/* 商品詳情頁面樣式 */

/* 右側 sticky 支持碼與折扣碼方框 (僅桌面版) */
.codes-sidebar {
    position: fixed;
    right: 0;
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 手機版完全重置 codes-sidebar */
@media (max-width: 768px) {
    .codes-sidebar {
        position: static !important;
        right: auto !important;
        top: auto !important;
        transform: none !important;
        z-index: auto !important;
    }
    
    .support-code-sidebar,
    .discount-code-sidebar {
        position: static !important;
        top: auto !important;
        transform: none !important;
    }
}

/* 支持碼側邊欄位置 */
.support-code-sidebar {
    top: 40%;
    transform: translateY(-50%);
}

/* 折扣碼側邊欄位置 */
.discount-code-sidebar {
    top: 60%;
    transform: translateY(-50%);
}

/* 動態位置調整類別 */
.support-code-sidebar.adjusted-up {
    top: 35% !important;
}

.discount-code-sidebar.adjusted-down {
    top: 65% !important;
}

.codes-toggle {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: #f39c12;
    border: none;
    border-radius: 8px 0 0 8px;
    padding: 12px 8px;
    cursor: pointer;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    font-size: 14px;
    display: flex;
    align-items: center;
    flex-direction: column;
    gap: 4px;
    min-width: 60px;
    text-align: center;
}

.codes-toggle:hover {
    background: rgba(0, 0, 0, 0.9);
    color: #fff;
    transform: translateY(-50%) translateX(-3px);
}

.toggle-text {
    font-size: 10px;
    font-weight: 500;
    line-height: 1.2;
    white-space: nowrap;
}

/* 支持碼側邊欄特色 */
.support-code-sidebar .codes-toggle {
    color: #e74c3c;
}

.support-code-sidebar .codes-toggle:hover {
    color: #fff;
}

.support-code-sidebar .codes-header h4 {
    color: #e74c3c;
}

/* 折扣碼側邊欄特色 */
.discount-code-sidebar .codes-toggle {
    color: #f39c12;
}

.discount-code-sidebar .codes-toggle:hover {
    color: #fff;
}

.discount-code-sidebar .codes-header h4 {
    color: #f39c12;
}

.codes-content {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%) translateX(100%);
    width: 280px;
    background: rgba(30, 30, 40, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px 0 0 12px;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: -8px 0 25px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 400px;
    overflow-y: auto;
}

.codes-sidebar.expanded .codes-content {
    transform: translateY(-50%) translateX(0);
    opacity: 1;
    visibility: visible;
}

.codes-sidebar.expanded .codes-toggle {
    opacity: 0;
    pointer-events: none;
}

.codes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 16px;
}

.codes-header h4 {
    margin: 0;
    font-size: 16px;
    color: #f39c12;
    font-weight: 600;
}

.codes-close {
    background: none;
    border: none;
    color: #888;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.2s ease;
}

.codes-close:hover {
    color: #fff;
}

.code-group {
    margin-bottom: 20px;
    padding: 0 20px;
}

.code-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #e0e0e0;
    margin-bottom: 6px;
}

.code-input {
    width: 100%;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    transition: all 0.3s ease;
}

.code-input:focus {
    outline: none;
    border-color: #f39c12;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 2px rgba(243, 156, 18, 0.2);
}

.code-input::placeholder {
    color: #888;
}

.code-status-mini {
    font-size: 12px;
    margin-top: 4px;
    transition: all 0.3s ease;
}

.code-status-mini.validating {
    color: #f39c12;
}

.code-status-mini.valid {
    color: #27ae60;
    font-weight: 500;
}

.code-status-mini.invalid {
    color: #e74c3c;
}

.code-status-mini.empty {
    display: none;
    margin: 0;
    height: 0;
}

.codes-hint {
    padding: 12px 20px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 8px;
}

.codes-hint small {
    color: #888;
    font-size: 12px;
    line-height: 1.4;
}

/* 手機版導航條 */
.mobile-navigation-bar {
    display: none; /* 桌面版隱藏 */
}

/* 桌面版返回按鈕 */
.desktop-only {
    display: block;
}

@media (max-width: 768px) {
    /* 隱藏桌面版返回按鈕 */
    .desktop-only {
        display: none;
    }
    
