/* layout.css — Header, Footer, Grid, Sections, Containers */

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

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

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

/* === Section Spacing === */
.section {
  padding-block: var(--space-24);
}

.section--sm {
  padding-block: var(--space-16);
}

.section--lg {
  padding-block: var(--space-32);
}

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

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

.section--bg-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverted);
}

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

@media (max-width: 768px) {
  .section        { padding-block: var(--space-16); }
  .section--sm    { padding-block: var(--space-12); }
  .section--lg    { padding-block: var(--space-20); }
}

/* === Section Header === */
.section-header {
  margin-bottom: var(--space-12);
}

.section-header--center {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

.section-header__title {
  margin-bottom: var(--space-4);
}

.section-header__subtitle {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* === Grid === */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }
}

/* === Flex Utilities === */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col    { flex-direction: column; }
.gap-2       { gap: var(--space-2); }
.gap-4       { gap: var(--space-4); }
.gap-6       { gap: var(--space-6); }
.gap-8       { gap: var(--space-8); }

/* === Body offset for fixed floating header === */
body {
  padding-top: var(--header-offset);
}

/* === Site Header — floating glass pill === */
.site-header {
  position: fixed;
  top: var(--header-top-gap);
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  max-width: 1248px;
  z-index: var(--z-sticky);
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07), 0 1px 4px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.95);
  transition:
    height var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base);
}

.site-header.is-scrolled {
  height: var(--header-height-scrolled);
  background: var(--glass-bg-strong);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.10), 0 2px 8px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 1);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-8);
}

/* === Logo === */
.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.site-logo img {
  height: 64px;
  width: auto;
  transition: opacity var(--transition-fast);
}

.site-logo:hover img {
  opacity: 0.85;
}

/* === Primary Navigation === */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav__item {
  position: relative;
}

.site-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition:
    color var(--transition-fast),
    background var(--transition-fast);
  white-space: nowrap;
}

.site-nav__link:hover {
  color: var(--color-primary);
  background: var(--color-secondary-light);
}

.site-nav__link.is-active {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.site-nav__link--dropdown {
  gap: var(--space-2);
}

.site-nav__chevron {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.site-nav__item.is-open .site-nav__chevron {
  transform: rotate(180deg);
}

/* === Header CTA === */
.header-cta {
  margin-left: var(--space-4);
  flex-shrink: 0;
}

/* === Hamburger === */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
  cursor: pointer;
  gap: 5px;
}

.hamburger:hover {
  background: var(--color-secondary-light);
}

.hamburger__line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
  transform-origin: center;
}

.hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* === Mobile Navigation Overlay === */
.mobile-nav {
  display: none;
  position: fixed;
  top: calc(var(--header-height) + 20px);
  left: 16px;
  right: 16px;
  bottom: 16px;
  background: var(--glass-bg-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-overlay);
  overflow-y: auto;
  padding: var(--space-6) var(--space-6);
  transform: translateX(105%);
  transition: transform var(--transition-slow);
}

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

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-nav__link {
  display: block;
  padding: var(--space-4) var(--space-4);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  border-radius: var(--radius-lg);
  transition: background var(--transition-fast), color var(--transition-fast);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__link:hover,
.mobile-nav__link.is-active {
  color: var(--color-primary);
  background: var(--color-secondary-light);
}

.mobile-nav__sublabel {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}

.mobile-nav__sublist {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-nav__sublink {
  display: block;
  padding: var(--space-3) var(--space-4) var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.mobile-nav__sublink:hover {
  color: var(--color-primary);
  background: var(--color-secondary-light);
}

.mobile-nav__cta {
  margin-top: var(--space-8);
}

/* === Site Footer === */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.8);
  padding-block: var(--space-16) var(--space-8);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}


.site-footer__logo {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.9;
  margin-bottom: var(--space-4);
}

.site-footer__claim {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  font-style: italic;
  margin-bottom: var(--space-4);
}

.site-footer__brand-text {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: rgba(255,255,255,0.65);
}

.site-footer__col-title {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wider);
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-4);
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.site-footer__link {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.75);
  transition: color var(--transition-fast);
}

.site-footer__link:hover {
  color: var(--color-text-inverted);
}

.site-footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--space-3);
}

.site-footer__contact-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 2px;
  opacity: 0.65;
}

.site-footer__bottom {
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.site-footer__copyright {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.4);
}

.site-footer__legal-links {
  display: flex;
  gap: var(--space-6);
}

.site-footer__legal-link {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.5);
  transition: color var(--transition-fast);
}

.site-footer__legal-link:hover {
  color: rgba(255,255,255,0.85);
}

@media (max-width: 1024px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .site-nav  { display: none; }
  .header-cta { display: none; }
  .mobile-nav { display: block; }
  .site-header {
    width: calc(100% - 32px);
    border-radius: var(--radius-xl);
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
}

/* === Breadcrumb === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.breadcrumb__item + .breadcrumb__item::before {
  content: '/';
  color: var(--color-border);
  margin-right: var(--space-2);
}

.breadcrumb__link {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

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

.breadcrumb__current {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
}