/* WSET shared lesson media + lightbox */

.lesson-media {
    --lesson-media-radius: 16px;
    margin: 2rem 0;
    max-width: 760px;
}

.lesson-media--compact { max-width: 520px; }
.lesson-media--wide { max-width: 980px; }

.lesson-media__button {
    position: relative;
    display: block;
    width: 100%;
    padding: 0;
    border: 1px solid rgba(132,165,198,.18);
    border-radius: var(--lesson-media-radius);
    overflow: hidden;
    background: linear-gradient(180deg,rgba(22,35,50,.92),rgba(10,18,28,.96));
    color: inherit;
    cursor: zoom-in;
    text-align: left;
    box-shadow: 0 12px 32px rgba(0,0,0,.18);
    transition: transform 160ms ease,border-color 160ms ease,box-shadow 160ms ease;
}

.lesson-media__button:hover {
    transform: translateY(-2px);
    border-color: rgba(91,183,255,.50);
    box-shadow: 0 18px 46px rgba(0,0,0,.28);
}

.lesson-media__button:focus-visible,
.lesson-lightbox__close:focus-visible {
    outline: 3px solid rgba(91,183,255,.75);
    outline-offset: 3px;
}

.lesson-media__image {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
    background: #08111b;
}

.lesson-media__overlay {
    position: absolute;
    right: 12px;
    bottom: 12px;
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    min-height: 38px;
    padding: .55rem .75rem;
    border: 1px solid rgba(255,255,255,.14);
    border-radius: 999px;
    background: rgba(4,10,17,.76);
    backdrop-filter: blur(8px);
    color: #f6fbff;
    font-size: .82rem;
    font-weight: 700;
    pointer-events: none;
}

.lesson-media__overlay-icon {
    width: 17px;
    height: 17px;
    flex: 0 0 auto;
}

.lesson-media__caption {
    margin-top: .7rem;
    color: var(--muted,#8ea6bd);
    font-size: .92rem;
    line-height: 1.55;
}

.lesson-media__caption strong {
    color: var(--text,#e7eef6);
}

.lesson-lightbox {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: none;
    padding: clamp(12px,2.2vw,28px);
}

.lesson-lightbox.is-open {
    display: grid;
    place-items: center;
}

.lesson-lightbox__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(3,8,14,.88);
    backdrop-filter: blur(10px);
}

.lesson-lightbox__dialog {
    position: relative;
    z-index: 1;
    width: min(96vw,1320px);
    max-height: 94vh;
    overflow: hidden;
    border: 1px solid rgba(132,165,198,.18);
    border-radius: 20px;
    background: #0b1420;
    box-shadow: 0 34px 120px rgba(0,0,0,.58);
}

.lesson-lightbox__toolbar {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1rem .9rem 1.25rem;
    border-bottom: 1px solid rgba(132,165,198,.11);
}

.lesson-lightbox__type {
    display: inline-block;
    margin-bottom: .35rem;
    color: #63d5ff;
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .10em;
    text-transform: uppercase;
}

.lesson-lightbox__title {
    margin: 0;
    color: #f5f8fb;
    font-size: clamp(1rem,2vw,1.35rem);
    line-height: 1.25;
}

.lesson-lightbox__close {
    display: inline-grid;
    place-items: center;
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    padding: 0;
    border: 1px solid rgba(255,255,255,.10);
    border-radius: 50%;
    background: rgba(255,255,255,.055);
    color: #f5f8fb;
    font-size: 1.8rem;
    cursor: pointer;
}

.lesson-lightbox__stage {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 240px;
    max-height: 72vh;
    padding: clamp(8px,1.4vw,18px);
    overflow: auto;
    background: radial-gradient(circle at 50% 0%,rgba(71,115,160,.10),transparent 55%),#070d14;
}

.lesson-lightbox__image {
    display: block;
    max-width: 100%;
    max-height: calc(72vh - 36px);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
}

.lesson-lightbox__loading {
    position: absolute;
    inset: 0;
    display: none;
    place-items: center;
    background: rgba(7,13,20,.62);
}

.lesson-lightbox.is-loading .lesson-lightbox__loading {
    display: grid;
}

.lesson-lightbox__spinner {
    width: 42px;
    height: 42px;
    border: 3px solid rgba(255,255,255,.16);
    border-top-color: #63d5ff;
    border-radius: 50%;
    animation: lesson-lightbox-spin 700ms linear infinite;
}

.lesson-lightbox__caption-wrap {
    padding: .95rem 1.25rem 1.15rem;
    border-top: 1px solid rgba(132,165,198,.10);
}

.lesson-lightbox__caption {
    margin: 0;
    color: #9db0c4;
    font-size: .95rem;
    line-height: 1.55;
}

body.lesson-lightbox-open { overflow: hidden; }

@media (max-width:700px) {
    .lesson-media { margin: 1.5rem 0; }

    .lesson-lightbox { padding: 0; }

    .lesson-lightbox__dialog {
        width: 100vw;
        height: 100dvh;
        max-height: none;
        border: 0;
        border-radius: 0;
    }

    .lesson-lightbox__stage {
        max-height: calc(100dvh - 154px);
        min-height: 0;
        height: calc(100dvh - 154px);
    }

    .lesson-lightbox__image { max-height: 100%; }
}

@media (prefers-reduced-motion:reduce) {
    .lesson-media__button,
    .lesson-lightbox__close {
        transition: none !important;
    }
}

@keyframes lesson-lightbox-spin {
    to { transform: rotate(360deg); }
}