.tool-text-case-converter {
    background: linear-gradient(160deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);
}

.tool-text-case-converter .text-case-wrapper {
    border: none;
    border-radius: 1rem;
    background: #ffffff;
    box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(15, 23, 42, 0.04);
    overflow: hidden;
    border-left: 4px solid #3B82F6;
}

.tool-text-case-converter .text-case-icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: linear-gradient(135deg, #3B82F6 0%, #1F2937 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

.tool-text-case-converter .form-control {
    border: 2px solid #e2e8f0;
    border-radius: 0.5rem;
}

.tool-text-case-converter .form-control:focus {
    border-color: #3B82F6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.text-case-modes {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tool-text-case-converter .btn-case {
    border: 2px solid #e2e8f0;
    background: #fff;
    color: #1F2937 !important;
    font-weight: 600;
    border-radius: 0.5rem;
    padding: 0.55rem 0.9rem;
}

.tool-text-case-converter .btn-case:hover,
.tool-text-case-converter .btn-case:focus {
    border-color: #94a3b8;
    background: #f8fafc;
    color: #1F2937 !important;
}

.tool-text-case-converter .btn-case.is-active,
.tool-text-case-converter .btn-case.is-active:hover,
.tool-text-case-converter .btn-case.is-active:focus {
    border-color: #2563eb;
    background: #3B82F6;
    color: #fff !important;
}

.tool-text-case-converter .btn-case-copy {
    border: 2px solid #e2e8f0;
    background: #fff;
    color: #1F2937 !important;
    font-weight: 600;
    border-radius: 0.5rem;
    padding: 0.55rem 1rem;
}

.tool-text-case-converter .btn-case-copy:hover,
.tool-text-case-converter .btn-case-copy:focus,
.tool-text-case-converter .btn-case-copy:active {
    border-color: #94a3b8;
    background: #f8fafc;
    color: #1F2937 !important;
}

.tool-text-case-converter .btn-case-copy.copied,
.tool-text-case-converter .btn-case-copy.copied:hover {
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.12);
    color: #16a34a !important;
}

@media (max-width: 575.98px) {
    .tool-text-case-converter .btn-case,
    .tool-text-case-converter .btn-case-copy {
        width: 100%;
    }
}