:root {
  --bg-0: #070910;
  --bg-1: #120d26;
  --ink: #f4f7ff;
  --ink-soft: #b8c2de;
  --line: rgba(255, 255, 255, 0.16);
  --accent-blue: #1fd8ff;
  --accent-red: #ff2a3a;
  --accent-purple: #a03cff;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--ink);
  font-family: "Space Mono", "Courier New", monospace;
  background:
    radial-gradient(circle at 16% 12%, rgba(22, 175, 255, 0.36), transparent 48%),
    radial-gradient(circle at 58% 48%, rgba(255, 46, 56, 0.12), transparent 42%),
    radial-gradient(circle at 82% 24%, rgba(160, 72, 255, 0.22), transparent 48%),
    linear-gradient(135deg, var(--bg-0) 0%, var(--bg-1) 100%);
}

.app-shell {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 1.1rem;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 1rem;
}

.hud {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  background: linear-gradient(170deg, rgba(14, 21, 44, 0.92), rgba(20, 14, 35, 0.86));
  backdrop-filter: blur(6px);
}

.eyebrow {
  margin: 0;
  color: var(--ink-soft);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

h1 {
  margin: 0.55rem 0 0;
  font-family: "Unbounded", sans-serif;
  font-size: clamp(1.15rem, 3vw, 1.42rem);
  line-height: 1.28;
}

.hint {
  margin: 0.8rem 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.45;
}

.controls {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

button {
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.06));
  color: #f7fbff;
  font-family: "Space Mono", monospace;
  font-size: 0.78rem;
  padding: 0.54rem 0.9rem;
  cursor: pointer;
}

button:hover {
  transform: translateY(-1px);
}

.status {
  margin: 0.9rem 0 0;
  padding: 0.56rem 0.68rem;
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  color: #dce5ff;
  background: rgba(10, 20, 42, 0.48);
  font-size: 0.8rem;
}

.env-hint {
  margin: 0.6rem 0 0;
  color: #ffd6df;
  font-size: 0.75rem;
  line-height: 1.38;
}

.tune-panel {
  margin-top: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  padding: 0.62rem 0.68rem;
  background: rgba(6, 11, 25, 0.45);
}

.tune-title {
  margin: 0.3rem 0 0.4rem;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #adc2ef;
}

.tune-title + .tune-row {
  margin-top: 0;
}

.tune-row,
.toggle-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.74rem;
  color: #d8e0f2;
}

.tune-row + .tune-row,
.tune-row + .toggle-row,
.toggle-row + .tune-title,
.tune-row + .tune-title {
  margin-top: 0.5rem;
}

.tune-row input[type="range"] {
  width: 100%;
}

.toggle-row {
  grid-template-columns: auto 1fr;
}

.stage {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  width: min(780px, 100%);
  justify-self: center;
  aspect-ratio: 1 / 1;
  background: #03050c;
}

video,
canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

video {
  opacity: 0;
  pointer-events: none;
}

.scanline {
  pointer-events: none;
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.03) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  background-size: 100% 5px;
  mix-blend-mode: screen;
}

.phase-callout {
  position: absolute;
  left: 50%;
  top: 9%;
  transform: translate(-50%, -35%) scale(0.94);
  opacity: 0;
  pointer-events: none;
  z-index: 8;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(2, 7, 18, 0.56);
  color: #f7fbff;
  font-family: "Unbounded", "Space Mono", sans-serif;
  font-size: clamp(0.72rem, 2.2vw, 0.92rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.35);
  transition: opacity 170ms ease, transform 170ms ease;
}

.phase-callout.show {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
}

.phase-callout.blue {
  border-color: rgba(86, 236, 255, 0.97);
  box-shadow: 0 0 30px rgba(25, 212, 255, 0.68);
}

.phase-callout.red {
  border-color: rgba(255, 96, 114, 0.97);
  box-shadow: 0 0 28px rgba(255, 34, 61, 0.62);
}

.phase-callout.purple {
  border-color: rgba(188, 110, 255, 0.96);
  box-shadow: 0 0 30px rgba(145, 56, 255, 0.62);
}

@media (max-width: 920px) {
  .app-shell {
    grid-template-columns: 1fr;
  }
}