/* Left Panel */
.panel-left {
    grid-area: left;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    z-index: 10;
    overflow: hidden;
    box-shadow: inset -1px 0 0 rgba(255,255,255,0.02);
}

/* Right Panel */
.panel-right {
    grid-area: right;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    z-index: 10;
    overflow: hidden;
    box-shadow: inset 1px 0 0 rgba(255,255,255,0.02);
}

/* Panel sections */
.panel-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-subtle);
    background: var(--bg-tertiary);
    flex-shrink: 0;
}

.panel-tab {
    flex: 1;
    padding: 10px 12px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-tertiary);
    background: none;
    border: none;
    cursor: pointer;
    transition: all var(--dur-fast);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid transparent;
    text-align: center;
}

.panel-tab:hover { color: var(--text-secondary); background: var(--bg-hover); }
.panel-tab.active {
    color: var(--accent-hover);
    border-bottom-color: var(--accent);
    background: var(--bg-secondary);
}

.panel-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.panel-section {}

.section-title {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-tertiary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.section-title-action {
    font-size: 10px;
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0;
}
.section-title-action:hover { color: var(--accent-hover); }

/* Pattern grid */
.pattern-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.pat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all var(--dur-normal) var(--ease);
}
.pat-card:hover { border-color: var(--border-strong); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.pat-card.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 2px 16px var(--accent-glow); }
.pat-card.active .pat-name { color: var(--accent-hover); }

.pat-preview {
    width: 100%;
    height: 48px;
    display: block;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    background: var(--bg-tertiary);
    object-fit: cover;
}
.pat-name {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 7px 10px 8px;
    letter-spacing: 0.2px;
    transition: color var(--dur-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Pattern search */
.pattern-search {
    position: relative;
    margin-bottom: 10px;
}
.pattern-search input {
    width: 100%;
    padding: 8px 12px 8px 32px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 12px;
    font-family: var(--font);
    transition: border-color var(--dur-fast);
}
.pattern-search input:focus { border-color: var(--border-focus); outline: none; }
.pattern-search input::placeholder { color: var(--text-tertiary); }
.pattern-search svg {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    color: var(--text-tertiary);
}

/* Category filter pills */
.category-pills {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}
.category-pill {
    padding: 4px 10px;
    font-size: 10px;
    font-weight: 600;
    border-radius: 20px;
    border: 1px solid var(--border-subtle);
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--dur-fast);
}
.category-pill:hover { border-color: var(--border-strong); color: var(--text-secondary); }
.category-pill.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent-hover); }

/* Color pickers */
.palette-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}
.palette-swatch {
    height: 32px;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: border-color var(--dur-normal) var(--ease), transform var(--dur-normal) var(--ease);
}
.palette-swatch:hover { transform: scale(1.03); border-color: var(--border-strong); }
.palette-swatch.active { border-color: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }
.palette-name {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
    pointer-events: none;
    letter-spacing: 0.3px;
}

.custom-colors { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.custom-palette-btn { flex: 0 0 100%; margin-bottom: 2px; }
.custom-colors .color-input-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.custom-colors label {
    font-size: 9px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}
input[type="color"] {
    -webkit-appearance: none;
    appearance: none;
    border: none;
    width: 100%;
    height: 28px;
    border-radius: var(--radius-xs);
    cursor: pointer;
    padding: 0;
    background: transparent;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
input[type="color"]::-webkit-color-swatch { border: 1px solid var(--border-default); border-radius: 4px; }