:root {
  color-scheme: dark;
  --bg: #090909;
  --panel: rgba(18, 18, 18, 0.9);
  --panel-border: rgba(255, 255, 255, 0.1);
  --text: #f3efe7;
  --muted: #b8b2a8;
  --accent: #e3bf74;
  --accent-strong: #f5d38a;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

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

body {
  background:
    radial-gradient(circle at top, rgba(227, 191, 116, 0.12), transparent 38%),
    radial-gradient(circle at bottom right, rgba(255, 255, 255, 0.06), transparent 30%),
    var(--bg);
  color: var(--text);
  font-family: "Trebuchet MS", "Lucida Grande", sans-serif;
}

.display-stage {
  width: 100vw;
  height: 100vh;
  display: block;
  overflow: hidden;
}

.display-image {
  display: block;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  animation: breathe 4s ease-in-out infinite;
}

.display-image.is-hidden {
  opacity: 0;
}

.audio-unlock {
  position: fixed;
  left: 24px;
  bottom: 24px;
  z-index: 10;
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  padding: 12px 18px;
  background: rgba(0, 0, 0, 0.55);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  backdrop-filter: blur(12px);
}

.audio-unlock.is-hidden {
  display: none;
}

.control-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
}

.control-panel {
  width: min(720px, 100%);
  padding: 36px;
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  color: var(--accent);
}

.control-panel h1 {
  margin: 0;
  font-size: clamp(2.8rem, 7vw, 5rem);
  line-height: 1;
}

.description {
  margin: 16px 0 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.button-row {
  display: flex;
  gap: 16px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.control-button {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 15px 22px;
  min-width: 180px;
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}

.control-button:hover,
.control-button:focus-visible {
  transform: translateY(-1px);
}

.control-button.primary {
  color: #140f03;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
}

.control-button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--panel-border);
}

.control-button.danger {
  color: #fff4f4;
  background: linear-gradient(135deg, #8f2b2b, #d45a5a);
}

@keyframes breathe {
  0%, 100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.01);
  }
}

@media (max-width: 640px) {
  .control-panel {
    padding: 24px;
  }

  .control-button {
    width: 100%;
  }

  .button-row {
    flex-direction: column;
  }
}