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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    margin-bottom: 30px;
    padding: 30px 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    animation: fadeInUp 0.8s ease-out;
}

.header h1 {
    color: #2c3e50;
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.header p {
    color: #7f8c8d;
    font-size: 1.1em;
}

.chat-container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.chat-messages {
    padding: 20px;
    min-height: 400px;
    max-height: 500px;
    overflow-y: auto;
}

.message {
    margin-bottom: 20px;
    animation: messageSlide 0.5s ease-out;
}

.bot-message .message-content {
    background: #f8f9fa;
    border-left: 4px solid #3498db;
    padding: 15px 20px;
    border-radius: 10px;
    max-width: 80%;
}

.user-message .message-content {
    background: #3498db;
    color: white;
    padding: 15px 20px;
    border-radius: 10px;
    max-width: 80%;
    margin-left: auto;
}

.input-area {
    padding: 20px;
    border-top: 1px solid #eee;
    background: #f8f9fa;
}

.question-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.question-container label {
    font-weight: 600;
    color: #2c3e50;
    font-size: 1.1em;
}

.question-container input,
.question-container select {
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1em;
    transition: border-color 0.3s ease;
}

.question-container input:focus,
.question-container select:focus {
    outline: none;
    border-color: #3498db;
}

.options-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    margin-top: 10px;
}

.option-btn {
    padding: 12px 20px;
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    font-size: 1em;
}

.option-btn:hover {
    background: #f0f8ff;
    border-color: #3498db;
    transform: translateY(-2px);
}

.option-btn.selected {
    background: #3498db;
    color: white;
    border-color: #3498db;
}

#nextBtn {
    padding: 12px 30px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: 600;
    transition: all 0.3s ease;
    align-self: flex-end;
}

#nextBtn:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

#nextBtn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
}

.result-container {
    animation: fadeInUp 0.8s ease-out;
}

.result-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 30px 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.result-header h2 {
    color: #2c3e50;
    font-size: 2em;
    font-weight: 700;
}

.loan-result {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: 40px;
    margin-bottom: 30px;
    text-align: center;
}

.loan-amount h3 {
    color: #2c3e50;
    font-size: 1.5em;
    margin-bottom: 20px;
}

.amount-display {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 15px;
    margin: 20px 0;
    font-size: 3em;
    font-weight: 700;
    animation: pulse 2s infinite;
}

.loan-amount p {
    font-size: 1.2em;
    color: #7f8c8d;
}

.property-recommendations,
.land-recommendations {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: 30px;
    margin-bottom: 30px;
}

.property-recommendations h3,
.land-recommendations h3 {
    color: #2c3e50;
    font-size: 1.5em;
    margin-bottom: 25px;
    text-align: center;
}

.property-grid,
.land-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.property-card,
.land-card {
    background: #f8f9fa;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e0e0e0;
}

.property-card:hover,
.land-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.property-image,
.land-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2em;
    font-weight: 600;
}

.property-details,
.land-details {
    padding: 20px;
}

.property-details h4,
.land-details h4 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.2em;
}

.property-details p,
.land-details p {
    color: #7f8c8d;
    margin-bottom: 5px;
}

.property-price,
.land-price {
    color: #e74c3c;
    font-weight: 700;
    font-size: 1.3em;
    margin: 10px 0;
}

.contact-btn {
    width: 100%;
    padding: 12px;
    background: #2ecc71;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.contact-btn:hover {
    background: #27ae60;
    transform: translateY(-2px);
}

.restart-section {
    text-align: center;
    margin-top: 30px;
}

.restart-btn {
    padding: 15px 40px;
    background: #95a5a6;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: 600;
    transition: all 0.3s ease;
}

.restart-btn:hover {
    background: #7f8c8d;
    transform: translateY(-2px);
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header h1 {
        font-size: 2em;
    }
    
    .header p {
        font-size: 1em;
    }
    
    .chat-messages {
        min-height: 300px;
        max-height: 400px;
    }
    
    .bot-message .message-content,
    .user-message .message-content {
        max-width: 95%;
    }
    
    .amount-display {
        font-size: 2em;
        padding: 20px;
    }
    
    .property-grid,
    .land-grid {
        grid-template-columns: 1fr;
    }
    
    .options-container {
        grid-template-columns: 1fr;
    }
    
    .question-container {
        gap: 10px;
    }
    
    #nextBtn {
        align-self: stretch;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 20px 15px;
    }
    
    .header h1 {
        font-size: 1.8em;
    }
    
    .input-area {
        padding: 15px;
    }
    
    .loan-result {
        padding: 20px;
    }
    
    .property-recommendations,
    .land-recommendations {
        padding: 20px;
    }
    
    .amount-display {
        font-size: 1.8em;
        padding: 15px;
    }
}