:root {
            --primary-color: #2196f3;
            --primary-dark: #1769aa;
            --accent-color: #f44336;
            --accent-dark: #d32f2f;
            --success-color: #4caf50;
            --success-dark: #388e3c;
            --warning-color: #ff9800;
            --warning-dark: #e65100;
            --neutral-color: #607d8b;
            --neutral-dark: #455a64;
            --text-color: #222;
            --light-gray: #f4f6fb;
            --border-radius: 8px;
            --border-color: #222;
            --shadow-small: 0 2px 8px rgba(0, 0, 0, 0.08);
            --shadow-medium: 0 4px 14px rgba(0, 0, 0, 0.11);
            --shadow-large: 0 6px 20px rgba(0, 0, 0, 0.14);
            --transition-fast: 0.2s;
            --transition-medium: 0.3s;
        }
        
        body { 
            font-family: 'Segoe UI', Arial, sans-serif; 
            background: var(--light-gray); 
            margin: 0; 
            color: var(--text-color);
        }
        
        .container { 
            max-width: 1200px; 
            margin: 40px auto; 
            background: #fff; 
            border-radius: var(--border-radius); 
            box-shadow: var(--shadow-medium); 
            padding: 32px; 
            position: relative;
        }
        
        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .home-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            text-decoration: none;
            transition: transform var(--transition-fast), background-color var(--transition-fast);
            box-shadow: var(--shadow-small);
        }
        
        .home-link:hover {
            background: var(--primary-dark);
            transform: scale(1.1);
        }
        
        h2 { 
            margin: 0 0 24px 0; 
            color: var(--text-color); 
            letter-spacing: 1px; 
            font-weight: 600;
        }
        
        .divider {
            border: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(33, 150, 243, 0.5), transparent);
            margin: 30px 0;
            position: relative;
        }
        
        .divider::before {
            content: "";
            position: absolute;
            top: -4px;
            left: 50%;
            width: 40px;
            height: 8px;
            background: var(--primary-color);
            border-radius: 4px;
            transform: translateX(-50%);
        }
        
        table { 
            width: 100%; 
            border-collapse: collapse; 
            margin-bottom: 20px; 
            box-shadow: var(--shadow-small); 
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        
        th, td { 
            padding: 16px 14px; 
            border: 1px solid var(--border-color); 
            text-align: left; 
        }
        
        th { 
            background: linear-gradient(90deg, #181818 80%, #444 100%); 
            color: #fff; 
            position: relative; 
            font-weight: 500;
        }
        
        tr:nth-child(even) { 
            background: #f8f9fa; 
        }
        
        tr:hover {
            background-color: rgba(33, 150, 243, 0.05);
        }
        
        .copy-btn { 
            background: #333; 
            color: #fff; 
            border: none; 
            padding: 7px 16px; 
            border-radius: var(--border-radius); 
            cursor: pointer; 
            margin-left: 10px; 
            transition: background var(--transition-fast), transform var(--transition-fast); 
        }
        
        .copy-btn:hover { 
            background: #444; 
            transform: scale(1.07);
        }
        
        .action-btn { 
            border: none; 
            padding: 8px 14px; 
            border-radius: var(--border-radius); 
            color: #fff; 
            cursor: pointer; 
            margin-right: 5px; 
            transition: background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast); 
        }
        
        .action-btn.used { 
            background: var(--success-color); 
        }
        
        .action-btn.partial { 
            background: var(--warning-color); 
        }
        
        .action-btn.dead { 
            background: var(--accent-color); 
        }
        
        .action-btn.reset { 
            background: var(--neutral-color); 
        }
        
        .action-btn.used:hover { 
            background: var(--success-dark); 
            box-shadow: 0 2px 8px rgba(76, 175, 80, 0.25); 
            transform: scale(1.05);
        }
        
        .action-btn.partial:hover { 
            background: var(--warning-dark); 
            box-shadow: 0 2px 8px rgba(255, 152, 0, 0.25); 
            transform: scale(1.05);
        }
        
        .action-btn.dead:hover { 
            background: var(--accent-dark); 
            box-shadow: 0 2px 8px rgba(244, 67, 54, 0.25); 
            transform: scale(1.05);
        }
        
        .action-btn.reset:hover { 
            background: var(--neutral-dark); 
            box-shadow: 0 2px 8px rgba(96, 125, 139, 0.25); 
            transform: scale(1.05);
        }
        
        .search-form { 
            display: flex; 
            flex-wrap: wrap; 
            gap: 10px; 
            margin-bottom: 24px; 
            align-items: stretch; 
        }
        
