/* ============================================================
   ClickBox — Portafolio Profesional
   Galería con hover, overlay y animaciones de entrada
   ============================================================ */

:root {
    --pf-verde:  #51d728;
    --pf-morado: #3b2de0;
    --pf-dark:   #060927;
    --pf-text:   #1a1a3e;
    --pf-muted:  #5a5a8a;
    --pf-ease:   cubic-bezier(.4,0,.2,1);
}

/* ============================================================
   SECCIÓN
   ============================================================ */
.cb-portafolio {
    background: #fff;
    padding: 80px 24px;
    position: relative;
    overflow: hidden;
}

/* Acentos blur de fondo */
.cb-portafolio::before,
.cb-portafolio::after {
    content: '';
    position: absolute;
    width: 360px; height: 360px;
    border-radius: 50%;
    filter: blur(120px);
    z-index: 0;
    pointer-events: none;
}
.cb-portafolio::before { top: -120px; right: -120px; background: rgba(81,215,40,.10); }
.cb-portafolio::after  { bottom: -120px; left: -120px;  background: rgba(59,45,224,.10); }

.cb-portafolio__container {
    position: relative;
    z-index: 1;
    max-width: 1380px;
    margin: 0 auto;
}

/* ============================================================
   ENCABEZADO
   ============================================================ */
.cb-portafolio__head {
    text-align: center;
    margin-bottom: 56px;
}

.cb-portafolio__eyebrow {
    display: inline-block;
    font-family: 'Montserrat', sans-serif;
    font-size: .8rem;
    font-weight: 800;
    letter-spacing: .25em;
    text-transform: uppercase;
    color: var(--pf-verde);
    padding: 8px 20px;
    border: 1.5px solid rgba(81,215,40,.4);
    border-radius: 50px;
    background: rgba(81,215,40,.08);
    margin-bottom: 20px;
}

.cb-portafolio__title {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 900;
    color: var(--pf-text);
    line-height: 1.1;
    letter-spacing: -.01em;
    margin: 0 0 16px;
}
.cb-portafolio__title em {
    font-style: normal;
    background: linear-gradient(135deg, var(--pf-verde) 0%, var(--pf-morado) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cb-portafolio__sub {
    font-size: 17px;
    color: var(--pf-muted);
    max-width: 580px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ============================================================
   GRID — 3 o 4 items
   ============================================================ */
.cb-portafolio__grid {
    display: grid;
    gap: 24px;
}

/* Variante 3 items: 3 columnas iguales */
.cb-portafolio__grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Variante 4 items: grid uniforme 2×2 — limpio y profesional */
.cb-portafolio__grid--4 {
    grid-template-columns: repeat(2, 1fr);
}

/* ============================================================
   ITEM (botón clickeable de imagen)
   ============================================================ */
.cb-portafolio__item {
    position: relative;
    overflow: hidden;
    border-radius: 16px;
    margin: 0;
    padding: 0;
    border: none;
    aspect-ratio: 4 / 3;
    box-shadow:
        0 8px 24px rgba(26,14,168,.08),
        0 2px 6px rgba(0,0,0,.04);
    cursor: zoom-in;
    transition: transform .5s var(--pf-ease), box-shadow .5s var(--pf-ease);
    background: transparent;
    /* Animación de entrada */
    animation: pf-fadeup .8s var(--pf-ease) both;
    opacity: 0;
    display: block;
    width: 100%;
    -webkit-tap-highlight-color: transparent;
}
.cb-portafolio__item:focus-visible {
    outline: 3px solid var(--pf-verde);
    outline-offset: 3px;
}

@keyframes pf-fadeup {
    from { opacity: 0; transform: translateY(28px); }
    to   { opacity: 1; transform: translateY(0); }
}

.cb-portafolio__item:hover {
    transform: translateY(-6px);
    box-shadow:
        0 24px 48px rgba(26,14,168,.18),
        0 8px 16px rgba(0,0,0,.08);
}

/* Imagen */
.cb-portafolio__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .7s var(--pf-ease), filter .5s;
}
.cb-portafolio__item:hover .cb-portafolio__img {
    transform: scale(1.08);
    filter: brightness(.85);
}

/* Overlay */
.cb-portafolio__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(59,45,224,.55) 0%,
        rgba(81,215,40,.35) 100%
    );
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity .4s var(--pf-ease);
    margin: 0;
}
.cb-portafolio__item:hover .cb-portafolio__overlay { opacity: 1; }

