.item-builder-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
    gap: 18px;
}

.item-builder-layout .tool-panel {
    min-width: 0;
}

.item-builder-stack {
    display: grid;
    align-content: start;
    gap: 18px;
}

.version-callout {
    margin-top: 14px;
    padding: 14px 16px;
    border-radius: 8px;
    border: 1px solid rgba(96, 165, 250, 0.22);
    background: rgba(15, 23, 42, 0.42);
}

.version-callout h3 {
    margin: 0 0 8px;
    font-size: 1rem;
}

.version-callout p {
    margin: 0;
    color: var(--text-dim);
    line-height: 1.65;
}

.item-version-groups {
    display: grid;
    gap: 14px;
    margin-top: 16px;
}

.item-version-group {
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.5);
    padding: 14px;
}

.item-version-group h3 {
    margin: 0 0 10px;
    font-size: 1rem;
}

.item-version-group p {
    margin: 0 0 12px;
    color: var(--text-dim);
    line-height: 1.55;
}

.item-version-group[hidden] {
    display: none !important;
}

.item-preview-card {
    display: grid;
    align-content: start;
    gap: 18px;
    padding: 16px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.44);
}

.item-preview-head {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 16px;
    align-items: center;
}

.item-preview-icon {
    width: 88px;
    height: 88px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background:
        radial-gradient(circle at top, rgba(255, 255, 255, 0.12), transparent 58%),
        linear-gradient(180deg, rgba(37, 99, 235, 0.3), rgba(2, 6, 23, 0.9));
    border: 1px solid rgba(148, 163, 184, 0.22);
    box-shadow: inset 0 0 22px rgba(255, 255, 255, 0.08);
}

.item-preview-icon span {
    font-size: 2rem;
}

.item-preview-copy h2 {
    margin: 0 0 6px;
    font-size: 1.32rem;
}

.item-preview-copy p {
    margin: 0;
    color: var(--text-dim);
    line-height: 1.6;
}

.item-preview-note {
    color: var(--text-dim);
    line-height: 1.65;
}

.item-preview-note p {
    margin: 0;
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 10px;
    border-radius: 999px;
    background: rgba(59, 130, 246, 0.16);
    border: 1px solid rgba(96, 165, 250, 0.24);
    color: #dbeafe;
    font-size: 0.84rem;
    max-width: 100%;
}

.chip strong {
    color: #ffffff;
    font-size: 0.8rem;
}

.chip code {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
}

.item-builder-help {
    margin: 0;
    padding-left: 18px;
    color: var(--text-dim);
    line-height: 1.65;
}

.item-builder-help li + li {
    margin-top: 6px;
}

.item-builder-output-note {
    margin-top: 12px;
    color: var(--text-dim);
    line-height: 1.6;
}

@media (max-width: 980px) {
    .item-builder-layout {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 640px) {
    .item-preview-head {
        grid-template-columns: minmax(0, 1fr);
    }

    .item-preview-icon {
        width: 72px;
        height: 72px;
    }
}

.tool-color-grid {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 12px;
    align-items: center;
}

.tool-color-grid input[type="color"] {
    width: 54px;
    min-width: 54px;
    height: 44px;
    padding: 3px;
    cursor: pointer;
}

.input-with-clear {
    display: flex;
    gap: 8px;
    align-items: center;
}

.input-with-clear input {
    flex-grow: 1;
    min-width: 0;
}

.input-clear-btn {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    border: 1px solid rgba(148, 163, 184, 0.22);
    background: rgba(15, 23, 42, 0.5);
    color: var(--text-dim);
    font-size: 1.2rem;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: all 0.2s;
    line-height: 1;
}

.input-clear-btn:hover {
    background: rgba(148, 163, 184, 0.1);
    color: #fff;
}