/* ============================================================
   MS Gates UK — Case Studies Page Stylesheet
   Dependencies: /styles.css (global tokens, btn classes, header, footer)
   Accent: #a8862e (gold)
   ============================================================ */

/* ===== LOCAL TOKENS (fallbacks — jeśli w styles.css masz --accent itd., ten plik przejmie Twoje) ===== */
:root {
    --cs-accent: #a8862e;
    --cs-accent-dark: #8c6f25;
    --cs-ink: #1a1a1a;
    --cs-ink-soft: #4a4a4a;
    --cs-muted: #6b6b6b;
    --cs-line: #e5e5e5;
    --cs-surface: #fafafa;
    --cs-surface-alt: #f4f1ea;
    --cs-white: #ffffff;
    --cs-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --cs-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --cs-shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
    --cs-radius: 8px;
    --cs-radius-lg: 12px;
    --cs-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== SHARED SECTION HEADERS ===== */
.cs-section-head {
    max-width: 720px;
    margin: 0 auto 3rem;
    text-align: center;
}

.cs-section-head h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    line-height: 1.2;
    margin: 0.5rem 0 1rem;
    color: var(--cs-ink);
}

.cs-section-head__lead {
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--cs-ink-soft);
    margin: 0;
}

.cs-eyebrow,
.cs-hero__eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--cs-accent);
    font-weight: 600;
}

/* ===== HERO ===== */
.cs-hero {
    padding: 5rem 0 4rem;
    background: linear-gradient(180deg, var(--cs-surface-alt) 0%, var(--cs-white) 100%);
    text-align: center;
    border-bottom: 1px solid var(--cs-line);
}

.cs-hero__title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.15;
    font-weight: 700;
    margin: 1rem auto 1.5rem;
    max-width: 900px;
    color: var(--cs-ink);
}

.cs-hero__title-accent {
    color: var(--cs-accent);
    font-style: italic;
}

.cs-hero__lead {
    max-width: 720px;
    margin: 0 auto 3rem;
    font-size: 1.15rem;
    line-height: 1.65;
    color: var(--cs-ink-soft);
}

.cs-hero__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 0 0;
    border-top: 1px solid var(--cs-line);
}

.cs-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.cs-stat__num {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--cs-accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.cs-stat__label {
    font-size: 0.85rem;
    color: var(--cs-ink-soft);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    max-width: 180px;
}

@media (max-width: 640px) {
    .cs-hero__stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .cs-stat {
        border-bottom: 1px solid var(--cs-line);
        padding-bottom: 1.5rem;
    }
    .cs-stat:last-child { border-bottom: 0; padding-bottom: 0; }
}

/* ===== FEATURED CASE STUDIES ===== */
.cs-featured {
    padding: 5rem 0;
    background: var(--cs-white);
}

.cs-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.cs-card {
    background: var(--cs-white);
    border: 1px solid var(--cs-line);
    border-radius: var(--cs-radius-lg);
    overflow: hidden;
    box-shadow: var(--cs-shadow-sm);
    transition: transform 0.3s var(--cs-ease), box-shadow 0.3s var(--cs-ease);
    display: flex;
    flex-direction: column;
}

.cs-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--cs-shadow-lg);
}

.cs-card__media-link {
    display: block;
    overflow: hidden;
}

.cs-card__media {
    position: relative;
    margin: 0;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--cs-surface-alt);
}

.cs-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s var(--cs-ease);
}

.cs-card:hover .cs-card__media img {
    transform: scale(1.05);
}

.cs-card__badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--cs-ink);
    color: var(--cs-white);
    padding: 0.4rem 0.85rem;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-radius: 999px;
    box-shadow: var(--cs-shadow-sm);
}

.cs-card__badge--gold {
    background: var(--cs-accent);
}

.cs-card__body {
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.cs-card__location {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--cs-accent);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.cs-card__title {
    font-size: 1.25rem;
    line-height: 1.35;
    margin: 0 0 1rem;
    color: var(--cs-ink);
    font-weight: 600;
}

