/* Dark mode (default) */
:root,
:root[data-theme="dark"] {
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --accent-primary: #60a5fa;
  --accent-hover: #3b82f6;
  --border-color: rgba(255, 255, 255, 0.1);
  --success-bg: rgba(34, 197, 94, 0.1);
  --success-border: rgba(34, 197, 94, 0.3);
  --success-color: #22c55e;
  --error-color: #ef4444;
}

/* Light mode */
:root[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --text-primary: #0a0a0a;
  --text-secondary: #6b7280;
  --accent-primary: #3b82f6;
  --accent-hover: #2563eb;
  --border-color: rgba(0, 0, 0, 0.1);
  --success-bg: rgba(34, 197, 94, 0.1);
  --success-border: rgba(34, 197, 94, 0.3);
  --success-color: #16a34a;
  --error-color: #dc2626;
}

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

body {
  font-family: "Inter", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
}

.header {
  text-align: center;
  margin-bottom: 3rem;
}

.title {
  font-family: "Fira Code", monospace;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
}

.main-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  height: calc(100vh - 200px);
}

.panel {
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  overflow: hidden;
}

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

.panel-header h3 {
  font-family: "Fira Code", monospace;
  font-size: 1rem;
  font-weight: 600;
}

.output-actions {
  display: flex;
  gap: 0.5rem;
}

.btn {
  font-family: "Fira Code", monospace;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

.btn-primary {
  background: var(--accent-primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.content-textarea {
  flex: 1;
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  color: var(--text-primary);
  font-family: "Inter", sans-serif;
  font-size: 0.9375rem;
  line-height: 1.6;
  resize: none;
  outline: none;
}

.content-textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.1);
}

.content-textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.content-output {
  flex: 1;
  overflow-y: auto;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
}

.empty-state,
.loading-state,
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-secondary);
  text-align: center;
}

.empty-state i,
.loading-state i {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.loading-state i {
  color: var(--accent-primary);
}

.error-state i {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--error-color);
}

.error-details {
  font-size: 0.75rem;
  opacity: 0.7;
  margin-top: 0.5rem;
}

.rewritten-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  height: 100%;
}

.rewrite-info {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  border-radius: 6px;
}

.rewrite-info i {
  color: var(--success-color);
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.rewrite-info p {
  color: var(--text-primary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0;
}

.rewritten-text {
  flex: 1;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1.5rem;
  font-family: "Inter", sans-serif;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-primary);
  overflow-y: auto;
  overflow-x: hidden;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

@media (max-width: 768px) {
  .main-content {
    grid-template-columns: 1fr;
    height: auto;
  }

  .panel {
    min-height: 400px;
  }
}