:root {
            --primary-color: #fc2651;
            --text-color: #333;
            --background-color: #FFFFFF;
            --card-bg: #f8f8f8;
            --card-border: #e0e0e0;
            --shadow: rgba(0, 0, 0, 0.1);
            --popup-bg: #fff;
        }

        .dark-mode {
            --primary-color: #fc2651;
            --text-color: #e0e0e0;
            --background-color: #181818;
            --card-bg: #252525;
            --card-border: #383838;
            --shadow: rgba(0, 0, 0, 0.4);
            --popup-bg: #252525;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            margin: 0;
            padding: 0;
            background-color: var(--background-color);
            color: var(--text-color);
            transition: background-color 0.3s, color 0.3s;
        }

        header {
            background-color: var(--primary-color);
            color: white;
            padding: 1rem;
            text-align: center;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 5px var(--shadow);
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
        }

        .search-container {
            display: flex;
            gap: 10px;
            margin: 0.5rem 0;
        }

        #searchBar {
            padding: 0.5rem;
            border-radius: 4px;
            border: 1px solid var(--card-border);
            flex-grow: 1;
            min-width: 0;
            font-size: 16px;
        }

        #sortOptions {
            padding: 0.5rem;
            border-radius: 4px;
            border: 1px solid var(--card-border);
            font-size: 16px;
        }

        .control-buttons {
            display: flex;
            gap: 10px;
        }

        #settings {
            background-color: transparent;
            border: none;
            color: white;
            font-size: 1.2rem;
            cursor: pointer;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem;
        }

        #container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 20px;
            margin-top: 1rem;
        }

        .zone-item {
            background-color: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 8px;
            overflow: hidden;
            cursor: pointer;
            box-shadow: 0 2px 4px var(--shadow);
            display: flex;
            flex-direction: column;
        }

        .zone-item:hover {
            background-color: var(--card-border);
        }

        .zone-item img {
            width: 100%;
            aspect-ratio: 1;
            object-fit: cover;
        }

        .zone-item button {
            background-color: var(--card-bg);
            color: var(--text-color);
            border: none;
            padding: 10px;
            cursor: pointer;
            font-weight: bold;
            flex-grow: 1;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        #zoneViewer {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: var(--background-color);
            z-index: 1000;
            display: none;
            flex-direction: column;
        }

        .zone-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background-color: var(--primary-color);
            color: white;
            padding: 0.5rem 1rem;
        }

        .zone-title {
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        #zoneName {
            font-size: 1.2rem;
            font-weight: bold;
            margin: 0;
        }

        #zoneId {
            display: none;
        }

        #zoneAuthor {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
        }

        #zoneAuthor:hover {
            text-decoration: underline;
        }

        .zone-controls {
            display: flex;
            gap: 10px;
        }

        .zone-controls button {
            background-color: transparent;
            border: 1px solid white;
            color: white;
            padding: 0.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        }

        .zone-controls button:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        #zoneFrame {
            flex-grow: 1;
            border: none;
            width: 100%;
            height: 100%;
        }

        #popupOverlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 2000;
        }

        .popup {
            background-color: var(--popup-bg);
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            width: 90%;
            max-width: 500px;
            max-height: 80vh;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .popup-header {
            background-color: var(--primary-color);
            color: white;
            padding: 0.8rem 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        #popupTitle {
            margin: 0;
            font-size: 1.2rem;
        }

        #popupClose {
            background: transparent;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            line-height: 1;
        }

        #popupBody {
            padding: 1rem;
            overflow-y: auto;
            color: var(--text-color);
        }

        #popupBody input[type="text"],
        #popupBody input[type="file"] {
            width: 100%;
            padding: 0.5rem;
            margin-bottom: 1rem;
            border: 1px solid var(--card-border);
            border-radius: 4px;
            background-color: var(--card-bg);
            color: var(--text-color);
            font-size: 16px;
        }

        #settings-button {
            display: block;
            width: 100%;
            padding: 0.75rem;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 16px;
            margin-bottom: 1rem;
        }

        footer {
            background-color: var(--card-bg);
            padding: 1rem;
            text-align: center;
            margin-top: 2rem;
            border-top: 1px solid var(--card-border);
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 20px;
        }

        .footer-links a {
            color: var(--primary-color);
            text-decoration: none;
        }

        .footer-links a:hover {
            text-decoration: underline;
        }

        #zoneCount {
            margin: 0.5rem 0;
            font-size: 0.9rem;
            color: var(--text-color);
        }

        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 10px;
            }

            .search-container {
                width: 100%;
            }

            #container {
                grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
                gap: 15px;
            }

            .zone-item img {
                height: 140px;
            }

            .zone-item button {
                height: 60px;
                font-size: 14px;
            }
        }