/* ============================================
   PORTFOLIO — CINEMATIC MOTION LAYER
   Bold entrances, 3D cursor tilt, animated filtering.
   Driven by assets/js/portfolio-cinematic.js, which sets the
   --rx/--ry/--mx/--my/--pty custom properties per card.
   ============================================ */

#portfolio {
    position: relative;
    overflow: hidden;
}

/* Drifting glow behind the grid, so the section is never flat. */
#portfolio::before {
    content: "";
    position: absolute;
    top: 18%;
    left: 50%;
    width: min(1100px, 120vw);
    height: 620px;
    transform: translateX(-50%);
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(circle at 30% 40%, rgba(255, 122, 24, .13), transparent 60%),
        radial-gradient(circle at 72% 60%, rgba(255, 200, 55, .09), transparent 62%);
    filter: blur(18px);
    opacity: .85;
    animation: pfAura 18s ease-in-out infinite alternate;
}

#portfolio .container {
    position: relative;
    z-index: 1;
}

@keyframes pfAura {
    0%   { transform: translateX(-50%) translateY(0) scale(1); }
    50%  { transform: translateX(-52%) translateY(-26px) scale(1.06); }
    100% { transform: translateX(-48%) translateY(14px) scale(1.02); }
}

/* ---------- Filter bar ---------- */

.portfolio-filters {
    position: relative;
    perspective: 800px;
}

/* Sliding pill that tracks the active button. */
.portfolio-filters .pf-indicator {
    position: absolute;
    top: 0;
    left: 0;
    height: 0;
    border-radius: 60px;
    background: linear-gradient(135deg, #FF7A18, #FFC837);
    box-shadow: 0 6px 26px rgba(255, 122, 24, .38);
    transform: translate3d(0, 0, 0);
    transition: transform .55s cubic-bezier(.16, 1, .3, 1),
                width .55s cubic-bezier(.16, 1, .3, 1),
                height .55s cubic-bezier(.16, 1, .3, 1),
                opacity .3s ease;
    opacity: 0;
    pointer-events: none;
    z-index: 0;
}

.portfolio-filters.pf-ready .pf-indicator { opacity: 1; }

.portfolio-filters .filter-btn {
    position: relative;
    z-index: 1;
    overflow: hidden;
    transition: color .35s ease, transform .35s cubic-bezier(.16, 1, .3, 1);
}

/* The JS-driven pill replaces the static active background. */
.portfolio-filters.pf-ready .filter-btn.active,
.portfolio-filters.pf-ready .filter-btn:hover {
    background: transparent;
    box-shadow: none;
    border-color: rgba(255, 255, 255, .08);
}

.portfolio-filters.pf-ready .filter-btn.active { color: #0B0B0F; }
.portfolio-filters.pf-ready .filter-btn:hover:not(.active) { color: #fff; transform: translateY(-2px); }

.portfolio-filters .filter-btn.pf-press { transform: scale(.94); }

/* Count badge that ticks up as categories change. */
.filter-btn .pf-count {
    display: inline-block;
    margin-left: 7px;
    font-size: 11px;
    font-variant-numeric: tabular-nums;
    opacity: .55;
    transform: translateY(-1px);
}

/* ---------- Grid + card shell ---------- */

.portfolio-grid {
    perspective: 1600px;
    perspective-origin: 50% 40%;
}

.portfolio-item {
    position: relative;
    transform-style: preserve-3d;
    will-change: transform, opacity;
    /* Entrance state — cleared by .pf-shown. */
    opacity: 0;
    transform: translate3d(0, 70px, -120px) rotateX(14deg) scale(.92);
    filter: blur(7px);
    transition:
        opacity .85s cubic-bezier(.16, 1, .3, 1),
        transform .95s cubic-bezier(.16, 1, .3, 1),
        filter .85s ease;
    transition-delay: var(--pf-delay, 0ms);
}

.portfolio-item.pf-shown {
    opacity: 1;
    filter: blur(0);
    transform:
        translate3d(0, 0, 0)
        rotateX(var(--rx, 0deg))
        rotateY(var(--ry, 0deg))
        scale(var(--pf-scale, 1));
}

