/* Тут живет "каркас": шапка и нижнее меню, которые видны всегда.

/* Шапка */
.header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 30px 20px;
    border-bottom-left-radius: 25px;
    border-bottom-right-radius: 25px;
}

.logo { font-weight: 800; font-size: 1.2rem; letter-spacing: 1px; }
.logo span { color: #00d2ff; }
.user-info { margin-top: 10px; font-size: 0.9rem; opacity: 0.9; }

/* Нижняя навигация */
.bottom-nav {
    position: fixed;
    bottom: 0;
    width: 100%;
    max-width: 400px;
    height: 70px;
    background: white;
    display: flex;
    justify-content: space-around;
    align-items: center;
    border-top: 1px solid #eee;
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.7rem;
    color: #888;
    cursor: pointer;
    transition: 0.3s;
}

.nav-item.active {
    color: #1e3c72;
    font-weight: bold;
    border-top: 2px solid #1e3c72;
    padding-top: 8px;
}