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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  background-color: var(--color-bg) !important;
  color: var(--color-text-primary) !important;
  font-family: var(--font-sans);
  line-height: 1.5;
  height: 100%;
  overflow: hidden;
}

body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background-color: var(--color-bg) !important;
  color: var(--color-text-primary) !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  line-height: 1.25;
  letter-spacing: -0.015em;
}

h1 { font-size: var(--text-2xl); font-weight: var(--font-bold); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-md); }
h5 { font-size: var(--text-base); }
h6 { font-size: var(--text-sm); }

p {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  line-height: 1.6;
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

code, pre, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-light);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Focus States for Accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
}

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

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

img, svg {
  display: block;
  max-width: 100%;
}

input, textarea, select {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  padding: var(--space-2) var(--space-3);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  color-scheme: dark;
}

select option, optgroup {
  background-color: var(--color-surface, #000000);
  color: var(--color-text-primary, #FAFAFA);
}

input:focus, textarea:focus, select:focus {
  border-color: var(--color-primary-hover);
  box-shadow: 0 0 0 2px var(--color-primary-dim);
  outline: none;
}

input::placeholder, textarea::placeholder {
  color: var(--color-text-muted);
}

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