/* Cursor tilt only kicks in once the card has landed. */
.portfolio-item.pf-shown.pf-live {
    transition:
        transform .18s ease-out,
        box-shadow .4s ease,
        opacity .4s ease;
}

.portfolio-item.pf-shown:hover {
    --pf-scale: 1.035;
    box-shadow:
        0 26px 70px rgba(0, 0, 0, .62),
        0 0 0 1px rgba(255, 122, 24, .38),
        0 0 46px rgba(255, 122, 24, .18);
}

/* Specular sheen that follows the pointer across the card. */
.portfolio-item::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 16px;
    pointer-events: none;
    z-index: 3;
    opacity: 0;
    transition: opacity .35s ease;
    background: radial-gradient(
        520px circle at var(--mx, 50%) var(--my, 50%),
        rgba(255, 200, 55, .16),
        rgba(255, 122, 24, .07) 38%,
        transparent 62%
    );
}

.portfolio-item:hover::after { opacity: 1; }

/* Diagonal light sweep on enter. */
.portfolio-thumb::after {
    content: "";
    position: absolute;
    top: 0;
    left: -70%;
    width: 45%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
    transform: skewX(-18deg);
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, .16),
        rgba(255, 200, 55, .10),
        transparent
    );
}

.portfolio-item:hover .portfolio-thumb::after { animation: pfSweep .9s ease forwards; }

@keyframes pfSweep {
    from { left: -70%; }
    to   { left: 130%; }
}

/* ---------- Thumbnail ---------- */

.portfolio-thumb {
    transform: translateZ(24px);
}

.portfolio-thumb img {
    /* Slight scroll-linked drift, set by JS via --pty. */
    transform: scale(1.08) translate3d(0, var(--pty, 0px), 0);
    transition: transform .7s cubic-bezier(.16, 1, .3, 1), filter .5s ease;
    filter: saturate(.92) contrast(1.02);
}

.portfolio-item:hover .portfolio-thumb img {
    transform: scale(1.16) translate3d(0, var(--pty, 0px), 0);
    filter: saturate(1.12) contrast(1.06);
}

/* ---------- Overlay + play button ---------- */

.portfolio-overlay {
    background: linear-gradient(
        180deg,
        rgba(11, 11, 15, .30),
        rgba(11, 11, 15, .78)
    );
    opacity: 1;
    transform: translateZ(40px);
    /* Wipes up from the bottom edge instead of a plain fade. */
    clip-path: inset(100% 0 0 0);
    transition: clip-path .55s cubic-bezier(.16, 1, .3, 1);
}

.portfolio-item:hover .portfolio-overlay { clip-path: inset(0 0 0 0); }

.play-btn {
    position: relative;
    transform: scale(.6) rotate(-25deg);
    opacity: 0;
    transition:
        transform .5s cubic-bezier(.34, 1.56, .64, 1) .08s,
        opacity .4s ease .08s,
        box-shadow .3s ease;
    background: linear-gradient(135deg, #FF7A18, #FFC837);
    color: #0B0B0F;
}

.portfolio-item:hover .play-btn {
    transform: scale(1) rotate(0deg);
    opacity: 1;
}

/* Expanding halo rings behind the play button. */
.play-btn::before,
.play-btn::after {
    content: "";
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 1px solid rgba(255, 200, 55, .55);
    opacity: 0;
    pointer-events: none;
}

.portfolio-item:hover .play-btn::before { animation: pfRing 2s ease-out infinite; }
.portfolio-item:hover .play-btn::after  { animation: pfRing 2s ease-out .9s infinite; }

@keyframes pfRing {
    0%   { transform: scale(.85); opacity: .75; }
    70%  { opacity: .12; }
    100% { transform: scale(1.75); opacity: 0; }
}

.play-btn:active { transform: scale(.9); }

/* Click ripple, injected by JS. */
.pf-ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, .55);
    transform: translate(-50%, -50%) scale(0);
    pointer-events: none;
    animation: pfRipple .65s ease-out forwards;
    z-index: 5;
}

@keyframes pfRipple {
    to { transform: translate(-50%, -50%) scale(14); opacity: 0; }
}

/* ---------- Caption ---------- */

.portfolio-item h4 {
    position: relative;
    z-index: 2;
    transform: translateZ(18px);
    overflow: hidden;
}

