/* Layout Styles */
/* Container, Grid, Header, Navigation, Footer */

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

.container--narrow {
  max-width: var(--container-width-narrow);
}

.container--wide {
  max-width: var(--container-width-wide);
}

/* Section spacing */
section {
  padding: var(--spacing-4xl) 0;
}

section.section--compact {
  padding: var(--spacing-2xl) 0;
}

section.section--spacious {
  padding: var(--spacing-6xl) 0;
}

@media (max-width: 768px) {
  section {
    padding: var(--spacing-3xl) 0;
  }

  section.section--compact {
    padding: var(--spacing-xl) 0;
  }

  section.section--spacious {
    padding: var(--spacing-4xl) 0;
  }
}

/* Background variants */
.bg-white {
  background-color: var(--colour-background);
}

.bg-grey {
  background-color: var(--colour-background-alt);
}

.bg-primary {
  background-color: var(--colour-primary);
  color: white;
}

.bg-primary-light {
  background-color: var(--colour-primary-pale);
}

.bg-secondary {
  background-color: var(--colour-secondary);
  color: white;
}

/* Header and Navigation */
header[role="banner"] {
  background-color: var(--colour-background);
  border-bottom: 1px solid var(--colour-border-light);
  position: sticky;
  top: 0;
  z-index: var(--z-index-sticky);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--spacing-md) var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

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

.logo-link {
  text-decoration: none;
  color: var(--colour-primary);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  transition: color var(--transition-base);
}

.logo-link:hover {
  color: var(--colour-primary-dark);
}

.logo-link:focus {
  outline: var(--focus-outline);
  outline-offset: var(--focus-outline-offset);
  border-radius: var(--radius-sm);
}

.nav-logo-img {
  height: 50px;
  width: auto;
  display: block;
}

.logo-text {
  display: inline-block;
  line-height: 1;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  margin: calc(var(--spacing-sm) * -1);
  color: var(--colour-text);
}

.hamburger-icon {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  height: 18px;
}

.hamburger-icon span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Navigation menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--colour-text);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-link:hover {
  background-color: var(--colour-background-alt);
  color: var(--colour-primary);
}

.nav-link[aria-current="page"] {
  color: var(--colour-primary);
  background-color: var(--colour-primary-pale);
}

.nav-link--cta {
  background-color: var(--colour-primary);
  color: white;
}

.nav-link--cta:hover {
  background-color: var(--colour-primary-dark);
  color: white;
}

/* Mobile navigation */
@media (max-width: 1024px) {
  .mobile-menu-toggle {
    display: block;
  }

  .logo-text {
    display: none;
  }

  .nav-menu {
    position: fixed;
    top: 73px; /* Height of header */
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--colour-background);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--spacing-lg);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.is-open {
    transform: translateX(0);
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
  }

  /* Prevent body scroll when menu is open */
  body.menu-open {
    overflow: hidden;
  }
}

/* Footer */
.site-footer {
  background-color: var(--colour-text);
  color: white;
  padding: var(--spacing-4xl) 0 var(--spacing-xl) 0;
  margin-top: var(--spacing-6xl);
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer-section--primary {
  grid-column: 1 / -1;
}

@media (min-width: 1024px) {
  .footer-section--primary {
    grid-column: span 1;
  }
}

.footer-heading {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  color: white;
}

.footer-tagline {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: color var(--transition-base);
}

.footer-links a:hover {
  color: white;
  text-decoration: underline;
}

.footer-contact {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.9);
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
}

.footer-contact a:hover {
  color: white;
  text-decoration: underline;
}

.footer-phone {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
}

.footer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--spacing-xl);
}

.footer-bottom-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
}

.footer-copyright {
  margin: 0;
}

.footer-acknowledgement {
  margin: 0;
  font-style: italic;
  line-height: var(--line-height-relaxed);
  max-width: 70ch;
}

.footer-registration {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  color: rgba(255, 255, 255, 0.9);
}

/* Grid utilities */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

@media (max-width: 768px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

/* Flex utilities */
.flex {
  display: flex;
  gap: var(--spacing-md);
}

.flex--center {
  align-items: center;
  justify-content: center;
}

.flex--between {
  align-items: center;
  justify-content: space-between;
}

.flex--wrap {
  flex-wrap: wrap;
}

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

/* Spacing utilities */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }
.mt-3xl { margin-top: var(--spacing-3xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }
.mb-3xl { margin-bottom: var(--spacing-3xl); }

.pt-0 { padding-top: 0; }
.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }

.pb-0 { padding-bottom: 0; }
.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }