/* ==========================================================================
   Sol Genesys — Layout
   --------------------------------------------------------------------------
   1. Header and navigation
   2. Mobile menu
   3. Sections and section headings
   4. Page header (top of inner pages)
   5. Column layouts
   6. Footer
   ========================================================================== */

/* 1. Header and navigation ------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: var(--header-height);
}

/* Logo mark + "SOL GENESYS" */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-right: auto;
  color: var(--color-text);
}

.brand__mark {
  width: 2.25rem;
  height: 2.25rem;
}

.brand__name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-nav {
  display: none;
}

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

.site-nav__link {
  position: relative;
  padding-block: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--duration) ease;
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-text);
}

/* Underline marks the current page */
.site-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--color-accent-text);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Two class names so this beats the .btn display rule in components.css */
.site-header__actions .site-header__cta {
  display: none;
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
}

.menu-toggle .icon {
  width: 1.5rem;
  height: 1.5rem;
}

.menu-toggle__close {
  display: none;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__open {
  display: none;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__close {
  display: block;
}

@media (min-width: 640px) {
  .site-header__actions .site-header__cta {
    display: inline-flex;
  }
}

@media (min-width: 1024px) {
  .site-nav {
    display: block;
  }

  .menu-toggle {
    display: none;
  }
}

/* 2. Mobile menu ----------------------------------------------------------- */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  z-index: 60;
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding-block: var(--space-2) var(--space-6);
}

.mobile-nav__link {
  display: block;
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

.mobile-nav__link[aria-current="page"] {
  color: var(--color-accent-text);
}

@media (min-width: 1024px) {
  .mobile-nav {
    display: none !important;
  }
}

/* 3. Sections and section headings ---------------------------------------- */
.site-main {
  padding-top: var(--header-height);
}

.section {
  padding-block: var(--section-y);
}

/* A thin rule between consecutive sections */
.section + .section {
  border-top: 1px solid var(--color-border);
}

.section-head {
  max-width: 40rem;
  margin-bottom: var(--space-7);
}

.section-head h2 {
  font-size: var(--text-h2);
}

.section-head p {
  margin-top: var(--space-3);
  font-size: var(--text-lg);
}

/* Small uppercase label above a heading (echoes "SOLUTIONS" in the logo) */
.label {
  display: block;
  margin-bottom: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

/* 4. Page header (top of inner pages) ------------------------------------- */
.page-head {
  padding-block: var(--space-8) var(--space-7);
  border-bottom: 1px solid var(--color-border);
}

.page-head h1 {
  max-width: 46rem;
  font-size: var(--text-h1);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
}

.page-head p {
  max-width: 40rem;
  margin-top: var(--space-4);
  font-size: var(--text-lg);
}

.page-head .note {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
}

/* 5. Column layouts -------------------------------------------------------- */

/* Heading on the left, content on the right (stacks on smaller screens) */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-5) var(--space-8);
}

@media (min-width: 1024px) {
  .split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  }
}

.split__head h2 {
  font-size: var(--text-h2);
}

.split__head p {
  margin-top: var(--space-3);
}

/* Equal columns, each starting with a rule */
.columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .columns--2,
  .columns--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .columns--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .columns--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.column {
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border-strong);
}

.column h3 {
  font-size: var(--text-h3);
}

.column p {
  margin-top: var(--space-3);
}

/* 6. Footer ---------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  padding-block: var(--space-8) var(--space-7);
}

@media (min-width: 768px) {
  .site-footer__inner {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr);
  }
}

.site-footer__about {
  max-width: 22rem;
  margin-top: var(--space-4);
}

.site-footer__heading {
  margin-bottom: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-label);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

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

.site-footer__list a:hover {
  color: var(--color-text);
}

.site-footer__email {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block: var(--space-5);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-subtle);
}

.site-footer__bottom a:hover {
  color: var(--color-text);
}