    /* 顯示手機版導航條 */
    .mobile-navigation-bar {
        display: flex !important;
        align-items: center;
        justify-content: space-between;
        flex-wrap: nowrap; /* 確保不換行 */
        position: sticky;
        top: 68px; /* 考慮 base 模板的 nav-bar 高度 */
        z-index: 998;
        background: transparent; /* 透明背景 */
        padding: 8px 15px;
        width: 100%;
        box-sizing: border-box;
    }
    
    /* 手機版返回按鈕 */
    .mobile-back-btn {
        background: rgba(255, 255, 255, 0.1);
        color: #e0e0e0;
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 6px;
        padding: 8px 12px;
        text-decoration: none;
        display: inline-flex;
        align-items: center;
        transition: all 0.3s ease;
        backdrop-filter: blur(5px);
        font-size: 13px;
        white-space: nowrap;
        flex-shrink: 0; /* 防止縮小 */
        height: 36px; /* 增加高度 */
        box-sizing: border-box;
    }
    
    .mobile-back-btn:hover {
        background: rgba(255, 255, 255, 0.2);
        border-color: rgba(255, 255, 255, 0.3);
        color: #fff;
        transform: translateY(-1px);
    }
}

.mobile-codes-buttons {
    display: none; /* 預設隱藏，僅在手機版顯示 */
}

/* 桌面版隱藏手機版按鈕 */
@media (min-width: 769px) {
    .mobile-codes {
        display: none !important;
    }
}

/* 手機版隱藏桌面版側邊欄，顯示手機版按鈕 */
@media (max-width: 768px) {
    .desktop-codes {
        display: none !important;
    }
    
    /* 手機版按鈕組樣式 */
    .mobile-codes-buttons {
        display: flex !important;
        align-items: center;
        gap: 8px; /* 增加按鈕之間的間距 */
        flex-shrink: 0; /* 防止縮小 */
        flex-wrap: nowrap; /* 防止換行 */
    }
    
    /* 手機版 - 覆蓋所有桌面版的 sidebar 定位 */
    .mobile-codes-buttons .codes-sidebar,
    .mobile-codes .codes-sidebar,
    .mobile-codes .support-code-sidebar,
    .mobile-codes .discount-code-sidebar,
    .mobile-codes-buttons .support-code-sidebar,
    .mobile-codes-buttons .discount-code-sidebar {
        position: static !important; /* 覆蓋桌面版的 fixed 定位 */
        display: inline-block !important;
        top: auto !important;
        bottom: auto !important;
        left: auto !important;
        right: auto !important;
        transform: none !important;
        z-index: auto !important;
        width: auto !important;
        height: auto !important;
        margin: 0 !important;
        padding: 0 !important;
        float: none !important;
    }
    
    .mobile-codes .codes-toggle {
        position: static;
        top: auto;
        right: auto;
        transform: none;
        background: rgba(255, 255, 255, 0.1);
        color: #e0e0e0;
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 6px;
        padding: 8px 10px;
        text-decoration: none;
        transition: all 0.3s ease;
        backdrop-filter: blur(5px);
        
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        font-size: 12px;
        gap: 4px;
        min-width: 65px;
        width: 65px; /* 增加寬度 */
        height: 36px; /* 與返回按鈕同高 */
        white-space: nowrap;
        flex-shrink: 0; /* 防止縮小 */
        box-sizing: border-box;
    }
    
    .mobile-codes .codes-toggle:hover {
        background: rgba(255, 255, 255, 0.2);
        border-color: rgba(255, 255, 255, 0.3);
        color: #fff;
        transform: translateY(-1px);
    }
    
    .mobile-codes .toggle-text {
        font-size: 12px;
        font-weight: 400;
    }
    
    /* 增加觸控區域 */
    .mobile-codes .codes-toggle::before {
        content: '';
        position: absolute;
        top: -4px;
        left: -4px;
        right: -4px;
        bottom: -4px;
        z-index: -1;
    }
    
    /* 手機版內容窗口 - 水平置中，垂直偏上 */
    .mobile-codes .codes-content {
        position: fixed;
        left: 50%;
        top: 30%; /* 改為 30% 讓視窗更高 */
        right: auto;
        bottom: auto;
        transform: translate(-50%, -50%) translateY(10px);
        width: 300px;
        max-width: calc(100vw - 40px);
        border-radius: 12px;
        margin-top: 0;
        z-index: 1002;
        /* 確保不會超出螢幕邊界 */
        box-sizing: border-box;
    }
    
