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

:root {
  --bg: #0f1117;
  --bg-card: #161923;
  --text: #e8eaf0;
  --text-muted: #8b90a0;
  --accent: #2dd4bf;
  --accent-glow: rgba(45, 212, 191, 0.15);
  --border: #252836;
}

body {
  background-color: var(--bg);
  background-image: radial-gradient(rgba(45, 212, 191, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

main {
  width: 100%;
  max-width: 580px;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

/* Header */

header h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1.1;
  user-select: none;
  cursor: default;
}

header .tagline {
  margin-top: 0.75rem;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 0.01em;
}

/* Platforms */

.platforms ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.platforms li {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  padding: 0.85rem 1.1rem;
  transition: background 0.2s, box-shadow 0.2s;
}

.platforms li:hover {
  background: #1c2030;
  box-shadow: 0 0 0 1px var(--border);
}

.platforms li div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.platforms li div span:first-child {
  font-size: 0.95rem;
  color: var(--text);
}

.platforms .tech {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.platforms svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--accent);
  flex-shrink: 0;
}

/* Footer */

footer {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

footer a {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 0.45rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

footer a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-glow);
}

footer svg {
  width: 1.1rem;
  height: 1.1rem;
}

/* Easter egg toast */

#easter-toast {
  position: fixed;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(0.5rem);
  background: rgba(40, 44, 58, 0.95);
  color: var(--text);
  padding: 0.55rem 1.1rem;
  border-radius: 4px;
  font-size: 0.875rem;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
  white-space: nowrap;
  z-index: 100;
}

#easter-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Responsive */

@media (max-width: 480px) {
  body {
    align-items: flex-start;
    padding: 2.5rem 1.5rem;
  }
}