/* Site-wide vertical navigation menu */
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: #f7f9fb;
  color: #1f2937;
}

.site-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 200px;
  min-height: 100vh;
  padding: 24px 24px 24px 24px;
  background-color: #d0d4d8;
  background-image:
    linear-gradient(90deg, rgba(255,255,255,0.55) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0.55) 100%),
    linear-gradient(180deg, rgba(255,255,255,0.15) 0%, rgba(0,0,0,0.05) 100%),
    linear-gradient(90deg, rgba(255,255,255,0.08) 0%, rgba(0,0,0,0.08) 100%);
  background-size: 100% 2px, 100% 100%, 100% 10px;
  background-repeat: repeat-x, no-repeat, repeat-x;
  color: #1f2937;
  box-shadow: 2px 0 12px rgba(0, 0, 0, 0.12);
  position: relative;
}

.site-menu::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 7px;
  height: 100%;
  background: linear-gradient(180deg, rgba(117,75,201,0.30) 0%, rgba(103,64,163,0.20) 50%, rgba(136,87,211,0.30) 100%);
  box-shadow: inset -1px 0 3px rgba(255, 255, 255, 0.12), inset 1px 0 4px rgba(0, 0, 0, 0.12), 0 0 14px rgba(153, 102, 255, 0.07);
  border-left: 1px solid rgba(255, 255, 255, 0.20);
  border-right: 1px solid rgba(0, 0, 0, 0.10);
  z-index: 1000;
  display: flex;
  flex-direction: column;
}

.site-menu .menu-title {
  margin: 0 0 18px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-menu .menu-title {
  margin: 0 0 18px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-menu nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-menu a {
  display: block;
  padding: 10px 14px;
  color: #0f2f66;
  background: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  border: 1px solid #8797b2;
  border-radius: 8px;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.site-menu a:hover,
.site-menu a:focus {
  background: #00d2ff;
  color: #0f2f66;
}

.site-menu a.active {
  background: #2563eb;
  color: #ffffff;
  border: 1px solid #ffffff;
}

.site-menu .menu-divider {
  margin: 18px 0 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.site-menu .lang-switcher {
  margin-top: 0;
  margin-bottom: 20px;
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.9rem;
  color: #0f2f66;
}

.site-menu .lang-switcher .lang-link {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 6px 8px;
  color: #0f2f66;
  text-decoration: none;
  border: 1px solid #8797b2;
  border-radius: 6px;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.site-menu .lang-switcher .lang-link img {
  width: 18px;
  height: 18px;
  display: block;
  object-fit: contain;
}

.site-menu .lang-switcher .lang-link:hover,
.site-menu .lang-switcher .lang-link:focus {
  background: #00d2ff;
  color: #0f2f66;
}

.site-menu .lang-switcher .lang-label {
  margin-left: 6px;
  font-size: 0.88rem;
  color: #2248d3;
}

.main-content {
  margin-left: 220px;
  padding: 30px 24px;
}

@media (max-width: 960px) {
  .site-menu {
    position: relative;
    width: 100%;
    min-height: auto;
    box-shadow: none;
    padding: 16px 12px;
  }

  .site-menu nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .site-menu a {
    flex: 1 1 calc(50% - 8px);
    text-align: center;
  }

  .main-content {
    margin-left: 0;
    padding-top: 0;
  }
}