.cs-card__quote {
    margin: 0 0 1.25rem;
    padding: 0 0 0 1rem;
    border-left: 3px solid var(--cs-accent);
    color: var(--cs-ink-soft);
    font-style: italic;
    font-size: 0.95rem;
    line-height: 1.55;
}

.cs-card__quote p { margin: 0 0 0.75rem; }

.cs-card__author {
    font-size: 0.8rem;
    color: var(--cs-muted);
    font-style: normal;
    font-weight: 500;
}

.cs-card__specs {
    list-style: none;
    padding: 1.25rem 0;
    margin: 0 0 1.25rem;
    border-top: 1px dashed var(--cs-line);
    border-bottom: 1px dashed var(--cs-line);
    display: grid;
    gap: 0.4rem;
    font-size: 0.88rem;
    color: var(--cs-ink-soft);
}

.cs-card__specs strong {
    color: var(--cs-ink);
    font-weight: 600;
    display: inline-block;
    min-width: 95px;
}

.cs-card__cta {
    margin-top: auto;
    align-self: flex-start;
}

/* ===== GALLERY ===== */
.cs-gallery {
    padding: 5rem 0;
    background: var(--cs-surface);
}

.cs-gallery__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

@media (max-width: 900px) { .cs-gallery__grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .cs-gallery__grid { grid-template-columns: repeat(2, 1fr); gap: 0.5rem; } }

.cs-gallery__item {
    margin: 0;
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: var(--cs-radius);
    cursor: zoom-in;
    background: var(--cs-surface-alt);
    box-shadow: var(--cs-shadow-sm);
    transition: transform 0.3s var(--cs-ease), box-shadow 0.3s var(--cs-ease);
}

.cs-gallery__item:hover {
    transform: translateY(-4px);
    box-shadow: var(--cs-shadow-md);
}

.cs-gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s var(--cs-ease);
}

.cs-gallery__item:hover img {
    transform: scale(1.08);
}

.cs-gallery__item::after {
    content: attr(data-caption-display);
    position: absolute;
    inset: auto 0 0 0;
    padding: 0.6rem 0.8rem;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.75) 100%);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s var(--cs-ease), transform 0.3s var(--cs-ease);
    pointer-events: none;
}

.cs-gallery__item:hover::after {
    opacity: 1;
    transform: translateY(0);
}

/* ===== FEATURED VIDEO ===== */
.cs-video {
    padding: 5rem 0;
    background: var(--cs-white);
}

.cs-video__player {
    position: relative;
    max-width: 960px;
    margin: 2rem auto 0;
    aspect-ratio: 16 / 9;
    border-radius: var(--cs-radius-lg);
    overflow: hidden;
    box-shadow: var(--cs-shadow-lg);
    background: #000;
}

.cs-video__player iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* ===== MORE VIDEOS ===== */
.cs-more-videos {
    padding: 5rem 0;
    background: var(--cs-surface);
}

.cs-videos__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0 3rem;
}

.cs-video-card {
    background: var(--cs-white);
    border: 1px solid var(--cs-line);
    border-radius: var(--cs-radius);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--cs-shadow-sm);
    transition: transform 0.3s var(--cs-ease), box-shadow 0.3s var(--cs-ease);
    display: block;
}

.cs-video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--cs-shadow-md);
}

.cs-video-card__thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #000;
}

.cs-video-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: opacity 0.3s var(--cs-ease);
}

.cs-video-card:hover .cs-video-card__thumb img { opacity: 0.75; }

.cs-video-card__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 54px;
    height: 54px;
    background: rgba(0,0,0,0.75);
    color: var(--cs-white);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 1.3rem;
    padding-left: 4px; /* optyczne wycentrowanie trójkąta */
    transition: background 0.3s var(--cs-ease), transform 0.3s var(--cs-ease);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.cs-video-card:hover .cs-video-card__play {
    background: var(--cs-accent);
    transform: translate(-50%, -50%) scale(1.08);
}

.cs-video-card__title {
    padding: 1rem 1.25rem 1.25rem;
    font-size: 0.95rem;
    line-height: 1.4;
    margin: 0;
    font-weight: 600;
    color: var(--cs-ink);
}

