/* ==========================================================================
   Página de caso de estudio (una por proyecto)
   Medios (video + galería) a un lado de la información; la columna de
   medios se queda fija mientras lees en escritorio.
   ========================================================================== */

.case {
    --erosion: 0;
    background-color: #0D0E15;
    padding-bottom: 80px;
}

/* ---------- Encabezado ---------- */
.case-hero {
    padding: clamp(28px, 5vh, 48px) max(24px, calc((100% - 1160px) / 2)) clamp(32px, 6vh, 56px);
    background: linear-gradient(160deg, #1D2D44 0%, #16233A 60%, #0D0E15 100%);
}

.case-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 44px;
    color: #D1D5DB;
    font-weight: 700;
    text-decoration: none;
}

.case-back:hover,
.case-back:focus-visible {
    color: #10B981;
}

.case-eyebrow {
    margin: 12px 0 8px;
    color: #10B981;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

/* El título se "erosiona" según cuánto has leído (--erosion de 0 a 1) */
.case-title {
    margin: 0;
    color: #F3F4F6;
    font-family: 'MiFuentePersonalizada', 'Oswald', sans-serif;
    font-size: clamp(2.8rem, 8vw, 5.5rem);
    line-height: 1;
    letter-spacing: 2px;
    text-shadow:
        calc(var(--erosion) * -4px) 0 rgba(239, 68, 68, 0.55),
        calc(var(--erosion) * 4px) 0 rgba(16, 185, 129, 0.55);
}

.case-tagline {
    max-width: 640px;
    margin: 16px 0 0;
    color: #D1D5DB;
    font-size: 1.2rem;
    line-height: 1.6;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 16px;
    margin-top: 20px;
}

.case-tags .project-status {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* ---------- Rejilla: medios | información ---------- */
.case-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 4vw, 56px);
    width: min(100% - 48px, 1160px);
    margin: 40px auto 0;
}

.case-media {
    position: sticky;
    top: 84px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* ---------- Galería ---------- */
.slider {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    background: #000;
    outline-offset: 4px;
}

.slider:focus:not(:focus-visible) {
    outline: none;
}

.slider-track {
    position: relative;
    aspect-ratio: 16 / 9;
}

.slide {
    position: absolute;
    inset: 0;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s;
}

.slide.is-active {
    visibility: visible;
    opacity: 1;
}

.slide img,
.slide .yt-frame {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
    object-fit: contain;
    background: #000;
}

.slide .yt-facade img {
    object-fit: cover;
}

.slide:not(:first-child) img {
    cursor: zoom-in;
}

.slider .erosion-scan {
    opacity: calc(var(--erosion) * 0.55);
    transition: none;
    z-index: 1;
}

.slider:has(.slide.is-active iframe) .erosion-scan {
    display: none;
}

.slider-arrow {
    position: absolute;
    top: 50%;
    z-index: 2;
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    margin-top: -22px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    background: rgba(13, 14, 21, 0.7);
    color: #F3F4F6;
    font-size: 1.2rem;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.slider-arrow:hover,
.slider-arrow:focus-visible {
    color: #10B981;
    border-color: #10B981;
}

.slider-arrow.prev { left: 12px; }
.slider-arrow.next { right: 12px; }

.slider-counter {
    position: absolute;
    right: 14px;
    bottom: 12px;
    z-index: 2;
    margin: 0;
    padding: 3px 10px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.6);
    color: #F3F4F6;
    font-size: 0.8rem;
    pointer-events: none;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.slider-dots button {
    width: 28px;
    height: 6px;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: rgba(243, 244, 246, 0.2);
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.slider-dots button[aria-current="true"] {
    background: #10B981;
}

/* ---------- Medidor de Erosión ---------- */
.case-erosion {
    padding: 14px 16px;
    border: 1px solid rgba(243, 244, 246, 0.1);
    border-radius: 14px;
    background: rgba(29, 45, 68, 0.4);
}

.case-erosion-head {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    color: #9CA3AF;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.case-erosion-value {
    color: #F3F4F6;
    font-variant-numeric: tabular-nums;
}

