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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: #0b0c0f;
  color: #f2f2f2;
}

canvas {
  display: block;
  position: fixed;
  inset: 0;
  touch-action: none;
}

/* Tela inicial */
.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 30%, #1a1c22, #0b0c0f);
  z-index: 20;
  padding: 24px;
}

.panel {
  max-width: 420px;
  width: 100%;
  text-align: center;
}

.panel h1 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.panel p {
  font-size: 0.95rem;
  color: #b4b6bd;
  line-height: 1.5;
  margin-bottom: 24px;
}

.btn-primary {
  appearance: none;
  border: none;
  background: #ffffff;
  color: #0b0c0f;
  font-size: 1rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.support-message {
  margin-top: 20px;
  color: #ff8b7a;
  font-size: 0.85rem;
  line-height: 1.5;
}

/* HUD durante AR — minimalista, não ocupa área central */
.hud {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  padding: env(safe-area-inset-top, 16px) env(safe-area-inset-right, 16px)
    env(safe-area-inset-bottom, 16px) env(safe-area-inset-left, 16px);
}

.instructions {
  margin-top: 16px;
  padding: 8px 16px;
  background: rgba(11, 12, 15, 0.55);
  backdrop-filter: blur(6px);
  border-radius: 999px;
  font-size: 0.85rem;
  color: #f2f2f2;
  text-align: center;
}

.hud-buttons {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  pointer-events: auto;
}

.btn-secondary {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(11, 12, 15, 0.6);
  backdrop-filter: blur(6px);
  color: #f2f2f2;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 12px 20px;
  border-radius: 999px;
  cursor: pointer;
}

.btn-secondary:active {
  background: rgba(255, 255, 255, 0.15);
}

/* Camada de captura de gestos: ocupa a tela inteira, atrás dos controles */
.gesture-layer {
  position: absolute;
  inset: 0;
  pointer-events: auto;
  touch-action: none;
}

.instructions[hidden] {
  display: none;
}

/* Aviso temporário do estado da oclusão por profundidade */
.depth-badge {
  position: absolute;
  top: calc(env(safe-area-inset-top, 16px) + 60px);
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(0, 224, 164, 0.16);
  border: 1px solid rgba(0, 224, 164, 0.5);
  color: #7ff0d0;
  font-size: 0.75rem;
  letter-spacing: 0.01em;
}

.depth-badge.is-off {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  color: #c9cbd2;
}

.depth-badge[hidden] {
  display: none;
}

/* Painel de diagnóstico técnico (ocultável para a apresentação) */
.diag-panel {
  position: absolute;
  top: calc(env(safe-area-inset-top, 16px) + 8px);
  left: env(safe-area-inset-left, 16px);
  min-width: 190px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(11, 12, 15, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(8px);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.68rem;
  line-height: 1.6;
  color: #9ea1a9;
  pointer-events: none;
}

.diag-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.diag-row b {
  color: #f2f2f2;
  font-weight: 600;
}

.diag-panel[hidden] {
  display: none;
}

.btn-icon {
  appearance: none;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(11, 12, 15, 0.6);
  backdrop-filter: blur(6px);
  color: #f2f2f2;
  font-size: 0.95rem;
  font-style: italic;
  font-weight: 600;
  cursor: pointer;
}

.btn-icon.is-on {
  background: rgba(0, 224, 164, 0.2);
  border-color: rgba(0, 224, 164, 0.55);
}