/* base.css - Base styles — Apple style: clean, light, readable */

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg-light);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-normal);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background-color: var(--color-accent);
  color: #ffffff;
}

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

/* Skip-to-content link for keyboard users */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 1000;
  padding: 12px 24px;
  background-color: var(--color-accent);
  color: #ffffff;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-small);
  text-decoration: none;
  border-radius: 8px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

/* Sections */
.section {
  padding: var(--spacing-section) clamp(20px, 5vw, 48px);
}

.section--light {
  background-color: var(--color-bg-light);
}

.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
}

.section__container {
  max-width: var(--max-width);
  margin-inline: auto;
}

.section__heading {
  font-size: var(--font-size-section-heading);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 0.3em;
}

.section__subheading {
  font-size: var(--font-size-section-sub);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-section-inner);
  max-width: 600px;
}

/* Footer */
.footer {
  padding: 40px clamp(20px, 5vw, 48px);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  border-top: 1px solid var(--color-border);
  max-width: var(--max-width);
  margin-inline: auto;
}