:root{--mint-green: #7ED7C1;--mint-green-dark: #6BC4A8;--charcoal: #2C3E50;--charcoal-light: #34495E;--pale-gray: #F8F9FA;--white: #FFFFFF}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,sans-serif;line-height:1.6;background:linear-gradient(135deg,var(--mint-green) 0%,var(--mint-green-dark) 100%);color:var(--charcoal);min-height:100vh}a{text-decoration:none;color:inherit}.btn{display:inline-block;padding:.6rem 1.4rem;border-radius:25px;border:none;font-weight:600;cursor:pointer;background:var(--charcoal);color:var(--pale-gray);box-shadow:0 2px 6px #00000026;transition:background .3s ease,transform .3s ease}.btn:hover{background:var(--charcoal-light);transform:translateY(-2px)}.btn-secondary{background:transparent;border:2px solid var(--charcoal);color:var(--charcoal)}.btn-secondary:hover{background:var(--charcoal);color:var(--white)}.navbar{position:sticky;top:0;width:100%;background:rgba(255,255,255,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;z-index:1000;box-shadow:0 2px 8px #0000000d}.navbar .logo{font-size:1.8rem;font-weight:700;color:var(--mint-green-dark)}.navbar .nav-links{display:flex;gap:1rem;align-items:center}.navbar .nav-links a:not(.btn){font-weight:500;color:var(--charcoal);transition:color .3s ease}.navbar .nav-links a:hover{color:var(--mint-green)}.navbar .btn{margin-left:.5rem}.hero-section{text-align:center;color:var(--white);padding:6rem 1rem 4rem;background:linear-gradient(135deg,var(--mint-green),var(--mint-green-dark))}.hero-section h1{font-size:3rem;margin-bottom:1rem;font-weight:700;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.hero-section p{font-size:1.25rem;max-width:800px;margin:0 auto 2rem;opacity:.9}.hero-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.features-section{background:var(--pale-gray);padding:4rem 1rem}.features-section h2{text-align:center;font-size:2.5rem;margin-bottom:2rem;color:var(--charcoal)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:2rem}.feature-card{background:var(--white);padding:2rem;border-radius:15px;box-shadow:0 4px 12px #0000000d;text-align:center;transition:transform .3s ease}.feature-card:hover{transform:translateY(-5px);box-shadow:0 10px 20px #00000014}.feature-icon{font-size:3rem;margin-bottom:1rem;color:var(--mint-green)}.feature-card h3{font-size:1.5rem;margin-bottom:.75rem;color:var(--charcoal)}.feature-card p{color:#6c757d;line-height:1.6}.subsection-title{font-size:1.8rem;margin-top:2rem;margin-bottom:.1rem;text-align:center;color:var(--charcoal)}.download-section{background:var(--white);padding:4rem 1rem;text-align:center}.download-section h2{font-size:2.5rem;margin-bottom:1rem;color:var(--charcoal)}.download-section p{font-size:1.1rem;margin-bottom:2rem;color:#6c757d}.download-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.download-buttons .btn.disabled{opacity:.5;cursor:not-allowed}.legal-links{margin-top:2rem;color:#666;font-size:.9rem}.legal-links a{color:var(--mint-green)}.legal-links a:hover{text-decoration:underline}.auth-container,.account-container{max-width:420px;margin:4rem auto;background:var(--white);padding:2rem;border-radius:15px;box-shadow:0 4px 12px #0000000d}.auth-container h2,.account-container h2{margin-bottom:1rem;color:var(--charcoal);text-align:center}.auth-container form,.account-container{display:flex;flex-direction:column;gap:1rem}.auth-container input{padding:.6rem;border:1px solid #ccc;border-radius:10px;font-size:1rem}.auth-container .error{color:#e74c3c;font-size:.9rem;text-align:center}.google-btn{display:flex;align-items:center;justify-content:center;gap:.75rem;background-color:#fff;border:1px solid #ddd;border-radius:999px;padding:.75rem 1rem;font-weight:600;font-size:1rem;color:#555;box-shadow:0 2px 6px #0000001a;transition:all .2s ease;width:100%;margin-top:1rem;cursor:pointer}.google-btn:hover{background-color:#f7f7f7;box-shadow:0 4px 10px #00000026;transform:translateY(-2px)}.google-icon{width:20px;height:20px}.footer{background:var(--charcoal);color:var(--white);padding:3rem 1rem 1rem}.footer .footer-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;margin-bottom:1rem}.footer h3,.footer h4{margin-bottom:.5rem;color:var(--mint-green)}.footer a{color:#ccc;transition:color .3s ease}.footer a:hover{color:var(--mint-green)}.footer-bottom{border-top:1px solid #555;padding-top:1rem;text-align:center;color:#aaa}