/* ============================================================================
   BREAKLINE SECURITY — Episodes ("See It In Action")
   Homepage #episodes section + episode-NN.html pages. Everything else reuses
   redesign.css components (.section, .principles-grid, .principle, .pillars,
   .page-header, buttons).
   ========================================================================== */

/* Four cards across on desktop; redesign.css defaults .principles-grid to 3.
   The 768px rule is required: .principles-grid.ep-grid out-ranks the site's
   generic single-column rule. */
.principles-grid.ep-grid { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1100px) and (min-width: 769px) {
    .principles-grid.ep-grid { grid-template-columns: repeat(2, 1fr); }
    .principles-grid.ep-grid .principle:nth-child(2) { border-right: none; }
    .principles-grid.ep-grid .principle:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
}

@media (max-width: 768px) {
    .principles-grid.ep-grid { grid-template-columns: 1fr; }
}

/* Click-to-play video with a poster; 4:5 matches the exported episodes. */
.ep-video {
    aspect-ratio: 4 / 5;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg);
    margin-bottom: var(--sp-6);
}

.ep-video video {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

/* Card links. .t-accent on plain links renders white elsewhere, hence the
   explicit colour here. */
.ep-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    font-size: 0.85rem;
}

.ep-link.t-accent,
.p-title .t-accent { color: var(--accent); }

.ep-link.muted { color: var(--text-3); font-weight: 500; }

.ep-link:hover { text-decoration: underline; text-underline-offset: 0.2em; }

.ep-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-5);
    margin-top: 1.25rem;
}

/* Episode switcher on each episode page: every episode, current one marked. */
.ep-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-3);
    margin-bottom: var(--sp-12);
}

.ep-nav-item {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--bg-2);
    color: var(--text-2);
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1.2;
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.ep-nav-item:hover { color: var(--text); border-color: var(--text-3); }

.ep-nav-item.is-current {
    color: var(--on-accent);
    background: var(--accent);
    border-color: var(--accent);
}

.ep-nav-num {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    opacity: 0.75;
}

/* Episode page: video left, "In This Episode" right. */
.ep-split {
    display: grid;
    grid-template-columns: minmax(0, 420px) 1fr;
    gap: var(--sp-16);
    align-items: start;
}

@media (max-width: 900px) {
    .ep-split { grid-template-columns: 1fr; gap: var(--sp-10); }
}

.ep-split .ep-video { margin: 0; }

.ep-actions { margin-top: var(--sp-8); }

/* "Who it's for" pair under the split, reusing .prose-block. */
.ep-who {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-8);
    margin-top: var(--sp-16);
}

@media (max-width: 768px) {
    .ep-who { grid-template-columns: 1fr; }
}

.ep-who .prose-block { margin-bottom: 0; }

/* Previous / next episode. */
.ep-pager {
    display: flex;
    justify-content: space-between;
    gap: var(--sp-6);
    flex-wrap: wrap;
    margin-top: var(--sp-16);
    padding-top: var(--sp-8);
    border-top: 1px solid var(--border);
}

/* Frames: one real screen per pillar, under the split. Click opens the full image. */
.ep-frames {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-4);
    margin-top: var(--sp-12);
}

@media (max-width: 1100px) { .ep-frames { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .ep-frames { grid-template-columns: 1fr; } }

.ep-frame { margin: 0; min-width: 0; }

.ep-frame a {
    display: block;
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    background: var(--bg-3);
    transition: border-color 0.2s;
}

.ep-frame a:hover { border-color: var(--accent-border); }

.ep-frame img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    object-position: top left;
}

.ep-frame figcaption {
    margin-top: 0.5rem;
    font-size: 0.78rem;
    line-height: 1.45;
    color: var(--text-3);
}

.ep-frame .ep-frame-n {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-right: 0.35rem;
}