.site-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 264px;
  background:
    linear-gradient(180deg, rgba(15, 20, 30, 0.98), rgba(9, 12, 20, 0.98));
  border-right: 1px solid rgba(126, 191, 235, 0.22);
  z-index: 260;
  display: flex;
  flex-direction: column;
  transition: width 0.24s ease;
  overflow: hidden;
}

.site-sidebar-inner {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.75rem 0.6rem 0.9rem;
}

.site-sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.4rem 0.45rem 0.55rem;
  border-bottom: 1px solid rgba(126, 191, 235, 0.14);
}

.site-sidebar-logo {
  width: 44px;
  height: 44px;
  border-radius: 0.65rem;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.28rem;
  flex-shrink: 0;
}

.site-sidebar-brand-text {
  font-size: 0.98rem;
  font-weight: 700;
  color: #e8f6ff;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.site-sidebar-section-title {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8fb3c9;
  margin: 0.2rem 0.4rem 0;
}

.site-sidebar-dropdown {
  padding: 0 0.3rem 0.2rem;
}

.site-sidebar-dropdown .header-nav-select-wrap {
  display: block;
  min-width: 0;
}

.site-sidebar-dropdown .header-nav-select {
  width: 100%;
}

.site-sidebar-nav {
  display: grid;
  gap: 0.18rem;
  padding: 0.05rem 0.1rem 0.2rem;
}

.site-sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.72rem;
  min-height: 44px;
  border-radius: 0.7rem;
  padding: 0.52rem 0.66rem;
  color: #e6f5ff;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.site-sidebar-link:hover {
  background: rgba(64, 127, 170, 0.18);
  border-color: rgba(126, 191, 235, 0.32);
}

.site-sidebar-link.active {
  background: linear-gradient(145deg, rgba(74, 126, 167, 0.42), rgba(52, 92, 126, 0.34));
  border-color: rgba(190, 225, 255, 0.28);
}

.site-sidebar-link .nav-icon {
  width: 1.3rem;
  height: 1.3rem;
}

.site-sidebar-link .nav-icon svg {
  width: 1rem;
  height: 1rem;
}

.site-sidebar-link .nav-icon img {
  width: 1rem;
  height: 1rem;
  object-fit: contain;
  display: block;
}

.site-sidebar-label {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
}

.site-sidebar-spacer {
  flex: 1;
}

.site-sidebar-overlay {
  display: none;
}

body.has-sidebar {
  padding-left: 264px;
  transition: padding-left 0.24s ease;
}

body.has-sidebar.sidebar-collapsed {
  padding-left: 78px;
}

body.has-sidebar.sidebar-collapsed .site-sidebar {
  width: 78px;
}

body.has-sidebar.sidebar-collapsed .site-sidebar-brand-text,
body.has-sidebar.sidebar-collapsed .site-sidebar-label,
body.has-sidebar.sidebar-collapsed .site-sidebar-section-title,
body.has-sidebar.sidebar-collapsed .site-sidebar-dropdown {
  display: none;
}

body.has-sidebar.sidebar-collapsed .site-sidebar-link {
  justify-content: center;
  padding: 0.45rem;
}

body.has-sidebar.sidebar-collapsed .site-sidebar-brand {
  justify-content: center;
}

.header-menu .sidebar-toggle-btn {
  min-height: 38px;
  min-width: 42px;
  padding: 0.4rem 0.62rem;
  background: rgba(11, 24, 40, 0.62);
  border: 1px solid rgba(78, 205, 196, 0.24);
  border-radius: 0.62rem;
  color: #e8f6ff;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  transition: all 0.22s ease;
}

.header-menu .sidebar-toggle-btn:hover {
  color: #ffe8e8;
  border-color: rgba(255, 107, 107, 0.34);
  background: rgba(255, 107, 107, 0.12);
}

@media (max-width: 920px) {
  body.has-sidebar {
    padding-left: 64px;
  }

  body.has-sidebar.sidebar-open {
    overflow: hidden;
  }

  .site-sidebar {
    width: 64px;
  }

  .site-sidebar-link {
    justify-content: center;
    padding: 0.45rem;
  }

  .site-sidebar-brand {
    justify-content: center;
  }

  .site-sidebar-brand-text,
  .site-sidebar-label,
  .site-sidebar-section-title,
  .site-sidebar-dropdown {
    display: none;
  }

  body.has-sidebar.sidebar-open .site-sidebar {
    width: min(86vw, 260px);
  }

  body.has-sidebar.sidebar-open .site-sidebar-brand {
    justify-content: flex-start;
  }

  body.has-sidebar.sidebar-open .site-sidebar-brand-text,
  body.has-sidebar.sidebar-open .site-sidebar-label,
  body.has-sidebar.sidebar-open .site-sidebar-section-title,
  body.has-sidebar.sidebar-open .site-sidebar-dropdown {
    display: block;
  }

  body.has-sidebar.sidebar-open .site-sidebar-link {
    justify-content: flex-start;
    padding: 0.52rem 0.66rem;
  }

  .site-sidebar-overlay {
    position: fixed;
    inset: 0;
    z-index: 250;
    background: rgba(4, 8, 14, 0.52);
  }

  body.has-sidebar.sidebar-open .site-sidebar-overlay {
    display: block;
  }
}