:root {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-primary: #2454ff;
  --color-text: #1c1f26;
  --color-text-muted: #5b6270;
  --color-border: #e1e3e8;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

.portal-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  text-align: center;
}

.portal-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
  font-weight: 600;
}

.portal-header p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
}

.app-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.15s ease;
}

.app-card:hover,
.app-card:focus-visible {
  border-color: var(--color-primary);
}

.app-card .icon {
  font-size: 1.75rem;
  line-height: 1;
}

.app-card h2 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.app-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.empty-state {
  text-align: center;
  color: var(--color-text-muted);
  padding: 3rem 1rem;
}

.portal-footer {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  padding: 1.5rem;
}