.sfm-app-card{background:#fff;border:1px solid #dbe1e8;border-radius:10px;padding:28px;max-width:640px;margin:20px auto;box-shadow:0 1px 3px rgba(0,0,0,.05);font-family:-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:#1f2937;}
.sfm-app-title{font-size:20px;margin:0 0 10px;}
.sfm-app-desc{font-size:14px;color:#4b5563;margin-bottom:16px;}
.sfm-app-error{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca;padding:10px 14px;border-radius:6px;font-size:14px;margin-bottom:14px;}
.sfm-app-success{background:#f0fdf4;color:#166534;border:1px solid #bbf7d0;}
.sfm-field{margin-bottom:16px;}
.sfm-field label{display:block;font-weight:600;font-size:14px;margin-bottom:6px;}
.sfm-req{color:#b91c1c;}
.sfm-field input[type=text],.sfm-field input[type=email],.sfm-field input[type=tel],.sfm-field input[type=number],.sfm-field input[type=date],.sfm-field textarea,.sfm-field select,.sfm-field input[type=file]{width:100%;padding:10px 12px;border:1px solid #dbe1e8;border-radius:6px;font-size:14px;box-sizing:border-box;}
.sfm-field textarea{min-height:100px;}
.sfm-checkbox-inline{font-weight:400 !important;}
.sfm-note{font-size:12px;color:#6b7280;margin-top:4px;}
.sfm-app-btn{background:#1d4ed8;color:#fff;border:none;padding:12px 24px;border-radius:6px;font-size:15px;font-weight:600;cursor:pointer;}
.sfm-app-btn:hover{background:#1e40af;}

@media (max-width: 640px) {
	.sfm-app-card{padding:18px;margin:12px auto;border-radius:8px;}
	.sfm-app-title{font-size:18px;}
	.sfm-app-btn{width:100%;padding:14px;}
	.sfm-field input[type=text],.sfm-field input[type=email],.sfm-field input[type=tel],.sfm-field input[type=number],.sfm-field input[type=date],.sfm-field textarea,.sfm-field select,.sfm-field input[type=file]{font-size:16px;}
}