.top-app-bar {
    position: relative; z-index: 50; flex: 0 0 auto;
    height: 72px; padding: 0 20px;
    display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 20px;
    background: var(--md-primary); color: var(--md-on-primary);
    box-shadow: 0 2px 8px var(--md-shadow);
}
.top-app-bar .logo { display: flex; align-items: center; gap: 10px; text-decoration: none; min-width: 0; }
.top-app-bar .logo img { width: 38px; height: 38px; border-radius: 12px; object-fit: cover; }
.top-app-bar .logo span { display: flex; flex-direction: column; min-width: 0; }
.top-app-bar .logo strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.top-app-bar .logo small { opacity: .76; font-size: .72rem; }
.nav { display: flex; align-items: stretch; height: 100%; gap: 4px; overflow-x: auto; }
.nav__tab { min-width: max-content; display: flex; align-items: center; padding: 0 16px; position: relative; font-weight: 700; text-decoration: none; opacity: .82; transition: opacity 160ms ease, background 160ms ease, transform 180ms cubic-bezier(.2,0,0,1); }
.nav__tab:hover, .nav__tab.router-link-active { opacity: 1; background: rgba(255,255,255,.08); }
.nav__tab:active { transform: scale(.97); }
.nav__tab.router-link-active::after { content: ''; position: absolute; left: 16px; right: 16px; bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--md-on-primary); }
.nav__actions { display: flex; align-items: center; gap: 6px; }
.icon-button.on-primary { color: var(--md-on-primary); }
.icon-button.on-primary:hover { background: rgba(255,255,255,.12); }
.icon-button.on-primary img { width: 22px; height: 22px; }
.discord-button { background: color-mix(in srgb, var(--md-primary) 65%, #000 35%) !important; box-shadow: 0 1px 5px var(--md-shadow); }
.discord-button:hover { background: color-mix(in srgb, var(--md-primary) 78%, #000 22%) !important; box-shadow: 0 2px 9px var(--md-shadow); }
.md-button.admin-button, .md-button.submit-record { background: var(--md-on-primary); color: var(--md-primary); }
@media (max-width: 900px) {
    .top-app-bar { height: auto; min-height: 68px; grid-template-columns: 1fr auto; gap: 8px 14px; padding-block: 8px; }
    .top-app-bar .nav { grid-row: 2; grid-column: 1 / -1; height: 44px; order: 3; }
    .top-app-bar .logo small { display: none; }
    .submit-record { display: none; }
}
@media (max-width: 520px) {
    .top-app-bar { padding-inline: 12px; }
    .top-app-bar .logo strong { max-width: 140px; }
    .md-button.admin-button { min-width: 0; padding-inline: 14px; }
}