/* === Portfolio Page Base === */
.portfolio-page {
    position: relative;
}

/* Intro */
.portfolio-intro {
    padding: 80px 0 40px;
}
.portfolio-intro__inner {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1.3fr);
    gap: 60px;
}
.portfolio-intro__paragraph {
    margin-top: 16px;
    line-height: 1.7;
}
.portfolio-intro__sidebar {
    border-left: 1px solid rgba(255, 255, 255, 0.06);
    padding-left: 30px;
}
.portfolio-intro__subtitle {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.85;
}
.portfolio-intro__list {
    margin: 16px 0 10px;
    padding-left: 18px;
}
.portfolio-intro__list li {
    margin-bottom: 8px;
}
.portfolio-intro__note {
    margin-top: 6px;
    font-size: 0.9rem;
    opacity: 0.85;
}

/* === 3D Hologram Carousel === */
.portfolio-carousel-section {
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}
.portfolio-carousel__header {
    max-width: 900px;
}
.portfolio-carousel__text {
    margin-top: 14px;
    line-height: 1.7;
}
.portfolio-carousel__outer {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.portfolio-carousel__ring {
    position: relative;
    width: 520px;
    height: 520px;
    transform-style: preserve-3d;
    perspective: 1400px;
    pointer-events: none;
}
.portfolio-carousel__item {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 190px;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: radial-gradient(circle at top left,
        rgba(91, 180, 80, 0.18),
        rgba(0, 0, 0, 0.92)
    );
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.55);
    color: #fff;
    transform-style: preserve-3d;
    transform-origin: center center;
    cursor: pointer;
    pointer-events: auto;
    text-align: left;
    opacity: 0.85;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition:
        box-shadow 0.25s ease,
        border-color 0.25s ease,
        opacity 0.25s ease,
        transform 0.25s ease;
}
.portfolio-carousel__item:hover,
.portfolio-carousel__item--active {
    opacity: 1;
    border-color: #5BB450;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.75);
    transform: translate3d(-50%, -50%, 10px) scale(1.04);
}
.portfolio-carousel__label {
    display: block;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.9;
}
.portfolio-carousel__domain {
    display: block;
    margin-top: 4px;
    font-size: 0.9rem;
    opacity: 0.85;
}
.portfolio-carousel__hint {
    margin-top: 22px;
    font-size: 0.9rem;
    opacity: 0.75;
}

/* === Filters === */
.portfolio-filters {
    padding: 40px 0 20px;
}
.portfolio-filters__header {
    max-width: 900px;
}
.portfolio-filters__title {
    margin-bottom: 8px;
}
.portfolio-filters__text {
    margin-bottom: 20px;
    line-height: 1.6;
}
.portfolio-filters__list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
}
.portfolio-filters__item {
    cursor: pointer;
    font-size: 0.95rem;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    opacity: 0.7;
    transition: all 0.25s ease;
}
.portfolio-filters__item span {
    white-space: nowrap;
}
.portfolio-filters__item:hover {
    opacity: 1;
    border-color: rgba(91, 180, 80, 0.7);
}
.portfolio-filters__item.is-active {
    opacity: 1;
    background: rgba(91, 180, 80, 0.12);
    border-color: #5BB450;
}

/* === Grid === */
.portfolio-grid-section {
    padding: 30px 0 60px;
}
.portfolio-grid__intro {
    max-width: 900px;
    margin-bottom: 30px;
}
.portfolio-grid__paragraph {
    margin-top: 14px;
    line-height: 1.7;
}
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 26px;
}
.portfolio-card {
    display: flex;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.78);
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease,
        border-color 0.25s ease,
        background 0.25s ease;
}
.portfolio-card__link {
    display: block;
}
.portfolio-card__thumb img {
    display: block;
    width: 100%;
    height: auto;
}
.portfolio-card__content {
    padding: 18px 18px 20px;
}
.portfolio-card__kicker {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.8;
}
.portfolio-card__title {
    margin-top: 6px;
    font-size: 1.1rem;
}
.portfolio-card__meta {
    margin-top: 4px;
    font-size: 0.9rem;
    opacity: 0.85;
}
.portfolio-card__description {
    margin-top: 10px;
    font-size: 0.95rem;
    line-height: 1.7;
}
.portfolio-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.6);
    border-color: rgba(91, 180, 80, 0.7);
    background: rgba(6, 12, 6, 0.95);
}
.js-portfolio-item.is-hidden {
    display: none !important;
}

/* === Why-Section === */
.portfolio-why {
    padding: 60px 0 80px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.portfolio-why__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1.2fr);
    gap: 40px;
}
.portfolio-why__paragraph {
    margin-top: 12px;
    line-height: 1.7;
}
.portfolio-why__list {
    padding-left: 18px;
    margin-top: 10px;
}
.portfolio-why__list li {
    margin-bottom: 6px;
}

/* CTA */
.cta-section--portfolio {
    padding: 60px 0 80px;
}

/* === Responsive === */
@media (max-width: 1100px) {
    .portfolio-intro__inner,
    .portfolio-why__inner {
        grid-template-columns: 1fr;
    }
    .portfolio-intro__sidebar {
        border-left: none;
        padding-left: 0;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding-top: 24px;
    }
}

@media (max-width: 960px) {
    .portfolio-carousel__ring {
        width: 420px;
        height: 420px;
    }
}

@media (max-width: 640px) {
    .portfolio-carousel__ring {
        width: 320px;
        height: 320px;
    }
    .portfolio-carousel__item {
        width: 170px;
        padding: 10px 12px;
    }
    .portfolio-grid__intro {
        margin-bottom: 24px;
    }
    .portfolio-card__content {
        padding: 14px 14px 16px;
    }
    .portfolio-filters__list {
        gap: 8px;
    }
}