/* ---------- DSEG7 font ---------- */
/* Put your font file here:
   public/fonts/DSEG7Classic-Regular.woff2
*/
@font-face {
  font-family: "DSEG7ClassicRegular";
  src: url("/fonts/DSEG7Classic-Regular.woff2") format("woff2");
  font-display: swap;
}

/* ---------- Layout ---------- */
.tool-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: #0b0f14;
  color: #e7eaf0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

.tool-card {
  width: min(1100px, 100%);
  background: #111824;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  padding: 1rem;
}

.tool-header h1 { margin: 0 0 .25rem 0; font-size: 1.4rem; }
.tool-header p { margin: 0 0 1rem 0; opacity: .85; }

.display-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
  margin-bottom: .75rem;
}

.display-box {
  background: #0b0f14;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  padding: .75rem;
}

.display-label { font-size: .9rem; opacity: .8; margin-bottom: .25rem; }

.sevenseg {
  font-family: "DSEG7ClassicRegular", monospace;
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: 0.08em;
  line-height: 1.1;
}

/* Buttons under denary/binary (your request) */
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1rem;
}

/* ---------- Simple MD3-ish buttons ---------- */
.md3-btn {
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
  color: #e7eaf0;
  padding: .6rem .9rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}
.md3-btn:hover { background: rgba(255,255,255,0.10); }
.md3-btn--tonal { background: rgba(255,255,255,0.10); }

/* ---------- Switches row ---------- */
.switch-row {
  display: grid;
  grid-template-columns: repeat(8, minmax(90px, 1fr));
  gap: .75rem;
}

.switch-col {
  display: grid;
  justify-items: center;
  gap: .35rem;
}

.bit-label { opacity: .85; font-weight: 600; }

/* ---------- “Light switch” rocker ---------- */
.rocker {
  position: relative;
  width: 70px;
  height: 46px;
  display: inline-block;
  user-select: none;
}

.rocker input {
  opacity: 0;
  width: 0;
  height: 0;
}

.rocker-body {
  position: absolute;
  inset: 0;
  border-radius: 12px;
  background: #1a2331;
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: inset 0 0 0 2px rgba(0,0,0,0.35);
}

/* the “toggle” */
.rocker-body::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  width: 58px;
  height: 18px;
  border-radius: 10px;
  background: rgba(255,255,255,0.20);
  transition: transform 180ms ease, background 180ms ease;
}

/* ON position */
.rocker input:checked + .rocker-body::after {
  transform: translateY(16px);
  background: rgba(255,255,255,0.55);
}

@media (max-width: 900px) {
  .switch-row { grid-template-columns: repeat(4, minmax(90px, 1fr)); }
}