/* Scoped CSS for 1-70 Number Generator
   Namespaced to .ontt-rng70 to avoid global style pollution.
   Uses Arial font and button color #4CAF50 as requested.
*/

/* Theme variables (scoped via root-level custom props for clarity) */
.ontt-rng70 {
  --ontt-bg: #ffffff00; /* transparent wrapper if site defines background */
  --ontt-surface: #0f1720;
  --ontt-panel: #0b0c0d;
  --ontt-accent: #4CAF50; /* required button color */
  --ontt-accent-strong: #3e8e3d;
  --ontt-muted: #cbd5df;
  --ontt-border: rgba(255,255,255,0.04);
  --ontt-radius: 12px;
  --ontt-gap: 12px;
  --ontt-font: Arial, Helvetica, sans-serif;
  --ontt-touch: 44px;
  font-family: var(--ontt-font);
  color: var(--ontt-muted);
  display: block;
}

/* Card */
.ontt-rng70__card {
  background: #000000; /* pure black background as requested */
  border-radius: var(--ontt-radius);
  padding: 16px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.6);
  border: 1px solid var(--ontt-border);
  max-width: 880px;
  margin: 0 auto;
  overflow: hidden;
}

/* Header */
.ontt-rng70__header { text-align: center; margin-bottom: 10px; }
.ontt-rng70__title {
  margin: 0;
  font-size: 18px;
  text-transform: none;
  color: #e6f7ea;
  font-weight: 700;
}

/* Layout: mobile-first */
.ontt-rng70__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  align-items: start;
}

/* Controls */
.ontt-rng70__controls {
  background: linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.02));
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--ontt-border);
}

.ontt-rng70__label {
  display: block;
  font-size: 13px;
  color: var(--ontt-muted);
  margin-bottom: 8px;
  font-weight: 600;
}

.ontt-rng70__hint { font-weight: 400; color: rgba(255,255,255,0.6); margin-left: 6px; font-size: 12px; }

/* Row with input + generate */
.ontt-rng70__row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.ontt-rng70__input {
  min-height: var(--ontt-touch);
  width: 86px;
  padding: 8px 10px;
  font-size: 15px;
  border-radius: 8px;
  border: 1px solid var(--ontt-border);
  background: rgba(255,255,255,0.01);
  color: #f3f7f3;
  outline: none;
  box-sizing: border-box;
}

.ontt-rng70__input:focus {
  box-shadow: 0 6px 18px rgba(76,175,80,0.08);
  border-color: var(--ontt-accent-strong);
}

/* Buttons (Generate, Clear, Copy, Export) */
.ontt-rng70__btn {
  min-height: var(--ontt-touch);
  padding: 10px 14px;
  border-radius: 8px;
  border: none;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  background: transparent;
  color: #fff;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.ontt-rng70__btn:active { transform: translateY(1px); }

.ontt-rng70__btn--generate {
  background: var(--ontt-accent);
  color: #fff;
  border: 1px solid rgba(0,0,0,0.12);
  box-shadow: 0 8px 24px rgba(76,175,80,0.12);
}
.ontt-rng70__btn--generate:hover {
  background: var(--ontt-accent-strong);
  box-shadow: 0 12px 30px rgba(62,142,61,0.18);
}

/* Secondary controls row */
.ontt-rng70__options {
  display: flex;
  gap: 12px;
  margin-top: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.ontt-rng70__checkbox { display:flex; align-items:center; gap:8px; cursor:pointer; user-select:none; }
.ontt-rng70__checkbox-input { width:16px; height:16px; }
.ontt-rng70__checkbox-label { font-size:13px; color:var(--ontt-muted); font-weight:600; }

/* Bottom control row */
.ontt-rng70__control-row {
  display:flex;
  gap:8px;
  margin-top:12px;
  flex-wrap:wrap;
}
.ontt-rng70__btn--clear { background: transparent; border: 1px solid var(--ontt-border); color: var(--ontt-muted); }
.ontt-rng70__btn--copy { background: rgba(255,255,255,0.02); border: 1px solid var(--ontt-border); color: #fff; }
.ontt-rng70__btn--export { background: rgba(255,255,255,0.02); border: 1px solid var(--ontt-border); color: #fff; }

/* Output area */
.ontt-rng70__output {
  background: linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.02));
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--ontt-border);
}

.ontt-rng70__display {
  height: 120px;
  min-height: 88px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size: 42px;
  font-weight: 800;
  color: #e9f9e9;
  background: linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.02));
  border-radius: 8px;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
  font-family: Arial, Helvetica, sans-serif;
  transition: transform 220ms ease, box-shadow 220ms ease;
  user-select: none;
}

/* Quick pop effect when number updates */
.ontt-rng70__display.ontt-rng70__pop { transform: scale(1.06); box-shadow: 0 14px 40px rgba(76,175,80,0.12); }

/* History */
.ontt-rng70__history-title { font-size:13px; color:var(--ontt-muted); margin-bottom:8px; font-weight:700; }
.ontt-rng70__history-list { display:flex; gap:8px; flex-wrap:wrap; list-style:none; padding:0; margin:0; }
.ontt-rng70__history-item {
  min-width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:8px;
  border-radius:8px;
  background: rgba(255,255,255,0.01);
  color:#dfffe0;
  font-weight:700;
  border: 1px solid var(--ontt-border);
}

/* Footer */
.ontt-rng70__footer { display:flex; justify-content:space-between; align-items:center; margin-top:12px; color:var(--ontt-muted); font-size:13px; }

/* Desktop split layout */
@media (min-width: 760px) {
  .ontt-rng70__layout { grid-template-columns: 1fr 1fr; gap: 18px; align-items:start; }
  .ontt-rng70__display { height: 160px; font-size: 54px; }
}

/* Tablet adjustments */
@media (min-width: 480px) and (max-width: 759px) {
  .ontt-rng70__row { gap: 12px; }
  .ontt-rng70__input { width: 100px; }
}

/* Accessibility focus */
.ontt-rng70__btn:focus, .ontt-rng70__input:focus, .ontt-rng70__checkbox-input:focus {
  outline: 3px solid rgba(76,175,80,0.12);
  outline-offset: 2px;
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}