.header .header-content {
    max-width: var(--container-xl);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.topbar-brand {
    min-width: 0;
}

.topbar-logo-link {
    display: inline-flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    color: inherit;
    text-decoration: none;
}

.topbar-controls {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

.guest-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.shell-dropdown {
    position: relative;
}

.language-trigger,
.user-trigger {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-height: 52px;
    border: 1px solid var(--color-gray-300);
    background: linear-gradient(180deg, var(--color-card), var(--color-surface));
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.language-trigger {
    max-width: min(360px, 52vw);
    padding: var(--spacing-sm) var(--spacing-md);
}

.user-trigger {
    padding: var(--spacing-xs);
}

.language-trigger:hover,
.language-trigger:focus-visible,
.user-trigger:hover,
.user-trigger:focus-visible {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-focus-ring);
    outline: none;
    transform: translateY(-1px);
}

.flag-icon {
    width: 28px;
    height: 21px;
    border-radius: 999px;
    object-fit: cover;
    box-shadow: inset 0 0 0 1px rgba(17, 24, 39, 0.08);
    flex-shrink: 0;
}

.flag-placeholder {
    width: 28px;
    height: 21px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    flex-shrink: 0;
}

.language-trigger-label,
.shell-language-label {
    display: inline-block;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.language-trigger-label {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-800);
}

.avatar-shell {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #e7d9a8, #f6efcc);
    color: #6d6133;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.02em;
}

.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.shell-menu-panel {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    right: 0;
    display: none;
    min-width: 240px;
    max-height: 360px;
    overflow-y: auto;
    padding: var(--spacing-sm);
    border: 1px solid rgba(17, 24, 39, 0.08);
    border-radius: var(--radius-xl);
    background-color: var(--color-card);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
}

.language-menu-panel {
    min-width: min(360px, 84vw);
}

.shell-menu-panel.is-open {
    display: grid;
    gap: var(--spacing-xs);
}

.shell-menu-item {
    width: 100%;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.85rem 0.95rem;
    border: 0;
    border-radius: var(--radius-lg);
    background: transparent;
    color: var(--color-gray-800);
    font-size: var(--font-size-base);
    text-align: left;
    cursor: pointer;
    transition: background-color var(--transition-base), transform var(--transition-base);
}

.shell-menu-icon {
    width: 1.125rem;
    height: 1.125rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-500);
    flex-shrink: 0;
}

.shell-menu-icon svg {
    width: 100%;
    height: 100%;
}

.shell-menu-label {
    min-width: 0;
}

.shell-menu-item:hover,
.shell-menu-item:focus-visible {
    background-color: var(--color-primary-subtle);
    outline: none;
    transform: translateX(2px);
}

.shell-language-item.is-selected {
    background-color: var(--color-primary-subtle);
    color: var(--color-primary-dark);
}

@media (max-width: 768px) {
    .header .header-content {
        flex-direction: column;
        align-items: stretch;
    }

    .topbar-brand {
        text-align: center;
    }

    .topbar-controls {
        justify-content: center;
        flex-wrap: wrap;
    }

    .language-trigger {
        max-width: min(100%, 420px);
    }
}