/* === Container === */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* === Section === */
.section {
  padding-block: var(--space-section);
}

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

.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section__title {
  font-size: var(--font-size-section-title);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-xs);
  position: relative;
}

.section__subtitle {
  font-family: var(--font-english), var(--font-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: block;
  margin-bottom: var(--space-xs);
}

.section__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 640px;
  margin-inline: auto;
}

/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background-color: rgba(247, 245, 243, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: box-shadow var(--duration-normal) var(--ease-out-cubic),
              height var(--duration-normal) var(--ease-out-cubic);
}

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

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  z-index: 1001;
}

.header__logo img {
  height: 28px;
  width: auto;
  border-radius: 0;
}

.header__logo-mark {
  height: 36px !important;
  width: 36px !important;
  margin-right: 6px;
}

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

.header__nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  position: relative;
  padding-block: var(--space-xs);
  transition: color var(--duration-fast) var(--ease-out-cubic);
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--duration-normal) var(--ease-out-expo);
}

.header__nav-link:hover::after,
.header__nav-link--active::after {
  width: 100%;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-inverse);
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
  transition: background-color var(--duration-fast) var(--ease-out-cubic),
              transform var(--duration-fast) var(--ease-out-cubic);
}

.header__cta:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
}

/* Mobile menu toggle */
.header__menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  z-index: 1001;
}

.header__menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--duration-normal) var(--ease-out-expo),
              opacity var(--duration-fast);
}

.header__menu-toggle--open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__menu-toggle--open span:nth-child(2) {
  opacity: 0;
}

.header__menu-toggle--open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.header__mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(250, 248, 242, 0.98);
  backdrop-filter: blur(12px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out-cubic);
}

.header__mobile-nav--open {
  display: flex;
  opacity: 1;
}

.header__mobile-nav-link {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  padding: var(--space-xs) var(--space-sm);
}

/* === Footer === */
.footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
  padding-block: var(--space-2xl) var(--space-lg);
}

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

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__logo img {
  height: 28px;
  width: auto;
  border-radius: 0;
}

.footer__tagline {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
}

.footer__heading {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
  color: rgba(255, 255, 255, 0.9);
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer__nav-link {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--duration-fast);
}

.footer__nav-link:hover {
  color: var(--color-text-inverse);
}

.footer__company-info {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  line-height: var(--line-height-loose);
}

.footer__bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__copyright {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.5);
}

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

.footer__bottom-link {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--duration-fast);
}

.footer__bottom-link:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* === Page Top Button === */
.page-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--duration-normal) var(--ease-out-cubic),
              visibility var(--duration-normal),
              transform var(--duration-normal) var(--ease-out-cubic),
              background-color var(--duration-fast);
  z-index: 900;
}

.page-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.page-top:hover {
  background-color: var(--color-primary-light);
}

/* === Responsive === */
@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
  }

  .header {
    height: var(--header-height-mobile);
  }

  .header__nav {
    display: none;
  }

  .header__cta {
    display: none;
  }

  .header__menu-toggle {
    display: flex;
  }

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

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}