/* ============================================
   EdSeva — Navbar & Footer
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.navbar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2) var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--color-primary);
}

.brand:hover {
  color: var(--color-primary);
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.4rem;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-links a {
  font-weight: 600;
  font-size: 0.96rem;
  color: var(--color-text);
  padding: 0.4rem 0.1rem;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-secondary);
}

.nav-cta {
  margin-left: var(--space-1);
}

@media (max-width: 860px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-1) var(--space-3) var(--space-3);
    display: none;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links li {
    display: block;
  }

  .nav-links a {
    display: block;
    font-size: 1.08rem;
    padding: 0.95rem 0.35rem;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }

  .nav-links li:last-child a {
    border-bottom: none;
  }

  .nav-links a[aria-current="page"] {
    border-bottom: 1px solid var(--color-border);
    color: var(--color-primary);
  }

  .nav-cta {
    margin: var(--space-2) 0 0;
  }

  .nav-cta .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  padding: var(--space-6) 0 var(--space-3);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-4);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-on-dark-18);
}

.footer-brand .brand-name {
  color: var(--color-text-on-dark);
}

.footer-brand .brand-mark {
  background: var(--color-secondary);
}

.footer-tagline {
  color: var(--color-on-dark-75);
  max-width: 30ch;
  margin-top: var(--space-2);
}

.footer-heading {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: var(--space-2);
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: var(--color-on-dark-82);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--color-bg);
}

.social-row {
  display: flex;
  gap: 0.7rem;
}

.social-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--color-on-dark-35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-on-dark);
}

.social-icon:hover {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: var(--color-primary);
}

.social-icon svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding-top: var(--space-3);
  font-size: 0.85rem;
  color: var(--color-on-dark-60);
}

@media (max-width: 760px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
    margin-bottom: var(--space-2);
  }
}