:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --accent-color: #e74c3c;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
}

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

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f7f7f7;
    padding: 20px;
}

.game-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

h1, h2, h3 {
    color: var(--dark-color);
}

.stats {
    display: flex;
    gap: 15px;
}

.game-area {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 20px;
}

@media (min-width: 768px) {
    .game-area {
        flex-direction: row;
    }
}

#game-canvas {
    background-color: var(--light-color);
    border: 2px solid var(--dark-color);
    border-radius: 4px;
}

.command-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.command-input {
    display: flex;
    gap: 8px;
}

select, button {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background: white;
    font-size: 14px;
}

button {
    cursor: pointer;
    background-color: var(--primary-color);
    color: white;
    border: none;
    transition: background-color 0.2s;
}

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

.command-queue {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 10px;
}

#command-list {
    list-style-type: none;
    margin: 10px 0;
    max-height: 150px;
    overflow-y: auto;
}

#command-list li {
    padding: 5px;
    background-color: #fff;
    margin-bottom: 5px;
    border-left: 3px solid var(--primary-color);
    padding-left: 10px;
}

.shop-panel {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 15px;
    margin-bottom: 20px;
}

.shop-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin: 15px 0;
}

.shop-item {
    background-color: white;
    border: 1px solid #eee;
    border-radius: 4px;
    padding: 10px;
}

.shop-item h3 {
    font-size: 16px;
    margin-bottom: 5px;
}

.shop-item p {
    font-size: 14px;
    color: #777;
    margin-bottom: 10px;
}

.payment-methods {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.payment-btn {
    flex: 1;
    min-width: 120px;
}

#paypay-btn {
    background-color: #ff0033;
}

#line-pay-btn {
    background-color: #06c755;
}

#rakuten-pay-btn {
    background-color: #bf0000;
}

#message-log {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 10px;
}

#log-content {
    height: 100px;
    overflow-y: auto;
    background-color: white;
    border: 1px solid #eee;
    padding: 10px;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 20px;
    border-radius: 8px;
    width: 80%;
    max-width: 500px;
    position: relative;
}

.close {
    position: absolute;
    right: 20px;
    top: 10px;
    font-size: 28px;
    cursor: pointer;
}

#qr-code-area {
    text-align: center;
    margin: 20px 0;
}

#qr-code {
    max-width: 200px;
    border: 1px solid #ddd;
}