:root {
    --color1: #05b1b1;
    --color2: #52339a;
}

section {
    padding: 100px 0;
}

header {
    padding: 200px 0;
}

header,
footer {
    background: url(../img/pattern.png), linear-gradient(to right, var(--color1) 0%, var(--color2) 100%);
    background-size: contain;
}

.itd_play {
    background-color: var(--color1);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    margin: 30px auto;
    transition: all 0.2s ease;
}

.itd_play:hover {
    background-color: var(--color2);
}

.itd_triangle {
    margin-right: -3px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 20px;
    border-color: transparent transparent transparent var(--bs-white);
}

.btn-itd {
    display: block;
    max-width: 200px;
    margin: 0 auto;
    padding: 8px 30px;
    color: var(--bs-white);
    background-color: var(--color2);
}

.btn-itd:hover {
    background-color: var(--color1);
    color: var(--bs-white);
}

/* О курсе */
.about,
.schedule,
.reviews {
    background-color: #eee;
}

.itd-circle {
    margin: 0 auto 15px;
    width: 70px;
    height: 70px;
    border: 3px solid var(--color2);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.about i {
    font-size: 25px;
    color: var(--color2);
}

.line {
    width: 100px;
    height: 3px;
    background-color: var(--color1);
    margin: 15px auto 30px;
}

.forwhom h5 {
    padding: 50px;
    border: 3px solid var(--color1);
}

/* Программа курса */

.accordion-button:not(.collapsed) {
    color: var(--bs-white);
    background-color: var(--color2);
}

.accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='white'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

/* Об Авторе */
.author {
    padding-bottom: 0;
}

.itd_img {
    max-width: 260px;
}

/* Отзывы */
.rounded {
    border-radius: 50% !important;
    border: 3px solid var(--color1);
}

/* Подвал */
footer {
    padding: 30px 0;
}

footer .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

/* Цвет */
.color1 {
    color: var(--color1);
}

.color2 {
    color: var(--color2);
}

.bgc1 {
    background-color: var(--color1);
}

.bgc2 {
    background-color: var(--color2);
}

/*  */