body {
  font-family: var(--font-primary);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.1;
  color: inherit;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--text-hero);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
}

h2 {
  font-size: var(--text-section-title);
  letter-spacing: -0.02em;
}

h3 {
  font-size: var(--text-subsection);
  font-weight: 600;
}

p {
  font-size: var(--text-body);
  line-height: 1.7;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

.text-lg {
  font-size: var(--text-body-lg);
  line-height: 1.75;
  color: inherit;
}

.text-caption {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
}

.text-label {
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--color-text-tertiary);
}

.text-mono {
  font-family: var(--font-mono);
  font-size: var(--text-data);
}

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

button {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 3px;
}

::selection {
  background-color: var(--color-accent-blue-soft);
  color: var(--color-accent-blue);
}

.dark-section ::selection {
  background-color: var(--color-accent-blue);
  color: var(--color-text-inverse);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--color-text-tertiary);
  border-radius: 10px;
  border: 2px solid var(--color-bg-primary);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}