.portfolio-item h4 .pf-title-inner {
    display: block;
    transition: transform .5s cubic-bezier(.16, 1, .3, 1), color .4s ease;
}

.portfolio-item:hover h4 .pf-title-inner {
    transform: translateY(-2px);
    color: #FFC837;
}

/* Accent rule that draws in under the caption. */
.portfolio-item h4::after {
    content: "";
    position: absolute;
    left: 20px;
    bottom: 8px;
    height: 2px;
    width: 0;
    border-radius: 2px;
    background: linear-gradient(90deg, #FF7A18, #FFC837);
    transition: width .5s cubic-bezier(.16, 1, .3, 1);
}

.portfolio-item:hover h4::after { width: 42px; }

/* Category tag revealed on hover. */
.portfolio-item .pf-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 4;
    padding: 5px 12px;
    border-radius: 40px;
    font-family: 'Inter', sans-serif;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: #0B0B0F;
    background: linear-gradient(135deg, #FF7A18, #FFC837);
    transform: translate3d(0, -14px, 50px);
    opacity: 0;
    transition: transform .45s cubic-bezier(.34, 1.56, .64, 1), opacity .35s ease;
}

.portfolio-item:hover .pf-tag {
    transform: translate3d(0, 0, 50px);
    opacity: 1;
}

/* ---------- Filter transitions (FLIP) ---------- */

.portfolio-item.pf-moving {
    transition: transform .6s cubic-bezier(.16, 1, .3, 1), opacity .4s ease;
    z-index: 2;
}

.portfolio-item.pf-exit {
    animation: pfExit .42s cubic-bezier(.55, 0, .68, .2) forwards;
    pointer-events: none;
}

@keyframes pfExit {
    to {
        opacity: 0;
        transform: translate3d(0, 26px, -160px) rotateX(-16deg) scale(.86);
        filter: blur(8px);
    }
}

.portfolio-item.pf-enter {
    animation: pfEnter .68s cubic-bezier(.16, 1, .3, 1) both;
    animation-delay: var(--pf-delay, 0ms);
}

@keyframes pfEnter {
    from {
        opacity: 0;
        transform: translate3d(0, 44px, -140px) rotateX(16deg) scale(.9);
        filter: blur(7px);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0) rotateX(0) scale(1);
        filter: blur(0);
    }
}

/* ---------- Modal open transition ---------- */

.video-modal .video-modal-content {
    transform-origin: var(--pf-origin-x, 50%) var(--pf-origin-y, 50%);
}

.video-modal.active .video-modal-content {
    animation: pfModalIn .6s cubic-bezier(.16, 1, .3, 1) both;
}

@keyframes pfModalIn {
    from { opacity: 0; transform: scale(.55) translateY(40px); filter: blur(10px); }
    to   { opacity: 1; transform: scale(1) translateY(0); filter: blur(0); }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
    #portfolio::before { animation: none; }

    .portfolio-item,
    .portfolio-item.pf-shown,
    .portfolio-item.pf-shown.pf-live {
        opacity: 1;
        filter: none;
        transform: none;
        transition: opacity .2s ease;
    }

    .portfolio-item.pf-enter,
    .portfolio-item.pf-exit,
    .portfolio-item.pf-moving,
    .video-modal.active .video-modal-content {
        animation: none;
        transition: none;
    }

    .portfolio-thumb img,
    .portfolio-item:hover .portfolio-thumb img { transform: none; }

    .portfolio-overlay { clip-path: none; opacity: 0; transition: opacity .2s ease; }
    .portfolio-item:hover .portfolio-overlay { opacity: 1; }

    .play-btn { opacity: 1; transform: none; }
    .portfolio-item:hover .play-btn::before,
    .portfolio-item:hover .play-btn::after { animation: none; }
    .portfolio-item:hover .portfolio-thumb::after { animation: none; }
    .pf-tag { opacity: 1; transform: none; }
}

/* ---------- Touch: no hover, so show the essentials ---------- */

@media (hover: none) {
    .portfolio-overlay { clip-path: inset(70% 0 0 0); }
    .play-btn { opacity: 1; transform: scale(.85); }
    .portfolio-item .pf-tag { opacity: 1; transform: translate3d(0, 0, 50px); }
}