body {
    background-color: #00007f;
    font-family: "Main";
    margin: 0;
    padding: 0;
}
.container {
    padding: 21px;
}
header {
    background-color: #bfbfbf;
    padding-block: 14px;
    width: 100%;
}
.block {
    margin-top: 42px;
}
h1.title {
    text-align: center;
    font-size: 36px;
    color: #090055;
    margin: 0;
}
p.text {
    margin-top: 7px;
    font-size: 20px;
    color: white;
}
ul.menu {
    margin-top: 21px;
    display: inline-flex;
    flex-direction: column;
    font-size: 20px;
    padding: 0;
}
.menu-item {
    padding: 4px;
    margin-top: 7px;
    color: white;
    cursor: pointer;
    list-style-type: none;
}
.menu-item.active {
    background-color: #bfbfbf;
    color: #993a3a;
}

/* Дополнительные стили для функциональности */
.warning {
    color: #ffcc00;
}

.error {
    color: #ff3333;
    font-weight: bold;
}

.loading {
    height: 24px;
    background-color: #2a2a7f;
    margin: 15px 0;
    overflow: hidden;
    position: relative;
}

.loading::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 33%;
    background-color: #bfbfbf;
    border-radius: 4px;
    animation: loading 2s infinite;
}

@keyframes loading {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(400%);
    }
}

.progress-bar {
    height: 24px;
    background-color: #2a2a7f;
    margin: 15px 0;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: #bfbfbf;
    width: 33%;
    transition: width 0.5s ease-in-out;
}