/* 
        COLOR PALETTE OPTIONS - Uncomment one palette at a time
        
        PALETTE 1: White background with teal accent (DEFAULT - ACTIVE)
        PALETTE 2: Purple background with yellow accent
        PALETTE 3: Gradient with orange accent
        
        To switch palettes:
        1. Comment out the active palette's :root section
        2. Uncomment the desired palette's :root section
        */
        
        /* PALETTE 1: White background with teal accent (DEFAULT) */
        :root {
            --bg-color: #ffffff;
            --text-color: #000000;
            --accent-color: #00b4d8;
            --accent-hover: #0096c7;
            --border-color: #00b4d8;
        }
        
        /* PALETTE 2: Purple background with yellow accent */
        /*
        :root {
            --bg-color: #4a0e4e;
            --text-color: #ffffff;
            --accent-color: #ffd60a;
            --accent-hover: #ffc300;
            --border-color: #ffd60a;
        }
        */
        
        /* PALETTE 3: Gradient background with orange accent */
        /*
        :root {
            --bg-color: #f4f4f4;
            --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --text-color: #000000;
            --accent-color: #ff6b35;
            --accent-hover: #f7931e;
            --border-color: #ff6b35;
        }
        */

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background: var(--bg-color);
            min-height: 100vh;
        }

        .skip-link {
            position: absolute;
            top: -40px;
            left: 0;
            background: var(--accent-color);
            color: var(--text-color);
            padding: 8px 16px;
            z-index: 100;
            text-decoration: none;
            font-weight: 900;
        }

        .skip-link:focus {
            top: 0;
        }

        header {
            background: var(--bg-color);
            padding: 2.5rem 2rem 1.5rem;
            text-align: left;
            border-bottom: 4px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
        }

        .title {
            font-family: 'Inter', sans-serif;
            font-size: clamp(2rem, 4rem, 4rem);
            line-height: 0.9;
            letter-spacing: -0.05em;
            margin-bottom: 0;
            color: var(--text-color);
            font-weight: 900;
            flex-shrink: 0;
        }

        .header-images {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            overflow: hidden;
            flex-wrap: nowrap;
            max-height: 80px;
        }

        .header-images img {
            height: 60px;
            width: auto;
            object-fit: contain;
            border: 2px solid var(--border-color);
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

        .header-images img:hover {
            transform: scale(1.05);
            border-color: var(--accent-hover);
            box-shadow: 0 0 20px rgba(0, 180, 216, 0.3);
        }

        main {
            max-width: 1600px;
            margin: 0 auto;
            padding: 0rem 2rem;
        }

        #gallery-section {
            margin: 1.5rem 0;
        }

        #gallery-section h3 {
            font-family: 'Inter', sans-serif;
            font-size: clamp(3rem, 10vw, 8rem);
            margin-bottom: 3rem;
            text-align: center;
            color: var(--accent-color);
            font-weight: 900;
            letter-spacing: -0.04em;
            text-transform: uppercase;
        }

        .filter-controls {
            display: flex;
            justify-content: center;
            margin-bottom: 1.5rem;
        }

        .filter-checkbox {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            cursor: pointer;
            padding: 1rem 1.5rem;
            background: var(--bg-color);
            border: 3px solid var(--text-color);
            transition: all 0.3s ease;
        }

        .filter-checkbox:hover {
            border-color: var(--accent-color);
            box-shadow: 0 0 20px rgba(0, 180, 216, 0.3);
        }

        .filter-checkbox input[type="checkbox"] {
            width: 20px;
            height: 20px;
            cursor: pointer;
            accent-color: var(--accent-color);
        }

        .filter-checkbox span {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-color);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 0;
        }

        .gallery-item {
            position: relative;
            background: var(--bg-color);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .gallery-item:hover figure {
            border-color: var(--accent-color);
            box-shadow: 
                0 0 40px rgba(0, 180, 216, 0.5),
                0 0 80px rgba(0, 180, 216, 0.3);
        }
        
        .gallery-item:hover {
            transform: translateY(-5px);
        }

        .gallery-item img {
            width: 100%;
            aspect-ratio: 1;
            object-fit: cover;
            display: block;
            background-color: #1a1a1a;
            transition: all 0.3s ease;
        }
        
        /* Lazy loading fade-in effect */
        img[loading="lazy"] {
            opacity: 0;
            transition: opacity 0.3s;
        }
        
        img[loading="lazy"].loaded {
            opacity: 1;
        }

        .gallery-item figure {
            margin: 0;
            padding: 0;
            overflow: hidden;
            border: 3px solid var(--text-color);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .gallery-item figure img {
            width: 100%;
            aspect-ratio: 1;
            object-fit: cover;
            display: block;
            transition: all 0.3s ease;
        }

        .gallery-item:hover img {
            filter: brightness(1.1) contrast(1.1);
        }

