/*
Theme Name: Museum QR Archive Mobile PDF Fix
Theme URI: https://qr.museumofword.org/
Author: CRTL / NCSM
Description: Updated QR-ready digital content archive for the Museum of Word with cleaned exhibit names and bilingual branding.
Version: 1.5.1
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: museum-qr-archive
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
*/

:root {
  --qr-ink: #1d1b19;
  --qr-muted: #6b625a;
  --qr-paper: #f8f4ed;
  --qr-card: #fffdf9;
  --qr-accent: #8c3426;
  --qr-accent-dark: #612118;
  --qr-line: #ded4c7;
  --qr-shadow: 0 18px 45px rgba(48, 33, 22, .10);
  --qr-radius: 22px;
  --qr-max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--qr-ink);
  background:
    radial-gradient(circle at 15% 0%, rgba(140,52,38,.08), transparent 28rem),
    linear-gradient(180deg, #fbf8f2 0%, var(--qr-paper) 100%);
  font-family: "Noto Sans Devanagari", "Noto Sans Bengali", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
a { color: var(--qr-accent-dark); text-decoration-thickness: .08em; text-underline-offset: .18em; }
a:hover { color: var(--qr-accent); }
img { max-width: 100%; height: auto; }
button, input { font: inherit; }

.qr-shell { width: min(calc(100% - 32px), var(--qr-max)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,253,249,.92); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(222,212,199,.8); }
.site-header__inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-brand { display: flex; align-items: center; gap: 13px; text-decoration: none; color: var(--qr-ink); }
.site-brand__mark { width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center; color: #fff; background: var(--qr-accent); font-weight: 800; }
.site-brand__text strong { display: block; font-size: 1rem; line-height: 1.15; }
.site-brand__text span { color: var(--qr-muted); font-size: .78rem; }
.site-nav { display: flex; align-items: center; gap: 10px; }
.site-nav a { text-decoration: none; font-weight: 700; font-size: .9rem; padding: 10px 13px; border-radius: 999px; }
.site-nav a:hover { background: #f0e7dc; }

.hero { padding: 82px 0 48px; }
.hero__eyebrow { margin: 0 0 12px; color: var(--qr-accent); text-transform: uppercase; letter-spacing: .16em; font-weight: 800; font-size: .75rem; }
.hero h1 { max-width: 900px; margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.3rem, 6vw, 5.4rem); line-height: 1.02; letter-spacing: -.045em; }
.hero__lead { max-width: 750px; color: var(--qr-muted); font-size: clamp(1rem, 2vw, 1.25rem); margin: 24px 0 0; }
.hero__stats { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.stat-pill { border: 1px solid var(--qr-line); background: rgba(255,255,255,.7); border-radius: 999px; padding: 9px 14px; font-size: .87rem; font-weight: 700; }

.directory-tools { display: flex; gap: 14px; align-items: center; margin: 0 0 24px; }
.directory-search { width: min(100%, 520px); border: 1px solid var(--qr-line); border-radius: 14px; background: #fff; padding: 14px 16px; outline: none; }
.directory-search:focus { border-color: var(--qr-accent); box-shadow: 0 0 0 4px rgba(140,52,38,.10); }

.gallery-directory { display: grid; gap: 22px; padding-bottom: 80px; }
.gallery-group { background: rgba(255,253,249,.85); border: 1px solid var(--qr-line); border-radius: var(--qr-radius); box-shadow: var(--qr-shadow); overflow: hidden; }
.gallery-group__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 23px 25px; border-bottom: 1px solid var(--qr-line); }
.gallery-group__head h2 { margin: 0; font-size: clamp(1.1rem, 2.5vw, 1.45rem); }
.gallery-group__count { color: var(--qr-muted); font-weight: 700; font-size: .82rem; white-space: nowrap; }
.page-link-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(245px, 1fr)); gap: 1px; background: var(--qr-line); }
.page-link-card { background: var(--qr-card); padding: 21px 23px; display: flex; justify-content: space-between; align-items: center; gap: 16px; text-decoration: none; color: var(--qr-ink); min-height: 92px; }
.page-link-card:hover { background: #f8eee4; color: var(--qr-ink); }
.page-link-card strong { display: block; line-height: 1.25; }
.page-link-card small { display: block; color: var(--qr-muted); margin-top: 5px; }
.page-link-card__arrow { font-size: 1.3rem; color: var(--qr-accent); }
.empty-state { padding: 25px; color: var(--qr-muted); }

.content-hero { padding: 44px 0 28px; }
.breadcrumbs { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; color: var(--qr-muted); font-size: .86rem; margin-bottom: 20px; }
.breadcrumbs a { color: inherit; }
.content-hero h1 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.1rem, 5vw, 4.3rem); line-height: 1.04; letter-spacing: -.035em; }
.content-kicker { color: var(--qr-accent); font-weight: 800; margin: 0 0 8px; }
.content-meta { color: var(--qr-muted); margin-top: 14px; }

