/* GMT Catalog Flipbook — 2026-10-24 (fullscreen + zoom) */
.gmt-cat-section{max-width:1240px;margin:0 auto;padding:56px 18px 30px}
.gmt-cat-head{text-align:center;margin-bottom:28px}
.gmt-cat-head h2{font-size:30px;line-height:1.2;margin:0 0 8px;color:#1f2937;font-weight:800;letter-spacing:-.4px}
.gmt-cat-head p{margin:0;color:#6b7280;font-size:15px}
.gmt-cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
@media(max-width:1100px){.gmt-cat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:760px){.gmt-cat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}}
@media(max-width:420px){.gmt-cat-grid{grid-template-columns:1fr}}
.gmt-cat-card{background:#fff;border:1px solid #e8e3dc;border-radius:12px;overflow:hidden;box-shadow:0 4px 18px rgba(15,23,42,.05);display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease}
.gmt-cat-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(15,23,42,.12)}
.gmt-cat-cover{position:relative;background:#f4f1ec;aspect-ratio:1/1.414;overflow:hidden}
.gmt-cat-cover img{width:100%;height:100%;object-fit:cover;display:block}
.gmt-cat-badge{position:absolute;right:10px;bottom:10px;background:rgba(30,41,59,.82);color:#fff;font-size:11px;font-weight:700;padding:4px 8px;border-radius:5px;letter-spacing:.3px}
.gmt-cat-info{padding:13px 14px 15px;display:flex;flex-direction:column;gap:4px;flex:1}
.gmt-cat-cat{font-size:11px;font-weight:700;color:#F59E0B;text-transform:uppercase;letter-spacing:.6px}
.gmt-cat-title{font-size:14px;font-weight:700;color:#1f2937;line-height:1.35;margin:0;min-height:38px}
.gmt-cat-meta{font-size:12px;color:#9ca3af;margin-top:2px}
.gmt-cat-open{margin-top:auto;padding-top:10px}
.gmt-cat-open button{width:100%;border:0;border-radius:8px;background:#1E293B;color:#fff;font-size:13px;font-weight:700;padding:9px 10px;cursor:pointer;transition:background .15s}
.gmt-cat-open button:hover{background:#F59E0B;color:#1E293B}

/* ---------- fullscreen viewer ---------- */
.gmt-flip-modal{position:fixed;inset:0;z-index:999999;background:#0b111a;display:none;align-items:stretch;justify-content:stretch;padding:0;overscroll-behavior:contain}
.gmt-flip-modal.on{display:flex}
.gmt-flip-shell{width:100vw;height:100vh;height:100dvh;display:flex;flex-direction:column;background:#141b26;overflow:hidden;border-radius:0;box-shadow:none}
.gmt-flip-top{display:flex;align-items:center;gap:10px;padding:8px 10px;background:#1E293B;color:#fff;flex:0 0 auto;min-height:50px}
.gmt-flip-top b{font-size:15px;font-weight:700;flex:1 1 auto;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.gmt-flip-top .gmt-flip-count{font-size:13px;color:#cbd5e1;font-variant-numeric:tabular-nums;flex:0 0 auto}
.gmt-flip-tools{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.gmt-flip-tool{border:0;background:rgba(255,255,255,.12);color:#fff;min-width:38px;height:36px;padding:0 8px;border-radius:8px;font-size:18px;font-weight:700;line-height:1;cursor:pointer;-webkit-appearance:none;appearance:none;transition:background .15s,color .15s}
.gmt-flip-tool svg{display:block;margin:0 auto}
.gmt-flip-tool:hover{background:#F59E0B;color:#1E293B}
.gmt-flip-tool:disabled{opacity:.3;cursor:default;background:rgba(255,255,255,.08);color:#fff}
.gmt-flip-zoomval{font-size:13px;font-weight:700;min-width:58px;font-variant-numeric:tabular-nums}
.gmt-flip-close{border:0;background:rgba(255,255,255,.12);color:#fff;width:38px;height:36px;border-radius:8px;font-size:17px;cursor:pointer;line-height:1;flex:0 0 auto}
.gmt-flip-close:hover{background:#F59E0B;color:#1E293B}

.gmt-flip-stage{flex:1;min-height:0;position:relative;overflow:hidden;background:#0f1620}
.gmt-flip-view{position:absolute;inset:0;overflow:auto;display:flex;align-items:center;justify-content:center;padding:6px;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
.gmt-flip-view.zoomed{display:block;padding:0}
.gmt-flip-canvas{position:relative;flex:0 0 auto;margin:0 auto}
.gmt-flip-scaler{position:absolute;top:0;left:0;will-change:transform}
.gmt-flip-book{position:relative;margin:0 auto}
.gmt-page{width:100%;height:100%;background:#fff;overflow:hidden}
.gmt-page img{width:100%;height:100%;object-fit:contain;display:block;user-select:none;-webkit-user-drag:none;-webkit-touch-callout:none}

.gmt-flip-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:6;border:0;background:rgba(20,27,38,.55);color:#fff;width:44px;height:76px;border-radius:10px;font-size:32px;cursor:pointer;line-height:1;padding:0;transition:background .15s,opacity .15s;opacity:.85}
.gmt-flip-nav:hover{background:#F59E0B;color:#1E293B;opacity:1}
.gmt-flip-nav:disabled{opacity:.2;cursor:default;background:rgba(20,27,38,.45);color:#fff}
.gmt-flip-prev{left:8px}
.gmt-flip-next{right:8px}
.gmt-flip-hint{display:none}

@media(max-width:760px){
 .gmt-flip-top{gap:6px;padding:6px 8px;min-height:46px}
 .gmt-flip-top b{font-size:13px}
 .gmt-flip-tools{margin-left:auto}
 .gmt-flip-top .gmt-flip-count{font-size:12px}
 .gmt-flip-tool{min-width:34px;height:32px;font-size:16px;padding:0 6px}
 .gmt-flip-zoomval{min-width:50px;font-size:12px}
 .gmt-flip-close{width:34px;height:32px;font-size:15px}
 .gmt-flip-view{padding:0}
 .gmt-flip-nav{width:30px;height:60px;font-size:24px;background:rgba(20,27,38,.45)}
 .gmt-flip-prev{left:2px}
 .gmt-flip-next{right:2px}
 .gmt-cat-head h2{font-size:24px}
}
@media(max-width:430px){
 .gmt-flip-top b{display:none}
 .gmt-flip-top .gmt-flip-count{margin-right:auto}
}

.gmt-cat-loading{grid-column:1/-1;text-align:center;color:#9ca3af;font-size:14px;padding:30px 0}

.gmt-cat-cta{display:flex;align-items:center;gap:18px;justify-content:space-between;background:#1E293B;color:#fff;border-radius:12px;padding:22px 26px;margin-top:30px;flex-wrap:wrap}
.gmt-cat-cta-txt b{display:block;font-size:18px;margin-bottom:4px}
.gmt-cat-cta-txt span{color:#cbd5e1;font-size:13px;line-height:1.5}
.gmt-cat-cta-btn{background:#F59E0B;color:#1E293B;font-weight:800;padding:12px 24px;border-radius:8px;text-decoration:none;white-space:nowrap;transition:background .15s}
.gmt-cat-cta-btn:hover{background:#fff;color:#1E293B}
@media(max-width:600px){.gmt-cat-cta{padding:18px;gap:12px}.gmt-cat-cta-btn{width:100%;text-align:center}}