/**
 * BAIRS — Sticky storytelling
 * Media sticky a un lado mientras el texto scrollea, con crossfade entre frames.
 */

.bairs-sticky-story {
    background: var(--color-bg-0, #07090d);
    padding: clamp(48px, 8vw, 96px) clamp(20px, 6vw, 64px);
    color: #fff;
    border-top: 1px solid var(--color-line, rgba(255,255,255,0.08));
}

.bairs-sticky-story-header {
    max-width: 1200px;
    margin: 0 auto var(--space-12, 48px);
}

.bairs-sticky-story-eyebrow {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary-soft, #38bdf8);
    margin-bottom: var(--space-3, 12px);
    display: inline-block;
}

.bairs-sticky-story-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 64px);
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin: 0;
    text-wrap: balance;
    max-width: 800px;
}

.bairs-sticky-story-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8, 32px);
}

@media (min-width: 900px) {
    .bairs-sticky-story-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-16, 64px);
    }
}

/* ─── Columna media sticky ─── */
.bairs-sticky-story-media {
    position: relative;
    height: 60vh;
    min-height: 400px;
    border-radius: var(--radius-lg, 20px);
    overflow: hidden;
    background: var(--color-bg-2, #1a2230);
}

@media (min-width: 900px) {
    .bairs-sticky-story-media {
        position: sticky;
        top: 100px;
        height: 70vh;
        max-height: 600px;
    }
}

.bairs-sticky-story-frame {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity var(--dur-narrative, 700ms) var(--ease-out, ease);
    pointer-events: none;
}

.bairs-sticky-story-frame.is-active {
    opacity: 1;
    pointer-events: auto;
}

.bairs-sticky-story-frame img,
.bairs-sticky-story-frame video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.bairs-sticky-story-frame-placeholder {
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 30% 30%, rgba(56,189,248,0.18), transparent 55%),
        radial-gradient(circle at 70% 70%, rgba(0,212,255,0.14), transparent 55%),
        var(--color-bg-2, #1a2230);
}

/* ─── Columna texto scrolleable ─── */
.bairs-sticky-story-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-12, 48px);
}

.bairs-sticky-story-block {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-6, 24px) 0;
    opacity: 0.4;
    transition: opacity var(--dur-narrative, 700ms) var(--ease-out, ease);
}

@media (max-width: 899px) {
    .bairs-sticky-story-block {
        min-height: auto;
        opacity: 1;
    }
}

.bairs-sticky-story-block.is-active {
    opacity: 1;
}

.bairs-sticky-story-block-num {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--color-primary-soft, #38bdf8);
    margin-bottom: var(--space-3, 12px);
    display: block;
}

.bairs-sticky-story-block-title {
    font-family: var(--font-display);
    font-size: clamp(24px, 3vw, 40px);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: #fff;
    margin: 0 0 var(--space-4, 16px);
    text-wrap: balance;
}

.bairs-sticky-story-block-text {
    color: rgba(255,255,255,0.78);
    font-size: 16px;
    line-height: 1.65;
    max-width: 60ch;
}

@media (prefers-reduced-motion: reduce) {
    .bairs-sticky-story-frame,
    .bairs-sticky-story-block { transition: none; }
    .bairs-sticky-story-frame { opacity: 1; }
    .bairs-sticky-story-block { opacity: 1; }
}