/* ------------- Hero ------------- */

.hero { padding-top: clamp(2rem, 4vw + 1rem, 5rem); padding-bottom: clamp(2rem, 3vw + 1rem, 4rem); }
.hero__grid {
    display: grid; grid-template-columns: 1.15fr 1fr; gap: 2.5rem; align-items: center;
}
.hero__title { line-height: 1.05; margin-top: 0.4rem; }
.hero__lead { color: var(--text-soft); font-size: var(--step-3); max-width: 60ch; }
.hero__cta { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.25rem; }
.hero__note { color: var(--text-dim); font-size: 0.9rem; margin-top: 1.5rem; }

.hero__video { padding: 0.9rem; }
.hero__video-head { display: flex; align-items: center; gap: 0.4rem; padding: 0.2rem 0.25rem 0.75rem; color: var(--text-dim); font-size: 0.82rem; }
.hero__video-title { margin-left: auto; }
.hero__video-foot { color: var(--text-dim); font-size: 0.8rem; padding: 0.75rem 0.25rem 0; }

@media (max-width: 900px) {
    .hero__grid { grid-template-columns: 1fr; }
}

/* ------------- Band ------------- */

.band {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.09), rgba(167, 139, 250, 0.09) 60%, rgba(251, 191, 36, 0.08));
    border-block: 1px solid var(--border);
}
.band__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 2rem; align-items: center; padding-block: 1rem; }
.band__title { margin-top: 0.4rem; }
.band__lead { color: var(--text-soft); font-size: var(--step-3); max-width: 55ch; }
.band__points { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.75rem; }
.band__points li { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 0.9rem 1rem; color: var(--text-soft); }
.band__points strong { color: var(--text); }

@media (max-width: 900px) {
    .band__grid { grid-template-columns: 1fr; }
}

/* ------------- Page head ------------- */

.page-head { padding: clamp(2rem, 4vw + 1rem, 4rem) 0 1rem; }
.page-head__title { margin-top: 0.4rem; }
.page-head__lead { color: var(--text-soft); font-size: var(--step-3); max-width: 65ch; }
.page-head__filter { color: var(--text-dim); font-size: 0.9rem; display: inline-flex; align-items: center; gap: 0.5rem; margin-top: 0.75rem; }
.page-head--center { text-align: center; padding-block: 6rem; }
.page-head--center .hero__cta { justify-content: center; }

/* ------------- Article (blog detail) ------------- */

.article__head { padding: 2rem 0 1rem; max-width: 820px; margin: 0 auto; }
.article__meta { display: flex; flex-wrap: wrap; gap: 0.5rem; color: var(--text-dim); font-size: 0.85rem; margin-bottom: 0.4rem; }
.article__title { margin: 0.2rem 0 0.6rem; font-size: var(--step-5); }
.article__excerpt { color: var(--text-soft); font-size: var(--step-3); }
.article__author { display: inline-flex; align-items: center; gap: 0.75rem; margin-top: 1rem; }
.article__author small { display: block; color: var(--text-dim); }
.article__hero { margin: 1rem auto 0; max-width: 1180px; padding: 0 1rem; }
.article__hero img { width: 100%; aspect-ratio: 21 / 9; object-fit: cover; border-radius: var(--radius-lg); box-shadow: var(--shadow-2); }
.article__hero figcaption { color: var(--text-dim); font-size: 0.85rem; text-align: center; margin-top: 0.5rem; }
.article__body { max-width: 720px; margin: 2rem auto; font-size: var(--step-3); }
.article__body p { color: var(--text-soft); margin-bottom: 1.2rem; }
.article__gallery { max-width: 1100px; margin: 1.5rem auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.article__gallery figure { margin: 0; }
.article__gallery img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.article__gallery figcaption { color: var(--text-dim); font-size: 0.82rem; margin-top: 0.4rem; }
.article__foot { max-width: 720px; margin: 2rem auto 4rem; }

/* ------------- About ------------- */

.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; }
.about-grid h2 { font-size: 1.35rem; }
.about-grid ul { padding-left: 1.1rem; color: var(--text-soft); margin: 0; }
.card--sponsor-card { border-color: var(--border-strong); background: linear-gradient(135deg, rgba(34, 211, 238, 0.09), rgba(251, 191, 36, 0.06)); }

