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

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background-color: #1a1a2e;
  font-family: var(--font-sans);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.glass {
  background: var(--color-bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-glass);
}

.glass-subtle {
  background: var(--color-bg-overlay);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-sm);
}

.glass-whisper {
  background: var(--color-bg-glass-whisper);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--color-border-glass-whisper);
  border-radius: var(--radius-md);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Locale-aware typography */
:lang(zh-Hant) {
  font-family: var(--font-sans-cjk);
}

:lang(zh-Hant) .widget__label,
:lang(zh-Hant) .global-nav__label--mobile,
:lang(zh-Hant) .dashboard-group__title,
:lang(zh-Hant) .dev-login__tag,
:lang(zh-Hant) .nav-rail__text {
  text-transform: none;
  letter-spacing: normal;
}