/* gnlx-layout.css — Container, grid, section wrappers, nav, footer */

/* ============================================================
   CONTAINER
   ============================================================ */
.gnlx-container {
  width: 100%;
  max-width: var(--gnlx-container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.gnlx-container--narrow {
  max-width: var(--gnlx-content-narrow);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

/* ============================================================
   SECTION BACKGROUNDS
   ============================================================ */
.gnlx-section {
  padding: var(--gnlx-section-pad-desktop);
}

.gnlx-section--dark {
  background-color: var(--gnlx-bg-dark-primary);
  color: var(--gnlx-on-dark-body);
}

.gnlx-section--dark-alt {
  background-color: var(--gnlx-bg-dark-secondary);
  color: var(--gnlx-on-dark-body);
}

.gnlx-section--light {
  background-color: var(--gnlx-bg-light-primary);
  color: var(--gnlx-on-light-body);
}

.gnlx-section--white {
  background-color: var(--gnlx-bg-white);
  color: var(--gnlx-on-light-body);
}

/* Headings inside section contexts */
.gnlx-section--dark h1,
.gnlx-section--dark h2,
.gnlx-section--dark h3,
.gnlx-section--dark h4 {
  color: var(--gnlx-on-dark-heading);
}

.gnlx-section--dark-alt h1,
.gnlx-section--dark-alt h2,
.gnlx-section--dark-alt h3,
.gnlx-section--dark-alt h4 {
  color: var(--gnlx-on-dark-heading);
}

.gnlx-section--light h1,
.gnlx-section--light h2,
.gnlx-section--light h3,
.gnlx-section--light h4 {
  color: var(--gnlx-on-light-heading);
}

.gnlx-section--white h1,
.gnlx-section--white h2,
.gnlx-section--white h3,
.gnlx-section--white h4 {
  color: var(--gnlx-on-light-heading);
}

/* Section heading alignment */
.gnlx-section__header {
  margin-bottom: 3rem;
}

.gnlx-section__header--centered {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: 3rem;
}

.gnlx-section__label {
  font-family: var(--gnlx-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.gnlx-section--dark .gnlx-section__label,
.gnlx-section--dark-alt .gnlx-section__label {
  color: var(--gnlx-accent-teal);
}

.gnlx-section--light .gnlx-section__label,
.gnlx-section--white .gnlx-section__label {
  color: var(--gnlx-brand-teal-deep);
}

/* ============================================================
   GRID UTILITIES
   ============================================================ */
.gnlx-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.gnlx-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.gnlx-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

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

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

.gnlx-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 768px) {
  .gnlx-two-col {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.gnlx-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  background: transparent;
  transition: background var(--gnlx-transition-slow), box-shadow var(--gnlx-transition-slow);
}

/* Dark-top pages: transparent nav; links are light */
body.gnlx-page--dark-top .gnlx-nav {
  background: transparent;
}

body.gnlx-page--dark-top .gnlx-nav .gnlx-nav__link {
  color: var(--gnlx-on-dark-body);
}

body.gnlx-page--dark-top .gnlx-nav .gnlx-nav__logo-img--dark {
  display: none;
}
body.gnlx-page--dark-top .gnlx-nav .gnlx-nav__logo-img--light {
  display: block;
}

/* Light-top pages: nav starts with light-safe background; links are dark */
body.gnlx-page--light-top .gnlx-nav {
  background: var(--gnlx-bg-light-primary);
  border-bottom: 1px solid var(--gnlx-border-light);
}

body.gnlx-page--light-top .gnlx-nav .gnlx-nav__link {
  color: var(--gnlx-on-light-body);
}

body.gnlx-page--light-top .gnlx-nav .gnlx-nav__logo-img--light {
  display: none;
}
body.gnlx-page--light-top .gnlx-nav .gnlx-nav__logo-img--dark {
  display: block;
}

/* Scrolled state: solid dark for dark-top */
body.gnlx-page--dark-top .gnlx-nav.gnlx-nav--scrolled {
  background: rgba(8, 15, 19, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--gnlx-border-dark);
}

body.gnlx-page--dark-top .gnlx-nav.gnlx-nav--scrolled .gnlx-nav__link {
  color: var(--gnlx-on-dark-body);
}

/* Scrolled state: white for light-top */
body.gnlx-page--light-top .gnlx-nav.gnlx-nav--scrolled {
  background: rgba(244, 247, 245, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--gnlx-border-light);
}

body.gnlx-page--light-top .gnlx-nav.gnlx-nav--scrolled .gnlx-nav__link {
  color: var(--gnlx-on-light-body);
}

.gnlx-nav__inner {
  max-width: var(--gnlx-container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
  display: flex;
  align-items: center;
  gap: 2rem;
}

.gnlx-nav__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.gnlx-nav__logo-img--light,
.gnlx-nav__logo-img--dark {
  height: 36px;
  width: auto;
}

.gnlx-nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-inline-start: auto;
}

