:root {
  /* Colors - Light Theme */
  --bg-color: #f8fafc;
  --text-color: #1e293b;
  --text-muted: #64748b;
  --primary-color: #3b82f6;
  --primary-hover: #2563eb;
  --accent-color: #8b5cf6;
  --success-color: #10b981;
  --danger-color: #ef4444;

  /* Glassmorphism - Light */
  --card-bg: rgba(255, 255, 255, 0.7);
  --card-border: rgba(0, 0, 0, 0.1);
  --glass-bg: rgba(0, 0, 0, 0.05);
  --glass-border: rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-base: 16px;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

.container.full-width {
  max-width: 100%;
  padding-left: var(--spacing-xl);
  padding-right: var(--spacing-xl);
}

.header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.header h1 {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  background: linear-gradient(to right, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--spacing-xs);
}

.header p {
  color: var(--text-muted);
  font-size: var(--font-size-lg);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

/* Card Component */
/* Card Component */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  backdrop-filter: blur(12px);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  display: flex;
  flex-direction: row;
  align-items: center;
  text-align: left;
  gap: var(--spacing-md);
  height: 100%;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--primary-color);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.card-icon {
  font-size: 2rem;
  background: var(--glass-bg);
  width: 60px;
  height: 60px;
  min-width: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  margin-bottom: 0;
}

.card-content {
  flex: 1;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-color);
}

.card-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* .btn style removed to fix visibility issues */

/* Section Headers */
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-title:first-of-type {
  margin-top: 0;
}

/* Tool Specific Layout */
.tool-container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.back-link {
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.back-link:hover {
  color: var(--text-color);
}

.back-link svg {
  margin-right: var(--spacing-xs);
}

.text-center {
  text-align: center;
}

/* New Layout Styles */
.layout-grid {
  display: grid;
  grid-template-columns: 240px 1fr 240px;
  gap: var(--spacing-lg);
  align-items: start;
}

.sidebar-left,
.sidebar-right {
  position: sticky;
  top: var(--spacing-lg);
}

.sidebar-nav {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  backdrop-filter: blur(12px);
}

.nav-list {
  list-style: none;
}

.nav-item {
  margin-bottom: var(--spacing-xs);
}

.nav-link {
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.nav-link:hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary-color);
}

.sidebar-right-content {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  backdrop-filter: blur(12px);
  text-align: center;
}

/* Responsive Layout */
@media (max-width: 1024px) {
  .layout-grid {
    grid-template-columns: 200px 1fr;
  }

  .sidebar-right {
    display: none;
  }
}

@media (max-width: 768px) {
  .layout-grid {
    grid-template-columns: 1fr;
  }

  .sidebar-left {
    display: none;
    /* Or make it a hamburger menu in future */
  }
}