/* ═══════════════════════════════════════════════════════
   home-courses.css — bribool Capital v2
   Cursos (diseño original claro + parallax fondovideoblanco.png)
═══════════════════════════════════════════════════════ */

.ad-courses-section {
    --ad-courses-purple: #2d0e60;
    --ad-courses-purple-2: #4b168c;
    --ad-courses-hover-purple: var(--ad-purple-hover, #6a2cf3);
    --ad-courses-hover-purple-2: var(--ad-purple-hover-2, #8d3dff);
    position: relative;
    overflow: hidden;
    padding: 88px 0 104px;
    background-color: #ffffff;
    background-image:
        linear-gradient(rgba(255,255,255,.88), rgba(255,255,255,.88)),
        url('../images/fondovideoblanco.png');
    background-size: cover;
    background-position: center center;
    background-attachment: fixed;
}
.ad-courses-section > .ad-container { position: relative; z-index: 1; }
.ad-courses-header { max-width: 820px; margin: 0 auto 38px; text-align: center; }
.ad-courses-eyebrow {
    display: inline-flex; align-items: center; margin-bottom: 14px;
    color: #ff5f25; font-size: var(--ad-section-eyebrow-size);
    font-weight: var(--ad-section-eyebrow-weight); letter-spacing: .2px; text-transform: uppercase;
}
.ad-courses-header h2 {
    margin: 0; color: #111835;
    font-size: var(--ad-section-title-size); font-weight: var(--ad-section-title-weight);
    letter-spacing: 0; line-height: var(--ad-section-title-line);
}
.ad-courses-header h2 span { font-weight: 500; }
.ad-courses-header p {
    max-width: 720px; margin: 18px auto 0;
    color: var(--ad-text-soft); font-size: var(--ad-section-copy-size);
    font-weight: 500; line-height: var(--ad-section-copy-line);
}
.ad-courses-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.ad-course-card {
    position: relative; min-width: 0; min-height: 100%;
    display: flex; flex-direction: column; overflow: hidden;
    border: 1px solid var(--ad-border); border-radius: 18px;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 16px 36px rgba(45, 14, 96, .09); color: var(--ad-text);
    transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease;
}
.ad-course-card:hover {
    transform: translateY(-6px); border-color: rgba(45, 14, 96, .34);
    box-shadow: 0 22px 46px rgba(45, 14, 96, .12);
}
.ad-course-card__media {
    position: relative; aspect-ratio: 16 / 9; overflow: hidden;
    background: linear-gradient(135deg, rgba(45, 14, 96, .14), rgba(63, 105, 255, .08) 48%, rgba(255, 147, 33, .12));
}
.ad-course-card__media img { width: 100%; height: 100%; object-fit: cover; opacity: .92; transition: transform .35s ease, opacity .35s ease; }
.ad-course-card:hover .ad-course-card__media img { transform: scale(1.05); opacity: 1; }
.ad-course-card__media::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(17, 24, 53, .02) 0%, rgba(17, 24, 53, .22) 100%);
}
.ad-course-card__placeholder { height: 100%; display: grid; place-items: center; }
.ad-course-card__placeholder i {
    width: 82px; height: 82px; display: grid; place-items: center;
    border-radius: 24px; background: #ffffff; color: var(--ad-courses-purple);
    box-shadow: 0 18px 38px rgba(45, 14, 96, .13); font-size: 34px;
}
.ad-course-card__play {
    position: absolute; top: 50%; left: 50%; z-index: 2;
    width: 58px; height: 58px; display: grid; place-items: center;
    transform: translate(-50%, -50%); border-radius: 50%;
    background: rgba(255, 255, 255, .95); color: var(--ad-courses-purple);
    box-shadow: 0 14px 28px rgba(18, 25, 56, .16); transition: transform .24s ease, color .24s ease;
}
.ad-course-card__play i { margin-left: 4px; }
.ad-course-card:hover .ad-course-card__play { transform: translate(-50%, -50%) scale(1.06); color: var(--ad-blue); }
.ad-course-card__price {
    position: relative; z-index: 3; align-self: center;
    min-width: 112px; min-height: 34px; display: inline-flex;
    align-items: center; justify-content: center;
    margin: -17px 18px 8px; padding: 0 16px; border-radius: 999px;
