body {
    background: #f8f9fa;
}
.feature-card {
    border-radius: 18px;
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
}
.feature-card:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 8px 24px rgba(220,53,69,0.15);
    border: 1.5px solid #dc3545;
}
.card-title {
    font-weight: 600;
    color: #dc3545;
}
.navbar-brand {
    letter-spacing: 2px;
}
.tool-container {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 4px 24px rgba(220,53,69,0.08);
    margin-bottom: 2rem;
    min-height: 60vh;
}
.upload-box {
    border: 2px dashed #dc3545;
    border-radius: 14px;
    padding: 2.5rem 1.5rem;
    background: rgba(220,53,69,0.03);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}
.upload-box.dragover {
    border-color: #b71c1c;
    background: rgba(220,53,69,0.08);
}
.upload-label {
    width: 100%;
    cursor: pointer;
}
.file-preview.blurred {
    filter: blur(2px) grayscale(0.5);
    opacity: 0.7;
}
.tool-action-area {
    border-left: 2px solid #f8d7da;
}
@media (max-width: 767px) {
    .tool-container {
        flex-direction: column !important;
    }
    .tool-action-area {
        border-left: none;
        border-top: 2px solid #f8d7da;
    }
}
.blurred {
    filter: blur(2px) grayscale(0.5);
    opacity: 0.7;
}