:root {
  --fg: #cfd3dc;
  --dim: #6b7280;
  --line: #ffffff1a;
  --panel: #0c0d11e6;
  --accent: #00d1ff;
  --mono: "CaskaydiaMono Nerd Font", "JetBrains Mono", "DejaVu Sans Mono",
    ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html,
body {
  height: 100%;
  margin: 0;
  background: #000;
  color: var(--fg);
  font: 13px/1.5 var(--mono);
  overflow: hidden;
  overscroll-behavior: none;
}

#stage {
  display: block;
  width: 100vw;
  height: 100dvh;
  background: #000;
}

body.idle { cursor: none; }
body.idle #ui,
body.bare #ui { opacity: 0; pointer-events: none; }

#ui {
  position: fixed;
  inset: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

#status {
  position: absolute;
  left: 16px;
  bottom: 14px;
  display: flex;
  gap: 10px;
  align-items: baseline;
  color: var(--dim);
  letter-spacing: 0.06em;
  text-transform: lowercase;
  text-shadow: 0 1px 6px #000;
}
#effect-name { color: var(--fg); }
#effect-index { font-size: 11px; }

#cog {
  position: absolute;
  top: 14px;
  right: 16px;
  pointer-events: auto;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #0c0d1199;
  color: var(--dim);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
#cog:hover { color: var(--fg); border-color: #ffffff44; }

#panel {
  position: absolute;
  top: 14px;
  right: 16px;
  width: min(330px, calc(100vw - 32px));
  max-height: calc(100dvh - 28px);
  overflow: auto;
  pointer-events: auto;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 50px #000a;
}

#panel header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
#panel h1 {
  margin: 0;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--dim);
}
#close {
  border: 0;
  background: none;
  color: var(--dim);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 0 2px;
}
#close:hover { color: var(--fg); }

.row {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  align-items: center;
  gap: 10px;
  margin-bottom: 9px;
}
.row > span { color: var(--dim); font-size: 12px; }
.row output { color: var(--dim); font-size: 11px; min-width: 34px; text-align: right; }

select,
button {
  font: inherit;
  color: var(--fg);
  background: #15171d;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 5px 8px;
  cursor: pointer;
}
select { grid-column: 2 / -1; width: 100%; }
select:focus-visible,
button:focus-visible,
input:focus-visible { outline: 1px solid var(--accent); outline-offset: 1px; }

.buttons { grid-template-columns: 1fr 1fr; margin-top: 12px; }
.buttons button { grid-column: auto; }
.buttons button:hover { border-color: #ffffff44; }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 3px;
  background: #ffffff22;
  border-radius: 3px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

#keys {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 10px;
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  color: var(--dim);
}
#keys > div { display: flex; gap: 8px; }
#keys dt { color: var(--fg); min-width: 42px; }
#keys dd { margin: 0; }

#hint {
  margin: 12px 0 0;
  font-size: 11px;
  line-height: 1.6;
  color: var(--dim);
}
#hint code { color: #9aa2b1; }

@media (prefers-reduced-motion: reduce) {
  #ui { transition: none; }
}