/* ============================================================
   prism-case-study.css — PRISM case study visual upgrades
   ============================================================ */

/* ── HERO VISUAL ─────────────────────────────────────── */
.prism-hero-visual {
    width: 100%;
    max-height: 540px;
    overflow: hidden;
    background: #000;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
}
.prism-hero-visual__img {
    width: 100%;
    height: 100%;
    max-height: 540px;
    object-fit: cover;
    object-position: center;
    display: block;
    opacity: 0.9;
}

/* ── WORK BLOCKS (client work sections) ─────────────── */
.prism-work-block {
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--border);
}
.prism-work-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
}
.prism-work-block__client {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--text-muted);
    letter-spacing: 0.16em;
    text-transform: uppercase;
    margin-bottom: 4px;
}
.prism-work-block__title {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 10px;
}

/* Work block media grids */
.prism-work-block__media {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}
.prism-work-block__media--mix {
    grid-template-columns: repeat(2, 1fr);
}
.prism-work-block__media--3col {
    grid-template-columns: repeat(3, 1fr);
}
/* GHO: two 1×1 logos side by side — compound selector beats base grid */
.prism-work-block__media.prism-work-block__media--gho {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 12px;
    align-items: flex-start;
}
.prism-work-block__media--gho > .prism-work-block__img--sq {
    width: clamp(180px, 22vw, 300px);
    flex-shrink: 0;
}

/* Base image / iframe sizing for all work blocks */
.prism-work-block__img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    border: 1px solid var(--border);
    object-fit: cover;
    background: var(--bg-card);
    aspect-ratio: 16 / 9;
}
.prism-work-block__img--wide {
    grid-column: 1 / -1;
}
.prism-work-block__img--sq {
    aspect-ratio: 1 / 1;
}

/* ── BOOK OPENER BUTTON ──────────────────────────────── */
.prism-book-open {
    background: none;
    border: 1px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    max-width: 680px;
    width: 100%;
    margin-top: 24px;
    transition: border-color 0.2s, box-shadow 0.2s;
    position: relative;
}
.prism-book-open:hover {
    border-color: var(--border-strong);
    box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}
.prism-book-open__preview {
    width: 100%;
    height: 320px;
    object-fit: cover;
    object-position: center top;
    display: block;
    opacity: 0.7;
    transition: opacity 0.3s;
}
.prism-book-open:hover .prism-book-open__preview { opacity: 0.9; }
.prism-book-open__label {
    display: block;
    padding: 14px 20px;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    text-align: center;
    border-top: 1px solid var(--border);
    background: rgba(255,255,255,0.02);
    transition: color 0.2s;
}
.prism-book-open:hover .prism-book-open__label { color: var(--text-primary); }

/* ── BOOK READER MODAL ───────────────────────────────── */
.prism-reader {
    position: fixed;
    inset: 0;
    z-index: 9100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.prism-reader.is-open {
    opacity: 1;
    visibility: visible;
}
.prism-reader__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.prism-reader__shell {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    max-width: 960px;
    width: 100%;
    max-height: 90vh;
}
.prism-reader__topbar {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
    padding: 0 4px;
}
.prism-reader__close {
    background: none;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: rgba(255,255,255,0.5);
    font-size: 1rem;
    line-height: 1;
    flex-shrink: 0;
    transition: border-color 0.2s, color 0.2s;
}
.prism-reader__close:hover { border-color: #fff; color: #fff; }
.prism-reader__counter {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: rgba(255,255,255,0.4);
    letter-spacing: 0.12em;
}
.prism-reader__title {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: rgba(255,255,255,0.25);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-left: auto;
}
.prism-reader__stage {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
    flex: 1;
}
.prism-reader__nav {
    background: none;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: rgba(255,255,255,0.5);
    flex-shrink: 0;
    transition: border-color 0.2s, color 0.2s, opacity 0.2s;
}
.prism-reader__nav:hover { border-color: rgba(255,255,255,0.5); color: #fff; }
.prism-reader__nav:disabled { opacity: 0.2; cursor: default; }
.prism-reader__img {
    flex: 1;
    max-height: calc(90vh - 120px);
    width: auto;
    max-width: 100%;
    object-fit: contain;
    display: block;
    border-radius: 6px;
    box-shadow: 0 24px 80px rgba(0,0,0,0.8);
    transition: opacity 0.15s ease;
}
.prism-reader__dots {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 480px;
}
.prism-reader__dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: background 0.2s, transform 0.2s;
    flex-shrink: 0;
}
.prism-reader__dot.is-active {
    background: rgba(255,255,255,0.8);
    transform: scale(1.3);
}
.prism-reader__dot:hover { background: rgba(255,255,255,0.5); }

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 768px) {
    .prism-work-block__media--mix { grid-template-columns: 1fr; }
    .prism-book-open__preview { height: 200px; }
    .prism-reader__nav { display: none; }
}

/* ===================================================================
   GGVEGAS — 3-column 9:16 video row
   =================================================================== */
.ggv-video-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 40px;
}

.ggv-video-row video,
.ggv-video-row iframe {
    width: 100%;
    aspect-ratio: 9 / 16;
    object-fit: cover;
    display: block;
    border-radius: 8px;
    background: #000;
}

@media (max-width: 700px) {
    .ggv-video-row {
        grid-template-columns: 1fr;
    }
}