/* ==========================================================================
   Base element styles
   ========================================================================== */

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-app);
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--duration-base) var(--ease-standard),
    color var(--duration-base) var(--ease-standard);
  overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

h1 {
  font-size: var(--text-3xl);
}
h2 {
  font-size: var(--text-2xl);
}
h3 {
  font-size: var(--text-lg);
}

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

small {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

code {
  font-family: var(--font-mono);
}

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

/* Scrollbar (WebKit) */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color-strong);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-track {
  background: transparent;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}