*, *::before, *::after {
            box-sizing: border-box;
        }

        :root {
            /* Windows XP Luna Theme Palette */
            --xp-blue-title: #0058EE;
            --xp-blue-title-gradient: linear-gradient(to bottom, #0058EE 0%, #3593FF 4%, #2884F6 18%, #0054E9 100%);
            --xp-bg: #ECE9D8;
            --xp-window-bg: #FFFFFF;
            --xp-border: #00138C;
            --xp-taskbar: #245DDA;
            --xp-green-start: #388E3C;
            --xp-text: #000000;
            --xp-sidebar-header: linear-gradient(to right, #FFFFFF 0%, #C6D3F7 100%);
            --xp-sidebar-bg: #D6DFF7; /* #7BA2E7 is darker, D6DFF7 is the light blue bg */
            --xp-sidebar-border: #FFFFFF;
            
            --font-stack: "Tahoma", "Verdana", "Segoe UI", sans-serif;
        }

        body {
            font-family: var(--font-stack);
            background-color: #5B7EDC; /* Classic Bliss Blue-ish */
            /* Bliss Hill approximation */
            background-image: url('../images/fondo.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: var(--xp-text);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 11px; /* XP default font size was small */
        }

        /* Layout */
        .dashboard-shell {
            width: 100%;
            max-width: 1024px;
            padding: 10px;
            height: 95vh;
            display: flex;
            flex-direction: column;
        }

        /* XP Window Style Base */
        .xp-window {
            background: var(--xp-window-bg);
            border: 3px solid var(--xp-border);
            border-radius: 8px 8px 0 0;
            box-shadow: 2px 2px 5px rgba(0,0,0,0.3);
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .top-strip {
            /* Mimic a top window title bar */
            background: var(--xp-blue-title-gradient);
            border: 3px solid var(--xp-border);
            border-radius: 8px 8px 0 0;
            padding: 8px 15px;
            margin-bottom: 0; /* Connected to the body below */
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            color: white;
            box-shadow: 2px 2px 5px rgba(0,0,0,0.3);
            position: relative;
            z-index: 10;
        }

        .top-strip .titles {
            grid-column: 2;
            text-align: center;
        }
        
        .top-strip .titles h1 {
            font-size: 16px;
            margin: 0;
            text-shadow: 1px 1px 0 #00138C;
            font-weight: bold;
            font-family: "Trebuchet MS", "Tahoma", sans-serif;
        }
        
        .top-strip .titles p {
            margin: 0;
            font-size: 11px;
            opacity: 0.9;
            display: none; /* Hide subtitle for cleaner title bar look */
        }

        .top-strip .actions {
            grid-column: 3;
            display: flex;
            justify-content: flex-end;
        }

        /* Window Controls mimic */
        .window-controls {
            display: flex;
            gap: 2px;
        }
        .win-btn {
            width: 21px;
            height: 21px;
            border: 1px solid white;
            border-radius: 3px;
            background: linear-gradient(to bottom, #D6DFF7 0%, #FFFFFF 100%);
            color: black;
            font-size: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            cursor: default;
            box-shadow: inset 1px 1px 0 white;
        }
        .win-btn.close {
            background: #E04343; /* Red-ish */
            color: white;
            border-color: #FFFFFF;
        }

        .layout {
            display: grid;
            grid-template-columns: 180px 1fr 200px; /* Fixed widths like old web */
            gap: 0; /* No gap, borders handle separation */
            align-items: stretch;
            flex: 1;
            background: #ECE9D8; /* Beige window background */
            border: 3px solid var(--xp-border);
            border-top: none; /* Connect to title bar */
            box-shadow: 2px 2px 5px rgba(0,0,0,0.3);
            padding: 2px;
        }

        /* Sidebar (Explorer Bar Style) */
        .sidebar {
            background: linear-gradient(to right, #7BA2E7 0%, #6375D6 100%); /* Sidebar container blue */
            padding: 10px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            overflow-y: auto;
        }

        .sidebar nav {
            background: transparent;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .xp-panel {
            background: white;
            border-radius: 3px;
            overflow: hidden;
        }

        .xp-panel-header {
            background: linear-gradient(to right, #FFFFFF 0%, #C6D3F7 100%);
            padding: 5px 10px;
            font-weight: bold;
            color: #215DC6;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-radius: 3px 3px 0 0;
        }
        
        .xp-panel-header::after {
            content: '︽';
            font-size: 10px;
            color: #215DC6;
            border: 1px solid rgba(255,255,255,0.5);
            border-radius: 50%;
            width: 16px;
            height: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: -1px -1px 2px rgba(0,0,0,0.1);
        }

        .xp-panel-content {
            background: #D6DFF7;
            padding: 10px;
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .sidebar .nav-item {
            display: flex;
            align-items: center;
            gap: 5px;
            color: #215DC6;
            text-decoration: none;
            font-size: 11px;
            padding: 2px 0;
        }

        .sidebar .nav-item:hover {
            text-decoration: underline;
            color: #428EFF;
        }
        
        .sidebar .nav-item span:first-child {
            /* Icon styling */
            filter: drop-shadow(1px 1px 0 rgba(0,0,0,0.2));
        }

