.container {
            max-width: 1000px;
            margin: 20px auto;
            padding: 20px;
            font-family: Arial, sans-serif;
            background-color: #f9f9f9;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .days-header {
            text-align: center;
            margin-bottom: 30px;
            color: #333;
            font-size: 24px;
            font-weight: bold;
        }

        .date-section {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 20px;
        }

        .date-group {
            width: 100%;
            background: white;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid #ddd;
            box-sizing: border-box;
        }

        .date-group h3 {
            margin: 0 0 15px 0;
            color: #333;
            font-size: 16px;
            font-weight: bold;
        }

        .date-inputs {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }

        .date-inputs label {
            font-weight: bold;
            color: #555;
            min-width: 40px;
        }

        .date-inputs input {
            padding: 8px;
            border: 1px solid #ccc;
            border-radius: 4px;
            width: 60px;
            text-align: center;
        }

        .date-inputs input[type="date"] {
            width: 140px;
        }
        .today-btn {
            background: none;
            border: none;
            color: #007bff;
            cursor: pointer;
            text-decoration: underline;
            font-size: 14px;
            margin-top: 5px;
        }

        .today-btn:hover {
            color: #0056b3;
        }

        .options {
            margin: 20px 0;
            padding: 15px;
            background: white;
            border-radius: 8px;
            border: 1px solid #ddd;
        }

        .checkbox-group {
            margin-bottom: 10px;
        }

        .checkbox-group input[type="checkbox"] {
            margin-right: 8px;
        }

        .links {
            margin-top: 10px;
        }

        .links a {
            color: #007bff;
            text-decoration: none;
            margin-right: 15px;
            font-size: 14px;
        }

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

        .calculate-btn {
            background: #8bc34a;
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            margin: 20px 0;
        }

        .calculate-btn:hover {
            background: #7cb342;
        }

        .result-section {
            display: flex;
            gap: 20px;
            margin-top: 20px;
        }

        .result-main {
            flex: 2;
            background: #e8f5e8;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid #c8e6c9;
        }

        .result-alternative {
            flex: 1;
            background: white;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid #ddd;
        }

        .result-main h4 {
            margin: 0 0 15px 0;
            font-size: 18px;
            color: #2e7d32;
        }

        .result-details {
            margin-bottom: 15px;
            color: #555;
            line-height: 1.6;
        }

        .result-alternative h4 {
            margin: 0 0 15px 0;
            font-size: 16px;
            color: #333;
        }

        .alternative-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .alternative-list li {
            padding: 5px 0;
            color: #555;
            border-bottom: 1px solid #eee;
        }

        .alternative-list li:last-child {
            border-bottom: none;
        }

        .hidden {
            display: none;
        }

        @media (max-width: 768px) {
            .result-section {
                flex-direction: column;
            }
            
            .date-inputs {
                flex-direction: column;
                align-items: stretch;
                gap: 15px;
            }
            
            .date-inputs > span {
                display: none;
            }
            
            .date-input-row {
                display: flex;
                align-items: center;
                gap: 10px;
            }
            
            .date-inputs label {
                min-width: 60px;
                font-size: 16px;
            }
            
            .date-inputs input {
                flex: 1;
                width: auto;
                min-width: 120px;
                padding: 12px;
                font-size: 16px;
                border-radius: 6px;
            }
            
            .date-inputs input[type="date"] {
                width: auto;
                flex: 1;
                min-width: 150px;
            }
            .container {
                margin: 10px;
                padding: 15px;
            }
            
            .date-group {
                padding: 15px;
            }
            
            .today-btn {
                font-size: 16px;
                padding: 8px 0;
            }
        }