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

        body {
            font-family: 'Arial', sans-serif;
            background: linear-gradient(135deg, #224975 0%, #1B3B5F 100%);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 1600px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }

        .header {
            text-align: center;
            margin-bottom: 30px;
            background: linear-gradient(45deg, #265081, #1B3B5F);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
.header h1{
    font-size: 4rem;
}
        .section {
            margin-bottom: 30px;
            padding: 20px;
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .section h3 {
            color: #1B3B5F;
            margin-bottom: 15px;
            border-bottom: 2px solid #1B3B5F;
            padding-bottom: 5px;
        }

        .form-group {
            margin-bottom: 15px;
        }

        label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
            color: #333;
        }

        input, select, textarea {
            width: 100%;
            padding: 10px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 14px;
            transition: border-color 0.3s ease;
        }

        input:focus, select:focus, textarea:focus {
            outline: none;
            border-color: #1B3B5F;
        }

        .btn {
            background: linear-gradient(45deg, #1B3B5F, #1B3B5F);
            color: white;
            padding: 12px 24px;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-size: 16px;
            transition: transform 0.3s ease;
        }

        .btn:hover {
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: #6c757d;
        }

        .btn-success {
            background: #28a745;
        }

        .table-container {
            overflow-x: auto;
            margin-top: 20px;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 15px;
            background: white;
            border-radius: 8px;
            overflow: hidden;
        }

        th, td {
            padding: 8px;
            text-align: right;
            border-bottom: 1px solid #ddd;
            font-size: 11px;
        }

        th {
            background: #1B3B5F;
            color: white;
            font-weight: bold;
        }

        .month-header {
            writing-mode: vertical-lr;
            text-orientation: mixed;
            min-width: 45px;
        }

        .row-label {
            text-align: left;
            font-weight: bold;
            background: #f8f9fa;
            min-width: 200px;
        }

        .positive {
            color: #28a745;
        }

        .negative {
            color: #dc3545;
        }

        .warning {
            background-color: #fff3cd;
            color: #856404;
        }

        .danger {
            background-color: #f8d7da;
            color: #721c24;
        }

        .alerts {
            margin-top: 20px;
        }

        .alert {
            padding: 15px;
            margin-bottom: 10px;
            border-radius: 8px;
            border-left: 4px solid;
        }

        .alert-warning {
            background-color: #fff3cd;
            border-color: #ffc107;
            color: #856404;
        }

        .alert-danger {
            background-color: #f8d7da;
            border-color: #dc3545;
            color: #721c24;
        }

        .alert-info {
            background-color: #d1ecf1;
            border-color: #17a2b8;
            color: #0c5460;
        }

        .form-row {
            display: flex;
            gap: 15px;
        }

        .form-row .form-group {
            flex: 1;
        }

        .balance-item {
            background: #f8f9fa;
            padding: 10px;
            border-radius: 8px;
            margin-bottom: 8px;
            border-left: 4px solid #1B3B5F;
            font-size: 12px;
        }

        .nature-select {
            width: 120px;
            font-size: 11px;
            padding: 4px;
        }

        .summary-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            margin-bottom: 20px;
        }

        .summary-card {
            background: white;
            padding: 15px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .summary-card h4 {
            color: #1B3B5F;
            margin-bottom: 8px;
            font-size: 14px;
        }

        .summary-card .value {
            font-size: 18px;
            font-weight: bold;
            color: #333;
        }

        .import-section {
            background: #e3f2fd;
            padding: 20px;
            border-radius: 12px;
            margin-bottom: 20px;
        }

        .data-preview {
            max-height: 300px;
            overflow-y: auto;
            background: white;
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 10px;
            margin-top: 10px;
        }

        .balance-analysis {
            background: #f8f9fc;
            padding: 15px;
            border-radius: 8px;
            margin-top: 15px;
        }
.action-buttons {
    display: none;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.action-buttons .btn {
    flex: 1;
    min-width: 200px;
}
        .tabs {
            display: flex;
            border-bottom: 2px solid #ddd;
            margin-bottom: 20px;
        }

        .tab {
            padding: 10px 20px;
            cursor: pointer;
            border: none;
            background: none;
            font-size: 14px;
            color: #666;
            transition: all 0.3s ease;
        }

        .tab.active {
            color: #1B3B5F;
            border-bottom: 2px solid #1B3B5F;
            font-weight: bold;
        }

        .tab-content {
            display: none;
        }

        .tab-content.active {
            display: block;
        }

        .progress-bar {
            width: 100%;
            height: 20px;
            background: #f0f0f0;
            border-radius: 10px;
            overflow: hidden;
            margin: 10px 0;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(45deg, #1B3B5F, #1B3B5F);
            transition: width 0.3s ease;
        }