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

:root {
  --bg: #0f0f0f;
  --surface: #1a1a1a;
  --surface-hover: #242424;
  --border: #2a2a2a;
  --border-hover: #3a3a3a;
  --text: #e8e8e8;
  --text-secondary: #888;
  --accent: #6c9eff;
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 480px;
  width: 100%;
}

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

h1 {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.tagline {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.card-stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}

.card:hover {
  background: var(--surface-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.card:active {
  transform: translateY(0);
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--border);
  color: var(--accent);
  flex-shrink: 0;
}

.card-content {
  flex: 1;
  min-width: 0;
}

.card-title {
  display: block;
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 0.15rem;
}

.card-desc {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-arrow {
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: transform 0.2s, color 0.2s;
}

.card:hover .card-arrow {
  transform: translateX(3px);
  color: var(--accent);
}

footer {
  text-align: center;
  margin-top: 3rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.4rem;
  }

  .card {
    padding: 0.85rem 1rem;
  }

  .card-icon {
    width: 40px;
    height: 40px;
  }

  .card-desc {
    white-space: normal;
  }
}