* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: linear-gradient(#3d8fd0, #c4e6f6);
}

body {
  font-family: "Avenir Next", Avenir, "Segoe UI", "Helvetica Neue", "Noto Sans", system-ui, -apple-system, Arial, sans-serif;
  color: #f6fbfd;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

#scene {
  position: fixed;
  inset: 0;
  display: block;
  cursor: grab;
  touch-action: none;
  opacity: 0;
  transition: opacity 1.2s ease;
}
#scene.ready { opacity: 1; }
#scene.dragging { cursor: grabbing; }

#labels {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.tag {
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  will-change: transform, opacity;
}
.tag-inner {
  position: absolute;
  left: 0;
  bottom: 0;
  transform: translate(-50%, 4px);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.tag-text {
  display: flex;
  align-items: center;
  gap: 0.55em;
  font-size: clamp(10px, 0.72vw, 13.5px);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  white-space: nowrap;
  padding: 0.5em 0.9em 0.46em 0.75em;
  border-radius: 999px;
  background: rgba(7, 28, 45, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 6px 18px rgba(0, 18, 36, 0.18);
}
.tag-text::before {
  content: "";
  width: 0.55em;
  height: 0.55em;
  border-radius: 50%;
  background: var(--c);
  box-shadow: 0 0 8px var(--c);
}
.tag-line {
  width: 1px;
  height: clamp(14px, 2.1vh, 26px);
  background: linear-gradient(rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.35));
}
.tag-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.28), 0 0 10px var(--c);
}

.title {
  position: fixed;
  left: clamp(20px, 3vw, 58px);
  top: clamp(16px, 3.4vh, 46px);
  pointer-events: none;
  text-shadow: 0 2px 18px rgba(8, 44, 84, 0.35);
}
.eyebrow {
  font-size: clamp(10px, 0.72vw, 13px);
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  opacity: 0.92;
}
.title h1 {
  margin: 0.14em 0 0;
  font-size: clamp(30px, 3.1vw, 58px);
  font-weight: 300;
  letter-spacing: 0.01em;
  line-height: 1.05;
}

.panel {
  position: fixed;
  left: clamp(18px, 3vw, 58px);
  bottom: clamp(16px, 3.4vh, 46px);
  display: flex;
  flex-direction: column;
  gap: clamp(9px, 0.75vw, 15px);
  width: clamp(250px, 21vw, 410px);
  padding: clamp(14px, 1.15vw, 22px);
  background: rgba(7, 28, 45, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(0, 20, 40, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.panel-head {
  display: flex;
  align-items: center;
  gap: clamp(10px, 0.9vw, 18px);
}
.head-text { min-width: 0; }

.dial {
  width: clamp(62px, 4.9vw, 96px);
  height: clamp(62px, 4.9vw, 96px);
  flex: none;
  overflow: visible;
  cursor: pointer;
}
.dial-track { fill: none; stroke: rgba(255, 255, 255, 0.12); stroke-width: 7; }
.dial-arc { fill: none; stroke-width: 7; stroke-linecap: round; opacity: 0.35; transition: opacity 0.6s ease; }
.dial-arc.on { opacity: 1; }
.dial-tail { fill: none; stroke: rgba(255, 255, 255, 0.85); stroke-width: 2.2; stroke-linecap: round; }
.dial-knob { fill: #fff; stroke: rgba(7, 28, 45, 0.6); stroke-width: 2; filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.9)); }
.dial-num { fill: #fff; font-size: 22px; font-weight: 300; text-anchor: middle; dominant-baseline: middle; }
.dial-sub { fill: rgba(255, 255, 255, 0.6); font-size: 7.5px; font-weight: 600; letter-spacing: 0.18em; text-anchor: middle; }

.swap { animation: swap 0.7s ease; }
@keyframes swap {
  from { opacity: 0.2; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}
.kicker {
  font-size: clamp(9.5px, 0.64vw, 12px);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.62);
}
.kicker b { color: #fff; font-weight: 700; }
.panel h2 {
  margin: 0.12em 0 0;
  font-size: clamp(20px, 1.62vw, 31px);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.15;
  color: #fff;
  text-shadow: 0 0 22px color-mix(in srgb, var(--c, #fff) 55%, transparent);
}
.stage-text {
  margin: 0;
  font-size: clamp(12px, 0.8vw, 15px);
  line-height: 1.5;
  color: rgba(240, 248, 252, 0.9);
  min-height: 7.5em;
}
.legend {
  display: flex;
  align-items: center;
  gap: 0.7em;
  font-size: clamp(10px, 0.64vw, 12px);
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.72);
}
.legend i {
  flex: none;
  width: 0.75em;
  height: 0.75em;
  border-radius: 50%;
  background: #d9fbff;
  box-shadow: 0 0 8px 2px rgba(120, 235, 255, 0.9);
}
.chips { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.chip {
  font: inherit;
  font-size: clamp(9.5px, 0.62vw, 11.5px);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  padding: 0.45em 0.85em;
  cursor: pointer;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.chip:hover { background: rgba(255, 255, 255, 0.14); color: #fff; }
.chip.on {
  color: #0a2438;
  background: var(--c);
  border-color: transparent;
}

.controls {
  position: fixed;
  right: clamp(16px, 2.4vw, 46px);
  bottom: clamp(14px, 2.8vh, 40px);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}
.btns { display: flex; gap: 8px; }
.btn {
  font: inherit;
  font-size: clamp(11px, 0.7vw, 13px);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #fff;
  background: rgba(7, 28, 45, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 0.62em 1.15em;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background 0.3s, color 0.3s;
}
.btn:hover { background: rgba(7, 28, 45, 0.7); }
.btn.on { background: rgba(255, 255, 255, 0.92); color: #0b2a40; }
.keys {
  font-size: clamp(10px, 0.64vw, 12px);
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.85);
  text-shadow: 0 1px 8px rgba(0, 30, 60, 0.6);
}

body.clean .title,
body.clean .panel,
body.clean .controls,
body.clean #labels { display: none; }

.noscript {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  font-size: 18px;
}

@media (max-aspect-ratio: 5/4) {
  .panel { left: 10px; right: 10px; bottom: 10px; width: auto; gap: 8px; }
  .stage-text { min-height: 4.5em; }
  .chips, .legend, .keys { display: none; }
  .controls { top: 12px; bottom: auto; right: 12px; }
  .title { top: 60px; }
  .title h1 { font-size: 26px; }
}