.auth-container { max-width: 450px; margin: 60px auto; background: #fff; padding: 40px; border-radius: 8px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
.auth-title { text-align: center; color: #2c3e50; margin-bottom: 30px; font-size: 1.8rem; border-bottom: 2px solid #3498db; padding-bottom: 10px; display: inline-block; width: 100%;}
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: bold; color: #555; }
.form-control { width: 100%; padding: 12px; border: 1px solid #ccc; border-radius: 4px; font-size: 1.1rem; box-sizing: border-box; }
.btn-submit { width: 100%; padding: 12px; background: #3498db; color: #fff; border: none; border-radius: 4px; font-size: 1.2rem; font-weight: bold; cursor: pointer; transition: 0.3s; }
.btn-submit:hover { background: #2980b9; }
.auth-links { text-align: center; margin-top: 20px; border-top: 1px solid #eee; padding-top: 20px;}
.auth-links a { color: #e74c3c; text-decoration: none; font-weight: bold; }
.auth-links a:hover { text-decoration: underline; }
.error-box { background: #f8d7da; color: #c0392b; padding: 10px; border-radius: 4px; margin-bottom: 20px; text-align: center; font-weight: bold; }