/* ============================================================
   Base — reset + typographic defaults + focus
   ============================================================ */

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-size-adjust: 100%;
  color-scheme: light dark;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--lh-normal);
  color: var(--text);
  background: var(--surface-app);
  min-height: 100vh;
  padding: var(--s-5);
  transition: background var(--dur-base) var(--ease), color var(--dur-base) var(--ease);
}

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

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: none;
  border: none;
}

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

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  color: var(--text);
}

/* ============================================================
   Focus ring — accessible, visible, on keyboard only
   ============================================================ */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

/* Keep scrollbars styled nicely */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--gray-300) transparent;
}

*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

*::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: var(--r-full);
}

*::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}

/* Reduced motion */
@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;
  }
}