static/css/custom.css

.card {
    border-radius: 1rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.card-header {
    border-top-left-radius: 1rem !important;
    border-top-right-radius: 1rem !important;
    background-color: var(--bs-dark);
}

#previewImage {
    max-height: 400px;
    width: auto;
    object-fit: contain;
}

.form-check {
    margin-bottom: 0.5rem;
}

.alert {
    margin-bottom: 0;
}

.btn-primary {
    padding: 0.5rem 1.5rem;
}

/* Custom upload button styling */
.upload-container {
    position: relative;
    width: 120px;
    height: 42px;
    margin: 0 auto;
}

.upload-container input[type="file"] {
    display: none;
}

.upload-app {
    display: block;
    position: relative;
    width: 120px;
    height: 42px;
    transition: 0.3s ease width;
    cursor: pointer;
}

.upload-btn {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: var(--bs-dark);
    border: 2px solid var(--bs-border-color);
    border-radius: 0.375rem;
    overflow: hidden;
}

.upload-btn:before {
    content: "Upload";
    position: absolute;
    top: 50%;
    left: 45%;
    transform: translate(-50%, -50%);
    color: var(--bs-body-color);
    font-size: 14px;
    font-weight: bold;
    transition: opacity 0.3s ease;
}

.file-selected .upload-btn:before {
    opacity: 0;
}

.upload-arrow {
    position: absolute;
    top: 0;
    right: 0;
    width: 38px;
    height: 38px;
    background-color: var(--bs-dark);
    transition: opacity 0.3s ease;
}

.file-selected .upload-arrow {
    opacity: 0;
}

.upload-arrow:before,
.upload-arrow:after {
    content: "";
    position: absolute;
    top: 18px;
    width: 10px;
    height: 2px;
    background-color: var(--bs-body-color);
}

.upload-arrow:before {
    right: 17px;
    transform: rotateZ(-45deg);
}

.upload-arrow:after {
    right: 11px;
    transform: rotateZ(45deg);
}

.upload-success {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    height: 24px;
    margin: 0;
    background-color: var(--bs-success);
    transform: translate(-50%, -50%) scale(0);
    border-radius: 50%;
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.upload-success i {
    font-size: 16px;
    color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.3s ease 0.1s;
}

.file-selected .upload-success {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

.file-selected .upload-success i {
    transform: translate(-50%, -50%) scale(1);
}