.btf-single-workout {
    --btf-gold: rgb(219, 176, 107);
    --btf-black: #000;
    --btf-panel: #0c0c0c;
    --btf-grey: #dcdcdc;
    --btf-muted: #a7a7a7;
    --btf-line: rgba(220, 220, 220, .18);
    background: var(--btf-black);
    color: #fff;
    font-family: inherit;
}

.btf-single-workout *,
.btf-single-workout *::before,
.btf-single-workout *::after { box-sizing: border-box; }

.btf-single-inner { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.btf-single-hero {
    position: relative;
    isolation: isolate;
    min-height: 500px;
    overflow: hidden;
    background: radial-gradient(circle at 78% 35%, #292929 0, #0c0c0c 34%, #000 70%);
}

.btf-single-hero.has-image {
    background-image: var(--btf-single-image);
    background-position: center;
    background-size: cover;
}

.btf-single-hero-overlay {
    position: absolute;
    z-index: -1;
    inset: 0;
    background: linear-gradient(90deg, rgba(0, 0, 0, .98) 0%, rgba(0, 0, 0, .83) 47%, rgba(0, 0, 0, .32) 100%);
}

.btf-single-hero-content {
    display: flex;
    min-height: 500px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 76px 0;
}

.btf-single-back { margin-bottom: 52px; color: var(--btf-grey); font-size: 14px; text-decoration: none; }
.btf-single-back:hover { color: var(--btf-gold); }
.btf-single-eyebrow,
.btf-single-section-label { margin: 0 0 12px; color: var(--btf-gold); font-size: 12px; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }

.btf-single-hero h1 {
    width: min(760px, 100%);
    margin: 0 0 30px;
    color: #fff;
    font-size: clamp(44px, 7vw, 86px);
    font-weight: 800;
    letter-spacing: -.035em;
    line-height: .98;
}

.btf-single-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.btf-single-badges span { padding: 8px 11px; border-radius: 5px; font-size: 11px; font-weight: 800; line-height: 1; text-transform: uppercase; }
.btf-single-duration { background: rgba(255, 255, 255, .14); color: #fff; }
.btf-single-level { color: #fff; }
.btf-single-level.btf-level-easy { background: #65a832; }
.btf-single-level.btf-level-medium { background: #d78b2b; }
.btf-single-level.btf-level-advanced { background: #c93636; }

.btf-single-body { padding: clamp(54px, 7vw, 96px) 0; }
.btf-single-overview { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(280px, .8fr); gap: clamp(40px, 8vw, 110px); align-items: start; }
.btf-single-copy h2,
.btf-single-playlist h2 { margin: 0 0 20px; color: #fff; font-size: clamp(30px, 4vw, 48px); line-height: 1.05; }
.btf-single-description { color: var(--btf-grey); font-size: 17px; line-height: 1.75; }
.btf-single-description p { margin: 0 0 1em; }

.btf-single-facts { margin: 0; border-top: 1px solid var(--btf-line); }
.btf-single-facts > div { display: grid; grid-template-columns: 110px 1fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--btf-line); }
.btf-single-facts dt { color: var(--btf-muted); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.btf-single-facts dd { margin: 0; color: #fff; font-weight: 700; text-align: right; }

.btf-single-player { position: relative; margin-top: clamp(50px, 7vw, 90px); overflow: hidden; border: 1px solid var(--btf-line); border-radius: 14px; background: #080808; aspect-ratio: 16 / 9; }
.btf-single-player iframe,
.btf-single-player video { display: block; width: 100%; height: 100%; border: 0; }
.btf-single-player-empty { display: grid; place-items: center; color: var(--btf-muted); }

.btf-single-playlist { display: flex; align-items: center; justify-content: space-between; gap: 32px; margin-top: 34px; padding: clamp(28px, 5vw, 48px); border: 1px solid var(--btf-line); border-radius: 14px; background: var(--btf-panel); }
.btf-single-playlist h2 { margin-bottom: 10px; font-size: clamp(26px, 3vw, 38px); }
.btf-single-playlist p:last-child { margin: 0; color: var(--btf-muted); }
.btf-single-playlist a { flex: 0 0 auto; padding: 14px 18px; border-radius: 7px; background: var(--btf-gold); color: #000; font-weight: 800; text-decoration: none; }
.btf-single-playlist a:hover { filter: brightness(1.08); }

@media (max-width: 760px) {
    .btf-single-inner { width: min(100% - 28px, 1180px); }
    .btf-single-hero,
    .btf-single-hero-content { min-height: 430px; }
    .btf-single-hero-overlay { background: rgba(0, 0, 0, .76); }
    .btf-single-back { margin-bottom: 40px; }
    .btf-single-overview { grid-template-columns: 1fr; }
    .btf-single-playlist { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    .btf-single-playlist a { transition: none; }
}