* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 20px;
}

.intro {
    text-align: center;
    margin-bottom: 30px;
    color: #666;
}

.calculator {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 25px;
}

.form-section {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.form-section h2 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #2980b9;
}

.input-group {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
}

.input-group label {
    width: 40%;
    font-size: 0.95rem;
}

.input-group input {
    width: calc(60% - 40px);
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.95rem;
}

.unit {
    width: 30px;
    display: inline-block;
    text-align: left;
    margin-left: 10px;
    color: #666;
    white-space: nowrap;
}

button {
    display: block;
    width: 100%;
    padding: 12px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

#results {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid #eee;
}

#results.hidden {
    display: none;
}

#results h2 {
    text-align: center;
    margin-bottom: 15px;
}

#result-summary {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.summary-item {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.summary-label {
    font-weight: bold;
    min-width: 160px;
}

.explanation {
    display: block;
    width: 100%;
    margin-top: 5px;
    font-size: 0.9rem;
    color: #666;
    padding-left: 160px;
}

.success {
    color: #27ae60;
}

.warning {
    color: #e74c3c;
}

/* Phase markers for explanation */
.phase-markers {
    display: flex;
    flex-wrap: wrap;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px dashed #ddd;
}

.phase-marker {
    display: flex;
    align-items: center;
    margin-right: 20px;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 6px;
}

.phase-marker.accumulation .dot {
    background-color: #3498db;
}

.phase-marker.retirement .dot {
    background-color: #e74c3c;
}

.phase-marker.pension .dot {
    background-color: #2ecc71;
}

#chart-container {
    margin-bottom: 25px;
    height: 300px;
    width: 100%;
    overflow: hidden;
}

/* Remove the minimum width constraint */
#balance-chart {
    width: 100% !important;
    height: 100% !important;
}

/* Table container for scrollable tables */
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    font-size: 0.95rem;
}

.result-table th, 
.result-table td {
    padding: 10px;
    text-align: right;
    border-bottom: 1px solid #eee;
}

.result-table th {
    background-color: #f5f5f5;
    font-weight: bold;
    text-align: center;
}

.result-table tr:hover {
    background-color: #f9f9f9;
}

/* Add colors to table rows based on phase */
.result-table tr.accumulation {
    background-color: rgba(52, 152, 219, 0.05);
}

.result-table tr.retirement {
    background-color: rgba(231, 76, 60, 0.05);
}

/* Highlight the retirement year */
.result-table tr.retirement:first-of-type {
    border-top: 2px solid #e74c3c;
    font-weight: bold;
}

/* Highlight years with important changes */
.result-table tr.retirement td:first-child {
    position: relative;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .calculator {
        padding: 15px;
    }
    
    .input-group {
        flex-direction: row;
        flex-wrap: nowrap;
        align-items: center;
        margin-bottom: 10px;
    }
    
    .input-group label {
        width: 40%;
        margin-bottom: 0;
        font-size: 0.9rem;
    }
    
    .input-group input {
        width: calc(60% - 30px);
        margin-bottom: 0;
        padding: 6px;
    }
    
    .unit {
        width: 25px;
        display: inline-block;
        text-align: left;
        margin-left: 5px;
        font-size: 0.9rem;
    }
    
    #chart-container {
        height: 200px;
    }
    
    /* Remove this min-width setting */
    #balance-chart {
        min-width: auto;
    }
    
    .result-table {
        font-size: 0.75rem;
        min-width: 500px; /* Ensure table doesn't shrink too much */
    }
    
    .result-table th, 
    .result-table td {
        padding: 6px 4px;
    }
    
    .explanation {
        padding-left: 0;
    }
    
    .summary-label {
        min-width: 130px;
    }
}

/* Add additional tweaks for very small screens */
@media (max-width: 480px) {
    h1 {
        font-size: 1.4rem;
    }
    
    .form-section h2 {
        font-size: 1.1rem;
    }
    
    .input-group label {
        font-size: 0.85rem;
    }
    
    .input-group input {
        width: calc(60% - 25px);
        padding: 4px;
        font-size: 0.9rem;
    }
    
    .unit {
        width: 20px;
        display: inline-block;
        text-align: left;
        margin-left: 5px;
        font-size: 0.85rem;
    }
    
    #result-summary {
        padding: 10px;
    }
    
    .phase-marker {
        font-size: 0.8rem;
    }
}