* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.container {
    max-width: 600px;
    margin: 50px auto;
    padding: 25px 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.container h2 {
    text-align: center;
    margin-bottom: 25px;
    font-size: 24px;
    color: #007bff;
}

form {
    display: flex;
    flex-direction: column;
}

form label {
    margin-bottom: 5px;
    font-weight: bold;
    color: #333;
    margin-top: 15px;
}

form input[type="text"],
form input[type="number"],
form input[type="file"],
form textarea {
    padding: 10px 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 14px;
    width: 100%;
    transition: 0.2s;
}

form input:focus,
form textarea:focus {
    outline: none;
    border-color: #007bff;
}

form textarea {
    min-height: 80px;
    resize: vertical;
}

.btn-submit {
    margin-top: 25px;
    padding: 12px;
    background: #007bff;
    color: #fff;
    font-weight: bold;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 16px;
    transition: 0.3s;
}

.btn-submit:hover {
    background: #0056b3;
}

.btn-back {
    display: inline-block;
    margin-top: 20px;
    color: #ff6b35;
    font-weight: bold;
    text-decoration: none;
    transition: 0.2s;
}

.btn-back:hover {
    text-decoration: underline;
}

@media (max-width: 650px) {
    .container {
        margin: 20px;
        padding: 20px;
    }
    .btn-submit {
        font-size: 14px;
    }
}