* { box-sizing: border-box; font-family: 'Segoe UI', sans-serif; }
body { background-color: #f4f7f6; display: flex; justify-content: center; align-items: center; min-height: 100vh; margin: 0; }
.auth-container { background: white; padding: 2rem; border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.1); width: 100%; max-width: 400px; margin: 20px; }
h2 { color: #2c3e50; text-align: center; margin-bottom: 1.5rem; }
.form-group { margin-bottom: 1rem; }
label { display: block; margin-bottom: 5px; color: #666; }
input { width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 8px; outline: none; }
input:focus { border-color: #3498db; }
.btn { width: 100%; padding: 12px; border: none; border-radius: 8px; background: #27ae60; color: white; font-size: 16px; cursor: pointer; transition: 0.3s; }
.btn:hover { background: #219150; }
.link { text-align: center; margin-top: 15px; font-size: 14px; }
.link a { color: #3498db; text-decoration: none; }
/* Mobile Responsive */
@media (max-width: 480px) {
    .auth-container { padding: 1.5rem; margin: 10px; }
}