/* Fondo ambiental reutilizable para las investigaciones. */
body.study-ambient-page {
    --study-backdrop-opacity: 0.38;
    --study-backdrop-shift: 0px;
    --study-backdrop-scale: 1.08;
    --study-panel-fill: rgba(255, 255, 255, 0.68);
    --study-panel-border: rgba(0, 0, 0, 0.09);
    background: transparent !important;
    isolation: isolate;
}

html.dark body.study-ambient-page {
    --study-backdrop-opacity: 0.42;
    --study-panel-fill: rgba(18, 18, 20, 0.48);
    --study-panel-border: rgba(255, 255, 255, 0.13);
}

.study-ambient-backdrop {
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    position: fixed;
    z-index: 0;
}

.study-stars {
    display: block;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.study-stars-night {
    position: absolute;
    inset: 0;
    background: #03070a;
    opacity: var(--study-outro-progress, 0);
}

.study-stars-outro {
    height: 160vh;
    height: 160svh;
    pointer-events: none;
}

body.study-outro-active > :is(main, .header, .footer) {
    opacity: var(--study-reading-opacity, 1) !important;
}

body.study-outro-immersed > :is(main, .header, .footer) {
    visibility: hidden;
    pointer-events: none;
}

body.study-outro-active .study-stars-veil {
    opacity: calc(1 - var(--study-outro-progress, 0));
}

.study-stars-veil {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3) 30%,
        rgba(255, 255, 255, 0.5) 50%, rgba(255, 255, 255, 0.3) 70%, transparent);
}

html.dark .study-stars-veil {
    background: linear-gradient(90deg, transparent, rgba(3, 3, 3, 0.22) 25%,
        rgba(3, 3, 3, 0.55) 50%, rgba(3, 3, 3, 0.22) 75%, transparent);
}

@media print {
    .study-ambient-backdrop, .study-stars-outro { display: none; }
    body.study-outro-active > :is(main, .header, .footer) {
        opacity: 1 !important;
        visibility: visible;
    }
}

.study-ambient-backdrop__image,
.study-ambient-backdrop__tint {
    inset: -7vmax;
    position: absolute;
}

.study-ambient-backdrop__image {
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    filter: blur(22px) saturate(1.12);
    opacity: var(--study-backdrop-opacity);
    transform: translate3d(0, var(--study-backdrop-shift), 0) scale(var(--study-backdrop-scale));
    transform-origin: center;
    will-change: transform, opacity;
}

.study-ambient-backdrop__tint {
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.70) 0%,
        rgba(255, 255, 255, 0.82) 34%,
        rgba(255, 255, 255, 0.90) 100%
    );
}

html.dark .study-ambient-backdrop__tint {
    background: linear-gradient(
        180deg,
        rgba(3, 3, 3, 0.54) 0%,
        rgba(3, 3, 3, 0.69) 34%,
        rgba(3, 3, 3, 0.84) 100%
    );
}

body.study-ambient-page > .header {
    z-index: 100;
}

body.study-ambient-page > main,
body.study-ambient-page > .footer {
    position: relative;
    z-index: 1;
}

body.study-ambient-page main,
body.study-ambient-page .hero,
body.study-ambient-page .testimony-section,
html:not(.dark) body.study-ambient-page main,
html:not(.dark) body.study-ambient-page .hero,
html:not(.dark) body.study-ambient-page .testimony-section {
    background: transparent !important;
}

body.study-ambient-page .hero-title,
body.study-ambient-page .study-kicker,
body.study-ambient-page .back-link {
    text-shadow: 0 1px 18px rgba(255, 255, 255, 0.42);
}

html.dark body.study-ambient-page .hero-title,
html.dark body.study-ambient-page .study-kicker,
html.dark body.study-ambient-page .back-link {
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.72);
}

/* Override legacy opaque theme rules only inside teaching content. */
body.study-ambient-page .testimony-content :is(
    .study-meta, .study-heading-block, .study-text-block, .text-block, .lead-box, .principle-box,
    .verse-block, .note-box, .warning-box, .opinion-box, .doctrine-card,
    .reality-card, .truth-map, .truth-point, .history-map, .timeline-step,
    .timeline-stage, .timeline-branch, .intro-card, .law-card, .evidence-card,
    .comparison-card, .definition-card, .discernment-card, .priority-card,
    .experience-card, .approach-card, .letter-card, .contrast-card,
    .card-note, .map-note, .passage-table, .comparison-table-wrap,
    .quote-block, .highlight-box, .faith-pressure, .greek-line,
    .download-resource, .final-summary
) {
    background: var(--study-panel-fill) !important;
    border-color: var(--study-panel-border) !important;
    -webkit-backdrop-filter: blur(18px) saturate(1.18);
    backdrop-filter: blur(18px) saturate(1.18);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.06) !important;
}

body.study-ambient-page .testimony-content :is(
    .comparison-stack, .contrast-grid, .definition-grid, .discernment-grid,
    .priority-grid, .experience-grid, .approach-grid, .law-grid,
    .evidence-grid, .letter-grid, .before-now, .wide-study-content
) {
    background: transparent !important;
    box-shadow: none !important;
}

body.study-ambient-page .testimony-content :is(.study-text-block, .text-block) {
    border: 1px solid var(--study-panel-border);
    border-left-width: 3px;
    border-radius: 18px;
    color: var(--text-muted);
    line-height: 1.65;
    margin: 1.6rem 0 2rem;
    padding: 1.5rem;
}

body.study-ambient-page .testimony-content .study-heading-block {
    border: 1px solid var(--study-panel-border);
    border-radius: 18px;
    margin: 3.2rem 0 1.2rem;
    padding: 1.2rem 1.5rem;
    break-inside: avoid;
    break-after: avoid;
}

