computing-box/src/styles/binary.css

/* DSEG7ClassicRegular font */
@font-face{
  font-family: "DSEG7ClassicRegular";
  src:
    url("/fonts/DSEG7Classic-Regular.ttf") format("truetype"),
    url("/fonts/DSEG7Classic-Regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

.binary-wrap{
  padding-top: 6px;
}

.topGrid{
  display:grid;
  grid-template-columns: 1fr 340px;
  gap: 28px;
  align-items:start;
}

.readout{
  background: transparent;
  text-align:center;
  padding: 10px 10px 0;
}

.label{
  letter-spacing: .18em;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 13px;
  margin-top: 10px;
}

.num{
  font-family: "DSEG7ClassicRegular", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-weight: 400;
  color: var(--accent);
  text-shadow: 0 0 18px var(--accent-dim);
}

.denary{
  font-size: 72px; /* smaller */
  line-height: 1.0;
  margin: 6px 0 10px;
}

.binary{
  font-size: 46px; /* smaller */
  letter-spacing: .12em;
  line-height: 1.15;
  margin: 6px 0 14px;
  white-space: pre-wrap;
  word-break: break-word;
  display:inline-block;
  text-align:center;
}

.controls{
  margin-top: 8px;
  display:flex;
  justify-content:center;
  gap: 12px;
  flex-wrap: wrap;
}

.controls--twoRows{
  flex-direction: column;
  gap: 10px;
}

.controlsRow{
  display:flex;
  gap: 12px;
  justify-content:center;
  flex-wrap: wrap;
}

.btn{
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  color: #fff;
  padding: 12px 14px;
  border-radius: 12px;
  font-weight: 800;
  cursor: pointer;
  min-width: 160px;
}

.btn:active{ transform: translateY(1px); }

.btn--green{
  background: rgba(51,255,122,.16);
  border-color: rgba(51,255,122,.45);
}

.btn--green:hover{
  background: rgba(51,255,122,.22);
}

.btn--spin{
  min-width: 120px;
  font-size: 18px; /* bigger */
}

.divider{
  margin-top: 22px;
  border-top: 1px solid var(--line);
}

.panelCol{
  display:flex;
  flex-direction:column;
  gap: 14px;
}

.card{
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 14px;
}

.cardTitle{
  letter-spacing: .18em;
  font-weight: 900;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 12px;
  margin: 0 0 10px;
}

.hint{
  color: var(--muted);
  font-size: 12px;
  margin-top: 8px;
  line-height: 1.35;
}

.toggleRow{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 10px;
}

.toggleLabel{
  color: var(--text);
  font-weight: 800;
  font-size: 14px;
}

.switch{
  position:relative;
  width:56px;
  height:34px;
  display:inline-block;
  flex:0 0 auto;
}
.switch input{
  opacity:0;
  width:0;
  height:0;
}
.slider{
  position:absolute;
  inset:0;
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.14);
  border-radius:999px;
  transition:.18s ease;
}
.slider::before{
  content:"";
  position:absolute;
  height:28px;
  width:28px;
  left:3px;
  top:2px;
  background: rgba(255,255,255,.92);
  border-radius:50%;
  transition:.18s ease;
}
.switch input:checked + .slider{
  background: rgba(51,255,122,.20);
  border-color: rgba(51,255,122,.55);
}
.switch input:checked + .slider::before{
  transform: translateX(22px);
  background: var(--accent);
}

.bitWidthRow{
  display:grid;
  grid-template-columns:44px 1fr 44px;
  gap:10px;
  align-items:center;
}

.miniBtn{
  height:44px;
  width:44px;
  border-radius:12px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  color:#fff;
  cursor:pointer;
  font-weight:900;
  font-size:18px;
}

.bitInputWrap{
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  border-radius:12px;
  padding:10px 12px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

.bitInputLabel{
  color: var(--muted);
  font-size:12px;
  font-weight:900;
  letter-spacing:.18em;
  text-transform:uppercase;
}

.bitInput{
  width:86px;
  text-align:right;
  background: transparent;
  border: none;
  outline: none;
  color: var(--accent);
  font-family:"DSEG7ClassicRegular", ui-monospace, monospace;
  font-size:28px;
}
.bitInput::-webkit-outer-spin-button,
.bitInput::-webkit-inner-spin-button{
  -webkit-appearance:none;
  margin:0;
}

/* Bits: wrap every 8 */
.bits{
  --cols: 8;
  margin-top: 26px;
  padding-top: 18px;
  display:grid;
  grid-template-columns: repeat(var(--cols), 90px);
  justify-content: center; /* centres when < 8 too */
  gap: 18px;
  align-items:end;
  text-align:center;
}

.bit{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap: 10px;
  padding: 8px 4px;
}

/* Bulb emoji bigger */
.bulb{
  font-size: 26px;      /* bigger */
  line-height: 1;
  filter: grayscale(1);
  opacity: .35;
  transform: translateY(2px);
}
.bulb.on{
  filter: grayscale(0);
  opacity: 1;
  text-shadow: 0 0 16px rgba(255,216,107,.55);
}

.bitVal{
  font-size: 28px;
  color: var(--text);
  opacity: .95;
  line-height: 1;
  min-height: 34px;
}

@media (max-width: 980px){
  .topGrid{ grid-template-columns: 1fr; }
  .denary{ font-size: 62px; }
  .binary{ font-size: 40px; }
}