    .mobile-codes .codes-sidebar.expanded .codes-content {
        transform: translate(-50%, -50%);
        top: 30%; /* 展開時保持在 30% 位置 */
    }
    
    /* 支持碼和折扣碼窗口都使用置中定位 */
    .mobile-codes .support-code-sidebar .codes-content,
    .mobile-codes .discount-code-sidebar .codes-content {
        left: 50%;
        top: 30%; /* 預設在 30% 位置 */
        right: auto;
        width: 300px;
        transform: translate(-50%, -50%) translateY(10px);
    }
    
    .mobile-codes .support-code-sidebar.expanded .codes-content,
    .mobile-codes .discount-code-sidebar.expanded .codes-content {
        transform: translate(-50%, -50%);
        top: 30%; /* 展開時保持在 30% 位置 */
    }
    
    /* 手機版停用桌面版位置調整 */
    .support-code-sidebar.adjusted-up,
    .discount-code-sidebar.adjusted-down {
        position: static !important;
        top: auto !important;
        bottom: auto !important;
        transform: none !important;
    }
    
    /* 表單元素手機版優化 */
    .form-input,
    .form-input select {
        font-size: 16px; /* 防止 iOS 縮放 */
        padding: 12px 16px;
    }
    
    .quantity-control {
        justify-content: center;
        gap: 10px;
    }
    
    .quantity-btn {
        min-width: 44px; /* 符合觸控最小尺寸 */
        min-height: 44px;
        font-size: 18px;
    }
    
    .quantity-input {
        min-width: 60px;
        font-size: 18px;
        text-align: center;
    }
    
    /* 付款按鈕手機版優化 */
    .payment-btn {
        padding: 16px 24px;
        font-size: 18px;
        min-height: 50px;
    }
    
    /* 返回按鈕手機版優化 */
    .back-btn {
        padding: 12px 16px;
        font-size: 16px;
    }
    
    /* 產品預覽圖片手機版優化 */
    .preview-image {
        height: 200px;
        margin-bottom: 16px;
    }
    
    /* 計算區塊手機版優化 */
    .calculation-card {
        margin-bottom: 0;
        padding: 16px 20px 20px 20px;
    }
    
    .calc-total-label,
    .calc-total-value {
        font-size: 16px;
    }
    
    /* 總價資訊手機版優化 */
    .total-summary {
        margin-top: 16px;
        padding-top: 16px;
    }
    
    .summary-item {
        padding: 6px 0;
        font-size: 14px;
    }
    
    .summary-label-total {
        font-size: 1rem;
    }
    
    .summary-value-total {
        font-size: 1.15rem;
    }
}

/* 價格計算區塊樣式 */
.price-breakdown {
    width: 100%;
}

.original-price,
.discount-price,
.final-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
}

.discount-price {
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 8px;
    padding-bottom: 8px;
}

.discount-amount {
    color: #e74c3c !important;
    font-weight: 600;
}

.final-price {
    font-size: 1.1em;
    font-weight: 700;
    color: #f39c12;
    border-top: 2px solid rgba(243, 156, 18, 0.3);
    padding-top: 12px;
    margin-top: 8px;
}

.final-price .calc-total-value {
    color: #f39c12;
}

.gaming-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 20px 60px 20px;
}

/* 返回按鈕 (左上角絕對定位) */
.back-btn {
    position: fixed;
    top: 80px;
    left: 20px;
    background: rgba(255,255,255,0.08);
    color: #e0e0e0;
    border: none;
    padding: 12px 24px;
    border-radius: 10px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    z-index: 997; /* 確保低於手機版導航區域 */
    opacity: 0;
    transform: translateX(-30px);
    animation: slideInLeft 0.6s ease-out 0.7s forwards;
    animation-fill-mode: both;
}

/* 手機版返回按鈕調整 */
@media (max-width: 768px) {
    .back-btn {
        top: 20px; /* 手機版調整位置 */
        font-size: 14px;
        padding: 10px 16px;
    }
}

