:root {
  font-family:
    Inter, -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "SF Pro Text", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: #151515;
  background: #ffffff;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* { box-sizing: border-box; }

html,
body,
#app,
.viewer {
  width: 100%;
  height: 100%;
  margin: 0;
}

html,
body,
#app {
  overflow: hidden;
  background: #ffffff !important;
}

body {
  min-width: 320px;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
}

#app {
  position: relative;
}

.viewer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #ffffff !important;
}

.viewer canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.boot-status {
  position: absolute;
  z-index: 100;
  left: 50%;
  top: 50%;
  max-width: min(86vw, 440px);
  transform: translate(-50%, -50%);
  padding: 10px 14px;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 999px;
  background: rgba(255,255,255,.88);
  color: rgba(20,20,20,.6);
  font-size: 12px;
  text-align: center;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 12px 36px rgba(0,0,0,.08);
  transition: opacity .35s ease, transform .35s ease;
  pointer-events: none;
}

.boot-status.hidden {
  opacity: 0;
  transform: translate(-50%, calc(-50% + 5px));
}

.boot-status.error {
  color: #9b2431;
  border-color: rgba(155,36,49,.16);
  border-radius: 16px;
}

.brand {
  position: absolute;
  z-index: 20;
  top: max(22px, env(safe-area-inset-top));
  left: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  pointer-events: none;
}

.brand strong {
  font-size: clamp(19px, 2.2vw, 28px);
  font-weight: 650;
  letter-spacing: -.035em;
  color: rgba(20,20,22,.92);
}

.brand span {
  font-size: 11px;
  color: rgba(20,20,22,.42);
}

.reset-button {
  position: absolute;
  z-index: 20;
  top: max(18px, env(safe-area-inset-top));
  right: 20px;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 50%;
  background: rgba(255,255,255,.75);
  color: rgba(20,20,22,.72);
  font-size: 20px;
  cursor: pointer;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 10px 28px rgba(0,0,0,.07);
}

.color-ui {
  position: absolute;
  z-index: 30;
  left: 50%;
  bottom: max(28px, calc(env(safe-area-inset-bottom) + 18px));
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  pointer-events: none;
}

.color-name {
  color: rgba(20,20,22,.84);
  font-size: 14px;
  font-weight: 600;
}

.color-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  border: 1px solid rgba(0,0,0,.10);
  border-radius: 999px;
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 15px 42px rgba(0,0,0,.10);
  pointer-events: auto;
}

.color-button {
  width: 42px;
  height: 42px;
  padding: 5px;
  border: 1.5px solid transparent;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: transform .2s ease, border-color .2s ease;
}

.color-button.active {
  border-color: rgba(20,20,22,.82);
}

.color-button:active {
  transform: scale(.95);
}

.color-swatch {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.10), 0 4px 12px rgba(0,0,0,.08);
}

.disclaimer {
  position: absolute;
  z-index: 8;
  left: 20px;
  bottom: max(14px, env(safe-area-inset-bottom));
  color: rgba(20,20,22,.28);
  font-size: 9px;
  pointer-events: none;
}

@media (max-width: 720px) {
  .brand {
    top: max(15px, env(safe-area-inset-top));
    left: 16px;
  }

  .brand strong { font-size: 20px; }

  .reset-button {
    top: max(12px, env(safe-area-inset-top));
    right: 15px;
  }

  .color-ui {
    bottom: max(18px, calc(env(safe-area-inset-bottom) + 10px));
  }

  .color-button {
    width: 49px;
    height: 49px;
    padding: 6px;
  }

  .disclaimer { display: none; }
}