/* Open Academy — fixed peripheral ad regions (shared home + modules) */

:root {
    --oads-ad-rail-max: 300px;
    --oads-ad-rail-min: 240px;
    --oads-ad-gap: 22px;
    --oads-ad-border: rgba(148, 163, 184, 0.2);
    --oads-ad-bg: rgba(255, 255, 255, 0.03);
    --oads-ad-muted: rgba(148, 163, 184, 0.85);
}

:root[data-theme='light'] {
    --oads-ad-border: rgba(15, 23, 42, 0.12);
    --oads-ad-bg: rgba(15, 23, 42, 0.04);
    --oads-ad-muted: rgba(71, 85, 105, 0.9);
}

/* ── Home (marketing) page ── */
.oads-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(var(--oads-ad-rail-min), var(--oads-ad-rail-max));
    gap: var(--oads-ad-gap);
    align-items: start;
}

.oads-layout.oads-no-side-ads {
    grid-template-columns: minmax(0, 1fr);
}

.oads-layout__main {
    min-width: 0;
}

.oads-layout__rail {
    position: sticky;
    top: 20px;
    min-width: 0;
}

.oads-ad-rail--empty {
    display: none !important;
}

.oads-ad-shell {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 14px;
    border-radius: 18px;
    border: 1px solid var(--oads-ad-border);
    background: var(--oads-ad-bg);
    min-height: 250px;
    box-sizing: border-box;
}

.oads-ad-label {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--oads-ad-muted);
}

.oads-ad-inner {
    flex: 1;
    min-height: 200px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    overflow: hidden;
}

.oads-ad-inner .adsbygoogle {
    width: 100% !important;
}

/* ── Module trainer (engine layout) ── */
.oads-module-stage {
    display: flex;
    flex: 1;
    min-height: 0;
    min-width: 0;
    overflow: hidden;
}

.oads-module-stage .main-content {
    min-width: 0;
}

.oads-module-stage.oads-no-side-ads .main-content {
    flex: 1;
}

.oads-module-ad-rail {
    width: var(--oads-ad-rail-max);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    padding: 16px 16px 16px 0;
    border-left: 1px solid var(--color-border);
    background: var(--color-bg-primary);
    overflow-y: auto;
    box-sizing: border-box;
}

.oads-module-ad-rail .oads-ad-shell {
    position: sticky;
    top: 12px;
    min-height: 280px;
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
}

.oads-module-stage.oads-no-side-ads .oads-module-ad-rail {
    display: none;
}

@media (max-width: 1100px) {
    .oads-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .oads-layout__rail {
        position: static;
        order: 1;
        max-width: min(100%, 360px);
        margin: 0 auto;
    }

    .oads-layout__main {
        order: 0;
    }

    .oads-module-stage {
        flex-direction: column;
    }

    .oads-module-ad-rail {
        width: 100%;
        max-height: none;
        border-left: none;
        border-top: 1px solid var(--color-border);
        padding: 16px;
        overflow-y: visible;
    }

    .oads-module-ad-rail .oads-ad-shell {
        position: static;
        max-width: min(100%, 360px);
        margin: 0 auto;
    }
}