/* Botón de zoom */
.cb-portafolio__zoom {
    width: 64px; height: 64px;
    border-radius: 50%;
    background: #fff;
    color: var(--pf-morado);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(.6);
    transition: transform .4s var(--pf-ease);
    box-shadow: 0 10px 30px rgba(0,0,0,.3);
}
.cb-portafolio__item:hover .cb-portafolio__zoom { transform: scale(1); }
.cb-portafolio__zoom svg { width: 26px; height: 26px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .cb-portafolio__grid--3 { gap: 18px; }
    .cb-portafolio__grid--4 { gap: 18px; }
}

@media (max-width: 767px) {
    .cb-portafolio { padding: 56px 18px; }
    .cb-portafolio__head { margin-bottom: 36px; }
    .cb-portafolio__grid--3,
    .cb-portafolio__grid--4 {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* ============================================================
   LIGHTBOX  —  <dialog> HTML5 nativo
   ============================================================ */

/* Reset del <dialog> */
.cb-portafolio__lightbox {
    border: none;
    padding: 0;
    background: transparent;
    max-width: 100vw;
    max-height: 100vh;
    width: 100vw;
    height: 100vh;
    margin: 0;
    color: #fff;
}

.cb-portafolio__lightbox[open] {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 80px;
    box-sizing: border-box;
    animation: pf-lb-fadein .3s var(--pf-ease);
}

/* Backdrop oscuro con blur */
.cb-portafolio__lightbox::backdrop {
    background: rgba(6,9,39,.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    animation: pf-lb-fadein .3s var(--pf-ease);
}

@keyframes pf-lb-fadein {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* Imagen grande */
.cb-portafolio__lightbox-img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 24px 80px rgba(0,0,0,.6);
    object-fit: contain;
    animation: pf-lb-zoom .4s var(--pf-ease);
}

@keyframes pf-lb-zoom {
    from { opacity: 0; transform: scale(.92); }
    to   { opacity: 1; transform: scale(1); }
}

/* Botón cerrar (esquina superior derecha) */
.cb-portafolio__lightbox-close,
.cb-portafolio__lightbox-prev,
.cb-portafolio__lightbox-next {
    position: absolute;
    background: rgba(255,255,255,.12);
    color: #fff;
    border: 1px solid rgba(255,255,255,.18);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .25s, transform .25s, border-color .25s;
    -webkit-tap-highlight-color: transparent;
    padding: 0;
}
.cb-portafolio__lightbox-close svg,
.cb-portafolio__lightbox-prev svg,
.cb-portafolio__lightbox-next svg { width: 24px; height: 24px; }

.cb-portafolio__lightbox-close:hover,
.cb-portafolio__lightbox-prev:hover,
.cb-portafolio__lightbox-next:hover {
    background: rgba(255,255,255,.25);
    border-color: rgba(255,255,255,.4);
}

.cb-portafolio__lightbox-close {
    top: 22px; right: 22px;
    width: 52px; height: 52px;
    border-radius: 50%;
}
.cb-portafolio__lightbox-close:hover { transform: rotate(90deg); }

/* Flechas anterior / siguiente */
.cb-portafolio__lightbox-prev,
.cb-portafolio__lightbox-next {
    top: 50%;
    transform: translateY(-50%);
    width: 56px; height: 56px;
    border-radius: 50%;
}
.cb-portafolio__lightbox-prev { left: 24px; }
.cb-portafolio__lightbox-next { right: 24px; }
.cb-portafolio__lightbox-prev:hover { transform: translateY(-50%) translateX(-3px); }
.cb-portafolio__lightbox-next:hover { transform: translateY(-50%) translateX(3px); }

/* Contador "1 / 4" */
.cb-portafolio__lightbox-counter {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'Montserrat', sans-serif;
    font-size: .85rem;
    font-weight: 700;
    color: rgba(255,255,255,.85);
    background: rgba(255,255,255,.1);
    padding: 8px 18px;
    border-radius: 50px;
    backdrop-filter: blur(8px);
    letter-spacing: .15em;
    border: 1px solid rgba(255,255,255,.15);
}

/* Responsive lightbox */
@media (max-width: 767px) {
    .cb-portafolio__lightbox[open] { padding: 20px 12px; }
    .cb-portafolio__lightbox-close { top: 14px; right: 14px; width: 44px; height: 44px; }
    .cb-portafolio__lightbox-prev,
    .cb-portafolio__lightbox-next { width: 44px; height: 44px; }
    .cb-portafolio__lightbox-prev { left: 10px; }
    .cb-portafolio__lightbox-next { right: 10px; }
    .cb-portafolio__lightbox-counter { bottom: 14px; font-size: .75rem; padding: 6px 14px; }
}