.gnlx-nav .gnlx-nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  transition: color var(--gnlx-transition-base), background var(--gnlx-transition-base);
  white-space: nowrap;
}

body.gnlx-page--dark-top .gnlx-nav .gnlx-nav__link:hover {
  color: var(--gnlx-on-dark-heading);
  background: rgba(27, 191, 176, 0.08);
}

body.gnlx-page--light-top .gnlx-nav .gnlx-nav__link:hover {
  color: var(--gnlx-on-light-heading);
  background: rgba(10, 92, 107, 0.06);
}

.gnlx-nav__ctas {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-inline-start: 1rem;
}

/* Hamburger (mobile) */
.gnlx-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-inline-start: auto;
  cursor: pointer;
  border: none;
  background: none;
}

.gnlx-nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  transition: transform var(--gnlx-transition-base), opacity var(--gnlx-transition-base);
}

body.gnlx-page--dark-top .gnlx-nav__hamburger span {
  background: var(--gnlx-on-dark-heading);
}

body.gnlx-page--light-top .gnlx-nav__hamburger span {
  background: var(--gnlx-on-light-heading);
}

.gnlx-nav__hamburger.gnlx-nav__hamburger--open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.gnlx-nav__hamburger.gnlx-nav__hamburger--open span:nth-child(2) {
  opacity: 0;
}
.gnlx-nav__hamburger.gnlx-nav__hamburger--open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav panel */
.gnlx-nav__mobile-panel {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  padding-top: 80px;
  padding-inline: 1.5rem;
  padding-bottom: 2rem;
  overflow-y: auto;
}

body.gnlx-page--dark-top .gnlx-nav__mobile-panel {
  background: var(--gnlx-bg-dark-primary);
}

body.gnlx-page--light-top .gnlx-nav__mobile-panel {
  background: var(--gnlx-bg-light-primary);
}

.gnlx-nav__mobile-panel.gnlx-nav__mobile-panel--open {
  display: flex;
  flex-direction: column;
}

.gnlx-nav__mobile-panel .gnlx-nav__link {
  font-size: 1.25rem;
  font-weight: 500;
  padding: 1rem 0;
  border-bottom: 1px solid var(--gnlx-border-dark);
  display: block;
}

body.gnlx-page--dark-top .gnlx-nav__mobile-panel .gnlx-nav__link {
  color: var(--gnlx-on-dark-heading);
}

body.gnlx-page--light-top .gnlx-nav__mobile-panel .gnlx-nav__link {
  color: var(--gnlx-on-light-heading);
  border-bottom-color: var(--gnlx-border-light);
}

.gnlx-nav__mobile-panel .gnlx-nav__mobile-ctas {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .gnlx-nav__links,
  .gnlx-nav__ctas {
    display: none;
  }
  .gnlx-nav__hamburger {
    display: flex;
  }
}

/* ============================================================
   FOOTER
   ============================================================ */
.gnlx-footer {
  background-color: var(--gnlx-bg-dark-primary);
  border-top: 1px solid var(--gnlx-border-dark);
  padding: 4rem 0 2rem;
  color: var(--gnlx-on-dark-body);
}

.gnlx-footer__inner {
  max-width: var(--gnlx-container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.gnlx-footer__columns {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--gnlx-border-dark);
}

@media (max-width: 768px) {
  .gnlx-footer__columns {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .gnlx-footer__col--brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  .gnlx-footer__columns {
    grid-template-columns: 1fr;
  }
}

.gnlx-footer__col {
  display: flex;
  flex-direction: column;
}

.gnlx-footer__col-heading {
  font-family: var(--gnlx-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gnlx-on-dark-muted);
  margin-bottom: 1.25rem;
}

.gnlx-footer__col-brand-desc {
  font-size: 0.9rem;
  color: var(--gnlx-on-dark-muted);
  margin-top: 0.75rem;
  line-height: 1.55;
}

.gnlx-footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.gnlx-footer__nav-link {
  font-size: 0.9rem;
  color: var(--gnlx-on-dark-body);
  transition: color var(--gnlx-transition-base);
}

.gnlx-footer__nav-link:hover {
  color: var(--gnlx-accent-teal);
}

.gnlx-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.5rem;
}

.gnlx-footer__copyright {
  font-size: 0.8rem;
  color: var(--gnlx-on-dark-muted);
}

.gnlx-footer__legal-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.gnlx-footer__legal-link {
  font-size: 0.8rem;
  color: var(--gnlx-on-dark-muted);
  transition: color var(--gnlx-transition-base);
}

.gnlx-footer__legal-link:hover {
  color: var(--gnlx-on-dark-body);
}

/* ============================================================
   PAGE TOP SPACER (under nav)
   ============================================================ */
.gnlx-nav-spacer {
  height: 80px;
}

/* ============================================================
   MOBILE SECTION PADDING
   ============================================================ */
@media (max-width: 768px) {
  .gnlx-section {
    padding: var(--gnlx-section-pad-mobile);
  }
}