:root{
    --swatch-size: 36px;
    --swatch-gap: 10px;
    --focus-ring: 3px;
    --accent: #109bb9;
    --disabled-opacity: 0.35;
    --card-bg: #fff;
    --card-border: #e6e6e6;
    --shadow: 0 6px 18px rgba(0,0,0,0.06);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

/* wrapper */
.variant-card{
    display: block !important;
    width: 100%;
    max-width: 420px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 16px;
    box-shadow: var(--shadow);
}

.title{
    font-weight: 600;
    margin: 0 0 8px 0;
    font-size: 16px;
}

.swatches{
    display: flex;
    gap: var(--swatch-gap);
    align-items: center;
    flex-wrap: wrap;
}

/* hide native radios */
.swatch-input{
    position: absolute;
    opacity: 0 !important;
    pointer-events: none;
}

.swatch{
    --size: var(--swatch-size);
    width: var(--size);
    height: var(--size);
    border-radius: 50%;
    box-shadow: 0 1px 0 rgba(0,0,0,0.08) inset;
    display: inline-grid;
    place-items: center;
    cursor: pointer;
    position: relative;
    border: 2px solid transparent;
    transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}

/* visible focus & keyboard accessibility */
.swatch:focus,
.swatch:hover{
    transform: translateY(-3px);
}

/* selected state (radio:checked + label) */
.swatch-input:checked + .swatch{
    border-color: var(--accent);
    box-shadow: 0 6px 18px rgba(26,115,232,0.12);
    transform: translateY(-4px) scale(1.03);
}

/* checkmark */
.swatch .check{
    width: 16px;
    height: 16px;
    display: none;
    transform: scale(.9);
}

.swatch-input:checked + .swatch .check{ display: block; }

/* label under swatch for name */
.swatch-label{
    font-size: 12px;
    text-align: center;
    margin-top: 6px;
    color: #333;
}

/* disabled state */
.swatch.disabled{
    cursor: not-allowed;
    opacity: var(--disabled-opacity);
    transform: none !important;
}

.swatch.disabled .overlay{
    display: block;
}

/* small overlay cross for sold out */
.overlay{
    position: absolute;
    inset: 0;
    border-radius: inherit;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: white;
    background: linear-gradient(180deg, rgba(0,0,0,0.25), rgba(0,0,0,0.45));
    border-radius: 50%;
}

/* keyboard-visible focus ring for label when input focused */
.swatch-input:focus + .swatch{
    outline: none;
    box-shadow: 0 0 0 var(--focus-ring) rgba(26,115,232,0.12), 0 6px 18px rgba(0,0,0,0.06);
}

/* show currently selected name */
.selected-info{
    margin-top: 12px;
    font-size: 13px;
    color: #555;
}

/* small responsive tweak */
@media (max-width:420px){
    :root{ --swatch-size: 32px; }
}