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

.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 999;
  padding: 0.75rem 1.25rem;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
}

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

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

input, select, textarea {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 0.625rem 0.875rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
}

p {
  color: var(--color-text-secondary);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

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

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

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

.btn:focus-visible,
.nav-item:focus-visible,
.bottom-nav-item:focus-visible,
.header-menu:focus-visible,
.btn-icon:focus-visible,
.color-swatch:focus-visible,
.icon-option:focus-visible,
.dropdown-item:focus-visible,
.list-item:focus-visible,
.skip-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.toggle-input:focus-visible + .toggle-slider {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@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;
  }
}