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

/* Theme tokens (always dark — Matrix theme) */
:root {
  --bg: #0a0a0a;
  --fg: #eaeaea;
  --muted: #9a9a9a;
  --accent: #00ff66;
  --card-bg: rgba(10, 12, 10, 0.62);
  --card-border: rgba(0, 255, 102, 0.18);
  --overlay: rgba(0, 0, 0, 0.55);
}

/* Base */
html {
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--overlay), var(--overlay)),
    url("matrix-bg.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

/* Layout — content card over the matrix */
main {
  max-width: 640px;
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 2.5rem;
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

/* Profile header — avatar + name side by side */
.profile {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}

.avatar {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px rgba(0, 255, 102, 0.12), 0 8px 20px rgba(0, 0, 0, 0.4);
}

.name-block {
  min-width: 0;
}

/* Typography */
h1 {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
  line-height: 1.15;
}

.tagline {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.4;
}

.bio {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
}

/* Links row */
.links {
  margin-bottom: 2rem;
}

.links a {
  color: var(--fg);
  text-decoration: none;
  transition: color 120ms ease;
}

.links a:hover,
.links a:focus-visible {
  color: var(--accent);
  text-decoration: underline;
}

.links .sep {
  color: var(--muted);
  margin: 0 0.75rem;
}

/* Footer */
footer {
  color: var(--muted);
  font-size: 0.85rem;
}

/* Mobile */
@media (max-width: 480px) {
  body {
    padding: 1.25rem;
    /* fixed backgrounds can stutter on mobile — use scroll */
    background-attachment: scroll;
  }
  main {
    padding: 1.75rem;
    border-radius: 10px;
  }
  .profile {
    gap: 1rem;
    margin-bottom: 1.5rem;
  }
  .avatar {
    width: 88px;
    height: 88px;
  }
  h1 {
    font-size: 1.5rem;
  }
  .tagline {
    font-size: 0.85rem;
  }
  .bio {
    margin-bottom: 1.5rem;
  }
  .links {
    margin-bottom: 1.5rem;
  }
  .links .sep {
    margin: 0 0.5rem;
  }
}