/* Шапка */

.app-header {
    background: rgba(255, 255, 255, 0.95);
    padding: 1rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    height: 48px;
    border-bottom: 1px solid;
    border-image: linear-gradient(to right, transparent, rgba(219, 219, 219, 0.2), transparent) 1;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    height: 100%;
}

.app-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}