.back-btn:hover {
    background: rgba(255,255,255,0.12);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.item-container {
    background: rgba(255,255,255,0.05);
    border: none;
    border-radius: 16px;
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 
        0 20px 60px rgba(0,0,0,0.4),
        0 0 0 1px rgba(255,255,255,0.08),
        inset 0 1px 0 rgba(255,255,255,0.1);
}

.item-image {
    height: 400px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    position: relative;
    background-color: rgba(102, 126, 234, 0.1);
}

.item-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0,0,0,0.3), transparent);
}

.item-details {
    padding: 45px;
}

.item-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #ecf0f1;
    margin-bottom: 25px;
    background: linear-gradient(45deg, #ffd700, #ff4500);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.item-description {
    color: #bdc3c7;
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 35px;
}

.item-price {
    color: #ffffff;
    font-size: 2.3rem;
    font-weight: 600;
    margin-bottom: 35px;
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 1px;
}

.purchase-section {
    background: rgba(0,0,0,0.4);
    border-radius: 12px;
    padding: 35px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 
        0 8px 32px rgba(0,0,0,0.3),
        0 0 0 1px rgba(255,255,255,0.08);
}

.quantity-section {
    margin-bottom: 35px;
}

.quantity-label {
    font-size: 1.2rem;
    font-weight: bold;
    color: #ecf0f1;
    margin-bottom: 20px;
    display: block;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
}

.quantity-btn {
    background: linear-gradient(135deg, rgba(102,126,234,0.8), rgba(118,75,162,0.8));
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 10px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(102,126,234,0.3);
}

.quantity-btn:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(102,126,234,0.4);
}

.quantity-input {
    background: rgba(255,255,255,0.08);
    border: none;
    color: #ecf0f1;
    text-align: center;
    width: 80px;
    height: 50px;
    font-size: 1.2rem;
    font-weight: bold;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 
        0 4px 15px rgba(0,0,0,0.2),
        0 0 0 1px rgba(255,255,255,0.08);
    -moz-appearance: textfield;
}

.quantity-input::-webkit-outer-spin-button,
.quantity-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.quantity-input:focus {
    outline: none;
    background: rgba(255,255,255,0.12);
    box-shadow: 
        0 6px 20px rgba(102,126,234,0.3),
        0 0 0 1px rgba(102,126,234,0.5);
}

.total-price {
    color: #2ecc71;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 25px;
}

.buy-now-btn {
    background: linear-gradient(135deg, rgba(102,126,234,0.9), rgba(118,75,162,0.9));
    color: white;
    border: none;
    padding: 18px 40px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    width: 100%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 8px 25px rgba(102,126,234,0.4);
}

.buy-now-btn:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(102,126,234,0.5);
}

.item-info {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid #34495e;
}

.info-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    color: #bdc3c7;
}

.info-label {
    font-weight: bold;
    color: #ecf0f1;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .gaming-container {
        padding: 20px 15px 50px 15px;
    }
    
    .item-details {
        padding: 25px;
    }
    
    .item-title {
        font-size: 2rem;
    }
    
    .item-price {
        font-size: 2rem;
    }
    
    .purchase-section {
        padding: 25px;
    }
    
    .quantity-control {
        gap: 15px;
    }
}

/* 商品展示頁面樣式 */
.product-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
        "left right-top"
        "left right-bottom";
    gap: 40px;
    margin-top: 20px;
}

.product-showcase, 
.payment-form {
    background: rgba(255,255,255,0.05);
    border: none;
    border-radius: 16px;
    padding: 32px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 
        0 20px 60px rgba(0,0,0,0.4),
        0 0 0 1px rgba(255,255,255,0.08),
        inset 0 1px 0 rgba(255,255,255,0.1);
}

.calculation-card {
    background: rgba(255,255,255,0.05);
    border: none;
    border-radius: 16px;
    padding: 20px 32px 24px 32px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 
        0 20px 60px rgba(0,0,0,0.4),
        0 0 0 1px rgba(255,255,255,0.08),
        inset 0 1px 0 rgba(255,255,255,0.1);
    height: fit-content;
}

