/* Faderhead design tokens */
:root {
  /* Surfaces */
  --bg: #0c0c0f;
  --bg-1: #111116;
  --bg-2: #161620;
  --bg-3: #1d1d28;
  --border: #2a2a35;
  --border-strong: #3a3a48;

  /* Ink */
  --ink-1: #f0efea;
  --ink-2: #a8a8b2;
  --ink-3: #65656f;
  --ink-4: #3f3f48;

  /* Accent — teal from Faderverse / Into The Metadrome */
  --accent: #0d9488;
  --accent-bright: #14b8a6;
  --accent-glow: rgba(20, 184, 166, 0.45);
  --accent-soft: rgba(13, 148, 136, 0.12);

  /* Signal / warning */
  --amber: #d4a017;
  --red: #c54a3a;

  /* Type */
  --font-display: "Space Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

/* Reset for artboards */
.fh-artboard,
.fh-artboard * {
  box-sizing: border-box;
}
.fh-artboard {
  font-family: var(--font-display);
  font-feature-settings: "ss01", "ss02";
  color: var(--ink-1);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-synthesis: none;
}
.fh-artboard a {
  color: inherit;
  text-decoration: none;
}
.fh-artboard button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

/* Utility */
.mono { font-family: var(--font-mono); letter-spacing: 0.02em; }
.uppercase { text-transform: uppercase; letter-spacing: 0.14em; }
.hairline { border-top: 1px solid var(--border); }
.hairline-strong { border-top: 1px solid var(--border-strong); }

/* CRT scanline texture — used by Signal direction */
.fh-scanlines {
  position: absolute; inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.34) 0px,
    rgba(0, 0, 0, 0.34) 1px,
    transparent 1px,
    transparent 3px
  );
  opacity: 1;
}
.fh-vignette {
  position: absolute; inset: 0;
  pointer-events: none;
  background: radial-gradient(115% 85% at 50% 38%, transparent 48%, rgba(0,0,0,0.7) 100%);
}
.fh-noise {
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* Teal glow used by Signal */
.glow-teal {
  text-shadow:
    0 0 0.4em var(--accent-glow),
    0 0 1.2em rgba(20, 184, 166, 0.18);
}

/* Subtle blinking caret */
@keyframes fh-blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
.fh-caret {
  display: inline-block;
  width: 0.1em;
  height: 0.85em;
  background: var(--accent-bright);
  vertical-align: -0.08em;
  margin-left: 0.18em;
  animation: fh-blink 1.1s steps(1) infinite;
}

/* Sweep line (CRT trace) */
@keyframes fh-sweep {
  0%   { transform: translateY(-10%); opacity: 0; }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.6; }
  100% { transform: translateY(110%); opacity: 0; }
}
.fh-sweep {
  position: absolute; left: 0; right: 0; top: 0;
  height: 60px;
  background: linear-gradient(to bottom, transparent, rgba(20,184,166,0.10), transparent);
  pointer-events: none;
  animation: fh-sweep 7s linear infinite;
}

/* Number / metadata chips */
.fh-tag {
  display: inline-flex; align-items: center;
  gap: 0.4em;
  padding: 0.25em 0.55em;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: 2px;
}
.fh-tag-accent {
  color: var(--accent-bright);
  border-color: rgba(20,184,166,0.4);
  background: var(--accent-soft);
}

/* Striped placeholder for imagery */
.fh-placeholder {
  background:
    repeating-linear-gradient(135deg,
      rgba(255,255,255,0.04) 0 12px,
      transparent 12px 24px),
    var(--bg-2);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}