/* procarton link-in-bio — self-contained styles (extracted from reference) */
:root {
  --background: #0a0a0a;
  --surface: #111;
  --surface-2: #161616;
  --foreground: #ededed;
  --muted: #8a8a8a;
  --border: #ffffff14;
  --accent: #8b5cf6;
  --accent-2: #22d3ee;
  --glow: 0.6;
  --grid-opacity: 0.5;
  --font-sans: "Inter", "Inter Variable", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html.antialiased {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html, body { height: 100%; }

body {
  margin: 0;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
}

/* layout */
main {
  position: relative;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  max-width: 64rem; /* max-w-5xl */
  flex: 1 1 0%;
  padding: 2.5rem 1rem; /* px-4 py-10 */
}
@media (min-width: 640px) {
  main { padding: 4rem 1.5rem; } /* sm:px-6 sm:py-16 */
}

/* fixed background layer */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -10;
  overflow: hidden;
}
.bg-layer canvas { position: absolute; inset: 0; }

.glow {
  position: absolute;
  border-radius: 9999px;
}
.glow-1 {
  top: -10rem; left: 50%; transform: translateX(-50%);
  height: 500px; width: 800px; filter: blur(120px);
  background: rgba(255,255,255,calc(var(--glow) * 0.07));
  animation: pulse 8s cubic-bezier(.4,0,.6,1) infinite;
}
.glow-2 {
  top: 33.333%; left: -10rem;
  height: 400px; width: 400px; filter: blur(110px);
  background: rgba(200,200,205,calc(var(--glow) * 0.05));
  animation: pulse 11s cubic-bezier(.4,0,.6,1) infinite;
  animation-delay: 2s;
}
.glow-3 {
  bottom: 0; right: -8rem;
  height: 450px; width: 450px; filter: blur(120px);
  background: rgba(255,255,255,calc(var(--glow) * 0.045));
  animation: pulse 9s cubic-bezier(.4,0,.6,1) infinite;
  animation-delay: 4s;
}
.vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 120% 80% at 50% 0%, transparent 40%, rgba(0,0,0,0.55) 100%);
}

@keyframes pulse { 50% { opacity: .5; } }

/* header / subtitle */
.header { margin-bottom: 2rem; text-align: center; }
@media (min-width: 640px) { .header { margin-bottom: 2.5rem; } }
.subtitle {
  margin: 1rem auto 0;
  max-width: 42rem;
  text-wrap: pretty;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--muted);
}
@media (min-width: 640px) { .subtitle { font-size: 1.125rem; } }
@media (min-width: 1024px) { .subtitle { font-size: 1.25rem; } }

/* logo */
.logo-wrap {
  position: relative;
  margin: 0 auto;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-width: 50%;
}
.logo-wrap img {
  position: absolute;
  inset: 0;
  height: 100%;
  width: 100%;
  object-fit: contain;
  color: transparent;
}

/* links grid */
.links-wrap { margin-top: 2.5rem; }
@media (min-width: 640px) { .links-wrap { margin-top: 3.5rem; } }
.links-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px) {
  .links-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }
}

/* banner card — verbatim from reference */
.banner-card {
  border: 1px solid var(--border);
  will-change: transform;
  background: linear-gradient(#ffffff0a, #ffffff03);
  border-radius: 1.25rem;
  transition: transform .45s cubic-bezier(.22,1,.36,1), border-color .45s, box-shadow .45s;
  position: relative;
  overflow: hidden;
  display: block;
  text-decoration: none;
  color: inherit;
}
.banner-card:hover { border-color: var(--accent); transform: scale(1.04) translateY(-2px); }
.banner-card:hover { border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.banner-card:hover {
  box-shadow: 0 0 0 1px var(--accent), 0 10px 40px -10px var(--accent), 0 20px 80px -20px var(--accent-2);
}
.banner-card:hover {
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--accent) calc(var(--glow) * 30%), transparent),
    0 10px 40px -10px color-mix(in srgb, var(--accent) calc(var(--glow) * 55%), transparent),
    0 20px 80px -20px color-mix(in srgb, var(--accent-2) calc(var(--glow) * 40%), transparent);
}
.banner-card:active { transition-duration: .1s; transform: scale(.99); }
.banner-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.banner-card .inner { padding: 1.25rem; }
@media (min-width: 640px) { .banner-card .inner { padding: 1.5rem; } }

.banner-card h3 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -.025em;
}
@media (min-width: 640px) { .banner-card h3 { font-size: 1.25rem; } }

@media (prefers-reduced-motion: reduce) {
  .glow-1, .glow-2, .glow-3 { animation: none; }
  .banner-card { transition: none; }
}