.header-brand-menu {
  display: inline-flex;
  align-items: center;
  gap: 0;
  min-width: 0;
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-left: 10px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  opacity: 0.7;
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast),
    color var(--transition-fast);
}

.menu-toggle:hover,
.menu-toggle:focus-visible {
  opacity: 1;
  transform: translateY(-1px);
}

.menu-toggle:focus-visible {
  outline: none;
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
  display: block;
}

#drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: min(82vw, 280px);
  height: 100vh;
  padding: 86px 22px 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.72);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.76)),
    linear-gradient(145deg, rgba(255, 255, 255, 0.34), transparent 56%);
  backdrop-filter: blur(22px);
  box-shadow: 20px 0 48px rgba(26, 39, 71, 0.08);
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  z-index: 1000;
}

#drawer.open {
  transform: translateX(0);
}

#drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(17, 24, 39, 0.2);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 999;
}

#drawer-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

body.drawer-open {
  overflow: hidden;
}

.drawer-list,
.drawer-sub {
  margin: 0;
  padding: 0;
  list-style: none;
}

.drawer-list {
  display: grid;
  gap: 10px;
}

.drawer-item {
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.56);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.84),
    0 12px 26px rgba(26, 39, 71, 0.04);
}

.drawer-item[data-link],
.drawer-sub li {
  color: #1d1d1f;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
}

.drawer-item[data-link] {
  padding: 16px 18px;
  font-size: 1rem;
  font-weight: 500;
}

.drawer-item[data-link]:hover,
.drawer-item[data-link]:focus-visible,
.drawer-sub li:hover,
.drawer-sub li:focus-visible,
.drawer-title:hover,
.drawer-title:focus-visible {
  color: var(--color-accent-deep);
}

.drawer-title {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border: none;
  background: transparent;
  color: #1d1d1f;
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}

.drawer-title:focus-visible {
  outline: none;
}

.drawer-sub {
  display: none;
  gap: 6px;
  padding: 0 10px 12px;
}

.drawer-item.expanded .drawer-sub {
  display: grid;
}

.drawer-sub li {
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(245, 248, 255, 0.86);
  font-size: 0.95rem;
  color: var(--color-muted);
}

.arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--color-soft);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.drawer-item.expanded .arrow {
  transform: rotate(180deg);
  color: var(--color-accent-deep);
}

@media (max-width: 900px) {
  #drawer {
    padding-top: 78px;
  }
}