* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
            padding: 20px;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
        }

        header {
            text-align: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 2px solid #3498db;
        }

        h1 {
            color: #2c3e50;
            margin-bottom: 10px;
        }

        .subtitle {
            color: #7f8c8d;
            font-size: 1.1rem;
        }

        .app-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 30px;
            margin-bottom: 30px;
        }

        @media (max-width: 1024px) {
            .app-grid {
                grid-template-columns: 1fr;
            }
        }

        .card {
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            padding: 25px;
            margin-bottom: 20px;
        }

        .card h2 {
            color: #3498db;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid #eee;
        }

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

        label {
            display: block;
            margin-bottom: 5px;
            font-weight: 600;
            color: #555;
        }

        input,
        select,
        button {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
        }

        button {
            background-color: #3498db;
            color: white;
            border: none;
            cursor: pointer;
            font-weight: 600;
            transition: background-color 0.3s;
        }

        button:hover {
            background-color: #2980b9;
        }

        .btn-success {
            background-color: #2ecc71;
        }

        .btn-success:hover {
            background-color: #27ae60;
        }

        .btn-danger {
            background-color: #e74c3c;
        }

        .btn-danger:hover {
            background-color: #c0392b;
        }

        .group-list {
            list-style-type: none;
            max-height: 300px;
            overflow-y: auto;
        }

        .group-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 15px;
            margin-bottom: 10px;
            background-color: #f8f9fa;
            border-radius: 5px;
            border-left: 4px solid #3498db;
        }

        .group-name {
            font-weight: 600;
        }

        .group-stats {
            font-size: 0.85rem;
            color: #7f8c8d;
        }

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

        table {
            width: 100%;
            border-collapse: collapse;
            min-width: 800px;
        }

        th,
        td {
            padding: 12px 15px;
            text-align: center;
            border-bottom: 1px solid #eee;
        }

        th {
            background-color: #3498db;
            color: white;
            font-weight: 600;
            position: sticky;
            top: 0;
        }

        tr:hover {
            background-color: #f9f9f9;
        }

        .week-header {
            background-color: #2c3e50;
        }

        .charge-input {
            width: 70px;
            padding: 5px;
            text-align: center;
            border: 1px solid #ddd;
            border-radius: 3px;
        }

        .proposal-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        @media (max-width: 768px) {
            .proposal-form {
                grid-template-columns: 1fr;
            }
        }

        .alert {
            padding: 15px;
            border-radius: 5px;
            margin-bottom: 20px;
            display: none;
        }

        .alert-success {
            background-color: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        .alert-error {
            background-color: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        .status-indicator {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-right: 8px;
        }

        .status-ok {
            background-color: #2ecc71;
        }

        .status-warning {
            background-color: #f39c12;
        }

        .status-over {
            background-color: #e74c3c;
        }

        .group-selector {
            margin-bottom: 20px;
        }

        .group-selector select {
            max-width: 300px;
        }

        .proposal-list {
            margin-top: 20px;
        }

        .proposal-item {
            padding: 15px;
            margin-bottom: 10px;
            border-radius: 5px;
            background-color: #f8f9fa;
            border-left: 4px solid #f39c12;
        }

        .proposal-accepted {
            border-left-color: #2ecc71;
        }

        .proposal-rejected {
            border-left-color: #e74c3c;
        }

        .proposal-details {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .proposal-title {
            font-weight: 600;
            color: #2c3e50;
        }

        .proposal-actions {
            display: flex;
            gap: 10px;
        }

        .proposal-actions button {
            width: auto;
            padding: 8px 15px;
            font-size: 0.9rem;
        }

        .summary {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }

        .summary-item {
            background-color: #f8f9fa;
            padding: 15px;
            border-radius: 5px;
            text-align: center;
        }

        .summary-value {
            font-size: 1.8rem;
            font-weight: 700;
            color: #3498db;
            margin: 10px 0;
        }

        .sync-notice {
            background-color: #e8f4fc;
            padding: 10px;
            border-radius: 5px;
            margin-top: 10px;
            font-size: 0.9rem;
            color: #2c3e50;
            text-align: center;
        }

        footer {
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #eee;
            color: #7f8c8d;
            font-size: 0.9rem;
        }