    background: linear-gradient(135deg, var(--ad-courses-purple), var(--ad-courses-purple-2));
    color: #ffffff; box-shadow: 0 12px 24px rgba(45, 14, 96, .16);
    font-size: 13px; font-weight: 700;
}
.ad-course-card__price--free { background: linear-gradient(135deg, var(--ad-courses-purple), var(--ad-courses-purple-2)); }
.ad-course-card:hover .ad-course-card__price,
.ad-course-card:focus-visible .ad-course-card__price {
    background: linear-gradient(135deg, var(--ad-purple-hover, #6a2cf3), var(--ad-purple-hover-2, #8d3dff));
}
.ad-course-card__body { flex: 1; display: flex; flex-direction: column; padding: 10px 20px 20px; }
.ad-course-card__category {
    display: inline-flex; align-items: center; gap: 8px; margin-bottom: 12px;
    color: var(--ad-courses-purple); font-size: 12px; font-weight: 700; letter-spacing: .4px; text-transform: uppercase;
}
.ad-course-card__category span { width: 8px; height: 8px; border-radius: 50%; background: var(--ad-orange); }
.ad-course-card h3 {
    display: -webkit-box; margin: 0; overflow: hidden; color: #111835;
    font-size: 16px; font-weight: var(--ad-card-title-weight);
    letter-spacing: 0; line-height: 1.32; -webkit-box-orient: vertical; -webkit-line-clamp: 2;
}
.ad-course-card p {
    display: -webkit-box; margin: 12px 0 16px; overflow: hidden;
    color: var(--ad-text-soft); font-size: 14px; font-weight: 500;
    line-height: 1.56; -webkit-box-orient: vertical; -webkit-line-clamp: 2;
}
.ad-course-card__meta { display: grid; gap: 9px; margin-top: auto; color: #47526c; font-size: 13px; font-weight: 600; }
.ad-course-card__meta span { display: inline-flex; align-items: center; gap: 8px; }
.ad-course-card__meta i { color: var(--ad-courses-purple); }
.ad-course-card__footer {
    display: flex; align-items: center; justify-content: space-between; gap: 14px;
    margin-top: 18px; padding-top: 16px; border-top: 1px solid rgba(18, 25, 56, .08);
}
.ad-course-card__rating { display: inline-flex; align-items: center; gap: 3px; color: var(--ad-orange); font-size: 12px; }
.ad-course-card__link {
    min-height: 34px; display: inline-flex; align-items: center; justify-content: center;
    padding: 0 13px; border: 1px solid transparent; border-radius: 10px;
    background: var(--ad-courses-purple);
    color: #ffffff !important;
    font-size: 12px; font-weight: 700;
    letter-spacing: .3px; text-transform: uppercase;
    transition: background .24s ease, color .24s ease, border-color .24s ease;
}
.ad-course-card:hover .ad-course-card__link,
.ad-course-card__link:hover,
.ad-course-card__link:focus-visible {
    border-color: transparent;
    background: linear-gradient(135deg, var(--ad-courses-hover-purple, #6a2cf3), var(--ad-courses-hover-purple-2, #8d3dff));
    color: #ffffff !important;
}
.ad-courses-action { margin-top: 42px; text-align: center; }
.ad-courses-cta {
    display: inline-flex; align-items: center; justify-content: center;
    min-height: 56px; padding: 0 34px; border-radius: 18px;
    background: linear-gradient(135deg, var(--ad-courses-purple), var(--ad-courses-purple-2));
    color: #ffffff !important; font-size: 14px; font-weight: 800;
    letter-spacing: .5px; text-transform: uppercase; text-decoration: none;
    border: none; box-shadow: none;
    transition: transform .2s;
}
.ad-courses-cta:hover {
    background: linear-gradient(135deg, var(--ad-purple-hover, #6a2cf3), var(--ad-purple-hover-2, #8d3dff));
    transform: translateY(-2px);
    box-shadow: none;
}

@media (max-width: 1150px) { .ad-courses-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 768px) {
    .ad-courses-section { padding: 68px 0 78px; }
    .ad-courses-header { margin-bottom: 28px; }
    .ad-courses-grid { grid-template-columns: 1fr; gap: 16px; }
    .ad-course-card { border-radius: 16px; }
    .ad-course-card__body { padding: 10px 16px 16px; }
    .ad-course-card__footer { align-items: flex-start; flex-direction: column; }
    .ad-course-card__link, .ad-courses-cta { width: 100%; }
}