.case-erosion .erosion-bar > span {
    width: calc(var(--erosion) * 100%);
    transition: none;
}

.case-erosion-hint,
.case-erosion-end {
    margin: 8px 0 0;
    color: #6B7280;
    font-size: 0.8rem;
}

.case-erosion-end {
    display: none;
    color: #FCA5A5;
}

.case.is-eroded .case-erosion-hint {
    display: none;
}

.case.is-eroded .case-erosion-end {
    display: block;
}

/* ---------- Información ---------- */
.case-body h2 {
    margin: 40px 0 16px;
    color: #F3F4F6;
    font-family: 'Oswald', sans-serif;
    font-size: 1.6rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.case-lead {
    margin: 0;
    color: #F3F4F6;
    font-size: 1.2rem;
    line-height: 1.65;
}

.case-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.case-stats li {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px 18px;
    border: 1px solid rgba(243, 244, 246, 0.1);
    border-radius: 14px;
    background: rgba(29, 45, 68, 0.4);
}

.case-stats strong {
    color: #F3F4F6;
    font-family: 'Oswald', sans-serif;
    font-size: 1.7rem;
    line-height: 1.1;
}

.case-stats span {
    color: #9CA3AF;
    font-size: 0.9rem;
}

/* Secciones plegables: se lee lo esencial y se abre lo que interese */
.case-body details {
    border-top: 1px solid rgba(243, 244, 246, 0.1);
}

.case-body details:last-of-type {
    border-bottom: 1px solid rgba(243, 244, 246, 0.1);
}

.case-body summary {
    position: relative;
    padding: 18px 40px 18px 0;
    color: #F3F4F6;
    font-family: 'Oswald', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    list-style: none;
    cursor: pointer;
}

.case-body summary::-webkit-details-marker {
    display: none;
}

.case-body summary::after {
    content: '+';
    position: absolute;
    right: 4px;
    top: 50%;
    margin-top: -0.65em;
    color: #10B981;
    font-family: 'Arimo', sans-serif;
    font-size: 1.5rem;
    line-height: 1.3;
    transition: transform 0.2s ease;
}

.case-body details[open] summary::after {
    transform: rotate(45deg);
}

.case-body summary:hover,
.case-body summary:focus-visible {
    color: #10B981;
}

.case-body details p {
    margin: 0 0 18px;
    color: #D1D5DB;
    font-size: 1.05rem;
    line-height: 1.75;
}

/* ---------- Apoyo / inversión ---------- */
.case-invest {
    margin-top: 40px;
    padding: 24px;
    border: 1px solid rgba(16, 185, 129, 0.35);
    border-radius: 18px;
    background: rgba(16, 185, 129, 0.06);
}

.case-invest h2 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.4rem;
}

.case-invest p {
    margin: 0 0 18px;
    color: #D1D5DB;
    line-height: 1.6;
}

.case-invest-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

/* ---------- Imagen ampliada ---------- */
.lightbox {
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 24px;
    border: 0;
    background: transparent;
    cursor: zoom-out;
}

.lightbox[open] {
    display: grid;
    place-items: center;
}

.lightbox::backdrop {
    background: rgba(0, 0, 0, 0.92);
}

.lightbox img {
    max-width: 100%;
    max-height: 100%;
    border-radius: 12px;
    object-fit: contain;
}

/* ---------- Móvil ---------- */
@media (max-width: 900px) {
    .case-grid {
        grid-template-columns: minmax(0, 1fr);
        width: min(100% - 40px, 680px);
        margin-top: 24px;
    }

    .case-media {
        position: static;
    }

    .case-hero {
        padding: 16px 20px 36px;
    }
}

@media (max-width: 480px) {
    .case-stats strong {
        font-size: 1.4rem;
    }

    .case-invest-actions .btn {
        flex: 1 1 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .case-title {
        text-shadow: none;
    }

    .slide,
    .slider-arrow,
    .slider-dots button,
    .case-body summary::after {
        transition: none;
    }
}