@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&display=swap');

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

:root {
  --bg: #000000;
  --cyan: #ffffff;
  --gold: #ffffff;
  --dim: #333333;
  --mid: #666666;
  --bright: #aaaaaa;
  --panel-h: 72px;
  --font: 'Space Mono', monospace;
}

html,
body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: var(--bg);
}

body {
  display: flex;
  flex-direction: column;
  cursor: crosshair;
}

/* ── Title ─────────────────────────────────────────── */

#title {
  position: fixed;
  top: 14px;
  left: 18px;
  font-family: var(--font);
  font-size: 10px;
  color: var(--mid);
  letter-spacing: 0.14em;
  z-index: 10;
  pointer-events: none;
  user-select: none;
}

#hint {
  position: fixed;
  top: 14px;
  right: 18px;
  font-family: var(--font);
  font-size: 9px;
  color: var(--mid);
  letter-spacing: 0.18em;
  z-index: 10;
  pointer-events: none;
  user-select: none;
  opacity: 0;
  animation: fadeHint 6s ease forwards;
}

@keyframes fadeHint {
  0% {
    opacity: 0;
  }

  20% {
    opacity: 1;
  }

  70% {
    opacity: 1;
  }

  100% {
    opacity: 0;
  }
}

/* ── Canvas ─────────────────────────────────────────── */

canvas {
  display: block;
  width: 100vw;
  height: calc(100vh - var(--panel-h));
  flex-shrink: 0;
  /* smooth bilinear upscaling — gives organic look */
}

/* ── Panel ──────────────────────────────────────────── */

#panel {
  flex-shrink: 0;
  height: var(--panel-h);
  background: #000000;
  border-top: 1px solid #222;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
}

.control-row {
  display: flex;
  align-items: center;
  gap: 28px;
  width: 100%;
  max-width: 920px;
}

/* ── Sliders ────────────────────────────────────────── */

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 150px;
}

.label {
  font-family: var(--font);
  font-size: 9px;
  color: var(--mid);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.label em {
  font-style: normal;
  color: var(--bright);
  margin-left: 8px;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 1px;
  background: #333;
  border-radius: 0;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 8px;
  height: 8px;
  border-radius: 0;
  background: #fff;
  box-shadow: none;
  cursor: pointer;
  transition: transform 0.15s ease;
}

input[type="range"]:hover::-webkit-slider-thumb {
  transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
  width: 8px;
  height: 8px;
  border-radius: 0;
  background: #fff;
  box-shadow: none;
  border: none;
  cursor: pointer;
}

/* ── Presets ────────────────────────────────────────── */

.presets {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.preset-btn {
  font-family: var(--font);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--mid);
  background: transparent;
  border: 1px solid #333;
  border-radius: 0;
  padding: 4px 9px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  text-transform: lowercase;
  white-space: nowrap;
}

.preset-btn:hover {
  color: #fff;
  border-color: #666;
  box-shadow: none;
}

.preset-btn.active {
  color: #fff;
  border-color: #fff;
}

/* ── Reset ──────────────────────────────────────────── */

#reset-btn {
  font-family: var(--font);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--mid);
  background: transparent;
  border: 1px solid #333;
  border-radius: 0;
  padding: 4px 12px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  text-transform: lowercase;
  white-space: nowrap;
  margin-left: auto;
}

#reset-btn:hover {
  color: #fff;
  border-color: #fff;
  box-shadow: none;
}