/**
 * ISIT-Neperis Website - Layout Styles
 * Header, Footer, Grid Systems, Page Layouts
 */

/* ============================================
   HEADER
   ============================================ */

.header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-white);
  border-bottom: var(--border-width) solid var(--color-gray-200);
  z-index: var(--z-index-sticky);
  transition: all var(--transition-base);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--spacing-lg);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header.scrolled .header__container {
  height: var(--header-height-sticky);
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark);
  text-decoration: none;
}

/* Logo image sits to the left of the brand text */
.header__logo-img {
  height: 46px;
  width: auto;
  max-width: none;
  display: block;
}
.header__logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  color: var(--color-dark);
}
/* Two-tone wordmark: dark brand name + blue suffix (matches logo example) */
.header__logo-text-a { color: var(--color-dark); }
.header__logo-text-b { color: var(--color-primary); }
.header__logo:hover .header__logo-text-a,
.header__logo:hover .header__logo-text-b { color: var(--color-primary); }

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

/* ============================================
   DARK HEADER / MENU BAR
   ============================================ */
.header {
  background-color: #0A203E;
  border-bottom: var(--border-width) solid rgba(255, 255, 255, 0.10);
}
.header .header__logo,
.header .header__logo-text,
.header .header__logo-text-a { color: #ffffff; }
.header .header__logo-text-b { color: #4aa3ff; }
.header .header__logo:hover .header__logo-text-a,
.header .header__logo:hover .header__logo-text-b { color: #4aa3ff; }
.header__nav .nav__link { color: #ffffff; }
.header__nav .nav__link:hover,
.header__nav .nav__link.active { color: #4aa3ff; }
.header .mobile-menu-toggle__line { background-color: #ffffff; }
/* Dropdown mega-menu panels keep their light background, so force dark text inside */
.header__nav .mega-menu { color: var(--color-gray-800); }

/* Navigation */
.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 1;
  justify-content: flex-end;
}

/* ============================================
   HEADER SEARCH (core WordPress search; icon expands the field)
   ============================================ */
.nav__item--search { position: relative; }
.nav__search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm);
  background: none;
  border: none;
  color: #ffffff;
  cursor: pointer;
  transition: color var(--transition-fast);
}
.nav__search-toggle:hover,
.nav__item--search.is-open .nav__search-toggle { color: #4aa3ff; }
.nav__search-toggle svg { width: 20px; height: 20px; display: block; }
.nav__search-form {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 300px;
  padding: 6px;
  background-color: var(--color-white);
  border: var(--border-width) solid var(--color-gray-200);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: var(--z-index-dropdown, 1000);
}
.nav__item--search.is-open .nav__search-form {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.nav__search-form input[type="search"] {
  flex: 1;
  min-width: 0;
  padding: 8px 10px;
  border: none;
  outline: none;
  background: transparent;
  color: var(--color-gray-800);
  font-size: var(--font-size-sm);
}
.nav__search-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 10px;
  background-color: var(--color-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
}
.nav__search-submit svg { width: 16px; height: 16px; display: block; }
/* On mobile the field shows inline within the stacked menu */
@media (max-width: 1024px) {
  .nav__search-form {
    position: static;
    margin-top: var(--spacing-sm);
    opacity: 1;
    visibility: visible;
    transform: none;
    min-width: 0;
    width: 100%;
  }
  .nav__search-toggle { display: none; }
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__item {
  position: relative;
  margin: 0;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-800);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.nav__link.active {
  color: var(--color-primary);
}

/* Dropdown Icon */
.nav__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.nav__item:hover .nav__link svg {
  transform: rotate(180deg);
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  border: var(--border-width) solid var(--color-gray-200);
  border-radius: var(--border-radius-md);
}

.lang-switcher__btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-600);
  background: none;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-switcher__btn:hover,
.lang-switcher__btn.active {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--spacing-sm);
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle__line {
  width: 24px;
  height: 2px;
  background-color: var(--color-dark);
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active .mobile-menu-toggle__line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active .mobile-menu-toggle__line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .mobile-menu-toggle__line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ============================================
   MEGA MENU / DROPDOWN
   ============================================ */

.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-white);
  border: var(--border-width) solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-xl);
  min-width: 600px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  margin-top: var(--spacing-md);
}

/* Keep the panel open while hovering the trigger, the panel itself, or via keyboard focus. */
.nav__item:hover .mega-menu,
.nav__item:focus-within .mega-menu,
.mega-menu:hover {
  opacity: 1;
  visibility: visible;
}

/* Invisible bridge across the visual gap so moving from the title to the
   panel never crosses a dead (non-hoverable) zone that would hide the menu. */
.mega-menu::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 100%;
  height: calc(var(--spacing-md) + 4px);
}

.mega-menu__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
}

.mega-menu__section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mega-menu__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-sm);
}

.mega-menu__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mega-menu__list li {
  margin: 0;
}

.mega-menu__link {
  display: block;
  padding: var(--spacing-sm) 0;
  color: var(--color-gray-800);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
}

.mega-menu__link:hover {
  color: var(--color-primary);
  padding-left: var(--spacing-sm);
}

.mega-menu__link--sub {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  padding-left: var(--spacing-md);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background-color: var(--color-gray-800);
  color: var(--color-gray-200);
  padding: var(--spacing-4xl) 0 var(--spacing-xl) 0;
  margin-top: var(--spacing-5xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

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

.footer__logo {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.footer__tagline {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  margin: 0;
}

.footer__section-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__list li {
  margin-bottom: var(--spacing-sm);
}

