.gradient-generator-wrapper .tool-card {
    background: #ffffff;
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    border-top: 4px solid var(--primary) !important;
}

.gradient-generator-wrapper h1 {
    font-size: 2.25rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.generator-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 2rem;
    align-items: start;
    margin-top: 2rem;
}

/* Preview Panel */
.preview-box-wrapper {
    /* Checkboard background for transparency */
    background-image: linear-gradient(45deg, #e2e8f0 25%, transparent 25%), linear-gradient(-45deg, #e2e8f0 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e2e8f0 75%), linear-gradient(-45deg, transparent 75%, #e2e8f0 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    background-color: #f8fafc;
    border-radius: 1rem;
    overflow: hidden;
}

.btn-white {
    background: white;
    color: var(--text);
    border: 1px solid var(--gray-200);
    font-weight: 600;
}

/* History */
.history-swatch {
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    border: 2px solid white;
    transition: transform 0.2s;
}
.history-swatch:hover {
    transform: scale(1.1);
}

/* Controls Panel */
.control-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: 0.5rem;
    display: block;
}

.type-btn {
    background: transparent;
    border: none;
    transition: all 0.2s ease;
}
.type-btn.active {
    background: white;
    color: var(--primary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

/* Angle Slider & Dial */
input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    outline: none;
    background: var(--gray-200);
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    transition: transform 0.1s;
}
input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Color Stops List */
.stop-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--gray-50);
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
    transition: box-shadow 0.2s;
}
.stop-item.sortable-ghost {
    opacity: 0.4;
}
.stop-item.sortable-drag {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    background: white;
    cursor: grabbing;
}

.drag-handle {
    color: var(--gray-400);
    cursor: grab;
    padding: 0.5rem 0.25rem;
}
.drag-handle:active {
    cursor: grabbing;
}

/* Native Color Picker Wrapper */
.color-picker-wrapper {
    position: relative;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--gray-300);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.color-picker-wrapper input[type="color"] {
    position: absolute;
    top: -10px; left: -10px;
    width: 60px; height: 60px; /* Oversized to hide native borders */
    border: none;
    cursor: pointer;
    padding: 0;
}

.stop-hex {
    font-family: 'Inter', monospace;
    font-size: 0.85rem;
    font-weight: 600;
    width: 80px;
    padding: 0.35rem 0.5rem;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    outline: none;
    text-transform: uppercase;
}
.stop-hex:focus {
    border-color: var(--primary);
}

.stop-percent-text {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--slate-600);
    width: 40px;
    text-align: right;
}

.btn-remove-stop {
    color: var(--gray-400);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: color 0.2s;
    padding: 0.5rem;
}
.btn-remove-stop:hover {
    color: #ef4444;
}

/* Buttons */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border: none;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* Toast */
#copyMessageBox {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #10b981;
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    transform: translateY(150%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
    font-weight: 600;
}
#copyMessageBox.show {
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
    .generator-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 480px) {
    .stop-item {
        flex-wrap: wrap;
    }
    .stop-item > input[type="range"] {
        width: 100%;
        order: 5;
        margin-top: 0.5rem;
    }
}