/* ==========================================================================
   Synkyn Studios — Showcase / Brand Collaboration Section
   ========================================================================== */

#research-sponsors {
    /* Mobile View Defaults (<640px) */
    --logo-size: clamp(66px, 17.5vw, 78px);
    --logo-gap: clamp(16px, 4.2vw, 22px);
    --logo-border: 1px;
    --logo-radius: 10px;
    --fade-width: clamp(1.1rem, 6vw, 1.85rem);
    --mask-stop: 5%;
    position: relative;
    overflow: hidden;
    background: transparent;
    padding-top: clamp(36px, 5vh, 56px);
    padding-bottom: clamp(42px, 6vh, 68px);
}

@media (min-width: 640px) {
    #research-sponsors {
        /* Tablet View (640px - 1023px) */
        --logo-size: clamp(82px, 9.5vw, 96px);
        --logo-gap: clamp(20px, 2.5vw, 28px);
        --logo-border: 1.1px;
        --logo-radius: 12px;
        --fade-width: clamp(3.5rem, 8vw, 6rem);
        --mask-stop: 9%;
        padding-top: clamp(48px, 6vh, 72px);
        padding-bottom: clamp(56px, 7vh, 84px);
    }
}

@media (min-width: 1024px) {
    #research-sponsors {
        /* Desktop View (>= 1024px) — Expanded Black Shadow Fade, Refined Size, Generous Gap */
        --logo-size: clamp(96px, 7.5vw, 116px);
        --logo-gap: clamp(28px, 2.6vw, 40px);
        --logo-border: 1.2px;
        --logo-radius: 14px;
        --fade-width: clamp(6rem, 14vw, 13rem);
        --mask-stop: 14%;
        padding-top: clamp(60px, 7vh, 88px);
        padding-bottom: clamp(70px, 8vh, 104px);
    }
}

/* Subtle ambient gold glow in the center background */
#research-sponsors::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: clamp(280px, 50vw, 800px);
    height: clamp(180px, 30vw, 400px);
    background: radial-gradient(ellipse at center, rgba(242, 212, 0, 0.045) 0%, rgba(242, 212, 0, 0.01) 45%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* Section Header Typography */
.showcase-header {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 820px;
    margin: 0 auto clamp(1.75rem, 3.5vw, 3.25rem);
    padding: 0 1.25rem;
}

.showcase-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 13px;
    border-radius: 9999px;
    background: rgba(242, 212, 0, 0.08);
    border: 1px solid rgba(242, 212, 0, 0.24);
    color: #ffd77e;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    box-shadow: 0 0 16px rgba(242, 212, 0, 0.12);
}

.showcase-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 9999px;
    background: #f2d400;
    box-shadow: 0 0 8px #f2d400;
    animation: showcase-dot-pulse 2s ease-in-out infinite;
}

@keyframes showcase-dot-pulse {
    0%, 100% { opacity: 0.45; transform: scale(0.9); }
    50% { opacity: 1; transform: scale(1.15); }
}

.showcase-title {
    font-family: "Inter Tight", system-ui, sans-serif;
    font-weight: 700;
    font-size: clamp(1.5rem, 3.5vw, 2.75rem);
    line-height: 1.15;
    letter-spacing: -0.025em;
    color: #ffffff;
    margin-top: 12px;
}

.showcase-title-gold {
    background: linear-gradient(105deg, #ffe08a 0%, #f2d400 45%, #eab308 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.showcase-subtitle {
    font-size: clamp(0.85rem, 1.3vw, 1rem);
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.65);
    margin-top: 8px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

/* Category Dividers & Labels */
.showcase-category-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: clamp(0.85rem, 1.8vw, 1.35rem);
    padding: 0 1.25rem;
}

.showcase-category-label::before,
.showcase-category-label::after {
    content: "";
    flex: 1;
    max-width: 120px;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.12), transparent);
}

.showcase-category-tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 9999px;
    padding: 4px 12px;
    transition: border-color 0.3s ease, color 0.3s ease;
}

#research-sponsors .logo-carousel-row:hover + .showcase-category-label .showcase-category-tag,
.showcase-category-label:hover .showcase-category-tag {
    border-color: rgba(242, 212, 0, 0.3);
    color: #ffd77e;
}

/* Carousel Tracks & Rows */
#research-sponsors .logo-carousel-row {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding: 6px 0;
}

#research-sponsors .logo-carousel-track-wrap {
    width: 100%;
    min-width: 0;
    position: relative;
    overflow: hidden;
    mask-image: linear-gradient(to right, transparent 0%, black var(--mask-stop, 8%), black calc(100% - var(--mask-stop, 8%)), transparent 100%);
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black var(--mask-stop, 8%), black calc(100% - var(--mask-stop, 8%)), transparent 100%);
}

#research-sponsors .logo-carousel-track {
    display: flex;
    flex-flow: row nowrap;
    align-items: center;
    gap: 0;
    width: max-content;
    will-change: transform;
    transform: translate3d(0, 0, 0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    perspective: 1000px;
}

