:root {
  --background: #000000;
  --foreground: #ffffff;
  --primary: #ffffff;
  --secondary: #cccccc;
  --muted: #333333;
  --ring: #ffffff;
}

.light {
  --background: #ffffff;
  --foreground: #000000;
  --primary: #000000;
  --secondary: #666666;
  --muted: #f5f5f5;
  --ring: #000000;
}

body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1rem;
}

header {
  position: sticky;
  top: 0;
  background-color: var(--background);
  border-bottom: 1px solid var(--muted);
  z-index: 100;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
}

nav a {
  color: var(--foreground);
  text-decoration: none;
  margin: 0 1rem;
  font-weight: 500;
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--foreground);
  cursor: pointer;
  font-size: 0.9rem;
}

.card {
  background-color: var(--background);
  border: 1px solid var(--muted);
  border-radius: 0.5rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  padding: 1.5rem;
  margin: 1rem 0;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.25rem;
  cursor: pointer;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.2s;
}

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

.btn-secondary {
  background-color: var(--secondary);
  color: var(--background);
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.table th, .table td {
  border: 1px solid var(--muted);
  padding: 0.75rem;
  text-align: left;
}

.table tbody tr:nth-child(even) {
  background-color: var(--muted);
}

.breadcrumbs {
  font-size: 0.875rem;
  color: var(--secondary);
  margin-bottom: 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
}

.btn:focus, nav a:focus, .theme-toggle:focus {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

footer {
  background-color: var(--muted);
  padding: 2rem 1rem;
  margin-top: 2rem;
  text-align: center;
  color: var(--foreground);
}

footer a {
  color: var(--foreground);
  text-decoration: none;
  margin: 0 1rem;
}

.company-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.company-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 1rem;
  padding: 1.25rem;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.company-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.28);
  box-shadow: 0 12px 28px rgba(0,0,0,0.35);
}

.company-card h3 {
  margin: 0 0 1rem 0;
  font-size: 1.1rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.company-card .btn {
  align-self: flex-start;
  border-radius: 0.65rem;
}