---

/* Основные настройки */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    color: white;
}

/* Видео-фон */
.video-background {
    position: fixed;
    right: 0;
    bottom: 0;
    min-width: 100%;
    min-height: 100%;
    z-index: -1;
}

/* Навигация */
nav ul {
    list-style-type: none;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    padding: 1rem;
}

nav li {
    margin-right: 1rem;
}

nav a {
    text-decoration: none;
    color: white;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #ffcc00;
}

/* Основная секция */
.main-content {
    text-align: center;
    padding-top: 10vh;
}

.main-content h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.main-content button {
    padding: 1rem 2rem;
    background-color: #ffcc00;
    color: black;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background-color 0.3s ease;
}

.main-content button:hover {
    background-color: #ffb300;
}

/* Модальное окно */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: white;
    padding: 2rem;
    max-width: 400px;
    border-radius: 5px;
}

.close {
    float: right;
    font-size: 2rem;
    cursor: pointer;
}

/* Расписание занятий */
.schedule-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    padding: 2rem;
}

.schedule-item {
    background-color: rgba(255, 204, 0, 0.7);
    padding: 1rem;
    border-radius: 5px;
    text-align: center;
}