/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

section {
  padding-block: var(--space-8);
}

@media (max-width: 767px) {
  section { padding-block: var(--space-7); }
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(252, 253, 252, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-outline-variant);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: var(--space-4);
}

.wordmark {
  font-size: var(--text-title-lg);
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.nav-toggle:hover { background: var(--color-surface-container); }

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-on-surface);
  border-radius: 2px;
  position: relative;
  transition: var(--transition-fast);
}
.nav-toggle-icon::before { content: ""; position: absolute; top: -7px; }
.nav-toggle-icon::after { content: ""; position: absolute; top: 7px; }

.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav-links a {
  font-size: var(--text-body-md);
  font-weight: 500;
  color: var(--color-on-surface-variant);
  padding-block: var(--space-2);
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}

.nav-links a.active {
  border-bottom-color: var(--color-primary);
}

.nav-cta {
  flex-shrink: 0;
}

@media (max-width: 1023px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .primary-nav {
    position: fixed;
    inset-inline: 0;
    top: var(--header-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-outline-variant);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: var(--transition-fast);
  }

  .primary-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-links a {
    padding: var(--space-3) var(--space-2);
    border-bottom: 1px solid var(--color-outline-variant);
  }

  .nav-links a.active { border-inline-start: 3px solid var(--color-primary); }

  .nav-cta {
    margin-top: var(--space-4);
  }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-surface-container);
  border-top: 1px solid var(--color-outline-variant);
  padding-block: var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-6);
}

.footer-brand p {
  margin-top: var(--space-3);
  color: var(--color-on-surface-variant);
  max-width: 32ch;
}

.footer-col h3 {
  font-size: var(--text-label-lg);
  color: var(--color-on-surface-variant);
  margin-bottom: var(--space-3);
}

.footer-col ul { display: flex; flex-direction: column; gap: var(--space-2); }

.footer-col a {
  color: var(--color-on-surface);
  transition: var(--transition-fast);
}

.footer-col a:hover { color: var(--color-primary); }

.footer-bottom {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-outline-variant);
  color: var(--color-on-surface-variant);
  font-size: var(--text-label-lg);
  text-align: center;
}

@media (max-width: 767px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 479px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ---------- Generic grid/flex utilities ---------- */
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-5);
}

.stack { display: flex; flex-direction: column; }

.text-center { text-align: center; }

.section-heading {
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-7);
}

.section-heading .eyebrow {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--text-label-lg);
  margin-bottom: var(--space-2);
}

.section-heading h2 {
  font-size: var(--text-headline-lg);
  line-height: var(--lh-headline-lg);
  color: var(--color-on-surface);
}

.section-heading p {
  margin-top: var(--space-3);
  color: var(--color-on-surface-variant);
  font-size: var(--text-body-lg);
  line-height: var(--lh-body-lg);
}

@media (max-width: 639px) {
  .section-heading h2 { font-size: var(--text-headline-md); line-height: var(--lh-headline-md); }
}