.product-showcase { 
    grid-area: left; 
    opacity: 0;
    transform: translateX(-30px);
    animation: slideInLeft 0.8s ease-out 0.1s forwards;
    animation-fill-mode: both;
}
.calculation-card { 
    grid-area: right-top; 
    opacity: 0;
    transform: translateY(-30px);
    animation: slideInDown 0.8s ease-out 0.3s forwards;
    animation-fill-mode: both;
}
.payment-form { 
    grid-area: right-bottom; 
    opacity: 0;
    transform: translateY(30px);
    animation: slideInUp 0.8s ease-out 0.5s forwards;
    animation-fill-mode: both;
}

/* 商品展示樣式 */
.showcase-title {
    color: #ecf0f1;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.product-price {
    color: #f39c12;
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 12px rgba(243,156,18,0.4);
    white-space: nowrap;
    padding: 8px 16px;
    border-radius: 8px;
    background-color: rgba(243,156,18,0.1);
    border: 1px solid rgba(243,156,18,0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.product-preview {
    display: grid;
    grid-template-columns: 180px 1fr;
    grid-template-rows: auto auto;
    grid-template-areas:
        "title title"
        "image details";
    gap: 16px 24px;
    align-items: start;
    margin-bottom: 30px;
}

.preview-image {
    grid-area: image;
    width: 180px;
    height: 140px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    background-color: rgba(102, 126, 234, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(102, 126, 234, 0.12);
    box-shadow: 
        0 4px 16px rgba(0,0,0,0.15),
        inset 0 1px 0 rgba(255,255,255,0.08);
    flex-shrink: 0;
}

.product-description {
    color: #c8d0d8;
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95rem;
    background: linear-gradient(145deg, rgba(0,0,0,0.25), rgba(0,0,0,0.15));
    padding: 16px 18px;
    border-radius: 10px;
    border-left: 3px solid #3498db;
    border: 1px solid rgba(255,255,255,0.05);
    box-shadow: 
        0 2px 8px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(255,255,255,0.05);
    max-height: 200px;
    overflow-y: auto;
}

.product-description::-webkit-scrollbar {
    width: 8px;
}

.product-description::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
}

.product-description::-webkit-scrollbar-thumb {
    background: rgba(102,126,234,0.5);
    border-radius: 4px;
    transition: background 0.3s ease;
}

.product-description::-webkit-scrollbar-thumb:hover {
    background: rgba(102,126,234,0.7);
}

.product-name {
    grid-area: title;
    color: #ecf0f1;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 4px;
    background: linear-gradient(45deg, #ffd700, #ff4500);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.product-price-row {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    margin-bottom: 40px;
    padding: 16px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.price-label {
    color: #95a5a6;
    font-size: 0.9rem;
    font-weight: 500;
}

.price-value {
    color: #f39c12;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.3px;
}



.product-features {
    background: linear-gradient(145deg, rgba(46,204,113,0.12), rgba(39,174,96,0.08));
    border-radius: 14px;
    padding: 22px;
    margin-bottom: 30px;
    border: 1px solid rgba(46,204,113,0.25);
    box-shadow: 
        0 6px 20px rgba(46,204,113,0.1),
        inset 0 1px 0 rgba(255,255,255,0.1);
}

.product-features h4 {
    color: #2ecc71;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.15rem;
    font-weight: 600;
}

.product-features p {
    margin: 0;
    color: #d5d8dc;
    line-height: 1.6;
    font-size: 1.05rem;
}

.product-specs {
    background: linear-gradient(145deg, rgba(0,0,0,0.3), rgba(0,0,0,0.15));
    border-radius: 14px;
    padding: 22px;
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 
        0 6px 20px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(255,255,255,0.05);
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.spec-item:last-child {
    margin-bottom: 0;
    padding-bottom: 12px;
    border-bottom: none;
}

.spec-label {
    color: #95a5a6;
    font-size: 0.95rem;
    font-weight: 500;
}

.spec-value {
    color: #ecf0f1;
    font-weight: 600;
    font-size: 0.95rem;
}

.spec-value.available {
    color: #2ecc71;
    text-shadow: 0 0 6px rgba(46,204,113,0.3);
}

.spec-value.unavailable {
    color: #e74c3c;
    text-shadow: 0 0 6px rgba(231,76,60,0.3);
}

.section-title {
    color: #ecf0f1;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.item-info {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #34495e;
}

.item-info .item-image {
    width: 80px;
    height: 80px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    background-color: rgba(102, 126, 234, 0.1);
    border-radius: 6px;
    flex-shrink: 0;
}

