@font-face {
  font-family: "JetBrains Mono";
  src: url("/assets/fonts/JetBrainsMono-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/assets/fonts/JetBrainsMono-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #000;
  --fg: #fff;
  --dim: #8c8c8c;
  --faint: #777;
  --ascii: #4a4a4a;
  --gutter: clamp(1.25rem, 0.75rem + 2.5vw, 3rem);
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); }

body {
  min-height: 100svh;
  color: var(--fg);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;

  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

::selection { background: var(--fg); color: var(--bg); }

.ascii {
  position: fixed;
  inset: 0;
  margin: 0;
  overflow: hidden;
  font: 400 12px/12px var(--mono);
  white-space: pre;
  user-select: none;
  -webkit-user-select: none;
}
.ascii-bg {
  z-index: 0;
  color: var(--ascii);
  cursor: grab;
  touch-action: none;
  opacity: 0;
  transition: opacity 1.2s ease, color 0.6s ease-out;
}
.ascii-bg.ready { opacity: 1; }
.ascii-bg.dragging { cursor: grabbing; }
.ascii-bg.snap { color: #9a9a9a; transition: opacity 1.2s ease, color 0s; }

@property --glow-r {
  syntax: "<length>";
  inherits: false;
  initial-value: 0px;
}
.ascii-glow {
  z-index: 0;
  color: var(--fg);
  text-shadow: 0 0 6px rgba(255, 255, 255, 0.55);
  pointer-events: none;
  transition: --glow-r 0.25s ease-out;
  -webkit-mask-image: radial-gradient(circle at var(--gx, -999px) var(--gy, -999px), #000 calc(var(--glow-r, 0px) * 0.15), transparent var(--glow-r, 0px));
  mask-image: radial-gradient(circle at var(--gx, -999px) var(--gy, -999px), #000 calc(var(--glow-r, 0px) * 0.15), transparent var(--glow-r, 0px));
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
}
.ascii-glow.on { --glow-r: 150px; }

main {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100svh;
  width: max-content;
  max-width: 100%;
  padding:
    max(var(--gutter), env(safe-area-inset-top))
    max(var(--gutter), env(safe-area-inset-right))
    max(var(--gutter), env(safe-area-inset-bottom))
    max(var(--gutter), env(safe-area-inset-left));
}

.title {
  margin: 0 0 2.25rem;
  font-family: var(--mono);
  font-weight: 700;

  font-size: min(14px, calc((100vw - 2 * var(--gutter)) / 37));
  line-height: 1;
  white-space: pre;
}

h1 {
  margin: 0 0 2rem;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.3;
}

.label {
  margin: 0 0 0.5rem;
  font-size: inherit;
  font-weight: 400;
  color: var(--dim);
}

.about p {
  margin: 0 0 0.15rem 2ch;
}

strong { font-weight: 700; }

.caret {
  display: inline-block;
  width: 0.6em;
  height: 1.15em;
  margin-left: 0.25em;
  vertical-align: -0.2em;
  background: var(--fg);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hint {
  margin: auto 0 0;
  padding-top: 3rem;
  font-size: 12px;
  color: var(--faint);
}

.lock-toggle {
  margin: 0;
  padding: 0 0.1em;
  border: 0;
  background: none;
  font: inherit;
  color: var(--dim);
  cursor: pointer;
}
.lock-toggle:hover { color: var(--fg); }
.lock-toggle:focus-visible,
a:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 3px;
}

.term p { margin: 0 0 0.35rem; }
.term .prompt { color: var(--dim); }
.term .err { color: var(--dim); }
.term .note { color: var(--faint); margin-left: 1ch; }
a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
}
a:hover { text-decoration-thickness: 2px; }

footer {
  margin-top: 0.75rem;
  font-size: 12px;
  color: var(--faint);
}
.copyleft {
  display: inline-block;
  transform: scaleX(-1);
}

@media (prefers-reduced-motion: reduce) {
  .caret { animation: none; }
  .ascii-bg, .ascii-glow { transition: none; }
}