.app-header.app-header--authenticated {
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
    background: var(--color-primary-light);
    border-bottom: 1px solid var(--color-border);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.app-header--authenticated .app-header-inner {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.app-header--authenticated .brand {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.app-header--authenticated .brand-name {
    font-size: 21px;
    font-weight: 750;
    letter-spacing: -0.04em;
    line-height: 1.1;
}

.app-header--authenticated .brand-event { color: var(--color-text); }
.app-header--authenticated .brand-photos { color: var(--color-primary-dark); }

.app-header--authenticated .header-user {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 4px 10px;
    min-width: 0;
}

.app-header--authenticated .logout-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 10px;
    color: var(--color-text);
    font: inherit;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
}

.app-header--authenticated .logout-link:hover {
    color: var(--color-primary-dark);
}

.app-header--authenticated .header-session-name {
    color: var(--color-text-secondary);
    font-size: 12px;
}

.app-header--authenticated .logout-form { margin: 0; }
.app-header--authenticated .logout-button {
    border: 0;
    background: transparent;
    cursor: pointer;
}

.app-header--authenticated a:focus-visible,
.app-header--authenticated button:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
    box-shadow: var(--shadow-focus);
}

@media (max-width: 700px) {
    .app-header--authenticated .app-header-inner {
        padding: 8px 16px;
        flex-wrap: wrap;
        gap: 4px 12px;
    }
    .app-header--authenticated .header-session-name { display: none; }
}

@media (max-width: 460px) {
    .app-header--authenticated .app-header-inner { align-items: flex-start; }
    .app-header--authenticated .header-user {
        width: 100%;
        justify-content: flex-start;
    }
    .app-header--authenticated .logout-link { padding: 8px 6px; }
}