.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 34px; align-items: start; padding-bottom: 72px; }
.asset-list { display: grid; gap: 26px; }
.asset-card { background: var(--qr-card); border: 1px solid var(--qr-line); border-radius: var(--qr-radius); overflow: hidden; box-shadow: var(--qr-shadow); }
.asset-card__media { background: #eee7dd; min-height: 180px; display: grid; place-items: center; }
.asset-card__media img { display: block; width: 100%; height: auto; cursor: zoom-in; }
.pdf-frame { width: 100%; height: min(76vh, 820px); min-height: 520px; border: 0; background: #fff; }
.asset-card__body { padding: 18px 20px 20px; }
.asset-card__body h2 { margin: 0; font-size: 1.05rem; line-height: 1.35; overflow-wrap: anywhere; }
.asset-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 13px; }
.button, .asset-actions a, .asset-actions button { border: 1px solid var(--qr-line); background: #fff; color: var(--qr-ink); text-decoration: none; font-weight: 800; font-size: .82rem; border-radius: 999px; padding: 9px 13px; cursor: pointer; }
.button:hover, .asset-actions a:hover, .asset-actions button:hover { border-color: var(--qr-accent); color: var(--qr-accent-dark); }
.button--primary { color: #fff !important; background: var(--qr-accent) !important; border-color: var(--qr-accent) !important; }

.qr-card { position: sticky; top: 98px; background: #fff; border: 1px solid var(--qr-line); border-radius: var(--qr-radius); padding: 21px; box-shadow: var(--qr-shadow); text-align: center; }
.qr-card h2 { font-size: 1.05rem; margin: 0 0 6px; }
.qr-card p { color: var(--qr-muted); margin: 0 0 16px; font-size: .82rem; }
.qr-card img { display: block; width: 100%; aspect-ratio: 1; object-fit: contain; border: 10px solid #fff; border-radius: 10px; }
.qr-url { display: block; background: #f7f2eb; border-radius: 10px; padding: 10px; font-size: .72rem; overflow-wrap: anywhere; margin: 12px 0; text-align: left; }
.qr-card__actions { display: grid; gap: 8px; }
.qr-card__actions .button { width: 100%; }
.page-sequence { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 18px; }
.page-sequence a { border: 1px solid var(--qr-line); border-radius: 15px; padding: 14px; background: #fff; text-decoration: none; font-size: .82rem; }
.page-sequence a:last-child { text-align: right; }

.lightbox { position: fixed; inset: 0; z-index: 1000; background: rgba(20,16,13,.92); display: none; padding: 24px; place-items: center; }
.lightbox.is-open { display: grid; }
.lightbox img { max-height: 92vh; max-width: 94vw; object-fit: contain; }
.lightbox__close { position: fixed; top: 18px; right: 20px; width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.35); background: rgba(0,0,0,.3); color: #fff; font-size: 1.4rem; cursor: pointer; }

.site-footer { border-top: 1px solid var(--qr-line); padding: 28px 0 42px; color: var(--qr-muted); font-size: .84rem; }
.site-footer__inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

.not-found { padding: 90px 0; max-width: 700px; }
.not-found h1 { font-family: Georgia, serif; font-size: clamp(2.3rem, 6vw, 5rem); margin: 0 0 15px; }

.admin-qr-directory { max-width: 1300px; }
.admin-qr-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 15px; margin-top: 20px; }
.admin-qr-item { background: #fff; border: 1px solid #dcdcde; border-radius: 10px; padding: 14px; break-inside: avoid; }
.admin-qr-item img { width: 130px; height: 130px; display: block; margin: 8px auto; }
.admin-qr-item code { display: block; white-space: normal; overflow-wrap: anywhere; font-size: 10px; }
.admin-qr-item h3 { font-size: 14px; margin: 0; }

@media (max-width: 900px) {
  .content-layout { grid-template-columns: 1fr; }
  .qr-card { position: static; max-width: 430px; margin-inline: auto; }
  .site-nav a:nth-child(2) { display: none; }
}
@media (max-width: 620px) {
  .qr-shell { width: min(calc(100% - 22px), var(--qr-max)); }
  .site-header__inner { min-height: 64px; }
  .site-brand__text span { display: none; }
  .hero { padding-top: 54px; }
  .gallery-group__head { padding: 18px; }
  .page-link-card { padding: 17px 18px; min-height: 78px; }
  .page-sequence { grid-template-columns: 1fr; }
  .page-sequence a:last-child { text-align: left; }
}

