body {
    font-family: 'Open Sans';
}
.container {
    max-width: 800px;
    margin: 0 auto;
}
.logo {
    width: 100%;
    display: flex;
    margin-bottom: 20px;
    text-decoration: none;
    color: #000;
    justify-content: space-between;
}
.logo img {
    max-width: 40%;
}
.logo h1 {
    margin: 0;
    max-width: 60%;
}
.tech-type-selector {
    display: flex;
    margin-bottom: 20px;
    justify-content: space-between;
}
.col-container div {
 width: 49%;
}
.checkbox-container {
    display: flex;
    align-items: center;
}
.checkbox-container .checkbox-item {
    margin-right: 10px;
}
.checkbox-item input {
    margin-bottom: 5px; 
}
.tech-type-btn {
    width: 49%;
    padding: 10px 20px;
    transition: color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
    background: #fff;
    color: #0097D4;
    cursor: pointer;
    font-size: 16px;
    border: none;
    font-weight: 600;
    text-transform: uppercase;
}
.tech-type-btn {
    border-radius: 5px;
    border:1px solid #0097D4;
}
.tech-type-btn.active {
    transition: color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
    background-image: linear-gradient(-135deg, #01AEF3 0%, #0097D4 100%);
    color: white;
}
.tech-type-btn:hover:not(.active) {
    background-image: linear-gradient(-135deg, #01AEF3 0%, #0097D4 100%);
    color: white;
}

.message {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 5px;
    display: none;
}
.success-message {
    background-color: #dff0d8;
    color: #3c763d;
    border: 1px solid #d6e9c6;
}
.error-message {
    background-color: #f2dede;
    color: #a94442;
    border: 1px solid #ebccd1;
}

.form-section {
    margin-bottom: 20px;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #f9f9f9;
}
.hidden {
    display: none;
}
label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #333;
}
input, select, textarea {
    margin-bottom: 15px;
    padding: 8px;
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #ddd;
    border-radius: 4px;
}
input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
}
.checkbox-group {
    margin-bottom: 15px;
}
.checkbox-item {
    margin-bottom: 5px;
    display: flex;
    align-items: center;
}
.error {
    color: #e74c3c;
    font-size: 0.9em;
    margin-top: -10px;
    margin-bottom: 10px;
}
button[type="submit"] {
    padding: 10px 20px;
    background-image: linear-gradient(-135deg, #01AEF3 0%, #0097D4 100%);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}
button[type="submit"]:hover {
    background-image: linear-gradient(-135deg, #01AEF3 0%, #0097D4 100%);
}
.col-container {
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.photo-upload-container {
    width: 49%;
    margin-bottom: 15px;
}
.photo-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}
.photo-thumbnail {
    position: relative;
    width: 100px;
    height: 100px;
    border: 1px solid #ddd;
    border-radius: 4px;
    overflow: hidden;
}
.photo-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.remove-photo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 36px;
    cursor: pointer;
}

@media (max-width:768px) {
    .logo {
        flex-direction: column-reverse;
        justify-content: center;
        align-items: center;
        margin-bottom: 10px;
    }
    .logo img {
       width: 200px;
       max-width: 100%;
    }
    .logo h1 {
        font-size: 24px;
        width: 100%;
        max-width: 100%;
        text-align: center;
    }
    label {
        font-size: 14px;
    }
    .tech-type-btn {
        font-size: 14px;
        padding: 7px;
    }
    .tech-type-selector {
        margin-bottom: 10px;
    }
    .photo-upload-container {
        margin-bottom: 0;
    }
    input, select, textarea {
        margin-bottom: 5px;
        text-align: center;
    }
    .form-section {
        text-align: center;
    }
    form {
        text-align: center;
    }
    .col-container {
        align-items: end;
    }
    .col-container .photo-preview {
        width: 100%;
    }
    .col-container .photo-thumbnail {
        width: 45%;
        height: auto;
    }
    .remove-photo { 
        width: 35px;
        height: 35px;
        font-size: 30px;
    }
    .col-container .error {
        width: 100%;
    }
}
@media (max-width:450px) {
    .logo img {
        width: 150px;
     }
    .logo h1 {
        font-size: 20px;
    }
    label {
        font-size: 12px;
    }
    .col-container .error {
        width: 100%;
        margin-top: 10px;
        font-size: 12px;
    }
}