/*
  Layout Styles
  Header, footer, navigation, and page structure
*/

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

.header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-sm);
}

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

.header__logo {
  display: flex;
  align-items: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-dark);
  text-decoration: none;
}

.header__logo:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.header__logo-text {
  margin-left: var(--space-sm);
}

@media (max-width: 768px) {
  .header__logo {
    font-size: var(--font-size-lg);
  }
}


/* ========================================
   NAVIGATION - DESKTOP
   ======================================== */

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

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

.nav__item {
  margin: 0;
}

.nav__link {
  display: block;
  padding: var(--space-xs) var(--space-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition-colors);
  position: relative;
}

.nav__link:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav__link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: var(--space-sm);
  right: var(--space-sm);
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
}

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

/* Contact info in nav */
.nav__contact {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-left: var(--space-lg);
  padding-left: var(--space-lg);
  border-left: 1px solid var(--color-border);
}

.nav__contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.nav__contact-link {
  color: var(--color-accent);
  font-weight: var(--font-weight-medium);
}


/* ========================================
   MOBILE MENU TOGGLE
   ======================================== */

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 30px;
  height: 30px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: var(--z-fixed);
}

.menu-toggle__bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-primary);
  transition: var(--transition-base);
  border-radius: 2px;
}

.menu-toggle.is-active .menu-toggle__bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.menu-toggle.is-active .menu-toggle__bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}


/* ========================================
   NAVIGATION - MOBILE
   ======================================== */

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 280px;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-surface);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    transition: right var(--transition-base);
    overflow-y: auto;
  }

  .nav.is-active {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav__item {
    border-bottom: 1px solid var(--color-border-light);
  }

  .nav__link {
    padding: var(--space-md) 0;
    display: block;
  }

  .nav__link::after {
    display: none;
  }

  .nav__contact {
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
    margin-top: var(--space-lg);
    padding-left: 0;
    padding-top: var(--space-lg);
    border-left: none;
    border-top: 1px solid var(--color-border);
  }

  .nav__contact-item {
    justify-content: flex-start;
  }
}

/* Mobile menu overlay */
.nav-overlay {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height));
  background-color: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-sticky) - 1);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.nav-overlay.is-active {
  display: block;
  opacity: 1;
}

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


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

.footer {
  background-color: var(--color-primary-dark);
  color: var(--color-surface);
  padding: var(--space-2xl) 0 var(--space-lg) 0;
  margin-top: var(--space-4xl);
}

.footer a {
  color: var(--color-surface);
  text-decoration: none;
}

.footer a:hover {
  color: var(--color-accent-light);
  text-decoration: underline;
}

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

@media (max-width: 768px) {
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

.footer__section-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
  color: var(--color-accent-light);
}

.footer__about {
  max-width: 400px;
}

.footer__about p {
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-md);
}

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

.footer__links li {
  margin-bottom: var(--space-sm);
}

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

.footer__contact-info li {
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
}

.footer__bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
  .footer__bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

.footer__copyright {
  color: rgba(255, 255, 255, 0.8);
}

.footer__legal {
  display: flex;
  gap: var(--space-md);
}


/* ========================================
   MAIN CONTENT AREA
   ======================================== */

.main {
  min-height: calc(100vh - var(--header-height) - 400px);
}


/* ========================================
   SKIP TO CONTENT LINK (Accessibility)
   ======================================== */

.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background-color: var(--color-accent);
  color: #FFFFFF;
  padding: var(--space-sm) var(--space-md);
  text-decoration: none;
  z-index: var(--z-modal);
  transition: top var(--transition-base);
}

.skip-to-content:focus {
  top: 0;
}