@media print {
  body { background: #fff !important; }
  body.print-single-qr * { visibility: hidden !important; }
  body.print-single-qr .qr-card, body.print-single-qr .qr-card * { visibility: visible !important; }
  body.print-single-qr .qr-card { position: fixed !important; inset: 0 !important; margin: auto !important; width: 100mm !important; height: fit-content !important; box-shadow: none !important; border: 0 !important; }
  body.print-single-qr .qr-card__actions { display: none !important; }
  .admin-qr-grid { grid-template-columns: repeat(3, 1fr) !important; }
  .admin-qr-item { border: 1px solid #999; }
  .admin-qr-item button, .admin-qr-directory .button { display: none !important; }
}


/* Custom branding updates */
.site-header__inner { justify-content: space-between; }
.site-brand__mark { width: 64px; height: 64px; background: transparent; border-radius: 0; padding: 0; box-shadow: none; }
.site-brand__mark img { width: 100%; height: 100%; object-fit: contain; display: block; }
.site-brand__text strong, .site-brand__text span { display: block; line-height: 1.15; }
.site-brand__text strong { font-size: 1.08rem; }
.site-brand__text span { color: var(--qr-muted); font-size: 0.98rem; }
.hero__museum-name { display:block; font-size: clamp(1.65rem, 3vw, 2.5rem); margin: 0.2rem 0; }
.hero__museum-name--en { font-family: Georgia, 'Times New Roman', serif; }
.page-link-card small { line-height: 1.3; }
@media (max-width: 720px) {
  .site-brand__mark { width: 52px; height: 52px; }
}

/* Minimal homepage */
.hero--minimal { padding-top: clamp(2rem, 6vw, 4.5rem); padding-bottom: clamp(1.5rem, 4vw, 3rem); text-align: center; }
.hero--minimal .hero__museum-name { margin-left: auto; margin-right: auto; }
.gallery-group__head { justify-content: flex-start; }
.page-link-card { align-items: center; }

/* Responsive PDF previews: browser preview on desktop, PDF.js canvas on mobile. */
.pdf-preview-desktop { width: 100%; }
.pdfjs-mobile-viewer { display: none; width: 100%; background: #f2eee8; }
.pdfjs-mobile-viewer__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  padding: .65rem;
  border-bottom: 1px solid var(--qr-border);
  background: #fffdf9;
  position: sticky;
  top: 0;
  z-index: 2;
}
.pdfjs-mobile-viewer__toolbar .button {
  min-width: 74px;
  padding: .55rem .65rem;
  font-size: .82rem;
}
.pdfjs-mobile-viewer__toolbar .button:disabled { opacity: .45; cursor: not-allowed; }
.pdfjs-mobile-viewer__page-label {
  flex: 1;
  text-align: center;
  color: var(--qr-ink);
  font-size: .84rem;
  font-weight: 700;
}
.pdfjs-mobile-viewer__canvas-wrap {
  position: relative;
  width: 100%;
  min-height: 280px;
  padding: 9px;
  overflow: auto;
  text-align: center;
  background: #d8d3cd;
  -webkit-overflow-scrolling: touch;
}
.pdfjs-mobile-viewer canvas {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 5px 18px rgba(31, 24, 19, .18);
}
.pdfjs-mobile-viewer__status {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  width: calc(100% - 2rem);
  margin: 0;
  padding: .75rem;
  color: var(--qr-muted);
  background: rgba(255, 253, 249, .94);
  border-radius: 8px;
  font-size: .86rem;
}
.pdfjs-mobile-viewer__status.is-error { color: #8b1e1e; }
.pdfjs-mobile-viewer__fallback {
  display: flex;
  justify-content: center;
  gap: .6rem;
  padding: .7rem;
  border-top: 1px solid var(--qr-border);
  background: #fffdf9;
}

@media (max-width: 768px) {
  .pdf-preview-desktop { display: none !important; }
  .pdfjs-mobile-viewer { display: block; }
  .asset-card__media:has(.pdfjs-mobile-viewer) { min-height: 0; padding: 0; }
  .pdf-frame { min-height: 0; }
}


/* Mobile JPG preview for PDFs */
.pdf-preview-mobile-image { display: none; width: 100%; background: #f7f4ef; }
.pdf-preview-mobile-image__img { display: block; width: 100%; height: auto; background: #fff; }
.pdf-preview-mobile-image__actions {
  display: flex;
  gap: .6rem;
  justify-content: center;
  flex-wrap: wrap;
  padding: .8rem;
  border-top: 1px solid var(--qr-border);
  background: #fffdf9;
}
.pdf-preview-mobile-image__missing {
  padding: 1rem;
  text-align: center;
  color: var(--qr-muted);
  background: #fff;
}
@media (max-width: 768px) {
  .pdf-preview-desktop { display: none !important; }
  .pdf-preview-mobile-image { display: block; }
  .asset-card__media:has(.pdf-preview-mobile-image) { min-height: 0; padding: 0; }
}