/* ==========================================================================
   Home: "Discover The Ideal Course For You" — course slider
   ========================================================================== */
.modern-course-section {
    position: relative;
    overflow: hidden;
    padding: clamp(56px, 7vw, 104px) 0;
    background:
        radial-gradient(55% 60% at 88% 0%, rgba(51, 189, 255, 0.12) 0%, rgba(51, 189, 255, 0) 70%),
        radial-gradient(45% 50% at 0% 100%, rgba(51, 189, 255, 0.07) 0%, rgba(51, 189, 255, 0) 70%),
        #f6f9fc;
}

.modern-course-section .section__head {
    max-width: 820px;
    margin: 0 auto;
    padding-bottom: clamp(32px, 4vw, 52px);
}

.modern-course-section .section__head h2 {
    font-size: clamp(1.9rem, 1.2rem + 2vw, 2.75rem);
    color: #09212b;
    margin-bottom: 0;
    letter-spacing: -0.5px;
    line-height: 1.15;
}

/* Slider: a native scroll-snap row (touch swipe stays native); course-slider.js adds arrows, dots and drag. */
.course-slider {
    --course-gap: clamp(16px, 2vw, 28px);
    --course-per-view: 1.12;
    position: relative;
}

@media (min-width: 576px) {
    .course-slider {
        --course-per-view: 2;
    }
}

@media (min-width: 992px) {
    .course-slider {
        --course-per-view: 3;
    }
}

.course-grid {
    display: flex;
    gap: var(--course-gap);
    margin: -12px -4px 0;
    padding: 12px 4px 20px;
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-x: contain;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: 4px;
    scrollbar-width: none;
}

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

.course-grid:focus-visible {
    outline: 2px solid #33BDFF;
    outline-offset: 4px;
    border-radius: 18px;
}

.course-grid.is-dragging {
    scroll-snap-type: none;
    cursor: grabbing;
    user-select: none;
}

.course-grid.is-dragging a {
    pointer-events: none;
}

.course-grid > .course-slide {
    display: flex;
    flex: 0 0 calc((100% - (var(--course-per-view) - 1) * var(--course-gap)) / var(--course-per-view));
    min-width: 0;
    scroll-snap-align: start;
}

/* Arrows and dots under the row */
.course-slider__controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-top: clamp(12px, 2vw, 20px);
}

.course-slider__controls[hidden] {
    display: none;
}

.course-slider__dots {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}

.course-slider__dot {
    display: inline-grid;
    place-items: center;
    width: 20px;
    height: 24px;
    padding: 0;
    border: 0;
    background: none;
    cursor: pointer;
}

.course-slider__dot::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: rgba(9, 33, 43, 0.2);
    transition: width 0.42s cubic-bezier(0.2, 0.8, 0.2, 1), background-color 0.42s ease;
}

.course-slider__dot:hover::before {
    background: rgba(9, 33, 43, 0.4);
}

.course-slider__dot[aria-current="true"] {
    width: 34px;
}

.course-slider__dot[aria-current="true"]::before {
    width: 24px;
    background: #33BDFF;
}

.course-slider__dot:focus-visible {
    outline: 2px solid #33BDFF;
    outline-offset: 1px;
    border-radius: 6px;
}

.course-slider__nav {
    display: flex;
    gap: 10px;
    margin-left: auto;
}

.course-slider__btn {
    display: inline-grid;
    place-items: center;
    width: 46px;
    height: 46px;
    padding: 0;
    border: 1px solid rgba(9, 33, 43, 0.14);
    border-radius: 999px;
    background: #fff;
    color: #09212b;
    font-size: 1.6rem;
    box-shadow: 0 6px 18px rgba(9, 33, 43, 0.06);
    cursor: pointer;
    transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, opacity 0.25s ease;
}

.course-slider__btn:hover:not(:disabled),
.course-slider__btn:focus-visible {
    background: #33BDFF;
    border-color: #33BDFF;
    color: #fff;
}

.course-slider__btn:focus-visible {
    outline: 2px solid #09212b;
    outline-offset: 2px;
}

.course-slider__btn:disabled {
    opacity: 0.4;
    cursor: default;
}

/* Card */
.modern-course-card {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    background: #fff;
    border: 1px solid rgba(9, 33, 43, 0.06);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(9, 33, 43, 0.06);
    transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.modern-course-card:hover,
.modern-course-card:focus-within {
    transform: translateY(-4px);
    box-shadow: 0 22px 44px rgba(9, 33, 43, 0.12);
}

.course-img-wrapper {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #e8eef4;
}

.course-img-wrapper::after {
    content: "";
    position: absolute;
    inset: auto 0 0 0;
    height: 55%;
    background: linear-gradient(to bottom, rgba(9, 33, 43, 0) 0%, rgba(9, 33, 43, 0.5) 100%);
    pointer-events: none;
}

.course-img-wrapper img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.modern-course-card:hover .course-img-wrapper img {
    transform: scale(1.04);
}

.course-tag {
    position: absolute;
    left: 16px;
    bottom: 14px;
    z-index: 1;
    padding: 5px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.35);
    -webkit-backdrop-filter: blur(10px) saturate(140%);
    backdrop-filter: blur(10px) saturate(140%);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    line-height: 1.3;
    text-transform: uppercase;
}

.course-content {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 22px 24px 24px;
}

.course-title {
    font-family: "DM Serif Display", serif;
    font-size: 1.3rem;
    font-weight: 400;
    color: #09212b;
    margin: 0 0 10px;
    line-height: 1.25;
}

.course-desc {
    flex-grow: 1;
    margin-bottom: 22px;
    color: #5b6670;
    font-size: 0.95rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Ghost "Read More" that fills on hover; its ::after stretches the link over the whole card. */
.course-btn {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border: 1px solid rgba(9, 33, 43, 0.18);
    border-radius: 999px;
    background: transparent;
    color: #09212b;
    font-size: 0.92rem;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.course-btn::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 2;
}

.course-btn i {
    font-size: 1.15rem;
    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.modern-course-card:hover .course-btn,
.course-btn:focus-visible {
    background: #09212b;
    border-color: #09212b;
    color: #fff;
}

.modern-course-card:hover .course-btn i {
    transform: translateX(4px);
}

.course-btn:focus-visible {
    outline: none;
}

.modern-course-card:has(.course-btn:focus-visible) {
    outline: 3px solid #33BDFF;
    outline-offset: 3px;
}

@media (max-width: 575.98px) {
    .course-content {
        padding: 18px 20px 20px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .modern-course-card,
    .course-img-wrapper img,
    .course-btn,
    .course-btn i {
        transition: none;
    }

    .modern-course-card:hover,
    .modern-course-card:focus-within {
        transform: none;
    }

    .modern-course-card:hover .course-img-wrapper img {
        transform: none;
    }
}