/* CRT outline — solid-block SVG; mark motion is time-driven in assets/phosphor.js (v5) */
:root {
  --bg: #000000;
  --mark: #3de0ff;
  --mark-glow-a: rgba(61, 224, 255, 0.9);
  --mark-glow-b: rgba(61, 224, 255, 0.5);
  --footer: #3de0ff;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--mark);
  font-family: "Courier New", Courier, ui-monospace, monospace;
  overflow: hidden;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  position: relative;
}

.stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem 4.5rem;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.mark-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  will-change: transform;
}

.mark {
  display: block;
  width: min(70vw, 420px);
  height: auto;
  max-height: min(52vh, 520px);
  color: var(--mark);
  filter:
    drop-shadow(0 0 8px var(--mark-glow-a))
    drop-shadow(0 0 20px var(--mark-glow-b));
  shape-rendering: crispEdges;
  user-select: none;
  will-change: filter, opacity, color;
}

.mark--wide {
  width: min(88vw, 640px);
  max-height: min(40vh, 320px);
}

.scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.14;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    rgba(61, 224, 255, 0.55) 3px,
    rgba(61, 224, 255, 0.55) 4px
  );
  background-size: 100% 8px;
  mix-blend-mode: screen;
}

@media (prefers-reduced-motion: reduce) {
  .scanlines { opacity: 0.1; }
  .mark { opacity: 1; color: #3de0ff; }
}

footer {
  position: fixed;
  bottom: 1.25rem;
  left: 0;
  right: 0;
  text-align: center;
  z-index: 4;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

footer a {
  color: var(--footer);
  text-decoration: none;
  filter: drop-shadow(0 0 6px var(--mark-glow-a));
  opacity: 0.85;
  transition: opacity 0.25s ease;
}

footer a:hover { opacity: 1; }

.nf {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  z-index: 1;
  position: relative;
  padding: 2rem;
}

.nf .code {
  font-size: clamp(1.5rem, 6vw, 2.5rem);
  letter-spacing: 0.2em;
  color: var(--mark);
  filter:
    drop-shadow(0 0 6px var(--mark-glow-a))
    drop-shadow(0 0 14px var(--mark-glow-b));
}

.nf p {
  font-size: 0.85rem;
  opacity: 0.8;
  letter-spacing: 0.12em;
}