/* ---------- HEADER ---------- */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: var(--dar-header-bg);
  backdrop-filter: blur(var(--dar-blur-md));
  border-bottom: 1px solid var(--dar-border-subtle);
  z-index: 50;
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--dar-header-height);
  padding-top: var(--dar-space-md);
  padding-bottom: var(--dar-space-md);
}
.logo-link {
  display: flex;
  align-items: center;
  gap: var(--dar-space-sm);
  text-decoration: none;
}
.logo-link .example-subtitle,
.logo-subtitle {
  background: var(--dar-gradient-text);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  text-decoration: none;
}
.logo-subtitle {
  font-size: var(--dar-text-body-lg);
  font-weight: var(--dar-fw-semibold);
}
@media (max-width: 640px) {
  .logo-link {
    flex-wrap: wrap;
    row-gap: 0;
    align-items: flex-start;
  }
  .logo-link .example-subtitle {
    flex-basis: 100%;
    margin-left: 0;
  }
}
.logo-img {
  display: block;
  width: auto;
  height: var(--dar-space-xl);
  object-fit: contain;
}
.nav-links {
  display: flex;
  gap: var(--dar-space-xl);
}
.nav-links a,
.mobile-nav-panel a {
  position: relative;
  text-decoration: none;
  transition: var(--dar-transition-fast);
}
.nav-links a {
  color: var(--dar-text-secondary);
  font-size: var(--dar-text-nav);
}
.nav-links a:hover {
  color: var(--dar-text-primary);
}
.nav-links a,
.mobile-nav-panel a,
.nav-links a:hover,
.mobile-nav-panel a:hover,
.nav-links a.active,
.mobile-nav-panel a.active {
  text-decoration: none !important;
}
.nav-links a.active::after,
.nav-links a:not(.active):hover::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: var(--dar-underline-height);
  background: var(--dar-underline-gradient);
  border-radius: 2px;
  pointer-events: none;
}

.nav-links a:not(.active):hover::after {
  opacity: 0.4;
}
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--dar-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ---------- МОБИЛЬНАЯ ПАНЕЛЬ ---------- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: block; }
  .mobile-nav-panel {
    position: absolute;
    top: 100%;
    right: 0;
    width: auto;
    min-width: var(--dar-mobile-panel-min-width);
    max-width: 80vw;
    background: var(--dar-mobile-nav-bg);
    backdrop-filter: blur(var(--dar-blur-md));
    border: 1px solid var(--dar-border-subtle);
    border-top: none;
    border-radius: 0 0 var(--dar-radius-lg) var(--dar-radius-lg);
    box-shadow: var(--dar-shadow-lg);
    padding: 0 var(--dar-space-md);
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height var(--dar-transition-mobile-duration) var(--dar-transition-mobile-ease), opacity var(--dar-transition-mobile-opacity) var(--dar-transition-mobile-ease), padding var(--dar-transition-mobile-opacity) var(--dar-transition-mobile-ease);
    visibility: hidden;
    z-index: 100;
  }
  .mobile-nav-panel.open {
    max-height: var(--dar-mobile-panel-max-height-open);
    opacity: 1;
    visibility: visible;
    padding: var(--dar-space-md);
  }
  .mobile-nav-panel a {
    display: block;
    padding: var(--dar-space-sm) var(--dar-space-md);
    border-radius: var(--dar-radius-sm);
    color: var(--dar-text-primary);
    text-decoration: none;
    font-size: var(--dar-text-nav);
    white-space: nowrap;
  }
  .mobile-nav-panel a:hover,
  .mobile-nav-panel a.active {
    background: var(--dar-bg-hover-subtle);
  }
  .mobile-nav-panel a.active::after {
    content: '';
    display: block;
    width: 100%;
    height: var(--dar-underline-height);
    background: var(--dar-underline-gradient);
    margin-top: 4px;
  }
}
@media (min-width: 769px) {
  .mobile-menu-btn,
  .mobile-nav-panel {
    display: none !important;
  }
}