/* Little Rocket — UI styling. The 3D scene paints itself; this is the chrome. */

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

html, body {
  margin: 0;
  height: 100%;
  background: var(--ij-color-bg-app, #000);
  color: var(--ij-color-text-primary, #fff);
  font-family: var(--ij-font-ui, system-ui);
  font-size: var(--ij-font-size-base, 16px);
  line-height: var(--ij-line-height-normal, 24px);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

canvas { display: block; }

/* Start overlay */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--ij-spacing-lg, 16px);
  padding: var(--ij-spacing-xxl, 24px);
  background: rgba(0, 0, 0, 0.85);
  text-align: center;
}

.overlay[hidden] { display: none; }

/* Show desktop overlay only on devices with hover + fine pointer (mouse/trackpad).
   Touch-only devices (phones, tablets) get the mobile warning instead. */
.overlay--mobile { display: none; }

@media (hover: none) and (pointer: coarse) {
  .overlay--desktop { display: none; }
  .overlay--mobile  { display: flex; }
}

h1 {
  margin: 0;
  font-size: var(--ij-font-size-xxl, 36px);
  line-height: var(--ij-line-height-xxl, 43.2px);
  font-weight: var(--ij-font-weight-bold, 700);
  letter-spacing: 2px;
}

.hint {
  margin: 0;
  max-width: 440px;
  color: var(--ij-color-text-secondary, rgba(255, 255, 255, 0.75));
  font-size: var(--ij-font-size-sm, 14px);
  line-height: var(--ij-line-height-normal, 24px);
}

.btn-primary {
  appearance: none;
  border: 0;
  cursor: pointer;
  padding: var(--ij-spacing-md, 12px) var(--ij-spacing-xxxl, 32px);
  background: var(--ij-color-primary, #D0FF00);
  color: var(--ij-color-on-primary, #000);
  font: inherit;
  font-weight: var(--ij-font-weight-semibold, 600);
  border-radius: var(--ij-radius-md, 12px);
  transition: transform var(--ij-duration-fast, 150ms) var(--ij-easing-standard);
}

.btn-primary:hover { transform: translateY(-1px); }
.btn-primary:focus-visible {
  outline: 2px solid var(--ij-color-primary, #D0FF00);
  outline-offset: 3px;
}

/* HUD */
#ui {
  position: fixed;
  top: var(--ij-spacing-md, 12px);
  left: var(--ij-spacing-md, 12px);
  display: inline-flex;
  align-items: baseline;
  gap: var(--ij-spacing-sm, 8px);
  padding: var(--ij-spacing-sm, 8px) var(--ij-spacing-md, 12px);
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--ij-color-border-subtle, rgba(255, 255, 255, 0.12));
  border-radius: var(--ij-radius-sm, 8px);
  font-size: var(--ij-font-size-sm, 14px);
  pointer-events: none;
}

.ui-label { color: var(--ij-color-text-secondary, rgba(255, 255, 255, 0.75)); }
.ui-value {
  font-variant-numeric: tabular-nums;
  font-weight: var(--ij-font-weight-semibold, 600);
}