/* ========================================
   CENTER-FOCUSED CAROUSEL (Option B)
   Presentation carousel with one dominant center card,
   partial side cards, gradient fade masks.
   Uses site design tokens from cinematic_styles.css.
   ======================================== */

/* ----------------------------------------
   Carousel Wrapper
   ---------------------------------------- */
#portfolio-carousel {
    position: relative;
    width: 100%;
    max-width: var(--content-wide);
    margin-inline: auto;
    padding-block: var(--space-4);
}

/* ----------------------------------------
   Viewport (scrollable, masked container)
   ---------------------------------------- */
.carousel-viewport {
    position: relative;
    overflow: hidden;
}

/* Gradient fade masks on left and right */
.carousel-viewport::before,
.carousel-viewport::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 80px;
    z-index: 3;
    pointer-events: none;
}

.carousel-viewport::before {
    left: 0;
    background: linear-gradient(to right, var(--color-bg-primary) 0%, transparent 100%);
}

.carousel-viewport::after {
    right: 0;
    background: linear-gradient(to left, var(--color-bg-primary) 0%, transparent 100%);
}

/* ----------------------------------------
   Track (scroll-snap container)
   ---------------------------------------- */
.carousel-track {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    /* Padding so center card is truly centered at first and last positions */
    padding-inline: calc((100% - 62%) / 2);
    gap: 2%;
}

.carousel-track::-webkit-scrollbar {
    display: none;
}

/* ----------------------------------------
   Individual Slides
   ---------------------------------------- */
.carousel-slide {
    flex: 0 0 62%;
    scroll-snap-align: center;
    position: relative;
    transition: transform 0.25s ease, opacity 0.25s ease;
    transform: scale(0.9);
    opacity: 0.6;
    z-index: 1;
}

/* Active (center) slide */
.carousel-slide.is-active {
    transform: scale(1);
    opacity: 1;
    z-index: 2;
}

.carousel-slide.is-active .carousel-card {
    cursor: pointer;
}

/* ----------------------------------------
   Card (link wrapper for each project)
   ---------------------------------------- */
.carousel-card {
    display: block;
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    background: var(--color-bg-secondary);
    box-shadow: none;
}

.carousel-card:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
}

/* Card image */
.carousel-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    -webkit-user-drag: none;
    pointer-events: none;
}

/* Dark overlay on side cards */
.carousel-slide:not(.is-active) .carousel-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(9, 9, 11, 0.35);
    border-radius: var(--radius-lg);
    pointer-events: none;
}


/* ----------------------------------------
   Title Overlay (bottom-left on active card)
   ---------------------------------------- */
.carousel-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-6) var(--space-6) var(--space-5);
    background: linear-gradient(to top, rgba(9, 9, 11, 0.8) 0%, transparent 100%);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
}

.carousel-slide.is-active .carousel-card-overlay {
    opacity: 1;
    transform: translateY(0);
}

.carousel-card-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-primary);
    margin: 0 0 var(--space-2) 0;
}

/* Tag list inside carousel overlay */
.carousel-card-tags {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
}

/* Tag color variants for carousel */
.tag--stylized {
    background: rgba(68, 216, 138, 0.13);
    color: #44D88A;
}
.tag--character {
    background: rgba(163, 166, 191, 0.13);
    color: #A3A6BF;
}
.tag--realtime {
    background: rgba(68, 216, 138, 0.08);
    color: #38BF78;
}
.tag--realistic {
    background: rgba(237, 237, 240, 0.13);
    color: #EDEDF0;
}
.tag--bust {
    background: rgba(107, 111, 133, 0.13);
    color: #6B6F85;
}
.tag--study {
    background: rgba(224, 82, 82, 0.13);
    color: #E05252;
}

/* Suppress title on side cards */
.carousel-slide:not(.is-active) .carousel-card-overlay {
    display: none;
}


/* ----------------------------------------
   ARIA Live Region (hidden)
   ---------------------------------------- */
.carousel-live {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}


/* ----------------------------------------
   Reduced Motion
   ---------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    .carousel-slide,
    .carousel-card,
    .carousel-card-overlay {
        transition-duration: 0.01ms !important;
    }
}

/* ----------------------------------------
   Responsive
   ---------------------------------------- */

/* Mobile: slightly wider center card */
@media (max-width: 767px) {
    .carousel-track {
        padding-inline: calc((100% - 75%) / 2);
        gap: 3%;
    }

    .carousel-slide {
        flex: 0 0 75%;
    }

    .carousel-card-title {
        font-size: var(--text-base);
    }

    .carousel-card-tags .tag {
        font-size: 10px;
        padding: 2px var(--space-2);
    }

    .carousel-viewport::before,
    .carousel-viewport::after {
        width: 40px;
    }
}

/* Tablet */
@media (min-width: 768px) and (max-width: 1023px) {
    .carousel-track {
        padding-inline: calc((100% - 60%) / 2);
    }

    .carousel-slide {
        flex: 0 0 60%;
    }
}

/* Large screens */
@media (min-width: 1440px) {
    .carousel-viewport::before,
    .carousel-viewport::after {
        width: 120px;
    }
}