/* 危険日・安全日計算機のスタイル */

.warning-notice {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: white;
    padding: 20px;
    border-radius: 12px;
    margin: 20px 0;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.warning-notice i {
    font-size: 24px;
    margin-top: 2px;
    flex-shrink: 0;
}

.warning-content h3 {
    margin: 0 0 8px 0;
    font-size: 1.2em;
    font-weight: 600;
}

.warning-content p {
    margin: 0;
    line-height: 1.5;
}

/* 入力セクション */
.input-section {
    background: #f8f9ff;
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 20px;
    border: 2px solid #e1e8ff;
}

.input-section h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.3em;
}

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

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #34495e;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1em;
    transition: border-color 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.input-with-unit {
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-with-unit input {
    flex: 1;
}

.unit {
    background: #ecf0f1;
    padding: 12px 15px;
    border-radius: 8px;
    font-weight: 600;
    color: #2c3e50;
}

.input-group small {
    display: block;
    margin-top: 5px;
    color: #7f8c8d;
    font-size: 0.9em;
}

/* 結果セクション */
.result-section {
    margin-top: 30px;
}

.period-info {
    margin-bottom: 30px;
}

.period-info h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.4em;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.info-item {
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.info-item:hover {
    transform: translateY(-3px);
}

.info-item.danger {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: white;
}

.info-item.ovulation {
    background: linear-gradient(135deg, #ff9ff3, #f368e0);
    color: white;
}

.info-item.safe {
    background: linear-gradient(135deg, #51cf66, #40c057);
    color: white;
}

.info-item.next-period {
    background: linear-gradient(135deg, #74c0fc, #339af0);
    color: white;
}

.info-item h4 {
    margin: 0 0 15px 0;
    font-size: 1.1em;
    font-weight: 600;
}

.date-range, .date-value {
    font-size: 1.3em;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.info-item .description {
    margin: 0;
    font-size: 0.9em;
    opacity: 0.9;
}

/* カレンダーセクション */
.calendar-section {
    background: #f8f9ff;
    padding: 25px;
    border-radius: 12px;
    border: 2px solid #e1e8ff;
    margin-bottom: 30px;
}

.calendar-section h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.3em;
}

.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    margin-bottom: 20px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9em;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.calendar-day:hover {
    transform: scale(1.1);
}

.calendar-day.header {
    background: #34495e;
    color: white;
    font-weight: 700;
    cursor: default;
}

.calendar-day.header:hover {
    transform: none;
}

.calendar-day.other-month {
    color: #bdc3c7;
    background: #ecf0f1;
}

.calendar-day.today {
    border-color: #2c3e50;
    font-weight: 700;
}

.calendar-day.menstrual {
    background: #e74c3c;
    color: white;
}

.calendar-day.danger {
    background: #ff6b6b;
    color: white;
}

.calendar-day.ovulation {
    background: #f368e0;
    color: white;
}

.calendar-day.safe {
    background: #51cf66;
    color: white;
}

.calendar-day.normal {
    background: #ecf0f1;
    color: #2c3e50;
}

/* カレンダー凡例 */
.calendar-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
    font-weight: 600;
}

.color-box {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    flex-shrink: 0;
}

.color-box.menstrual {
    background: #e74c3c;
}

.color-box.danger {
    background: #ff6b6b;
}

.color-box.ovulation {
    background: #f368e0;
}

.color-box.safe {
    background: #51cf66;
}

/* 情報セクション */
.info-section {
    background: white;
    border: 2px solid #e1e8ff;
    border-radius: 12px;
    padding: 30px;
    margin-top: 30px;
}

.info-section h3 {
    color: #2c3e50;
    border-bottom: 3px solid #3498db;
    padding-bottom: 10px;
    margin-bottom: 25px;
    font-size: 1.4em;
}

.info-section h4 {
    color: #34495e;
    margin: 25px 0 15px 0;
    font-size: 1.2em;
}

.info-section h5 {
    color: #34495e;
    margin: 15px 0 8px 0;
    font-size: 1em;
}

.limitations, .contraception-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.limitation-item, .method-item {
    background: #f8f9ff;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.limitation-item h5, .method-item h5 {
    margin-top: 0;
    color: #2c3e50;
}

.caution-list {
    background: #fff5f5;
    border: 2px solid #ffebee;
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
}

.caution-list li {
    margin-bottom: 8px;
    color: #c62828;
    font-weight: 500;
}

/* ボタンスタイル */
.primary-button {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.primary-button:hover {
    background: linear-gradient(135deg, #2980b9, #3498db);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

.primary-button:active {
    transform: translateY(0);
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .calendar {
        gap: 4px;
    }
    
    .calendar-day {
        font-size: 0.8em;
    }
    
    .calendar-legend {
        justify-content: flex-start;
    }
    
    .legend-item {
        font-size: 0.8em;
    }
    
    .limitations, .contraception-methods {
        grid-template-columns: 1fr;
    }
    
    .warning-notice {
        flex-direction: column;
        text-align: center;
    }
    
    .input-section, .calendar-section, .info-section {
        padding: 20px;
    }
}