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

:root {
  --accent: #3b82f6;
  --accent-bg: rgba(30, 58, 95, 0.15);
  --accent-border: rgba(59, 130, 246, 0.35);
  --accent-hover-bg: rgba(29, 78, 137, 0.25);
  --accent-glow-strong: rgba(59, 130, 246, 0.4);
  --accent-glow-soft: rgba(59, 130, 246, 0.15);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #0a0a0a;
  color: #e0e0e0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  gap: 2rem;
}

h1 {
  font-size: 2.4rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.02em;
  text-align: center;
}

h1 span {
  color: var(--accent);
}

.cards {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 280px;
  height: 180px;
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  border-radius: 16px;
  text-decoration: none;
  color: #e0e0e0;
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-align: center;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease,
    background 0.25s ease;
}

.card:hover {
  transform: translateY(-4px) scale(1.03);
  border-color: var(--accent);
  background: var(--accent-hover-bg);
  box-shadow:
    0 0 24px var(--accent-glow-strong),
    0 0 48px var(--accent-glow-soft);
}

.card:active {
  transform: translateY(-1px) scale(1);
}

.card-icon {
  font-size: 2.8rem;
  margin-bottom: 0.6rem;
}

.back-link {
  position: fixed;
  top: 1.5rem;
  left: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: #9ca3af;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease;
}

.back-link:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-bg);
}