#research-sponsors .logo-carousel-row:hover .logo-carousel-track,
#research-sponsors .logo-carousel-row:focus-within .logo-carousel-track {
    animation-play-state: running !important;
}

/* Mathematically Seamless 100% Perfect Loop Keyframes */
#research-sponsors .logo-carousel-row--left .logo-carousel-track {
    animation: synkyn-carousel-left 42s linear infinite !important;
}

#research-sponsors .logo-carousel-row--right .logo-carousel-track {
    animation: synkyn-carousel-right 52s linear infinite !important;
}

@keyframes synkyn-carousel-left {
    0% {
        transform: translate3d(0, 0, 0);
    }
    100% {
        transform: translate3d(-50%, 0, 0);
    }
}

@keyframes synkyn-carousel-right {
    0% {
        transform: translate3d(-50%, 0, 0);
    }
    100% {
        transform: translate3d(0, 0, 0);
    }
}

/* Full Square Image Cards with Refined Subtle Yellow Tint Border & Glassmorphism */
#research-sponsors .logo-carousel-item {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--logo-size);
    height: var(--logo-size);
    margin-right: var(--logo-gap);
    aspect-ratio: 1 / 1;
    padding: 0 !important;
    border: var(--logo-border) solid rgba(242, 212, 0, 0.18);
    border-radius: var(--logo-radius);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    background: rgba(10, 10, 12, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.55),
                0 0 8px rgba(242, 212, 0, 0.05),
                inset 0 0 8px rgba(242, 212, 0, 0.03);
    transition: border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform: none !important;
    touch-action: pan-y;
}

/* Transparent Glassmorphism Subtle Gold Overlay on the image */
#research-sponsors .logo-carousel-item::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(242, 212, 0, 0.03) 0%, rgba(255, 255, 255, 0.02) 50%, rgba(242, 212, 0, 0.02) 100%);
    pointer-events: none;
    transition: background 0.45s ease;
    z-index: 1;
}

/* Card Hover State — Grounded (no vertical jump/lift), soft delicate luminous yellow outline */
#research-sponsors .logo-carousel-item:hover {
    transform: none !important;
    border-color: rgba(242, 212, 0, 0.46);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.7),
                0 0 14px rgba(242, 212, 0, 0.14),
                inset 0 0 10px rgba(242, 212, 0, 0.05);
}

#research-sponsors .logo-carousel-item:hover::after {
    background: linear-gradient(135deg, rgba(242, 212, 0, 0.08) 0%, rgba(255, 255, 255, 0.03) 50%, rgba(242, 212, 0, 0.05) 100%);
}

/* The Image Fills 100% Edge-to-Edge with Zero Inset / No Letterboxing */
#research-sponsors .logo-carousel-item-img {
    width: 100% !important;
    height: 100% !important;
    max-width: 100% !important;
    max-height: 100% !important;
    object-fit: cover !important;
    display: block !important;
    border-radius: inherit;
    transform: scale(1) translateZ(0);
    transition: transform 0.55s cubic-bezier(0.16, 1, 0.3, 1),
                filter 0.55s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform, filter;
    pointer-events: none;
}

/* Perfectly zoom the image inside the frame on card hover */
#research-sponsors .logo-carousel-item:hover .logo-carousel-item-img {
    transform: scale(1.15) translateZ(0);
    filter: brightness(1.08) contrast(1.04);
}

/* Edge Fade Gradients — Expansive on desktop, sleek & thin on mobile */
#research-sponsors .logo-carousel-fade {
    pointer-events: none;
    z-index: 2;
    width: var(--fade-width);
    position: absolute;
    top: 0;
    bottom: 0;
}

#research-sponsors .logo-carousel-fade--left {
    left: 0;
    background: linear-gradient(to right, #080808 0%, rgba(8, 8, 8, 0.94) 25%, rgba(8, 8, 8, 0.62) 60%, transparent 100%);
}

#research-sponsors .logo-carousel-fade--right {
    right: 0;
    background: linear-gradient(to left, #080808 0%, rgba(8, 8, 8, 0.94) 25%, rgba(8, 8, 8, 0.62) 60%, transparent 100%);
}

/* Dedicated Mobile View Refinements */
@media (max-width: 639px) {
    .showcase-header {
        margin-bottom: 1.5rem;
        padding: 0 1rem;
    }

    .showcase-title {
        font-size: clamp(1.4rem, 5.8vw, 1.85rem);
        margin-top: 10px;
    }

    .showcase-subtitle {
        font-size: 0.82rem;
        line-height: 1.45;
        margin-top: 6px;
    }

    .showcase-category-label {
        gap: 10px;
        margin-bottom: 0.75rem;
    }

    .showcase-category-label::before,
    .showcase-category-label::after {
        max-width: 50px;
    }

    .showcase-category-tag {
        font-size: 10px;
        letter-spacing: 0.14em;
        padding: 3px 10px;
    }

    #research-sponsors .logo-carousel-row {
        padding: 3px 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    #research-sponsors .logo-carousel-row--left .logo-carousel-track,
    #research-sponsors .logo-carousel-row--right .logo-carousel-track {
        animation: none !important;
    }
}