html, body {
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  background-color: #000;
  color: #fff;
  font-family: "VT323", monospace;
  font-weight: 400;
  font-style: normal;
  font-size: 32px;
}

h1, h2 {
  font-family: "Major Mono Display", monospace;
}

h1 {
  font-size: clamp(28px, 12vw, 80px);
}

h2 {
  font-size: clamp(22px, 8vw, 48px);
}

a {
  color: #0cc;
  text-decoration: none;
  transition: color 0.3s;
}

a:visited {
  color: #c0c;
}

a:hover {
  color: #fff;
}

#shaderBg {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: 0;
  pointer-events: none;
}

#fireflies {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: 1;
  pointer-events: none;
}

.page {
  position: fixed;
  width: 200vw;
  height: 200vh;
  transform: translate(-100vw, 0);
  z-index: 2;
}

.quadrant {
  position: absolute;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px;
  box-sizing: border-box;
  overflow: hidden;
}

.quadrant-content {
  background: rgba(0, 0, 0, 0.5);
  border-radius: 16px;
  padding: 72px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  max-width: calc(100vw - 64px);
  max-height: calc(100vh - 64px);
  overflow: auto;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.q-top-left     { top: 0;     left: 0;     }
.q-top-right    { top: 0;     left: 100vw; }
.q-bottom-left  { top: 100vh; left: 0;     }
.q-bottom-right { top: 100vh; left: 100vw; }

.placeholder {
  opacity: 0.3;
  font-size: 24px;
}

.nav-marker {
  position: fixed;
  width: 120px;
  height: 120px;
  z-index: 10;
  user-select: none;
  cursor: pointer;
  transition: opacity 0.3s;
}

.nav-marker::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background 0.3s;
}

.nav-marker:hover::before {
  background: rgba(0, 0, 0, 0.6);
}

.nav-marker.hidden {
  opacity: 0;
  pointer-events: none;
}

.nav-marker span {
  position: absolute;
  font-size: 40px;
  color: #0cc;
  font-weight: bold;
  opacity: 0.7;
  transition: opacity 0.3s;
  text-shadow: 0 0 8px rgba(0, 204, 204, 0.6);
}

.nav-marker:hover span { opacity: 1; }

.nav-marker:focus-visible {
  outline: 2px solid #0cc;
  outline-offset: 2px;
}

.nav-tl { top: 0; left: 0; }
.nav-tl::before { clip-path: polygon(0 0, 100% 0, 0 100%); }
.nav-tl span { top: 10px; left: 10px; animation: point-tl 1.5s ease-in-out infinite; }

.nav-tr { top: 0; right: 0; }
.nav-tr::before { clip-path: polygon(0 0, 100% 0, 100% 100%); }
.nav-tr span { top: 10px; right: 10px; animation: point-tr 1.5s ease-in-out infinite; }

.nav-bl { bottom: 0; left: 0; }
.nav-bl::before { clip-path: polygon(0 0, 0 100%, 100% 100%); }
.nav-bl span { bottom: 10px; left: 10px; animation: point-bl 1.5s ease-in-out infinite; }

.nav-br { bottom: 0; right: 0; }
.nav-br::before { clip-path: polygon(100% 0, 0 100%, 100% 100%); }
.nav-br span { bottom: 10px; right: 10px; animation: point-br 1.5s ease-in-out infinite; }

@keyframes point-tl { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(-3px, -3px); } }
@keyframes point-tr { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(3px, -3px); } }
@keyframes point-bl { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(-3px, 3px); } }
@keyframes point-br { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(3px, 3px); } }

/* ── BitBrush widget (TL quadrant) ─────────────────────────────── */
.bitbrush-widget-content {
  padding: 24px 20px;
}

#bitbrush-container {
  position: relative;
  width: 100%;
  max-width: 420px;
}

@media (max-width: 600px) {
  .quadrant-content {
    padding: 24px;
    max-width: calc(100vw - 48px);
    max-height: calc(100vh - 48px);
  }

  .bitbrush-widget-content {
    padding: 16px 12px;
  }
  .nav-marker {
    width: 64px;
    height: 64px;
  }
  .nav-marker span {
    font-size: 22px;
  }
  .nav-tl span { top: 6px; left: 6px; }
  .nav-tr span { top: 6px; right: 6px; }
  .nav-bl span { bottom: 6px; left: 6px; }
  .nav-br span { bottom: 6px; right: 6px; }
}

@media (hover: none) {
  .quadrant-content {
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .nav-marker::before {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}