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

:root {
  --bg: #1a1a1a;
  --card-bg: #2a2a2a;
  --card-border: #3a3a3a;
  --card-hover-border: #555;
  --card-hover-bg: #313131;
  --text-primary: #e0e0e0;
  --header-text: #f0f0f0;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  padding: 2rem 1.5rem 3rem;
}

header {
  text-align: center;
  margin-bottom: 2.5rem;
}

header h1 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--header-text);
  letter-spacing: 0.04em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  max-width: 900px;
  margin: 0 auto;
}

.card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    transform 0.18s ease,
    box-shadow 0.18s ease;
  cursor: pointer;
}

.card:hover {
  background: var(--card-hover-bg);
  border-color: var(--card-hover-border);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
}

.card-icon img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.icon-initials {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.card-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  text-align: center;
}

@media (max-width: 640px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 400px) {
  .grid {
    grid-template-columns: 1fr;
  }
}