/* ============================================================
   CSB PODCAST — PUBLICITÉS PREMIUM 2026
============================================================ */

.csb-public-ad {
    --csb-purple: #8B43A8;
    --csb-pink: #EA5B78;
    --csb-cyan: #12B4D6;
    --csb-white: #F7F7FB;
    --csb-dark: #07070A;

    position: relative;
    width: 100%;
    min-width: 0;
    margin: 28px 0;

    overflow: hidden;
    isolation: isolate;

    border: 1px solid rgba(139, 67, 168, .25);
    border-radius: 24px;

    background: var(--csb-dark);
    color: var(--csb-white);

    box-shadow: 0 25px 70px rgba(0, 0, 0, .22);

    transition:
        transform .35s ease,
        box-shadow .35s ease,
        border-color .35s ease;
}

.csb-public-ad:hover {
    transform: translateY(-3px);
    border-color: rgba(18, 180, 214, .36);
    box-shadow: 0 30px 80px rgba(139, 67, 168, .12);
}

.csb-public-ad__label {
    position: absolute;
    z-index: 3;
    top: 16px;
    left: 16px;

    display: inline-flex;
    align-items: center;

    padding: 9px 13px;

    background: rgba(7, 7, 10, .83);
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 999px;

    backdrop-filter: blur(14px);

    color: #fff;
    font-size: 10px;
    font-weight: 900;
    letter-spacing: .12em;
}

.csb-public-ad__link {
    display: block;
    width: 100%;
    color: inherit;
    text-decoration: none;
}

.csb-public-ad__link:focus-visible {
    outline: 3px solid var(--csb-cyan);
    outline-offset: -4px;
}

.csb-public-ad__visual {
    position: relative;
    aspect-ratio: 20 / 7;
    overflow: hidden;

    background:
        linear-gradient(
            120deg,
            var(--csb-purple),
            #101019,
            var(--csb-cyan)
        );
}

.csb-public-ad__visual img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;

    transition: transform .6s cubic-bezier(.2, .8, .2, 1);
}

.csb-public-ad:hover .csb-public-ad__visual img {
    transform: scale(1.035);
}

.csb-public-ad__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;

    padding: 21px 25px;

    background:
        linear-gradient(
            135deg,
            rgba(139, 67, 168, .08),
            rgba(7, 7, 10, 1) 50%,
            rgba(18, 180, 214, .05)
        );
}

.csb-public-ad__sponsor {
    flex-basis: 100%;

    color: var(--csb-cyan);
    font-size: 11px;
    font-weight: 850;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.csb-public-ad__content h3 {
    flex: 1;
    min-width: 180px;
    margin: 0;

    font-size: clamp(18px, 2.2vw, 27px);
    font-weight: 850;
    line-height: 1.25;
    letter-spacing: -.025em;

    color: var(--csb-white);
}

.csb-public-ad__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-shrink: 0;

    min-height: 45px;
    padding: 13px 18px;

    border-radius: 13px;

    background: linear-gradient(
        115deg,
        var(--csb-purple),
        var(--csb-pink),
        var(--csb-cyan)
    );

    color: #fff;
    font-size: 12px;
    font-weight: 900;

    transition: filter .2s ease;
}

.csb-public-ad:hover .csb-public-ad__cta {
    filter: brightness(1.1);
}

/* Carte sponsorisée */

.csb-public-ad--card {
    max-width: 680px;
}

.csb-public-ad--card .csb-public-ad__visual {
    aspect-ratio: 16 / 10;
}

.csb-public-ad--card .csb-public-ad__content {
    align-items: stretch;
    flex-direction: column;
}

.csb-public-ad--card .csb-public-ad__cta {
    align-self: flex-start;
}

/* Mobile */

@media (max-width: 768px) {
    .csb-public-ad {
        margin: 22px 0;
        border-radius: 17px;
    }

    .csb-public-ad__visual {
        aspect-ratio: 16 / 9;
    }

    .csb-public-ad__content {
        padding: 17px;
        align-items: stretch;
        flex-direction: column;
    }

    .csb-public-ad__cta {
        width: 100%;
    }

    .csb-public-ad__label {
        top: 12px;
        left: 12px;
    }
}

/* Accessibilité */

@media (prefers-reduced-motion: reduce) {
    .csb-public-ad,
    .csb-public-ad__visual img,
    .csb-public-ad__cta {
        transition: none;
    }

    .csb-public-ad:hover,
    .csb-public-ad:hover .csb-public-ad__visual img {
        transform: none;
    }
}