.footer__link {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  border-top: var(--border-width) solid var(--color-gray-600);
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer__copyright {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  margin: 0;
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer__social-link {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__social-link:hover {
  color: var(--color-white);
}

/* ============================================
   GRID SYSTEMS
   ============================================ */

.grid {
  display: grid;
  gap: var(--spacing-xl);
}

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

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

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

.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Flex Utilities */
.flex {
  display: flex;
}

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

.flex--between {
  justify-content: space-between;
}

.flex--gap {
  gap: var(--spacing-md);
}

/* ============================================
   SECTION LAYOUTS
   ============================================ */

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

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

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

.section__header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-3xl) auto;
}

.section__title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
}

.section--dark .section__subtitle {
  color: var(--color-gray-400);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  position: relative;
  padding: var(--spacing-5xl) 0;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-white) 100%);
  overflow: hidden;
}

.hero__container {
  position: relative;
  z-index: 2;
}

.hero__content {
  max-width: 700px;
  margin-bottom: var(--spacing-3xl);
}

.hero__title {
  font-size: var(--font-size-6xl);
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  color: var(--color-dark);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-2xl);
  line-height: var(--line-height-relaxed);
}

.hero__actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero__image {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 50%;
  height: 100%;
  opacity: 0.1;
  z-index: 1;
}

/* ============================================
   DARK HERO VARIANT (homepage)
   ============================================ */

/* Homepage: let the full-bleed hero sit flush under the header (removes the white gap) */
.home #main-content {
  padding-top: 0;
}

.hero--dark {
  position: relative;
  background-color: #071426;
  /* background-image is set inline in front-page.php from the Media Library (dynamic URL) */
  background-size: cover;
  background-position: center right;
  background-repeat: no-repeat;
  color: var(--color-white);
  padding: var(--spacing-5xl) 0;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* Left-to-right dark overlay so the copy stays legible over the photo */
.hero--dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 22, 42, 0.96) 0%, rgba(8, 22, 42, 0.86) 30%, rgba(8, 22, 42, 0.5) 58%, rgba(8, 22, 42, 0.15) 100%);
  z-index: 0;
}

.hero--dark .hero__container {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
}

.hero--dark .hero__content {
  max-width: 620px;
  margin-bottom: 0;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #4aa3ff;
  margin-bottom: var(--spacing-lg);
}

.hero__eyebrow::before {
  content: "";
  display: inline-block;
  width: 34px;
  height: 2px;
  background: #4aa3ff;
  flex: none;
}

.hero--dark .hero__title {
  color: var(--color-white);
  font-size: var(--font-size-6xl);
  line-height: 1.04;
  margin-bottom: var(--spacing-xl);
}

.hero__title-line1 { display: block; color: var(--color-white); }
.hero__title-line2 { display: block; color: #4aa3ff; }

.hero--dark .hero__subtitle {
  color: rgba(255, 255, 255, 0.74);
  font-size: var(--font-size-lg);
  max-width: 48ch;
}

.hero--dark .btn--outline {
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.05);
}

.hero--dark .btn--outline:hover,
.hero--dark .btn--outline:focus {
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--color-white);
}

.hero__stats {
  list-style: none;
  margin: var(--spacing-2xl) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md) var(--spacing-2xl);
}

.hero__stat {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
}

.hero__stat::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #37d67a;
  flex: none;
}

/* Photo is now the section background, so the inline image is not rendered */
.hero--dark .hero__image { display: none; }

@media (max-width: 900px) {
  .hero--dark {
    min-height: 480px;
    background-position: 72% center;
  }
  .hero--dark .hero__content { max-width: none; }
}

@media (max-width: 767px) {
  .hero--dark {
    min-height: 420px;
  }
  .hero--dark::before {
    background: linear-gradient(90deg, rgba(8, 22, 42, 0.95) 0%, rgba(8, 22, 42, 0.82) 100%);
  }
}

/* ============================================
   TWO-COLUMN LAYOUTS
   ============================================ */

.two-column {
  display: grid;
  grid-template-columns: 3fr 2fr; /* 60/40 ratio via fr so the gap is accounted for and columns never overflow */
  gap: var(--spacing-3xl);
  align-items: start;
}
/* Let grid children shrink instead of overflowing when content is wide. */
.two-column > *,
.two-column--reverse > *,
.two-column--equal > * { min-width: 0; }

.two-column--reverse {
  grid-template-columns: 2fr 3fr;
}

.two-column--equal {
  grid-template-columns: 1fr 1fr;
}

/* ============================================
   RESPONSIVE LAYOUTS
   ============================================ */

@media (max-width: 1023px) {
  .header__nav {
    display: none;
  }

  .header__nav.mobile-active {
    display: flex;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-xl);
    overflow-y: auto;
    align-items: flex-start;
  }

  .nav__list {
    flex-direction: column;
    width: 100%;
    align-items: flex-start;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .mega-menu {
    position: static;
    transform: none;
    min-width: auto;
    width: 100%;
    opacity: 1;
    visibility: visible;
    margin-top: var(--spacing-md);
    display: none;
  }

  .nav__item:hover .mega-menu {
    display: block;
  }

  /* Desktop hover-bridge not needed on mobile (tap, not hover). */
  .mega-menu::before {
    content: none;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }

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

  .two-column,
  .two-column--reverse,
  .two-column--equal {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .hero__title {
    font-size: var(--font-size-4xl);
  }

  .hero__subtitle {
    font-size: var(--font-size-lg);
  }
}

@media (max-width: 767px) {
  .section {
    padding: var(--spacing-2xl) 0;
  }

  .hero {
    padding: var(--spacing-3xl) 0;
  }

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
  }
}