* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
    font-size: 20px;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e0e0e0;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-size: 14px;
    font-weight: 500;
}

.required {
    color: #ff0000;
}

input[type="text"],
input[type="tel"],
input[type="date"],
select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    background-color: #fff;
    transition: border-color 0.3s;
}

input[type="text"]:focus,
input[type="tel"]:focus,
input[type="date"]:focus,
select:focus {
    outline: none;
    border-color: #4CAF50;
}

input::placeholder {
    color: #999;
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

.file-upload {
    position: relative;
}

input[type="file"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    background-color: #fff;
}

input[type="file"]::-webkit-file-upload-button {
    padding: 8px 16px;
    border: none;
    background-color: #f0f0f0;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 10px;
}

input[type="file"]::-webkit-file-upload-button:hover {
    background-color: #e0e0e0;
}

.file-name {
    display: block;
    margin-top: 5px;
    font-size: 12px;
    color: #666;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background-color: #4e5eff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 10px;
}

.submit-btn:hover {
    background-color: #3d4ecc;
}

.submit-btn:active {
    transform: scale(0.98);
}

.loading {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.loading.show {
    display: flex;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #4e5eff;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading p {
    color: #fff;
    font-size: 16px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 20px;
    }

    h1 {
        font-size: 18px;
    }

    input[type="text"],
    input[type="tel"],
    input[type="date"],
    select {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }

    h1 {
        font-size: 16px;
        margin-bottom: 20px;
    }

    .submit-btn {
        font-size: 15px;
    }
}