.auth-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.auth-card{background:white;border-radius:12px;box-shadow:0 10px 25px rgba(0,0,0,.1);padding:40px;width:100%;max-width:400px;animation:slideUp .3s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.auth-card h2{text-align:center;color:#333;margin-bottom:30px;font-size:28px;font-weight:600}.auth-form{gap:20px}.auth-form,.form-group{display:flex;flex-direction:column}.form-group{gap:8px}.form-group label{font-weight:500;color:#555;font-size:14px}.form-group input{padding:12px 16px;border:2px solid #e1e5e9;border-radius:8px;font-size:16px;transition:border-color .3s ease;background:#f8f9fa}.form-group input:focus{outline:none;border-color:#667eea;background:white}.form-group input::placeholder{color:#999}.auth-button{background:linear-gradient(135deg,#667eea,#764ba2);color:white;border:none;padding:14px 24px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s ease;margin-top:10px}.auth-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 5px 15px rgba(102,126,234,.4)}.auth-button:disabled{opacity:.7;cursor:not-allowed;transform:none}.error-message{background:#fee;color:#c53030;padding:12px;border-radius:6px;font-size:14px;border-left:4px solid #c53030}.auth-switch{text-align:center;margin-top:25px;padding-top:20px;border-top:1px solid #e1e5e9}.auth-switch p{color:#666;font-size:14px;margin:0}.switch-button{background:none;border:none;color:#667eea;font-weight:600;cursor:pointer;text-decoration:underline;font-size:14px;transition:color .3s ease}.switch-button:hover{color:#764ba2}@media (max-width:480px){.auth-card{padding:30px 20px;margin:10px}.auth-card h2{font-size:24px}.form-group input{font-size:16px}}.container{max-width:1200px;margin:0 auto;padding:2rem;min-height:100vh;background:linear-gradient(135deg,#f5f7fa,#c3cfe2)}.header-section{text-align:center;margin-bottom:3rem;padding:2rem 0}.header-section h1{font-size:3rem;color:#2c3e50;margin-bottom:1rem;font-weight:700}.header-section p{font-size:1.2rem;color:#7f8c8d;margin-bottom:2rem}.user-section{background:white;padding:1.5rem;border-radius:12px;box-shadow:0 4px 6px rgba(0,0,0,.1);display:inline-block;margin:0 auto}.welcome-message{font-size:1.1rem;color:#2c3e50;margin-bottom:1rem;font-weight:500}.sign-out-button{background:#e74c3c;color:white;border:none;padding:.75rem 1.5rem;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.sign-out-button:hover{background:#c0392b;transform:translateY(-2px)}.auth-buttons{display:flex;gap:1rem;justify-content:center;margin-top:1rem}.auth-btn{padding:.75rem 2rem;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;text-decoration:none;display:inline-block}.signin-btn{background:#3498db;color:white}.signin-btn:hover{background:#2980b9;transform:translateY(-2px);box-shadow:0 4px 8px rgba(52,152,219,.3)}.signup-btn{background:#2ecc71;color:white}.signup-btn:hover{background:#27ae60;transform:translateY(-2px);box-shadow:0 4px 8px rgba(46,204,113,.3)}.feature-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));grid-gap:2rem;gap:2rem;margin-top:2rem}.feature-item{padding:2rem;background:white;border-radius:12px;box-shadow:0 4px 6px rgba(0,0,0,.1);border-left:4px solid #3498db;transition:all .3s ease;text-align:center}.feature-item:hover{transform:translateY(-4px);box-shadow:0 8px 25px rgba(0,0,0,.15);border-left-color:#2ecc71}.feature-item h3{color:#2c3e50;font-size:1.5rem;margin-bottom:1rem;font-weight:600}.feature-item p{color:#7f8c8d;font-size:1rem;line-height:1.6}@media (max-width:768px){.container{padding:1rem}.header-section h1{font-size:2.5rem}.auth-buttons{flex-direction:column;align-items:center}.auth-btn{width:200px}.feature-list{grid-template-columns:1fr;gap:1.5rem}}