body {
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
}

.navbar {
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.nav-link {
    position: relative;
    transition: color 0.3s;
}

.nav-link.active {
    color: #0d6efd !important;
    font-weight: 500;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #0d6efd;
}

.nav-link:hover {
    color: #0d6efd !important;
}

.card {
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.card-body {
    padding: 20px;
}

#cirrocumulus-container {
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 15px;
    background: white;
}

.form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.25rem rgba(13,110,253,.25);
}

.progress {
    height: 20px;
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
}

.alert {
    margin-bottom: 0;
}

.upload-status {
    min-height: 50px;
}