/* ============================================================
   Poster modal - shared by research.html and publications.html
   Markup is created at runtime by assets/js/poster-modal.js,
   so this file is the only place the modal is styled.
   ============================================================ */

/* Poster modal */
.poster-modal {
    position: fixed;
    inset: 0;
    /* must sit above the fixed navbar (z-index: 9999) */
    z-index: 100000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.28s ease, visibility 0.28s ease;
}

.poster-modal.is-open {
    visibility: visible;
    opacity: 1;
}

.poster-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.poster-dialog {
    position: relative;
    display: flex;
    flex-direction: column;
    width: min(880px, 100%);
    max-height: calc(100vh - 48px);
    max-height: calc(100dvh - 48px);
    background: #fff;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 30px 70px rgba(2, 6, 23, 0.35);
    opacity: 0;
    transform: translateY(28px) scale(0.94);
    transition: transform 0.42s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.poster-modal.is-open .poster-dialog {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.poster-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 16px 18px;
    border-bottom: 1px solid #e2e8f0;
    background: linear-gradient(180deg, rgba(79, 70, 229, 0.07), rgba(79, 70, 229, 0));
}

.poster-title {
    font-family: 'Outfit', sans-serif;
    font-weight: 900;
    font-size: 18px;
    margin: 0;
    color: #0f172a;
}

.poster-eyebrow {
    margin: 0;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
}

.poster-close {
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #e2e8f0;
    border-radius: 50%;
    background: #fff;
    color: #334155;
    cursor: pointer;
    transition: 0.22s ease;
}

.poster-close:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    transform: rotate(90deg);
}

.poster-close svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2.2;
    stroke-linecap: round;
}

.poster-body {
    flex: 1 1 auto;
    min-height: 0;
    /* lets the flex child actually shrink so it can scroll */
    padding: 18px;
    overflow: auto;
    overscroll-behavior: contain;
    /* don't hand the scroll back to the page */
    -webkit-overflow-scrolling: touch;
    background: #f8fafc;
    /* flex + margin:auto centres the poster but — unlike text-align/justify-content
       — keeps the top-left reachable once it overflows and has to scroll */
    display: flex;
}

.poster-body img {
    margin: auto;
    /* Without this the image is a shrinkable flex item: its automatic minimum
       size caps at the file's natural width, so zooming past that did nothing. */
    flex: 0 0 auto;
    max-width: 100%;
    max-height: calc(100vh - 240px);
    max-height: calc(100dvh - 240px);
    border-radius: 10px;
    border: 1px solid #e2e8f0;
    background: #fff;
    box-shadow: 0 8px 22px rgba(2, 6, 23, 0.08);
    /* always draggable — hovering the poster shows the pan cursor */
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
    -webkit-user-drag: none;
}

/* Zoomed in: explicit width is set inline, image may overflow and scroll */
.poster-body.is-zoomed img {
    max-width: none;
    max-height: none;
}

.poster-body.is-panning,
.poster-body.is-panning img {
    cursor: grabbing;
}

.poster-body img.is-hidden {
    display: none;
}

.poster-fallback {
    display: none;
    margin: auto;
    padding: 48px 18px;
    color: var(--muted);
    font-size: 14px;
    text-align: center;
}

.poster-fallback.is-shown {
    display: block;
}

.poster-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 14px;
    border-top: 1px solid #e2e8f0;
    font-size: 12.5px;
    color: var(--muted);
    background: #fff;
}

/* Zoom controls */
.poster-zoom {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px;
    border: 1px solid #e2e8f0;
    border-radius: 999px;
    background: #f8fafc;
}

.poster-zoom button {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: #fff;
    color: #334155;
    font-size: 17px;
    font-weight: 800;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(2, 6, 23, 0.12);
    transition: 0.18s ease;
}

.poster-zoom button:hover:not(:disabled) {
    background: var(--accent);
    color: #fff;
    transform: translateY(-1px);
}

.poster-zoom button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    box-shadow: none;
}

.poster-zoom button svg {
    width: 17px;
    height: 17px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.9;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.poster-zoom .zoom-reset {
    width: auto;
    padding: 0 12px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.poster-zoom-level {
    min-width: 48px;
    text-align: center;
    font-size: 12px;
    font-weight: 800;
    color: #334155;
    font-variant-numeric: tabular-nums;
}

@media (max-width: 520px) {
    .poster-foot {
        justify-content: center;
    }

    .poster-foot .poster-foot-hint {
        display: none;
    }
}

/* These pages scroll on <html> (html { overflow-y: scroll }), so the lock
   has to go there too — locking only <body> leaves the page scrollable.
   padding-right compensates for the vanishing scrollbar. */
html.poster-open,
body.poster-open {
    overflow: hidden !important;
}

html.poster-open {
    padding-right: var(--poster-sbw, 0px);
}

/* Trigger styling: any element that opens a poster */
.poster-trigger {
    cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {

    .poster-modal,
    .poster-dialog {
        transition-duration: 0.01ms !important;
    }
}