var(--white);border:none;box-shadow:0 15px 35px #00d4aa80}.btn-education:hover{transform:translateY(-5px) scale(1.05);box-shadow:0 20px 45px #00d4aab3}.btn-academic{background:var(--academic-gradient);color:var(--white);border:none;box-shadow:0 15px 35px #ff6b6b80}.btn-academic:hover{transform:translateY(-5px) scale(1.05);box-shadow:0 20px 45px #ff6b6bb3}.btn-learning{background:var(--learning-gradient);color:var(--white);border:none;box-shadow:0 15px 35px #7209b780}.btn-learning:hover{transform:translateY(-5px) scale(1.05);box-shadow:0 20px 45px #7209b7b3}.btn-glass{background:#fff3;color:var(--white);border:2px solid rgba(255,255,255,.4);-webkit-backdrop-filter:blur(25px);backdrop-filter:blur(25px);box-shadow:0 12px 30px #00000026}.btn-glass:hover{background:#ffffff4d;border-color:#fff9;transform:translateY(-5px) scale(1.05);box-shadow:0 18px 40px #00000040}.hero-actions{display:flex;gap:1.8rem;flex-wrap:wrap;margin-top:3rem}.login-container{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000f2;display:flex;align-items:center;justify-content:center;z-index:2000;padding:2rem;-webkit-backdrop-filter:blur(35px);backdrop-filter:blur(35px)}.login-content{background:linear-gradient(135deg,#fffffffa,#fffffff2);border-radius:var(--border-radius-lg);padding:4rem;max-width:520px;width:100%;box-shadow:var(--shadow-xl);border:1px solid rgba(255,255,255,.5);position:relative}.login-content:before{content:"";position:absolute;top:-3px;left:-3px;right:-3px;bottom:-3px;background:var(--education-gradient);border-radius:var(--border-radius-lg);z-index:-1;opacity:.4;filter:blur(15px)}.back-button{background:#0000001a;border:1px solid rgba(0,0,0,.15);color:var(--text-light);cursor:pointer;font-size:1rem;font-weight:600;margin-bottom:2rem;display:flex;align-items:center;gap:.8rem;transition:all .3s ease;padding:1rem 1.5rem;border-radius:15px;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px)}.back-button:hover{background:#00000026;color:var(--text-dark);transform:translate(-8px);box-shadow:0 8px 20px #00000026}.login-header{text-align:center;margin-bottom:3rem}.login-logo{font-size:4.5rem;margin-bottom:2rem;background:var(--education-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;filter:drop-shadow(0 6px 12px rgba(0,0,0,.25))}.login-header h2{color:var(--text-dark);margin-bottom:1rem;font-size:2.2rem;font-weight:800;letter-spacing:-.02em}.login-header p{color:var(--text-light);font-size:1.2rem;font-weight:400;line-height:1.6}.form-group{margin-bottom:2.5rem}.form-group label{display:block;margin-bottom:1rem;font-weight:700;color:var(--text-dark);font-size:1.1rem;letter-spacing:.5px}.form-group input{width:100%;padding:1.4rem 1.8rem;border:2px solid #e8e8e8;border-radius:18px;font-size:1.1rem;transition:all .3s ease;background:#fffffff2;font-weight:500;box-shadow:0 5px 15px #00000014}.form-group input:focus{outline:none;border-color:var(--info-color);background:var(--white);box-shadow:0 0 0 4px #118ab226;transform:translateY(-3px)}.input-help{font-size:.95rem;color:var(--text-light);margin-top:.8rem;font-weight:400}.login-submit-btn{width:100%;padding:1.5rem 2rem;background:var(--education-gradient);color:#fff;border:none;border-radius:18px;font-size:1.2rem;font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;align-items:center;justify-content:center;gap:1rem;letter-spacing:.5px;box-shadow:0 15px 35px #00d4aa80;position:relative;overflow:hidden}.login-submit-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);transition:left .6s}.login-submit-btn:hover:before{left:100%}.login-submit-btn:hover{transform:translateY(-5px) scale(1.02);box-shadow:0 20px 45px #00d4aab3}.login-submit-btn:disabled{background:#9ca3af;transform:none;box-shadow:none;cursor:not-allowed}.spinner-small{display:inline-block;width:20px;height:20px;border:3px solid transparent;border-top:3px solid white;border-radius:50%;animation:spin 1s linear infinite}.verification-pending{text-align:center;padding:3rem 2rem}.notification-sent{color:var(--success-color);font-weight:700;margin-bottom:1.5rem;font-size:1.2rem}.challenge-id{font-size:1rem;color:var(--text-light);font-family:Monaco,Consolas,monospace;margin-bottom:1.5rem;background:#00000014;padding:1rem 1.5rem;border-radius:12px;display:inline-block;border:1px solid rgba(0,0,0,.1)}.timeout-notice{font-size:1rem;color:var(--text-light);font-weight:500}.error-message{background:linear-gradient(135deg,#ef476f26,#ef476f14);color:var(--accent-color);padding:1.5rem 2rem;border-radius:18px;margin-bottom:2rem;border:1px solid rgba(239,71,111,.25);font-weight:600;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);box-shadow:0 8px 25px #ef476f26}.warning-message{background:linear-gradient(135deg,#ffd16626,#ffd16614);color:#e6a700;padding:1.5rem 2rem;border-radius:18px;margin-bottom:2rem;border:1px solid rgba(255,209,102,.25);font-weight:600;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);box-shadow:0 8px 25px #ffd16626}.success-message{background:linear-gradient(135deg,#00d4aa26,#00d4aa14);color:var(--success-color);padding:1.5rem 2rem;border-radius:18px;margin-bottom:2rem;border:1px solid rgba(0,212,170,.25);font-weight:600;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);box-shadow:0 8px 25px #00d4aa26}.mobile-app-info{color:var(--text-light);font-size:1rem;text-align:center;margin-top:2.5rem;font-weight:500}.mobile-app-info a{color:var(--info-color);text-decoration:none;font-weight:600;transition:all .3s ease}.mobile-app-info a:hover{color:var(--success-color);text-decoration:underline}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-25px)}}@keyframes pulse{0%,to{box-shadow:0 0 25px #00d4aa80}50%{box-shadow:0 0 45px #00d4aacc}}@keyframes glow{0%,to{box-shadow:0 0 25px #00d4aa80}50%{box-shadow:0 0 45px #00d4aacc}}.floating{animation:float 6s ease-in-out infinite}.glow{animation:glow 3s ease-in-out infinite}.hidden{display:none}.text-center{text-align:center}.mb-3{margin-bottom:3rem}.mt-3{margin-top:3rem}@media (max-width: 1200px){.hero-section{gap:4rem}.hero-text h1{font-size:3.5rem}}@media (max-width: 968px){.hero-section{grid-template-columns:1fr;gap:4rem;text-align:center}.hero-text h1{font-size:3rem}.education-features-grid{grid-template-columns:1fr;gap:1.8rem}.education-action-grid{grid-template-columns:1fr;gap:2.5rem}}@media (max-width: 768px){.header-content{padding:0 1.5rem;flex-direction:column;gap:1.5rem}.hero-text h1{font-size:2.5rem}.hero-text p{font-size:1.2rem}.hero-actions{justify-content:center}.btn{padding:1.2rem 2.5rem;font-size:1.1rem}.education-action-card,.login-content{padding:3rem 2rem}}@media (max-width: 480px){.main-content{padding:2rem 1rem}.hero-text h1{font-size:2.2rem}.education-feature-item{padding:1.5rem;flex-direction:column;text-align:center}.education-feature-icon{min-width:70px;height:70px;font-size:1.8rem}.education-action-card{padding:2.5rem 1.8rem}.education-card-icon{font-size:4rem;padding:2rem}}