:root {
  /* Color variables */
  --color-background: oklch(98% 0.01 240);
  --color-text: oklch(25% 0.02 240);
  --color-primary: oklch(55% 0.2 250);
  --color-primary-hover: oklch(50% 0.2 250);
  --color-secondary: oklch(90% 0.05 250);
  --color-secondary-hover: oklch(85% 0.08 250);
  --color-accent: oklch(55% 0.02 240);
  --color-accent-text: oklch(100 0 0);
  --color-accent-hover: oklch(50% 0.02 240);

  /* Spacing variables */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3rem;
  --space-xl: 5rem;

  /* Font variables */
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: var(--color-background);
  color: var(--color-text);
  min-height: 100vh;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.paste-area {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--color-background);
  z-index: 10;
  padding: var(--space-md);
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.paste-area.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.paste-zone {
  width: 80%;
  height: 60vh;
  border: 3px dashed var(--color-primary);
  border-radius: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  text-align: center;
  cursor: pointer;
  transition: background-color 0.2s ease;
  background-color: var(--color-secondary);
}

.paste-zone:hover,
.paste-zone:focus {
  background-color: var(--color-secondary-hover);
}

.paste-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.result-area {
  width: 100%;
  height: 100%;
  padding: var(--space-sm);
  padding-top: var(--space-lg);
  overflow-y: auto;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.result-area.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.output-container {
  width: 100%;
  max-width: 60rem;
  margin: 0 auto;
  min-height: 80vh;
  padding: var(--space-md);
  background-color: white;
  border: 1px solid var(--color-secondary);
  border-radius: 0.5rem;
  outline: none;
}

.output-container:focus {
  outline: 2px solid var(--color-primary);
}

.output-container hr {
  margin: 0.5em 0;
}

.action-bar {
  display: flex;
  width: 100%;
  max-width: 60rem;
  margin: 0 auto;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  background-color: var(--color-background);
}

.action-bar-left,
.action-bar-right {
  display: flex;
  gap: var(--space-sm);
}

.back-button,
.copy-button {
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-accent);
  color: var(--color-accent-text);
  border: 1px solid var(--color-secondary);
  border-radius: 0.25rem;
  font-size: var(--font-size-sm);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.back-button:hover {
  background-color: var(--color-accent-hover);
}

.copy-button {
  background-color: var(--color-primary);
  color: white;
}

.copy-button:hover {
  background-color: var(--color-primary-hover);
}

.checkbox-control {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
}

.checkbox-control input[type='checkbox'] {
  width: 1rem;
  height: 1rem;
}

/* Content styles */
.output-container hr {
  margin: 0.5em 0;
}