/* Base typography & global elements */

body {
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--color-text-primary);
  background: var(--color-bg);
}

/* Anchor offset for sticky header */
section[id] {
  scroll-margin-top: calc(var(--header-height) + var(--space-3));
}

/* ============ Button (BEM) ============ */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  transition:
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    opacity var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.button--primary {
  background: var(--color-text-primary);
  color: var(--color-text-inverse);
}

.button--primary:hover {
  opacity: 0.86;
}

.button--primary:active {
  opacity: 0.78;
}

.button--secondary {
  border: 0.5px solid var(--color-border-secondary);
  color: var(--color-text-primary);
  background: transparent;
}

.button--secondary:hover {
  background: var(--color-surface);
  border-color: var(--color-text-secondary);
}

.button--accent {
  background: var(--color-accent);
  color: var(--color-text-inverse);
}

.button--accent:hover {
  background: var(--color-accent-hover);
}