        .search-input, 
        .search-form select, 
        .search-form input[type="number"] { 
            padding: 10px 14px; 
            border: 1px solid #bbb; 
            border-radius: var(--border-radius); 
            font-size: 16px; 
            flex-grow: 1;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        
        .search-input:focus, 
        .search-form select:focus, 
        .search-form input[type="number"]:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.25);
            outline: none;
        }
        
        .range-inputs {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-grow: 1;
        }
        
        .range-inputs input {
            flex-grow: 1;
            padding: 10px 14px; 
            border: 1px solid #bbb; 
            border-radius: var(--border-radius); 
            font-size: 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        
        .range-inputs input:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.25);
            outline: none;
        }
        
        .search-btn,
        .reset-filters-btn { 
            padding: 10px 18px; 
            color: #fff; 
            border: none; 
            border-radius: var(--border-radius); 
            cursor: pointer; 
            transition: background var(--transition-fast), transform var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
        }
        
        .search-btn {
            background: #181818; 
        }
        
        .search-btn:hover { 
            background: #333; 
            transform: translateY(-2px);
        }
        
        .reset-filters-btn {
            background: var(--accent-color);
        }
        
        .reset-filters-btn:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
        }
        
        .pagination { 
            text-align: center; 
            margin-top: 30px;
        }
        
        .pagination a, 
        .pagination span { 
            display: inline-block; 
            padding: 8px 16px; 
            margin: 0 2px; 
            border: 1px solid var(--border-color); 
            border-radius: var(--border-radius); 
            color: var(--text-color); 
            text-decoration: none; 
            transition: background var(--transition-medium); 
        }
        
        .pagination a:hover { 
            background: #181818; 
            color: #fff; 
        }
        
        .pagination .active { 
            background: #222; 
            color: #fff; 
            pointer-events: none; 
        }
        
        .import-btn { 
            padding: 10px 18px; 
            background: var(--primary-color); 
            color: #fff; 
            border: none; 
            border-radius: var(--border-radius); 
            cursor: pointer; 
            margin-bottom: 24px; 
            transition: background var(--transition-fast), transform var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        .import-btn:hover { 
            background: var(--primary-dark); 
            transform: translateY(-2px);
        }
        
        .total-accounts { 
            font-weight: bold; 
            font-size: 16px; 
            margin-bottom: 20px; 
            background: linear-gradient(90deg, rgba(33, 150, 243, 0.1), transparent);
            padding: 12px 20px;
            border-radius: var(--border-radius);
            border-left: 4px solid var(--primary-color);
            display: inline-block;
        }
        
        .ep-used { 
            color: var(--success-color); 
            text-decoration: line-through; 
        }
        
        .ep-partial { 
            color: var(--warning-color); 
            text-decoration: line-through; 
        }
        
        .ep-dead { 
            color: var(--accent-color); 
            text-decoration: line-through; 
        }
        
        .ep-active { 
            color: #333; 
            text-decoration: none; 
        }
        
        .sort-link { 
            color: #fff; 
            text-decoration: none; 
            display: inline-flex; 
            align-items: center; 
            gap: 5px;
        }
        
        .sort-link:hover { 
            text-decoration: underline; 
        }
        
        .file-input-container {
            position: relative;
            overflow: hidden;
            display: inline-block;
            margin-right: 10px;
        }
        
        .file-input-container input[type=file] {
            position: absolute;
            font-size: 100px;
            right: 0;
            top: 0;
            opacity: 0;
            cursor: pointer;
        }
        
        .file-input-label {
            display: inline-block;
            padding: 10px 18px;
            background: #555;
            color: white;
            border-radius: var(--border-radius);
            cursor: pointer;
            transition: background var(--transition-fast);
        }
        
        .file-input-label:hover {
            background: #666;
        }
        
        .file-name {
            margin-left: 10px;
            font-style: italic;
        }
        
        @media (max-width: 900px) {
            .container { padding: 16px; }
            table, th, td { font-size: 14px; }
        }
        
        @media (max-width: 700px) {
            .container { padding: 8px; }
            th, td { padding: 8px 4px; }
            .search-form { flex-direction: column; gap: 12px; align-items: stretch; }
            .search-input, select, .search-btn, input[type="number"] { width: 100%; box-sizing: border-box; }
            .range-inputs { flex-direction: column; width: 100%; }
            .button-group { display: flex; gap: 10px; }
            .button-group button { flex: 1; }
        }