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

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.section {
  padding-block: var(--space-xl);
}

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

.section__header {
  margin-bottom: var(--space-lg);
  max-width: 42rem;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.section__subtitle {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(15, 20, 25, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.logo__name {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo__name-first {
  color: var(--color-text);
}

.logo__name-last {
  color: var(--color-accent);
}

.logo__tagline {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.nav__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-text);
}

.nav__toggle-icon,
.nav__toggle-icon::before,
.nav__toggle-icon::after {
  display: block;
  width: 1.25rem;
  height: 2px;
  background-color: currentColor;
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle-icon {
  position: relative;
}

.nav__toggle-icon::before,
.nav__toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav__toggle-icon::before {
  top: -6px;
}

.nav__toggle-icon::after {
  top: 6px;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon {
  background-color: transparent;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav__list {
  display: none;
  flex-direction: column;
  gap: var(--space-sm);
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  padding: var(--space-md);
  background-color: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.nav__list.is-open {
  display: flex;
}

.nav__link {
  display: block;
  padding: var(--space-xs) var(--space-sm);
  color: var(--color-text-muted);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-text);
  background-color: var(--color-bg-card);
}

.nav__link[aria-current="page"] {
  color: var(--color-accent);
}

.nav__cta {
  width: 100%;
  text-align: center;
}

@media (min-width: 768px) {
  .nav__toggle {
    display: none;
  }

  .nav__list {
    display: flex;
    flex-direction: row;
    align-items: center;
    position: static;
    padding: 0;
    background: none;
    border: none;
    box-shadow: none;
    gap: var(--space-md);
  }

  .nav__cta {
    width: auto;
  }
}

/* Footer */
.site-footer {
  padding-block: var(--space-xl);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-elevated);
}

.footer-grid {
  display: grid;
  gap: var(--space-lg);
}

.footer-brand__name {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.footer-brand__tagline {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
}

.footer-nav__title {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.footer-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-nav__link {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.footer-nav__link:hover,
.footer-nav__link:focus-visible {
  color: var(--color-accent);
}

.footer-bottom {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}