/* App Shell Header — my-symphony */
.sym-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    background: color-mix(in srgb, var(--surface) 88%, transparent);
    border-bottom: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.3rem;
    height: 3.2rem;
    gap: 1rem;
}
.sym-header-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--ink);
    flex-shrink: 0;
}
.sym-header-mark {
    width: 1.7rem;
    height: 1.7rem;
    border-radius: 0.45rem;
    flex-shrink: 0;
}
.sym-header-mark-default {
    background: linear-gradient(135deg, var(--brand), var(--accent));
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.sym-header-mark img {
    width: 100%;
    height: 100%;
    border-radius: 0.45rem;
    object-fit: cover;
}
.sym-header-label {
    font-family: 'Sora', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    white-space: nowrap;
}
.sym-header-nav {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    flex: 1;
    justify-content: center;
}
.sym-header-nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.84rem;
    font-weight: 500;
    padding: 0.4rem 0.7rem;
    border-radius: 0.4rem;
    transition: color 0.15s, background 0.15s;
    white-space: nowrap;
}
.sym-header-nav a:hover,
.sym-header-nav a.active {
    color: var(--ink);
    background: rgba(255,255,255,0.06);
}
.sym-header-right {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    flex-shrink: 0;
    min-height: 2rem;
}
.sym-header-right .auth-email {
    font-size: 0.82rem;
    color: var(--muted);
    max-width: 160px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
@media (max-width: 700px) {
    .sym-header { padding: 0 0.8rem; }
    .sym-header-nav { gap: 0; }
    .sym-header-nav a { font-size: 0.78rem; padding: 0.35rem 0.5rem; }
    .sym-header-label { font-size: 0.9rem; }
}