/* ------------- Curso (Udemy-like) ------------- */

.course-hero { padding: 2.5rem 0 2rem; background: linear-gradient(180deg, rgba(34, 211, 238, 0.06), transparent); border-bottom: 1px solid var(--border); }
.course-hero__grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 2rem; align-items: flex-start; }
.course-hero__meta { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.5rem 0 1rem; }
.course-hero__title { font-size: var(--step-5); }
.course-hero__subtitle { color: var(--text-soft); font-size: var(--step-3); margin-bottom: 1rem; }
.course-hero__desc { color: var(--text-dim); }
.course-hero__author { display: inline-flex; align-items: center; gap: 0.75rem; margin-top: 1rem; color: var(--text-soft); }
.course-hero__author small { display: block; color: var(--text-dim); }

.course-hero__stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.75rem; padding: 1.25rem; }
.stat { padding: 0.85rem 1rem; border-radius: var(--radius-sm); background: var(--surface); border: 1px solid var(--border); text-align: center; }
.stat__num { display: block; font-size: 1.4rem; font-weight: 800; color: var(--text); }
.stat__label { color: var(--text-dim); font-size: 0.82rem; }
.stat--free { background: linear-gradient(135deg, rgba(52, 211, 153, 0.18), rgba(34, 211, 238, 0.15)); border-color: transparent; }
.stat--free .stat__num { color: #86efac; }

@media (max-width: 900px) {
    .course-hero__grid { grid-template-columns: 1fr; }
}

.course-player { padding: 2rem 0 3rem; }
.course-player__grid { display: grid; grid-template-columns: 1.55fr 1fr; gap: 1.5rem; align-items: flex-start; }
.course-player__main { min-width: 0; }
.course-player__lesson { padding: 1rem 0.25rem; }
.course-player__title { margin: 0.3rem 0 0.5rem; font-size: var(--step-4); }
.course-player__summary { color: var(--text-soft); }

.course-player__sidebar {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 0.5rem; max-height: 720px; overflow: auto; position: sticky; top: 84px;
}
.course-player__sidebar-head { padding: 0.75rem 0.85rem; border-bottom: 1px solid var(--border); }
.course-player__sidebar-head h3 { margin: 0; font-size: 1rem; }
.course-player__sidebar-head small { color: var(--text-dim); }

.course-modules { list-style: none; padding: 0; margin: 0; }
.course-modules__item { border-bottom: 1px solid var(--border); }
.course-modules__item:last-child { border-bottom: none; }
.course-modules details summary {
    display: grid; grid-template-columns: 32px 1fr auto; gap: 0.5rem; align-items: center;
    padding: 0.75rem 0.85rem; cursor: pointer; list-style: none; user-select: none;
}
.course-modules details summary::-webkit-details-marker { display: none; }
.course-modules details[open] summary { color: var(--text); }
.course-modules__idx { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 8px; background: var(--surface-strong); color: var(--text); font-weight: 700; font-size: 0.85rem; }
.course-modules__title { color: var(--text); font-weight: 600; }
.course-modules__count { color: var(--text-dim); font-size: 0.8rem; }

.course-lessons { list-style: none; padding: 0 0.5rem 0.75rem; margin: 0; display: grid; gap: 4px; }
.course-lesson {
    display: grid; grid-template-columns: 28px 1fr auto; align-items: center; gap: 0.6rem;
    width: 100%; text-align: left; padding: 0.55rem 0.7rem; border-radius: 10px;
    background: transparent; border: 1px solid transparent; color: var(--text-soft); cursor: pointer;
    font-size: 0.92rem;
}
.course-lesson:hover { background: var(--surface); color: var(--text); }
.course-lesson.is-active { background: rgba(34, 211, 238, 0.14); border-color: rgba(34, 211, 238, 0.25); color: #a5f3fc; }
.course-lesson__play { color: var(--brand-1); font-size: 0.8rem; }
.course-lesson__dur { color: var(--text-dim); font-size: 0.78rem; }

@media (max-width: 1000px) {
    .course-player__grid { grid-template-columns: 1fr; }
    .course-player__sidebar { position: static; max-height: none; }
}