:root {
  --page-bg: #0A0A0A;
  --orange: #F7931A;
  --orange-dark: #1A1400;
  --black-card: #0D0D0C;
  --divider: #2A2823;
  --input-bg: #FFFFFF;
  --input-greyed: #E4E0D6;
  --text-on-orange: #1C1600;
  --text-primary: #F5F1E8;
  --text-secondary: #9A968E;
  --text-tertiary: #5C594F;
  --radius-lg: 24px;
  --radius-md: 14px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--page-bg);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100%;
}

.page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.orange-card {
  width: 100%;
  max-width: 420px;
  background: var(--orange);
  border-radius: var(--radius-lg);
  padding: 32px 26px 30px;
  box-shadow: 0 20px 40px -10px rgba(0,0,0,0.6);
  text-align: center;
}

.wordmark {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: 30px;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--text-on-orange);
  text-align: center;
  display: inline-block;
  margin: 0 auto 14px;
  padding: 8px 22px;
  border: 2.5px solid var(--text-on-orange);
  border-radius: 12px;
  box-shadow: 4px 4px 0 var(--black-card);
}

.tagline {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-on-orange);
  opacity: 0.75;
  text-align: center;
  margin-bottom: 24px;
}

.wordmark .dot {
  color: var(--black-card);
}

.black-card {
  background: var(--black-card);
  border-radius: var(--radius-lg);
  padding: 28px 24px 24px;
  box-shadow: 0 20px 40px -16px rgba(0,0,0,0.7);
}

.card-header {
  text-align: center;
  margin-bottom: 26px;
}


.eyebrow {
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}

.live-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 0 rgba(247,147,26,0.4);
  animation: pulse 2.2s infinite;
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(247,147,26,0.4); }
  70%  { box-shadow: 0 0 0 6px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.converter {
  display: flex;
  flex-direction: column;
}

.field#satsField {
  order: 1;
}

.swap-btn {
  order: 2;
}

.field#curField {
  order: 3;
}

.field {
  background: transparent;
  padding: 0;
  margin-bottom: 8px;
}

.field-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 10px;
  transition: opacity 0.2s ease;
}


.field-line {
  display: flex;
  align-items: center;
  gap: 10px;
}

.field-line input {
  flex: 1;
  min-width: 0;
  background: var(--input-bg);
  border: none;
  outline: none;
  color: #14130F;
  font-family: 'JetBrains Mono', monospace;
  font-size: 20px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  -moz-appearance: textfield;
  appearance: textfield;
  transition: background 0.2s ease, color 0.2s ease;
}

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


.unit-tag {
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.03em;
  flex-shrink: 0;
  background: var(--orange);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
}

.currency-select {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--orange);
  border: none;
  cursor: pointer;
  color: #FFFFFF;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 14px 14px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  position: relative;
  transition: filter 0.15s ease;
}

.currency-select:hover { filter: brightness(1.08); }

.currency-select svg {
  width: 11px;
  height: 11px;
  transition: transform 0.2s ease;
}

.currency-select.open svg {
  transform: rotate(180deg);
}

.dropdown-panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: #1C1A17;
  border: 1px solid var(--divider);
  border-radius: var(--radius-md);
  padding: 6px;
  min-width: 168px;
  box-shadow: 0 16px 32px -12px rgba(0,0,0,0.7);
  z-index: 10;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(0.98);
  transform-origin: top right;
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
}

.dropdown-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.dropdown-option {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding: 10px 11px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  transition: background 0.12s ease;
}

.dropdown-option:hover {
  background: rgba(247,147,26,0.15);
}

.dropdown-option .opt-country {
  color: var(--text-secondary);
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 12px;
}

.dropdown-option.active {
  color: var(--orange);
}

.dropdown-divider {
  height: 1px;
  background: var(--divider);
  margin: 6px 4px;
}

.swap-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin: -4px auto 4px;
  background: var(--orange);
  color: #FFFFFF;
  border: 3px solid var(--black-card);
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  z-index: 2;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.15s ease;
}

.swap-btn:hover {
  filter: brightness(1.1);
}

.swap-btn.spin {
  transform: rotate(180deg);
}

.swap-btn svg {
  width: 17px;
  height: 17px;
}

.footer {
  margin-top: 20px;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-tertiary);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.02em;
}

#btcPrice {
  color: var(--text-secondary);
}

.error {
  font-size: 12px;
  color: var(--orange);
  margin-top: 14px;
  padding: 10px 14px;
  background: rgba(247,147,26,0.12);
  border-radius: var(--radius-sm);
  display: none;
  text-align: center;
}

.field-wrap {
  position: relative;
}

::selection { background: rgba(247,147,26,0.25); }

@media (max-width: 380px) {
  .page {
    padding: 24px 12px;
  }

  .orange-card {
    padding: 24px 16px 22px;
  }

  .black-card {
    padding: 22px 16px 18px;
  }

  .wordmark {
    font-size: 21px;
  }

  .field-line input {
    font-size: 17px;
    padding: 12px 14px;
  }

  .unit-tag,
  .currency-select {
    padding: 12px 10px;
    font-size: 12px;
  }
}