        .gallery-item:hover figure img {
            filter: brightness(1.1) contrast(1.1);
        }

        /* Greyed out effect for non-multilingual images when filter is active */
        .gallery-item.greyed-out {
            opacity: 0.65;
            filter: grayscale(100%);
        }

        .gallery-item.greyed-out:hover figure {
            border-color: var(--text-color);
            box-shadow: none;
        }
        
        .gallery-item.greyed-out:hover {
            opacity: 0.8;
            filter: grayscale(100%);
            transform: none;
        }
        
        .gallery-item.greyed-out img,
        .gallery-item.greyed-out:hover img {
            filter: none;
        }

        .gallery-item figcaption {
            padding: 1.5rem;
            font-size: 1rem;
            line-height: 1.5;
            color: var(--text-color);
            font-weight: 400;
            background: var(--bg-color);
            border-top: 2px solid var(--accent-color);
        }

        .callout-box {
            background: var(--text-color);
            color: var(--bg-color);
            padding: 1rem .5rem 1rem .5rem;
            border: 4px solid var(--accent-color);
            margin: 1rem 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.5rem;
            align-items: center;
        }

        .callout-box h3 {
            font-family: 'Inter', sans-serif;
            font-size: clamp(2.5rem, 6vw, 5rem);
            line-height: 0.9;
            margin-bottom: 0;
            font-weight: 900;
            color: var(--accent-color);
            text-transform: uppercase;
            letter-spacing: -0.03em;
        }
        
        .callout-box h3 .lead {
        color: gray;
        }

        .callout-box p {
            font-size: clamp(1rem, 2vw, 1.3rem);
            line-height: 1.6;
            color: var(--bg-color);
            font-weight: 400;
        }
        
        .callout-box strong {
            font-size: 1.5em;
            line-height: 1.2;
            font-weight: 900;
            color: var(--accent-color);
        }

        .callout-box a {
            color: var(--accent-color);
            text-decoration: none;
            font-weight: 700;
            transition: all 0.3s ease;
            border-bottom: 2px solid var(--accent-color);
        }

        .callout-box a:hover {
            color: var(--text-color);
            background: var(--accent-color);
            padding: 0 4px;
        }

        nav {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin: 4rem auto;
            padding: 0 2rem;
            max-width: 1600px;
            flex-wrap: wrap;
        }

        nav a {
            padding: 1.2rem 2.5rem;
            font-family: 'Inter', sans-serif;
            font-size: clamp(1rem, 2vw, 1.3rem);
            font-weight: 900;
            text-decoration: none;
            color: var(--text-color);
            background: var(--bg-color);
            border: 3px solid var(--text-color);
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            min-height: 44px;
            min-width: 44px;
        }

        nav a:hover {
            background: var(--accent-color);
            border-color: var(--accent-color);
            box-shadow: 
                0 0 40px rgba(0, 180, 216, 0.5),
                0 0 80px rgba(0, 180, 216, 0.3);
            transform: translateY(-2px);
        }

        nav a:focus {
            outline: 3px solid var(--accent-color);
            outline-offset: 2px;
        }

        footer {
            text-align: center;
            padding: 3rem 2rem;
            color: var(--text-color);
            background: var(--bg-color);
            margin-top: 4rem;
            border-top: 4px solid var(--accent-color);
            font-weight: 400;
        }

        footer a {
            color: var(--accent-color);
            text-decoration: none;
            font-weight: 700;
            border-bottom: 2px solid var(--accent-color);
            transition: all 0.3s ease;
        }

        footer a:hover {
            color: var(--text-color);
            background: var(--accent-color);
            padding: 0 4px;
        }

        footer a:focus {
            outline: 3px solid var(--accent-color);
            outline-offset: 2px;
        }

        @media (max-width: 1200px) {
            .gallery-grid { 
                grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            }
        }

        @media (max-width: 900px) {
            .gallery-grid { 
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
            header { 
                padding: 3rem 1.5rem 2.5rem;
                flex-direction: column;
                align-items: flex-start;
            }
            .header-images {
                width: 100%;
                justify-content: flex-start;
            }
            .callout-box {
                grid-template-columns: 1fr;
                gap: 2rem;
                padding: 2rem;
            }
        }
        
        @media (max-width: 768px) {
            .gallery-grid { 
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
            main {
                padding: 0 1rem;
            }
            .header-images img {
                height: 50px;
            }
        }

        @media (max-width: 600px) {
            .gallery-grid { 
                grid-template-columns: 1fr;
            }
            header { padding: 2.5rem 1rem 2rem; }
            .callout-box { padding: 2rem 1.5rem; }
            nav { gap: 1rem; }
            nav a {
                padding: 1rem 2rem;
            }
            .header-images img {
                height: 40px;
            }
        }