.container_12 {
    display: flex;
    justify-content: center;
    padding: 0 10px;
}

.create-post-box {
    background-color: #2e2e2e;
    padding: 30px;
    border-radius: 10px;
    width: calc(100% - 1px);
    max-width: 1170px;
    box-sizing: border-box;
    margin-left: -10px;
}

.create-post-box h2 {
    margin-bottom: 20px;
    font-size: 28px;
    color: #ffffff;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.form-group label[for="title"] {
    font-size: 20px;
    font-family: 'Roboto', sans-serif;
    color: #ffffff;
    font-weight: bold;
    margin-bottom: 8px;
}

.form-group label:not([for="title"]) {
    margin-bottom: 8px;
    font-weight: bold;
    color: #ffffff;
}

.form-group input[type="text"],
.form-group textarea,
.form-group input[type="file"] {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #cccccc;
    background-color: #1e1e1e;
    color: #ffffff;
    font-size: 16px;
    font-family: 'Roboto', sans-serif;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

.form-group input[type="text"]:focus,
.form-group textarea:focus,
.form-group input[type="file"]:focus {
    border-color: #00BBFF;
    outline: none;
}

.form-group input[type="text"]::placeholder {
    color: #888888;
}

.preview {
    margin-top: 10px;
    text-align: center;
}

.preview img {
    max-width: 100%;
    border-radius: 5px;
    margin-top: 10px;
}

.submit-button {
    background-color: #1e1e1e;
    color: #00BBFF;
    border: 2px solid #00BBFF;
    padding: 15px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 18px;
    font-weight: bold;
    text-transform: uppercase;
    width: 100%;
    box-shadow: 0px 0px 15px rgba(0, 187, 255, 0.75);
    transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
    position: relative;
    overflow: hidden;
}

.submit-button:hover {
    background-color: #00BBFF;
    color: #ffffff;
    box-shadow: 0px 0px 20px rgba(0, 187, 255, 0.75), 0 0 30px rgba(0, 187, 255, 0.5);
    transform: translateY(-2px) scale(1.02);
}

.submit-button::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 187, 255, 0.5), transparent);
    transform: scale(0);
    transition: transform 0.5s ease;
}

.submit-button:hover::after {
    transform: scale(1);
}

.submit-button:active {
    background-color: #0088cc;
    box-shadow: 0px 0px 10px rgba(0, 136, 204, 0.75);
    transform: translateY(0) scale(1);
}

.form-group input[type="text"]::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
    font-style: normal;
}

.form-group textarea {
    resize: none;
}

.char-counter {
    text-align: right;
    font-size: 14px;
    color: #888888;
    margin-top: 5px;
    font-family: 'Roboto', sans-serif;
}