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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: all 0.3s ease;
}

.container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background-color: var(--bg-secondary);
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 10px var(--shadow);
}

header h1 {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

header h1 i {
  color: var(--accent-primary);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.main-content {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.input-section {
  display: flex;
  flex-direction: column;
}

.output-section {
  display: flex;
  flex-direction: column;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.section-header h2 {
  font-size: 1.4rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-header i {
  color: var(--accent-primary);
}

footer {
  background-color: var(--bg-secondary);
  padding: 1rem 2rem;
  text-align: center;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
}

/* Scrollbar Styling */
textarea::-webkit-scrollbar,
.preview-container::-webkit-scrollbar {
  width: 8px;
}

textarea::-webkit-scrollbar-track,
.preview-container::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: 4px;
}

textarea::-webkit-scrollbar-thumb,
.preview-container::-webkit-scrollbar-thumb {
  background: var(--accent-primary);
  border-radius: 4px;
}

textarea::-webkit-scrollbar-thumb:hover,
.preview-container::-webkit-scrollbar-thumb:hover {
  background: var(--accent-secondary);
}

/* Animation for content updates */
.output-container textarea {
  transition: opacity 0.2s ease;
}

.updating {
  opacity: 0.7;
}

/* Notification styles */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 12px 20px;
  border-radius: 8px;
  color: white;
  font-weight: 500;
  z-index: 1000;
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s ease;
  max-width: 300px;
  word-wrap: break-word;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.notification-success {
  background-color: var(--success);
}

.notification-warning {
  background-color: var(--warning);
}

.notification-error {
  background-color: var(--error);
}

.notification-info {
  background-color: var(--accent-primary);
}