/* 코스 상세 — 좌 본문 / 우 sticky 카드 */

.course-view {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 48px;
    align-items: start;
}

.course-view__cover {
    aspect-ratio: 16 / 9;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 28px;
}

.course-view__cover img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.course-view__video {
    aspect-ratio: 16 / 9;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 28px;
    background: #000;
}

.course-view__video iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
}


.course-view__head {
    padding-bottom: 24px;
    border-bottom: 1px solid var(--c-line);
}

.course-view__title {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.45;
    letter-spacing: -0.02em;
    margin: 0;
}

.course-view__summary {
    margin: 14px 0 0;
    font-size: 16px;
    line-height: 1.75;
    color: var(--c-text-sub);
}

.course-view__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
    font-size: 13px;
    color: var(--c-text-sub);
}

/* 목차 탭 */
.course-tabs {
    position: sticky;
    top: 0;
    z-index: 5;
    display: flex;
    gap: 26px;
    overflow-x: auto;
    padding: 0 2px;
    margin-bottom: 36px;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.course-tabs::-webkit-scrollbar { display: none; }

.course-tabs__item {
    flex: none;
    padding: 16px 0;
    margin-bottom: -1px;
    font-size: 15px;
    color: var(--c-text-sub);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: color .15s, border-color .15s;
}

.course-tabs__item:hover { color: var(--c-text); }

.course-tabs__item.is-on {
    color: var(--c-primary) !important;
    border-bottom-color: var(--c-primary) !important;
    font-weight: 600;
}
.course-view__body {
    padding-top: 32px;
    font-size: 16px;
    line-height: 1.85;
}

.course-view__body h2 {
    scroll-margin-top: 100px;
    margin: 56px 0 18px;
    font-size: 20px;
    font-weight: 700;
}

.course-view__body h2:first-child { margin-top: 0; }

.course-view__body img {
    max-width: 100%;
    height: auto;
}

/* 사이드 카드 */
.course-view__side {
    position: sticky;
    top: 90px;
}

.course-card {
    padding: 26px 24px;
    border: 1px solid var(--c-line);
    border-radius: 12px;
    background: #fff;
}

.course-card__price {
    margin: 0 0 20px;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.course-card__price span {
    font-size: 18px;
    font-weight: 600;
    margin-left: 2px;
}

.course-card__specs {
    margin: 0;
    padding: 0;
}
.course-card__row {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    font-size: 14px;
    line-height: 1.7;
}

.course-card__row + .course-card__row { margin-top: 10px; }

.course-card__row dt {
    flex: none;
    color: var(--c-text-sub);
}

.course-card__row dd {
    margin: 0;
    text-align: right;
    font-weight: 500;
}

.course-card__row dd a { color: var(--c-primary); }

.course-card__btn {
    display: block;
    padding: 15px;
    border-radius: 8px;
    background: var(--c-primary);
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: background .15s;
}

.course-card__btn:hover { background: var(--c-primary-d); }

/* ===== 코스 목록 ===== */

.board-course {
    display: grid;
    gap: 32px 24px;
}

.board-course--a { grid-template-columns: repeat(3, 1fr); }
.board-course--b { grid-template-columns: 1fr; }

.board-course__item {
    display: block;
    color: inherit;
    text-decoration: none;
}

.board-course__thumb {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: 10px;
    background: var(--c-line);
}

.board-course__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s;
}

.board-course__item:hover .board-course__thumb img { transform: scale(1.04); }

.board-course__badge {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 4px 9px;
    border-radius: 4px;
    background: var(--c-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
}

.board-course__body { padding-top: 14px; }

.board-course__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}

.board-course__tag {
    padding: 3px 8px;
    border-radius: 4px;
    background: var(--c-bg-sub, #f5f5f4);
    font-size: 12px;
    color: var(--c-text-sub);
}

.board-course__title {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    letter-spacing: -0.01em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.board-course__desc {
    margin: 8px 0 0;
    font-size: 14px;
    line-height: 1.65;
    color: var(--c-text-sub);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.board-course__foot {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-top: 12px;
}

.board-course__price {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.board-course__price.is-free { color: var(--c-primary); }

.board-course__time {
    font-size: 13px;
    color: var(--c-text-sub);
}

/* B — 가로 리스트 */
.board-course--b .board-course__item {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 24px;
    align-items: center;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--c-line);
}

.board-course--b .board-course__body { padding-top: 0; }
.board-course--b .board-course__title { font-size: 19px; }

@media (max-width: 900px) {
    .board-course--a { grid-template-columns: repeat(2, 1fr); }
    .board-course--b .board-course__item { grid-template-columns: 180px minmax(0, 1fr); gap: 16px; }
}

@media (max-width: 560px) {
    .board-course { gap: 24px 14px; }
    .board-course--a { grid-template-columns: repeat(2, 1fr); }
    .board-course__title { font-size: 14px; }
    .board-course__desc { display: none; }
    .board-course--b .board-course__item { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) {
    .course-view {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .course-view__side {
        position: static;
        order: -1;
    }

    .course-view__title { font-size: 23px; }
}