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

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  font-family: system-ui, -apple-system, sans-serif;
}

#stage {
  position: relative;
  width: 100%;
  height: 100%;
  background: #000;
  user-select: none;
  -webkit-user-select: none;
}

#video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
  transform: translateZ(0);
}

#hud-root {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 10;
}

#pro-hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 15;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 4px;
  padding: 8px;
}

#pro-hud.hidden {
  display: none;
}

.pro-slot {
  align-self: start;
  justify-self: start;
  min-width: 120px;
  padding: 6px 8px;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  color: #e8e8e6;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.pro-slot .label {
  opacity: 0.65;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pro-slot .value {
  font-size: 14px;
  font-weight: 700;
}

.pro-slot .bar {
  margin-top: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  overflow: hidden;
}

.pro-slot .bar-fill {
  height: 100%;
  background: rgba(74, 222, 128, 0.85);
  width: 0%;
}

.hitpad-zone {
  position: absolute;
  border: 2px solid rgba(255, 255, 255, var(--idle-alpha, 0.35));
  border-radius: 4px;
  transition: border-color 40ms linear, box-shadow 40ms linear;
}

.hitpad-zone.telegraph {
  border-color: rgba(var(--tele-r), var(--tele-g), var(--tele-b), 1);
  border-width: 5px;
  background: rgba(var(--tele-r), var(--tele-g), var(--tele-b), 0.42);
  box-shadow:
    0 0 28px rgba(var(--tele-r), var(--tele-g), var(--tele-b), 0.95),
    inset 0 0 18px rgba(var(--tele-r), var(--tele-g), var(--tele-b), 0.35);
}

.zone-label {
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  color: rgba(242, 242, 240, 0.75);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

.action-feedback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(20px, 5vmin, 42px);
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  pointer-events: none;
  z-index: 6;
}

.action-feedback.pass {
  color: #4ade80;
}

.action-feedback.fail {
  color: #f87171;
}

#meter {
  position: absolute;
  left: 2%;
  top: 38%;
  width: 160px;
  height: 4px;
  background: rgba(255, 255, 255, 0.35);
  border-radius: 2px;
  overflow: hidden;
  z-index: 20;
}

#meter-fill {
  height: 100%;
  width: 0%;
  background: rgba(255, 255, 255, 0.85);
  transition: width 60ms linear;
}

#banner {
  position: absolute;
  right: 24px;
  bottom: 24px;
  left: auto;
  top: auto;
  width: auto;
  min-width: 120px;
  padding: 12px 20px;
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  text-align: center;
  border-radius: 6px;
  z-index: 30;
}

#banner.hidden,
#error.hidden,
#start-overlay.hidden {
  display: none;
}

#start-overlay {
  position: absolute;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

#start-game-btn {
  padding: 18px 48px;
  border: 2px solid #fff;
  border-radius: 4px;
  background: transparent;
  color: #fff;
  font-family: inherit;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
}

#start-game-btn:hover {
  background: #fff;
  color: #000;
}

#start-game-btn:focus {
  outline: 2px solid rgba(255, 255, 255, 0.6);
  outline-offset: 4px;
}

#start-game-btn:active {
  transform: scale(0.98);
}

#error {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.92);
  color: #f87171;
  padding: 2rem;
  font-size: 16px;
  white-space: pre-wrap;
  z-index: 100;
}

#dev-panel {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 13px;
  color: #fff;
  backdrop-filter: blur(8px);
  pointer-events: auto;
  min-width: 180px;
}

#dev-panel.dev-panel--collapsed {
  padding: 4px;
  min-width: unset;
  background: rgba(0, 0, 0, 0.45);
  border-color: rgba(255, 255, 255, 0.12);
  gap: 0;
}

.dev-toggle {
  align-self: flex-end;
  padding: 5px 10px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font: inherit;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  user-select: none;
}

.dev-toggle:hover {
  background: rgba(255, 255, 255, 0.18);
}

.dev-panel-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dev-panel-body.is-hidden {
  display: none;
}

.dev-menu {
  position: relative;
}

.dev-menu > summary {
  list-style: none;
  cursor: pointer;
  user-select: none;
  padding: 6px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.12);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.dev-menu > summary::-webkit-details-marker {
  display: none;
}

.dev-menu[open] > summary {
  background: rgba(255, 255, 255, 0.2);
}

.dev-menu-panel {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 120px;
  padding: 4px;
  border-radius: 6px;
  background: rgba(20, 20, 20, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

.dev-menu-item {
  display: block;
  width: 100%;
  padding: 8px 12px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: #fff;
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}

.dev-menu-item:hover {
  background: rgba(255, 255, 255, 0.12);
}

.dev-frame-readout {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-variant-numeric: tabular-nums;
}

.dev-label {
  opacity: 0.7;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.dev-value {
  font-size: 22px;
  font-weight: 700;
}

.dev-meta {
  opacity: 0.55;
  font-size: 12px;
}

.dev-meta-line {
  opacity: 0.65;
  font-size: 11px;
}

.dev-seek-form {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
}

.dev-seek-form label {
  opacity: 0.85;
  font-size: 12px;
  white-space: nowrap;
}

.dev-seek-form input {
  width: 72px;
  padding: 5px 6px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font: inherit;
  font-size: 13px;
}

.dev-seek-form input:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.55);
}

.dev-seek-form button {
  padding: 5px 10px;
  border: none;
  border-radius: 4px;
  background: #fff;
  color: #000;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.dev-seek-form button:hover {
  background: #e8e8e8;
}