/* Mobile-first converter styles */
.converter {
  display: grid;
  justify-items: center;
  margin-top: var(--spacing-lg);
  padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
  .converter {
    margin-top: var(--spacing-xl);
    padding: 0;
  }
}

.converter-form {
  width: 100%;
  max-width: 860px;
  display: grid;
  gap: var(--spacing-md);
}

/* Mobile-first input layout */
.input-row {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  align-items: stretch;
}

@media (min-width: 640px) {
  .input-row {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

.input-actions {
  display: flex;
  gap: var(--spacing-sm);
  width: 100%;
}

@media (min-width: 640px) {
  .input-actions {
    width: auto;
  }
}

.tx-input {
  width: 100%;
  appearance: none;
  border: 1px solid var(--control-border);
  background: var(--control-bg);
  color: var(--text);
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 42px;
  border-radius: 12px;
  font-size: 16px; /* Prevents zoom on iOS */
  line-height: 1.4;
  transition: border-color .2s, box-shadow .2s, background .2s;
  min-height: 52px; /* Touch-friendly */
}

@media (min-width: 768px) {
  .tx-input {
    font-size: var(--text-base);
    min-height: auto;
  }
}

.tx-input::placeholder {
  color: #7e93ac;
}

.tx-input:focus {
  outline: none;
  border-color: var(--control-focus);
  box-shadow: 0 0 0 6px rgba(0, 224, 255, 0.08);
  background: rgba(255,255,255,0.1);
}

.input-affix.left {
  position: absolute;
  inset: 0 auto 0 0;
  width: 42px;
  display: grid;
  place-items: center;
  color: var(--mempool-cyan);
  pointer-events: none;
  z-index: 1;
}

.convert-btn {
  border: 0;
  cursor: pointer;
  border-radius: 12px;
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(90deg, var(--btn-grad-from), var(--btn-grad-to));
  color: white;
  font-weight: 700;
  font-size: var(--text-sm);
  box-shadow: var(--btn-shadow);
  transition: transform .2s, filter .2s, box-shadow .2s, background .2s;
  white-space: nowrap;
  min-height: 52px; /* Touch-friendly */
  flex: 1;
}

@media (min-width: 640px) {
  .convert-btn {
    flex: none;
    min-height: auto;
  }
}

.examples-btn {
  border: 1px solid var(--control-border);
  cursor: pointer;
  border-radius: 12px;
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-weight: 500;
  font-size: var(--text-sm);
  transition: all .2s;
  white-space: nowrap;
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

@media (min-width: 640px) {
  .examples-btn {
    min-height: auto;
  }
}

.examples-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--control-focus);
}

@media (min-width: 768px) {
  .convert-btn {
    font-size: var(--text-base);
  }
}

.convert-btn:hover {
  transform: translateY(-2px);
  background: linear-gradient(90deg, var(--btn-hover-from), var(--btn-hover-to));
  box-shadow: 0 14px 40px rgba(6, 182, 212, 0.35);
}

.convert-btn:disabled {
  opacity: 0.7;
  cursor: progress;
  transform: none;
}

.btn-inner {
  display: inline-grid;
  grid-auto-flow: column;
  gap: var(--spacing-sm);
  align-items: center;
  justify-content: center;
}

.form-error {
  margin: var(--spacing-xs) var(--spacing-xs) 0;
  color: var(--error);
  font-size: var(--text-sm);
  line-height: 1.4;
}

.helper {
  margin: 0;
  color: var(--muted);
  font-size: var(--text-xs);
  line-height: 1.5;
  padding: 0 var(--spacing-xs);
}

@media (min-width: 768px) {
  .helper {
    font-size: var(--text-sm);
  }
}

.example {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--control-border);
  padding: var(--spacing-sm);
  border-radius: 8px;
  font-family: monospace;
  font-size: var(--text-xs);
  word-break: break-all;
}

@media (min-width: 768px) {
  .example {
    font-size: var(--text-sm);
  }
}

/* Screen-reader only label */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
/* Examples dropdown */
.examples-dropdown {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--control-border);
  border-radius: 12px;
  padding: var(--spacing-md);
  margin-top: var(--spacing-sm);
}

.examples-header {
  color: var(--muted);
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
}

.examples-list {
  display: grid;
  gap: var(--spacing-xs);
  max-height: 300px;
  overflow-y: auto;
}

.example-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: var(--spacing-sm);
  cursor: pointer;
  transition: all .2s;
  text-align: left;
  width: 100%;
}

.example-item:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--control-focus);
  transform: translateY(-1px);
}

.example-name {
  color: var(--text);
  font-weight: 500;
  font-size: var(--text-sm);
  margin-bottom: 2px;
}

.example-txid {
  color: var(--muted);
  font-size: var(--text-xs);
  font-family: monospace;
}