/* ------- Tipografía global: Noto Sans ------- */
        html, body, button, input, textarea, select,
        .swal2-popup, .swal2-title, .swal2-html-container,
        .swal2-confirm, .swal2-cancel,
        #exhibition-title, #pano-loader {
            font-family: 'Noto Sans', system-ui, -apple-system, sans-serif;
        }

        html, body {
            margin: 0; padding: 0; height: 100%;
            overflow: hidden; background: #000;
        }

        #main-header {
            position: fixed; top: 0; left: 0; width: 100vw;
            display: flex; align-items: center; gap: 20px;
            z-index: 300; padding: 8px 20px 8px 8px;
        }
        #logo {
            max-width: 200px; height: auto; width: 100%;
            background: rgba(0, 0, 0, 0.1); object-fit: contain;
        }
        #exhibition-title {
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.02em;
            text-shadow: 0 1px 4px rgba(0,0,0,0.7);
            pointer-events: none;
        }

        #panorama-container {
            width: 100vw; height: 100vh;
            position: relative; cursor: grab;
        }
        #panorama-container:active { cursor: grabbing; }

        /* Loader */
        #pano-loader {
            position: fixed; top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0, 0, 0, 0.55);
            display: flex; flex-direction: column;
            align-items: center; justify-content: center; gap: 14px;
            color: #fff; font-size: 14px;
            z-index: 400;
            opacity: 0; visibility: hidden;
            transition: opacity 0.25s ease, visibility 0.25s ease;
        }
        #pano-loader.visible { opacity: 1; visibility: visible; }
        #pano-loader .spinner {
            width: 46px; height: 46px;
            border: 4px solid rgba(255, 255, 255, 0.2);
            border-top-color: #fff; border-radius: 50%;
            animation: spin 0.9s linear infinite;
        }
        @keyframes spin { to { transform: rotate(360deg); } }

        #thumbnail-container {
            position: fixed; bottom: 110px; left: 50%;
            transform: translateX(-50%);
            display: flex; gap: 10px; z-index: 100;
            transition: bottom 0.3s ease;
            max-width: 96vw; overflow-x: auto; padding: 4px;
            scrollbar-width: none;
        }
        #thumbnail-container::-webkit-scrollbar { display: none; }

        .thumbnail {
            width: 100px; height: 60px;
            object-fit: cover; border: 2px solid white;
            cursor: pointer; flex-shrink: 0; background: #222;
            display: block;
            transition: border-color 0.2s, transform 0.2s;
        }
        .thumbnail:hover { transform: scale(1.05); }
        .thumbnail.active {
            border-color: #e63946;
            box-shadow: 0 0 0 2px rgba(230, 57, 70, 0.35);
        }

        #interactive-menu {
            position: fixed; bottom: 10px; left: 50%;
            transform: translateX(-50%);
            display: flex; gap: 14px;
            background: rgba(0, 0, 0, 0.7); border-radius: 18px;
            padding: 12px 20px; z-index: 500;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
            align-items: center; opacity: 1;
            transition: opacity 0.3s;
        }
        #interactive-menu button {
            background: rgba(255, 255, 255, 0.9); border: none;
            padding: 10px 13px; border-radius: 8px;
            cursor: pointer; font-size: 22px;
            display: flex; align-items: center;
            transition: background 0.2s; touch-action: manipulation;
        }
        #interactive-menu button:hover { background: #ffe0b2; }
        #interactive-menu button:disabled { opacity: 0.5; cursor: not-allowed; }

        #show-menu-fab {
            display: none; position: fixed;
            bottom: 22px; right: 22px; z-index: 999;
            background: #fff; color: #222; border: none;
            border-radius: 50%; width: 54px; height: 54px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
            font-size: 2rem;
            align-items: center; justify-content: center;
            cursor: pointer; opacity: 0.92;
        }
        #show-menu-fab:active { opacity: 1; }

        @media (max-width: 1024px) {
            #interactive-menu { gap: 10px; padding: 10px 8px; }
            #interactive-menu button { font-size: 18px; padding: 8px 8px; }
            #logo { max-width: 140px; }
            #exhibition-title { font-size: 13px; }
        }
        @media (max-width: 900px) {
            #show-menu-fab { display: flex; }
        }
        @media (max-width: 768px) {
            #rotate-left-btn, #rotate-right-btn,
            #look-up-btn, #look-down-btn,
            #zoom-in-btn, #zoom-out-btn { display: none !important; }
            #main-header { padding: 4px 8px; gap: 10px; }
            #logo { max-width: 110px; }
            #exhibition-title { font-size: 11px; }
            #interactive-menu { flex-wrap: wrap; gap: 8px; padding: 8px 4px; }
            #interactive-menu button { font-size: 15px; padding: 7px 8px; }
            #thumbnail-container { bottom: 90px; gap: 5px; }
            .thumbnail { width: 70px; height: 42px; border-width: 1px; }
        }
        @media (max-width: 480px) {
            #thumbnail-container { bottom: 80px; gap: 4px; }
            #logo { max-width: 90px; }
            #exhibition-title { display: none; }
            .thumbnail { width: 58px; height: 35px; }
            #interactive-menu {
                flex-wrap: wrap; gap: 6px; padding: 7px 2px;
                width: 98vw; left: 1vw; transform: none;
                justify-content: center;
            }
        }

        .swal-responsive {
            max-width: 400px !important; width: 90vw !important;
            min-width: 220px !important; padding: 0 !important;
        }
        @media (max-width: 600px) {
            .swal2-popup.swal-responsive {
                font-size: 0.95rem !important;
                padding: 0.3em 0.3em !important;
                max-width: 96vw !important;
            }
            .swal2-title { font-size: 1em !important; }
            .swal2-html-container { font-size: 0.93em !important; }
        }