/* Hiệu ứng scroll reveal */
        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s ease-out;
        }
        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }
        
        /* Drop cap cho chữ cái đầu tiên */
        .drop-cap::first-letter {
            float: left;
            font-size: 4.5rem;
            line-height: 0.8;
            font-weight: bold;
            color: #d4af37;
            margin-right: 0.8rem;
            margin-top: 0.4rem;
            font-family: 'Merriweather', serif;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }

        /* Parallax background */
        .bg-parallax {
            background-attachment: fixed;
            background-position: center;
            background-repeat: no-repeat;
            background-size: cover;
        }

        /* Modal backdrop blur */
        .modal-backdrop {
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        /* Hover effect for clickable cards */
        .click-card {
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .click-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 25px -5px rgba(212, 175, 55, 0.2), 0 10px 10px -5px rgba(212, 175, 55, 0.1);
            border-color: #d4af37;
        }

        /* Map Point Animations */
        .map-point {
            position: absolute;
            transform: translate(-50%, -50%);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .map-point .core {
            background-color: #d4af37;
            border-radius: 50%;
            position: relative;
            z-index: 10;
            box-shadow: 0 0 15px rgba(212, 175, 55, 0.8);
            transition: all 0.3s ease;
        }
        .map-point:hover .core, .map-point.active .core {
            background-color: #fce7f3;
            box-shadow: 0 0 25px rgba(255, 255, 255, 0.9), 0 0 10px #d4af37 inset;
            transform: scale(1.2);
        }
        .map-point .ring {
            position: absolute;
            top: 50%; left: 50%;
            transform: translate(-50%, -50%);
            border-radius: 50%;
            background-color: rgba(212, 175, 55, 0.4);
            animation: ping-slow 2.5s cubic-bezier(0, 0, 0.2, 1) infinite;
            z-index: 1;
        }
        @keyframes ping-slow {
            75%, 100% { transform: translate(-50%, -50%) scale(2.5); opacity: 0; }
        }

        /* Custom scrollbar */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: #0f172a; }
        ::-webkit-scrollbar-thumb { background: #475569; border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: #d4af37; }