        /* Main Area */
        .main-area {
            background: white;
            border: 1px solid #7F9DB9; /* Inset border look */
            margin: 5px;
            padding: 15px;
            overflow-y: auto;
            box-shadow: inset 2px 2px 2px rgba(0,0,0,0.05);
        }

        /* Grid de Tarjetas (Icons View) */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
            gap: 20px;
            align-content: start;
        }

        .card {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            text-decoration: none;
            color: black;
            padding: 5px;
            border: 1px solid transparent;
        }

        .card:hover {
            background-color: #E8F1FC; /* Selection blue light */
            border: 1px solid #7DA2CE;
            border-radius: 3px;
        }

        .card-icon {
            font-size: 32px;
            margin-bottom: 5px;
            filter: drop-shadow(2px 2px 2px rgba(0,0,0,0.2));
            /* Remove previous gradients */
            background: none;
            width: auto;
            height: auto;
            box-shadow: none;
            border-radius: 0;
        }

        .card h3 {
            margin: 0;
            font-size: 11px;
            font-weight: normal;
            color: black;
        }

        .card p, .badge {
            display: none; /* Hide details in icon view */
        }

        /* Theme Toggle (Start Button Style) */
        .theme-toggle {
            background: linear-gradient(to bottom, #388E3C 0%, #2E7D32 100%);
            color: white;
            border: 2px solid #1B5E20;
            border-radius: 10px 0 10px 0; /* Weird XP shape approx */
            padding: 3px 15px;
            font-weight: bold;
            font-style: italic;
            cursor: pointer;
            font-family: "Tahoma", sans-serif;
            box-shadow: inset 1px 1px 0 rgba(255,255,255,0.4);
            text-shadow: 1px 1px 0 rgba(0,0,0,0.3);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .theme-toggle .icon {
            font-style: normal;
            filter: drop-shadow(1px 1px 0 rgba(0,0,0,0.3));
        }

        .theme-toggle:active {
            background: #1B5E20;
            box-shadow: inset 2px 2px 5px rgba(0,0,0,0.5);
        }

        /* Panel lateral derecho (Details Pane) */
        .aside {
            background: #ECE9D8;
            padding: 10px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .panel {
            background: white;
            border: 1px solid #D4D0C8;
            padding: 2px;
            box-shadow: inset 1px 1px 0 #808080, inset -1px -1px 0 white;
        }

        .panel h4 {
            background: #0058EE; /* Active Title Bar Color */
            background: linear-gradient(to right, #0058EE 0%, #3593FF 100%);
            color: white;
            margin: 0;
            padding: 3px 5px;
            font-size: 11px;
            font-weight: bold;
        }

        .panel .item {
            padding: 5px;
            border-bottom: 1px solid #ECE9D8;
            font-size: 11px;
        }

        .mini-calendar {
            padding: 10px;
            text-align: center;
            background: white;
            font-size: 11px;
        }

        .file-list {
            list-style: none;
            padding: 5px;
            margin: 0;
        }

        .file-list li {
            padding: 2px 0;
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 11px;
        }
        
        .file-list li::before {
            content: '📄';
        }

        /* Responsivo */
        @media (max-width: 800px) {
            .layout {
                grid-template-columns: 1fr;
                height: auto;
            }
            .dashboard-shell {
                height: auto;
            }
            .sidebar {
                display: none; /* Hide sidebar on small screens like XP folders sometimes did */
            }
        }

        /* Estilos para las nuevas secciones */
        .content-section {
            animation: fadeIn 0.3s;
        }
        
        .content-section h2 {
            color: #0058EE;
            border-bottom: 1px solid #D4D0C8;
            padding-bottom: 5px;
            margin-top: 0;
            font-family: "Trebuchet MS", sans-serif;
            font-size: 16px;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        /* Video Overlay Styles */
        .video-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            z-index: 2000;
            display: flex;
            justify-content: center;
            align-items: center;
            backdrop-filter: blur(2px);
        }

        .video-container {
            position: relative;
            width: 80%;
            max-width: 800px;
            background: black;
            border: 3px solid var(--xp-border);
            box-shadow: 0 0 20px rgba(0,0,0,0.5);
            border-radius: 3px;
        }

        /* Repository Box */
        .repo-box {
            background: white;
            border: 1px solid #7F9DB9;
            padding: 10px;
            margin: 10px 0;
            height: 200px;
            overflow-y: auto;
        }

        /* Remove animations from window controls */
        .win-btn:hover, .win-btn:active, .win-btn:focus {
            transform: none !important;
            transition: none !important;
            animation: none !important;
        }

        /* XP Blue Button */
        .xp-blue-btn {
            display: inline-block;
            padding: 5px 20px;
            text-decoration: none;
            border: 1px solid #003c74;
            border-radius: 3px;
            background: linear-gradient(to bottom, #0058ee 0%, #3593ff 100%);
            color: white;
            font-family: "Tahoma", sans-serif;
            font-size: 11px;
            cursor: pointer;
            box-shadow: inset 1px 1px 0 rgba(255,255,255,0.3);
            text-align: center;
        }
        .xp-blue-btn:hover {
            filter: brightness(1.1);
        }