body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

#content {
    flex: 1;
    padding-bottom: 72px;
}

.header-button {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    border-radius: 50%;
    transition: background .2s;
}

.header-button:hover {
    background: rgba(0,0,0,.08);
}

.header-button svg {
    width: 24px;
    height: 24px;
    display: block;
}

.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 64px;
    background: white;
    display: grid;
    grid-template-columns: 48px 1fr 48px;
    align-items: center;
    padding: 0 16px;
    box-sizing: border-box;
    border-bottom: 1px solid #ddd;
    z-index: 1000;
}

.app-name {
    text-align: center;
    font-size: 20px;
    font-weight: bold;
}

.header-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.header-placeholder {
    width: 40px;
    height: 40px;
}

.no-photos {
    width: 100%;
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 0;
    color: #777;
    font-size: 16px;
}