/* ==========================================================================
   Next Sales Landing Page - Layout
   Header, Footer, Grid System, Sections
   ========================================================================== */

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background-color: rgba(255, 255, 255, 0.9);
  /* Transparent base */
  backdrop-filter: blur(12px);
  /* Glassmorphism */
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  transition: all var(--transition-normal);
}

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

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 var(--spacing-4);
  max-width: var(--container-max);
  margin: 0 auto;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-secondary);
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: var(--font-weight-bold);
}

/* Desktop Navigation */
.nav {
  display: none;
}

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

.nav__link {
  display: block;
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-600);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
  background-color: var(--color-gray-50);
}

.nav__cta {
  margin-left: var(--spacing-4);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: var(--spacing-2);
  cursor: pointer;
}

.menu-toggle__bar {
  width: 24px;
  height: 2px;
  background-color: var(--color-secondary);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle.active .menu-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle.active .menu-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-white);
  z-index: var(--z-fixed);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  overflow-y: auto;
}

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

.mobile-nav__list {
  padding: var(--spacing-4);
}

.mobile-nav__link {
  display: block;
  padding: var(--spacing-4);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
  transition: color var(--transition-fast);
}

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

.mobile-nav__cta {
  margin: var(--spacing-6) var(--spacing-4);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--color-secondary);
  color: var(--color-white);
  padding: var(--spacing-12) 0 var(--spacing-6);
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.footer__grid {
  display: grid;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-8);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
}

.footer__logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
}

.footer__tagline {
  color: var(--color-gray-300);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.footer__section-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-4);
  color: var(--color-gray-400);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.footer__link {
  color: var(--color-gray-300);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

.footer__social {
  display: flex;
  gap: var(--spacing-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-secondary-light);
  border-radius: var(--radius-full);
  color: var(--color-white);
  transition: background-color var(--transition-fast);
}

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

.footer__bottom {
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--color-secondary-light);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  text-align: center;
}

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

.footer__legal {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
}

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

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

/* --------------------------------------------------------------------------
   Main Content
   -------------------------------------------------------------------------- */
.main {
  margin-top: 64px;
  /* Header height */
  min-height: calc(100vh - 64px);
}

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */
.section {
  padding: var(--spacing-12) 0;
}

.section--gray {
  background-color: var(--color-gray-50);
}

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

.section--dark h2,
.section--dark h3 {
  color: var(--color-white);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-10);
}

.section__title {
  margin-bottom: var(--spacing-4);
}

.section__subtitle {
  color: var(--color-gray-500);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

.section--dark .section__subtitle {
  color: var(--color-gray-300);
}

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

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

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

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

/* --------------------------------------------------------------------------
   Responsive Layout
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  .header__inner {
    padding: 0 var(--spacing-6);
  }

  .nav {
    display: flex;
    align-items: center;
  }

  .menu-toggle {
    display: none;
  }

  .mobile-nav {
    display: none;
  }

  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }

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

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

  .section {
    padding: var(--spacing-16) 0;
  }
}

@media (min-width: 1024px) {
  .header__inner {
    padding: 0 var(--spacing-8);
  }

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

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

  .section {
    padding: var(--spacing-20) 0;
  }
}