/* Mark the transition to the next numbered point. */
body.study-ambient-page .testimony-content .study-heading-block ~ .study-heading-block {
    position: relative;
    margin-top: 5.4rem;
}

body.study-ambient-page .study-heading-block ~ .study-heading-block::before,
body.study-ambient-page .study-heading-block ~ .study-heading-block::after {
    content: "";
    position: absolute;
    top: -2.7rem;
    left: 50%;
    pointer-events: none;
}

body.study-ambient-page .study-heading-block ~ .study-heading-block::before {
    width: min(64%, 22rem);
    height: 1px;
    transform: translateX(-50%);
    background: linear-gradient(90deg,
        transparent,
        color-mix(in srgb, var(--accent) 45%, transparent) 35%,
        color-mix(in srgb, var(--accent) 65%, transparent) calc(50% - 14px),
        transparent calc(50% - 14px),
        transparent calc(50% + 14px),
        color-mix(in srgb, var(--accent) 65%, transparent) calc(50% + 14px),
        color-mix(in srgb, var(--accent) 45%, transparent) 65%,
        transparent);
}

body.study-ambient-page .study-heading-block ~ .study-heading-block::after {
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 1px;
    transform: translate(-50%, -50%) rotate(45deg);
    background: var(--accent);
    box-shadow: 0 0 14px 3px color-mix(in srgb, var(--accent) 20%, transparent);
}

body.study-ambient-page .study-heading-block > .standalone-section-heading {
    color: var(--text-main);
    font-family: var(--font-heading);
    font-size: clamp(1.2rem, 1rem + 0.65vw, 1.5rem);
    font-weight: 700;
    letter-spacing: -0.015em;
    line-height: 1.35;
    margin: 0;
    overflow-wrap: anywhere;
    text-transform: none;
    text-wrap: pretty;
}

body.study-ambient-page .testimony-content :is(
    .study-text-block, .text-block, .lead-box, .verse-block, .note-box,
    .warning-box, .opinion-box, .principle-box, .final-summary, .highlight-box, .greek-line
) > .section-label {
    margin: 0 0 1rem;
}

body.study-ambient-page .study-text-block > p + p {
    margin-top: 1.15rem;
}

body.study-ambient-page :is(.study-text-block, .text-block) > :first-child {
    margin-top: 0;
}

body.study-ambient-page :is(.study-text-block, .text-block) > :last-child {
    margin-bottom: 0;
}

body.study-ambient-page .testimony-content .note-box {
    --study-panel-fill: rgba(244, 250, 255, 0.68);
}

body.study-ambient-page .testimony-content .warning-box {
    --study-panel-fill: rgba(255, 247, 232, 0.68);
}

body.study-ambient-page .testimony-content .opinion-box {
    --study-panel-fill: rgba(247, 245, 255, 0.68);
}

html.dark body.study-ambient-page .note-box {
    --study-panel-fill: rgba(18, 38, 60, 0.48);
}

html.dark body.study-ambient-page .warning-box {
    --study-panel-fill: rgba(54, 39, 12, 0.48);
}

html.dark body.study-ambient-page .opinion-box {
    --study-panel-fill: rgba(35, 30, 62, 0.48);
}

body.study-ambient-page .testimony-content .final-summary,
body.study-ambient-page .testimony-content .final-summary :is(h2, strong, .editor-text-wrapper) {
    color: var(--text-main) !important;
}

body.study-ambient-page .testimony-content .final-summary p {
    color: var(--text-muted) !important;
    opacity: 1;
}

body.study-ambient-page .footer {
    background: transparent;
}

@media (max-width: 760px) {
    body.study-ambient-page .testimony-content .study-heading-block {
        padding: 1.1rem 1.4rem;
    }

    body.study-ambient-page .testimony-content .study-heading-block ~ .study-heading-block {
        margin-top: 4.6rem;
    }

    body.study-ambient-page .study-heading-block ~ .study-heading-block::before,
    body.study-ambient-page .study-heading-block ~ .study-heading-block::after {
        top: -2.3rem;
    }

    body.study-ambient-page .testimony-content :is(.study-text-block, .text-block) {
        padding: 1.4rem;
    }

    body.study-ambient-page {
        --study-backdrop-opacity: 0.32;
        --study-backdrop-scale: 1.12;
    }

    .study-ambient-backdrop__image {
        background-position: center top;
        filter: blur(16px) saturate(1.08);
    }

    .study-ambient-backdrop__tint {
        background: linear-gradient(
            180deg,
            rgba(255, 255, 255, 0.73) 0%,
            rgba(255, 255, 255, 0.86) 38%,
            rgba(255, 255, 255, 0.93) 100%
        );
    }

    html.dark .study-ambient-backdrop__tint {
        background: linear-gradient(
            180deg,
            rgba(3, 3, 3, 0.58) 0%,
            rgba(3, 3, 3, 0.73) 38%,
            rgba(3, 3, 3, 0.87) 100%
        );
    }
}

@media (prefers-reduced-motion: reduce) {
    .study-ambient-backdrop__image {
        transform: scale(1.08);
        will-change: auto;
    }
}