:root {
  --card-bg: var(--surface);
  --card-border: var(--border);
  --card-shadow: var(--shadow);
}

.url-panel {
  max-width: 1080px;
  margin: 0 auto;
}

.calc-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-weight: 600;
  color: var(--muted);
}

.field-hint {
  font-size: 0.82rem;
  color: var(--muted);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.toolbar-options {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.segmented__btn {
  position: relative;
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 8px 16px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

.segmented__btn:hover:not(.is-active) {
  color: var(--text);
  background: rgba(var(--text-rgb), 0.05); /* Fallback or just slight hover */
}

.segmented__btn.is-active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

/* Remove local .check overrides to use global guide styles (chip style) */
/* Adjust toolbar for taller controls */
.toolbar { 
  align-items: center; 
}

.check {
  margin: 0; /* Clear any defaults */
  height: 48px; /* Slightly compact than global 60px if desired, or let global rule? Global is 60px. */
  padding: 0 16px;
}

.check span {
  font-size: 0.9rem;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.io-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.io-pane {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.input-area {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: transparent;
  border: none;
}

#url-input,
#url-output {
  width: 100%;
  border: none !important;
  background: transparent !important;
  padding: 0 !important;
  font-size: 1.4rem;
  line-height: 1.6;
  color: var(--text);
  resize: none;
  overflow: hidden;
  height: auto;
  min-height: 220px;
  outline: none;
  font-family: inherit;
  border-radius: 0;
}

#url-input:focus,
#url-output:focus {
  outline: none !important;
  box-shadow: none !important;
  border: none !important;
}

#url-input::placeholder,
#url-output::placeholder {
  color: var(--muted);
  font-weight: 300;
}

.output-pane textarea {
  min-height: 240px;
  border: none;
  background: transparent;
  padding: 6px 2px 6px 0;
  box-shadow: none;
  line-height: 1.5;
  resize: vertical;
}

.output-pane textarea:read-only {
  cursor: pointer;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0)) transparent;
}

@media (max-width: 720px) {
  .toolbar {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .io-grid {
    grid-template-columns: 1fr;
  }
}