:root {
  --background: 0 0% 100%;
  --foreground: 240 10% 3.9%;
  --card: 0 0% 100%;
  --card-foreground: 240 10% 3.9%;
  --popover: 0 0% 100%;
  --popover-foreground: 240 10% 3.9%;
  --primary: 240 5.9% 10%;
  --primary-foreground: 0 0% 98%;
  --secondary: 240 4.8% 95.9%;
  --secondary-foreground: 240 5.9% 10%;
  --muted: 240 4.8% 95.9%;
  --muted-foreground: 240 3.8% 46.1%;
  --accent: 240 4.8% 95.9%;
  --accent-foreground: 240 5.9% 10%;
  --destructive: 0 84.2% 60.2%;
  --destructive-foreground: 0 0% 98%;
  --border: 240 5.9% 90%;
  --input: 240 5.9% 90%;
  --ring: 240 5.9% 10%;
  --radius: 0.5rem;
}

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

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background-color: hsl(var(--background));
  color: hsl(var(--foreground));
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background-color: hsl(var(--card));
  border-right: 1px solid hsl(var(--border));
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  position: sticky;
  top: 0;
  height: 100vh;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.logo-box {
  background-color: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
  width: 32px;
  height: 32px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
}

.nav-group {
  margin-bottom: 1.5rem;
}

.nav-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: hsl(var(--muted-foreground));
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  padding-left: 0.75rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius);
  color: hsl(var(--foreground));
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color 0.2s;
}

.nav-link:hover {
  background-color: hsl(var(--accent));
}

.nav-link.active {
  background-color: hsl(var(--accent));
  font-weight: 600;
}

.nav-link i {
  width: 18px;
  height: 18px;
  color: hsl(var(--muted-foreground));
}

.nav-link.active i {
  color: hsl(var(--foreground));
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 2rem 3rem;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
}

.page-info h1 {
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-info p {
  color: hsl(var(--muted-foreground));
  font-size: 0.875rem;
}

.header-actions {
  display: flex;
  gap: 0.75rem;
}

/* UI Components (Shadcn style) */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  height: 2.5rem;
  padding: 0 1rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: opacity 0.2s;
}

.button-primary {
  background-color: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
}

.button-outline {
  background-color: transparent;
  border-color: hsl(var(--border));
  color: hsl(var(--foreground));
}

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

.card {
  background-color: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: calc(var(--radius) + 2px);
  padding: 1.5rem;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.875rem;
  color: hsl(var(--muted-foreground));
  margin-bottom: 1.5rem;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  padding: 1.5rem;
}

.stat-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: hsl(var(--muted-foreground));
  margin-bottom: 0.25rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
}

.stat-sub {
  font-size: 0.75rem;
  color: hsl(var(--muted-foreground));
  margin-top: 0.25rem;
}

/* Table */
.table-container {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th {
  text-align: left;
  padding: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: hsl(var(--muted-foreground));
  border-bottom: 1px solid hsl(var(--border));
}

.table td {
  padding: 1rem 0.75rem;
  font-size: 0.875rem;
  border-bottom: 1px solid hsl(var(--border));
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-outline {
  border: 1px solid hsl(var(--border));
}

/* Translation Interface */
.translation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.editor-box {
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  height: 600px;
}

.editor-header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid hsl(var(--border));
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: hsl(var(--muted));
}

.editor-content {
  padding: 1.5rem;
  flex: 1;
  overflow-y: auto;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.ai-hint {
  background-color: hsl(var(--muted));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  padding: 1rem;
  margin-top: 1rem;
  font-size: 0.875rem;
  display: flex;
  gap: 0.75rem;
}