/**
 * Home Grid - Nomad Labs
 *
 * 4 vertical columns with scroll-driven infinite loop.
 * Columns 1 & 3: content enters from top (scroll down).
 * Columns 2 & 4: content enters from bottom (scroll up).
 *
 * @package NomadLabs
 */

/* ============================================
   SECTION — fullscreen, no native scroll needed
   ============================================ */

   .home-grid {
    position: relative;
    height: 100vh;
    background: transparent;
}

/* ============================================
   CENTERED LOGO
   ============================================ */

.home-grid__logo {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: var(--z-overlay, 50);
    pointer-events: none;
    will-change: opacity;
}

.home-grid__logo img,
.home-grid__logo svg {
    display: block;
    width: 80vw;
    height: auto;
    max-width: 80vw;
}

/* Tuerca del logo — rota siguiendo el cursor como aguja de brújula.
   transform-box:fill-box + transform-origin:center hace que el rotate
   use el centro geométrico del propio grupo, no del viewBox global.
   Sin transición CSS aquí: el lerp del JS (logo-spin.js) suaviza todo. */
#nl-asterisk {
    transform-box: fill-box;
    transform-origin: center;
}

/* ============================================
   LIST BUTTON — bottom center
   ============================================ */

.home-grid__list-btn {
    position: fixed;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-header, 100);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 4px;
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    background-color: rgba(245, 245, 245, 0.7);
    color: var(--color-text, #1A1A1A);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    letter-spacing: -.015em;
    text-decoration: none;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.home-grid__list-btn svg {
    flex-shrink: 0;
}

/* Hover gating estricto (patrón canadacanada): sólo en dispositivos con
   puntero preciso (mouse). En móvil/táctil el :hover queda "sticky" tras
   tap y genera UX sucia. `pointer: fine` filtra esos casos. */
@media (hover: hover) and (pointer: fine) {
    .home-grid__list-btn:hover {
        opacity: 0.8;
    }
}

/* ============================================
   VIEWPORT — fills section
   ============================================ */

.home-grid__sticky {
    height: 100%;
}

/* ============================================
   COLUMNS LAYOUT
   ============================================ */

.home-grid__columns {
    display: flex;
    gap: 16px;
    height: 100%;
    padding: 0 var(--grid-padding);
    overflow: hidden;
    contain: strict;
}

.home-grid__col {
    flex: 1;
    min-width: 0;
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transform: translate3d(0, 0, 0);
    visibility: hidden;
}

/* ============================================
   TRACK — vertical flex, JS clones for loop
   ============================================ */

.home-grid__track {
    display: flex;
    flex-direction: column;
    gap: var(--grid-gap);
}

/* ============================================
   GRID ITEMS
   ============================================ */

/* La columna es el container-query context. Cambia de ancho según viewport
   (4/3/2/1 columnas) → cqw refleja el tamaño real del tile. */
.home-grid__col {
    container-type: inline-size;
}

.grid-item {
    display: block;
    width: 100%;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    /* Radius escalado al ancho del tile (patrón canadacanada):
       4px mínimo, 2.5cqw de la columna, 14px máximo. Un tile grande
       tiene esquinas más redondeadas que uno pequeño — visualmente
       correcto en cualquier densidad del grid. */
    border-radius: clamp(4px, 2.5cqw, 14px);
    cursor: pointer;
    contain: layout style paint;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

/* ============================================
   ITEM SIZES — aspect-ratio controls height
   ============================================ */

.grid-item--tall {
    aspect-ratio: 3 / 5;
}

.grid-item--medium {
    aspect-ratio: 3 / 4;
}

.grid-item--short {
    aspect-ratio: 4 / 3;
}

.grid-item--wide {
    aspect-ratio: 16 / 10;
}

.grid-item--square {
    aspect-ratio: 1 / 1;
}

.grid-item--xtall {
    aspect-ratio: 2 / 5;
}

/* ============================================
   MEDIA
   ============================================ */

.grid-item__media {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #111;
    contain: strict;
}

.grid-item__img,
.grid-item__video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

/* ============================================
   ARROW — top right, always visible
   ============================================ */

.grid-item__arrow {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 4;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    background-color: rgba(245, 245, 245, 0.7);
    color: var(--color-text, #1A1A1A);
    pointer-events: none;
}

/* ============================================
   TITLE LABEL — bottom left, always visible
   ============================================ */

.grid-item__label {
    position: absolute;
    bottom: 10px;
    left: 10px;
    z-index: 4;
    padding: 6px 12px;
    border-radius: 4px;
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    background-color: rgba(245, 245, 245, 0.7);
    color: var(--color-text, #1A1A1A);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--tracking-wide);
    pointer-events: none;
    max-width: calc(100% - 20px);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================
   VIDEO ITEMS
   ============================================ */

.grid-item__poster {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 2;
    transition: opacity 0.5s var(--ease-out);
}

.grid-item--video.is-playing .grid-item__poster {
    opacity: 0;
    pointer-events: none;
}

/* Crossfade simétrico (patrón canadacanada): video arranca en opacity 0
   y hace fade-in 500ms al confirmar playback. Duración sincronizada con
   el fade-out del poster → ambos cruzan en t≈250ms, sin pop visual. */
.grid-item__video {
    transition: opacity 0.5s var(--ease-out);
}
.grid-item--video[data-video-behavior="hover"] .grid-item__video {
    opacity: 0;
}
.grid-item--video.is-playing .grid-item__video {
    opacity: 1;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1200px) {
    /* Hide 4th column */
    .home-grid__col:nth-child(4) {
        display: none;
    }
}

@media (max-width: 809px) {
    .home-grid__columns {
        gap: 8px;
    }

    /* Aspect-ratio responsivo (patrón canadacanada): en pantallas estrechas
       suavizamos las proporciones extremas para que las cards no queden
       kilométricas verticalmente. */
    .grid-item--xtall { aspect-ratio: 3 / 5; }
    .grid-item--wide  { aspect-ratio: 4 / 3; }

    .grid-item__label {
        font-size: 10px;
        padding: 4px 8px;
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        background-color: rgba(245, 245, 245, 0.85);
    }

    .grid-item__arrow {
        width: 20px;
        height: 20px;
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        background-color: rgba(245, 245, 245, 0.85);
    }

    .grid-item__arrow svg {
        width: 10px;
        height: 10px;
    }

    .home-grid__list-btn {
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        background-color: rgba(245, 245, 245, 0.85);
    }

    .home-grid__logo img,
    .home-grid__logo svg {
        max-width: 90vw;
    }

    /* 2 columns on tablet */
    .home-grid__col:nth-child(n+3) {
        display: none;
    }
}

@media (max-width: 480px) {
    /* 2 columns on mobile */
    .home-grid__col:nth-child(n+3) {
        display: none;
    }
}