.cs-youtube-cta {
    text-align: center;
    margin-top: 2rem;
}

/* ===== FINAL CTA ===== */
.cs-final-cta {
    padding: 5rem 0;
    background: var(--cs-ink);
    color: var(--cs-white);
    text-align: center;
}

.cs-final-cta h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin: 0 0 1rem;
    color: var(--cs-white);
}

.cs-final-cta p {
    max-width: 600px;
    margin: 0 auto 2rem;
    color: rgba(255,255,255,0.8);
    font-size: 1.05rem;
    line-height: 1.6;
}

.cs-final-cta__actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-lg {
    padding: 0.95rem 2rem;
    font-size: 1rem;
}

/* ===== LIGHTBOX ===== */
.cs-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 10, 0.94);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 2rem;
    animation: csLightboxFade 0.25s ease;
}

.cs-lightbox.is-open { display: flex; }

@keyframes csLightboxFade {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.cs-lightbox__figure {
    max-width: 95%;
    max-height: 95%;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.cs-lightbox__img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--cs-radius);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.cs-lightbox__caption {
    color: var(--cs-white);
    font-size: 0.95rem;
    letter-spacing: 0.03em;
    text-align: center;
}

.cs-lightbox__close,
.cs-lightbox__prev,
.cs-lightbox__next {
    position: absolute;
    background: rgba(255,255,255,0.1);
    color: var(--cs-white);
    border: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 1.4rem;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: background 0.2s var(--cs-ease);
    backdrop-filter: blur(8px);
}

.cs-lightbox__close:hover,
.cs-lightbox__prev:hover,
.cs-lightbox__next:hover {
    background: var(--cs-accent);
}

.cs-lightbox__close { top: 1.5rem; right: 1.5rem; font-size: 1.6rem; }
.cs-lightbox__prev  { left: 1.5rem; top: 50%; transform: translateY(-50%); }
.cs-lightbox__next  { right: 1.5rem; top: 50%; transform: translateY(-50%); }

@media (max-width: 640px) {
    .cs-lightbox__prev { left: 0.5rem; width: 40px; height: 40px; }
    .cs-lightbox__next { right: 0.5rem; width: 40px; height: 40px; }
    .cs-lightbox__close { top: 0.75rem; right: 0.75rem; width: 40px; height: 40px; }
}

/* ===== OUTLINE BUTTON (jeśli nie masz jej w /styles.css) ===== */
.btn-outline {
    background: transparent;
    color: var(--cs-ink);
    border: 1.5px solid var(--cs-ink);
    padding: 0.65rem 1.3rem;
    font-weight: 600;
    border-radius: var(--cs-radius);
    text-decoration: none;
    display: inline-block;
    transition: background 0.2s var(--cs-ease), color 0.2s var(--cs-ease);
}

.btn-outline:hover {
    background: var(--cs-ink);
    color: var(--cs-white);
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}
/* ===== Video Modal ===== */
.cs-video-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(0, 0, 0, 0.88);
}
.cs-video-modal.is-open {
    display: flex;
}
.cs-video-modal__frame {
    position: relative;
    width: 100%;
    max-width: 960px;
}
.cs-video-modal__ratio {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 */
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.cs-video-modal__ratio iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}
.cs-video-modal__close {
    position: absolute;
    top: -44px;
    right: 0;
    width: 40px;
    height: 40px;
    font-size: 30px;
    line-height: 1;
    color: #fff;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, opacity 0.2s ease;
}
.cs-video-modal__close:hover {
    transform: scale(1.15);
    opacity: 0.8;
}
@media (max-width: 600px) {
    .cs-video-modal { padding: 16px; }
    .cs-video-modal__close { top: -40px; right: 4px; }
}

/* Make button-based cards behave like the old anchor cards */
button.cs-video-card {
    display: block;
    width: 100%;
    padding: 0;
    text-align: left;
    background: none;
    border: none;
    font: inherit;
    color: inherit;
    cursor: pointer;
}