/* Zero-Tracking Custom Clean CSS */
* { box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { background-color: #f4f6f9; color: #333; margin: 0; padding: 20px; }
.container { max-width: 600px; margin: 30px auto; background: #fff; padding: 30px; border-radius: 12px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); }
h2 { margin-top: 0; color: #1a202c; border-bottom: 2px solid #edf2f7; padding-bottom: 12px; }
.form-group { margin-bottom: 20px; }
label { display: block; font-weight: 600; margin-bottom: 8px; color: #4a5568; }
input[type="text"], input[type="email"], select { width: 100%; padding: 12px; border: 1px solid #cbd5e0; border-radius: 6px; font-size: 15px; outline: none; }
input:focus, select:focus { border-color: #3182ce; box-shadow: 0 0 0 3px rgba(49,130,206,0.2); }
.price-box { background: #ebf8ff; border: 1px solid #bee3f8; color: #2b6cb0; padding: 15px; border-radius: 6px; font-size: 18px; font-weight: bold; text-align: center; margin-bottom: 20px; }
.btn-submit { width: 100%; background: #3182ce; color: #fff; border: none; padding: 14px; border-radius: 6px; font-size: 16px; font-weight: 600; cursor: pointer; transition: 0.2s; }
.btn-submit:hover { background: #2b6cb0; }
.alert { padding: 12px 15px; border-radius: 6px; margin-bottom: 20px; display: none; }
.alert-success { background: #c6f6d5; color: #22543d; border: 1px solid #9ae6b4; }
.alert-error { background: #fed7d7; color: #742a2a; border: 1px solid #feb2b2; }