:root {
  --page-bg: 226 227 231;
  --navy: 18 28 48;
  --navy-deep: 11 18 33;
  --gold: 199 158 88;
  --gold-bright: 227 193 130;
  --cream: 240 236 226;
  --muted: 152 158 174;

  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out-quad: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem 1.25rem;
  background: rgb(var(--page-bg));
  color: rgb(var(--navy));
  font-family: 'Inter', system-ui, sans-serif;
}

.page {
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.page-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgb(var(--gold) / 0.9);
  -webkit-text-stroke: 0.2px rgb(var(--navy) / 0.4);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.page-title {
  font-family: 'Fraunces', serif;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.45rem;
}

.page-lede {
  font-size: 0.85rem;
  color: rgb(var(--navy) / 0.6);
  margin-bottom: 1.5rem;
}

/* ---------- Counter ---------- */
.counter {
  position: relative;
  background: linear-gradient(160deg, rgb(var(--navy)), rgb(var(--navy-deep)));
  border: 1px solid rgb(var(--gold) / 0.25);
  border-radius: 18px;
  padding: 1.75rem 1.5rem 1.25rem;
  box-shadow: 0 34px 60px -30px rgb(10 14 24 / 0.6);
}

.slot {
  text-align: left;
}

.slot-label {
  display: block;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgb(var(--gold-bright) / 0.75);
  margin-bottom: 0.5rem;
}

.slot-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgb(var(--gold) / 0.22);
}

.amount-input {
  flex: 1;
  min-width: 0;
  background: none;
  border: none;
  outline: none;
  font-family: 'Fraunces', serif;
  font-size: 1.7rem;
  font-weight: 600;
  color: rgb(var(--cream));
}

.amount-input::-webkit-outer-spin-button,
.amount-input::-webkit-inner-spin-button {
  appearance: none;
  margin: 0;
}

.result-value {
  flex: 1;
  min-width: 0;
  font-family: 'Fraunces', serif;
  font-size: 1.7rem;
  font-weight: 700;
  color: rgb(var(--gold-bright));
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.currency-select {
  flex-shrink: 0;
  appearance: none;
  padding: 0.4rem 1.6rem 0.4rem 0.65rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgb(var(--cream));
  background: rgb(255 255 255 / 0.06);
  border: 1px solid rgb(var(--gold) / 0.3);
  border-radius: 999px;
  background-image: linear-gradient(45deg, transparent 50%, rgb(var(--gold-bright)) 50%),
    linear-gradient(135deg, rgb(var(--gold-bright)) 50%, transparent 50%);
  background-position:
    calc(100% - 14px) center,
    calc(100% - 9px) center;
  background-size:
    5px 5px,
    5px 5px;
  background-repeat: no-repeat;
  cursor: pointer;
}

.currency-select option {
  color: rgb(var(--navy));
  background: rgb(var(--cream));
}

.slot-result {
  margin-top: 1.1rem;
}

.swap-btn {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin: 1rem auto;
  border-radius: 50%;
  background: rgb(var(--gold));
  color: rgb(var(--navy-deep));
  border: 3px solid rgb(var(--navy));
  cursor: pointer;
  transition: background-color 150ms ease;
}

.swap-btn svg {
  width: 18px;
  height: 18px;
}

.swap-btn:hover {
  background: rgb(var(--gold-bright));
}

.swap-btn.is-swapping svg {
  animation: swap-spin 420ms var(--ease-out-expo);
}

@keyframes swap-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(180deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .swap-btn.is-swapping svg {
    animation: none;
  }
}

.rate-line {
  margin-top: 1rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.76rem;
  color: rgb(var(--muted));
  text-align: center;
}

.disclaimer {
  margin-top: 1.1rem;
  font-size: 0.7rem;
  color: rgb(var(--navy) / 0.5);
  line-height: 1.5;
}

@media (max-width: 380px) {
  .amount-input,
  .result-value {
    font-size: 1.4rem;
  }
}