.sf-header {
  position: relative;
  z-index: 100;
  transition: background var(--sf-transition), box-shadow var(--sf-transition), padding var(--sf-transition);
}

.sf-header--sticky {
  position: sticky;
  top: 0;
}

.sf-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 16px;
}

.sf-header--glass.sf-header--scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-1);
}

.sf-nav-glass-on-scroll.is-scrolled {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-1);
}

.sf-header--shrink.sf-header--scrolled .sf-header__inner {
  padding: 10px 0;
}

.sf-logo {
  font-weight: 700;
  font-size: var(--body-m);
  letter-spacing: -0.02em;
}

.sf-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  position: relative;
}

.sf-nav__list {
  list-style: none;
  display: flex;
  gap: 24px;
  margin: 0;
  padding: 0;
  align-items: center;
}

.sf-nav-link {
  font-size: var(--body-s);
  letter-spacing: -0.01em;
  position: relative;
  padding: 6px 0;
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
}

.sf-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.sf-nav-link::after,
.sf-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--sf-transition);
}

.sf-nav-link:hover::after,
.sf-link:hover::after,
.sf-nav-link:focus-visible::after,
.sf-link:focus-visible::after {
  transform: scaleX(1);
}

.sf-nav-caret {
  display: inline-block;
  margin-left: 6px;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-1px);
}

.sf-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sf-button {
  position: relative;
  overflow: hidden;
}

.sf-button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: translateX(-120%);
  transition: transform 0.6s ease;
}

.sf-button:hover::before {
  transform: translateX(120%);
}

.sf-button--primary:hover {
  background: var(--color-primary-hover);
}

.sf-button--ghost:hover {
  background: var(--color-primary-soft);
  border-color: transparent;
}

.sf-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  padding: 8px;
  cursor: pointer;
}

.sf-menu-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  margin: 4px 0;
}

.sf-mega-panel {
  position: absolute;
  left: 0;
  top: 100%;
  width: 100%;
  padding: 24px 0;
  z-index: 90;
}

.sf-mega-panel__inner {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--glass-radius);
  box-shadow: var(--glass-shadow);
  padding: 24px;
  gap: 24px;
}

.sf-mega-panel__title {
  font-size: var(--body-s);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 10px;
  color: var(--color-text-muted);
}

.sf-mega-panel__summary {
  font-size: var(--body-s);
  color: var(--color-text-muted);
}

.sf-mega-panel .sub-menu {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px 24px;
}

.sf-mega-panel--cols-2 .sub-menu {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sf-mega-panel--cols-3 .sub-menu {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sf-mega-panel--cols-4 .sub-menu {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.sf-mega-panel .sub-menu a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--body-s);
  color: var(--color-text);
  position: relative;
}

.sf-text-reveal__word {
  display: inline-block;
  will-change: transform, opacity, filter;
}

.sf-mega-panel[hidden] {
  display: none;
}

.sf-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(90vw, 360px);
  background: var(--color-surface);
  transform: translateX(100%);
  box-shadow: var(--shadow-2);
  z-index: 120;
  transition: transform 0.4s ease;
}

.sf-drawer.is-open {
  transform: translateX(0%);
}

.sf-drawer__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  z-index: 110;
}

.sf-drawer__overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.sf-drawer__inner {
  padding: 32px 24px;
  height: 100%;
  overflow-y: auto;
}

.sf-drawer__menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sf-drawer__menu .sub-menu {
  list-style: none;
  padding-left: 16px;
  margin-top: 8px;
  display: none;
}

.sf-drawer__menu .is-expanded > .sub-menu {
  display: block;
}

.sf-drawer-toggle {
  background: transparent;
  border: none;
  padding: 4px;
  margin-left: 8px;
  cursor: pointer;
}

.sf-nav .sub-menu {
  list-style: none;
  margin: 8px 0 0;
  padding: 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: var(--shadow-1);
}

.sf-nav .menu-item-has-children:not(.sf-has-mega) > .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  display: none;
}

.sf-nav .menu-item-has-children:not(.sf-has-mega) {
  position: relative;
}

.sf-nav .menu-item-has-children:not(.sf-has-mega):hover > .sub-menu,
.sf-nav .menu-item-has-children:not(.sf-has-mega):focus-within > .sub-menu {
  display: block;
}

.sf-footer {
  border-top: 1px solid var(--color-border);
  padding-top: 40px;
}

.sf-footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 24px;
}

.sf-footer__meta {
  color: var(--color-text-muted);
}

.sf-footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sf-footer__legal {
  border-top: 1px solid var(--color-border);
  padding: 16px 0;
  font-size: var(--caption);
  color: var(--color-text-muted);
}

@media (max-width: 960px) {
  .sf-nav {
    display: none;
  }

  .sf-menu-toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .sf-header__inner {
    justify-content: space-between;
  }

  .sf-footer__inner {
    flex-direction: column;
  }
}

.sf-card {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.sf-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
}

.sf-pagination {
  margin-top: 24px;
}