.item-info .item-details h3 {
    color: #ecf0f1;
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.item-info .item-details p {
    color: #bdc3c7;
    margin-bottom: 5px;
}

.order-summary-table {
    margin-bottom: 25px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px 0;
}

.summary-row:not(:last-child) {
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.summary-row.total {
    font-size: 1.3rem;
    font-weight: bold;
    color: #f39c12;
    border-top: 2px solid #34495e;
    padding-top: 20px;
    margin-top: 20px;
}

.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    color: #ecf0f1;
    font-weight: bold;
    margin-bottom: 10px;
    font-size: 1rem;
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255,255,255,0.08);
    border: none;
    border-radius: 10px;
    color: #ecf0f1;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 
        0 4px 15px rgba(0,0,0,0.2),
        0 0 0 1px rgba(255,255,255,0.08);
}

.form-input:focus {
    outline: none;
    background: rgba(255,255,255,0.12);
    box-shadow: 
        0 6px 20px rgba(102,126,234,0.3),
        0 0 0 1px rgba(102,126,234,0.5);
}

.form-input::placeholder {
    color: #7f8c8d;
}



.payment-btn {
    background: linear-gradient(135deg, rgba(102,126,234,0.9), rgba(118,75,162,0.9));
    color: white;
    border: none;
    padding: 18px 40px;
    border-radius: 12px;
    font-size: 1.2rem;
    font-weight: 600;
    width: 100%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 8px 25px rgba(102,126,234,0.4);
}

.payment-btn:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(102,126,234,0.5);
}

.payment-btn:disabled {
    background: #7f8c8d;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.gift-notice {
    background: rgba(52,152,219,0.15);
    border: none;
    border-radius: 10px;
    padding: 18px;
    margin-top: 20px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 
        0 4px 15px rgba(52,152,219,0.2),
        0 0 0 1px rgba(52,152,219,0.3);
}

.gift-notice h4 {
    color: #3498db;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.gift-notice p {
    color: #bdc3c7;
    margin: 0;
    line-height: 1.5;
}

/* 購買計算區塊樣式 (獨立區塊) */
.quantity-calculation-section {
    background: linear-gradient(145deg, rgba(102,126,234,0.08), rgba(118,75,162,0.06));
    border-radius: 16px;
    padding: 28px 32px;
    margin-bottom: 35px;
    border: 1px solid rgba(102,126,234,0.2);
    box-shadow: 
        0 8px 24px rgba(102,126,234,0.15),
        inset 0 1px 0 rgba(255,255,255,0.1);
    width: 100%;
    max-width: none;
}

.calculation-title { display: none; }

.calculation-inline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.quantity-display { display: none; }

.quantity-display .quantity-control {
    display: flex;
    align-items: center;
    gap: 12px;
}

.price-breakdown {
    display: none;
}

.price-item {
    display: none;
}

.price-item:last-child {
    margin-bottom: 0;
}

.price-item-label {
    color: #95a5a6;
    font-size: 0.95rem;
    font-weight: 500;
}

.price-item-value {
    color: #ecf0f1;
    font-size: 1.1rem;
    font-weight: 600;
}

.total-price-item { display: none; }

.total-price-item .price-item-label { display: none; }

.total-price-item .price-item-value { display: none; }

.calc-total {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.calc-total-label {
    color: #95a5a6;
}

.calc-total-value {
    color: #ecf0f1;
    font-size: 1.25rem;
    font-weight: 700;
}

/* 總價資訊樣式 */
.total-summary {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid rgba(102,126,234,0.2);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    color: #bdc3c7;
    font-size: 0.95rem;
}

.summary-label {
    color: #95a5a6;
    font-weight: 500;
}

.summary-value {
    color: #ecf0f1;
    font-weight: 600;
}

.summary-item.total-display {
    margin-top: 12px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.summary-label-total {
    color: #f39c12;
    font-size: 1.1rem;
    font-weight: 700;
}

.summary-value-total {
    color: #f39c12;
    font-size: 1.3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* 新增的表單樣式 */
.required {
    color: #e74c3c;
}

.form-hint {
    color: #7f8c8d;
    font-size: 0.85rem;
    margin-top: 5px;
    display: block;
}

/* 表單驗證回饋樣式 */
.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 6px;
    font-size: 0.875rem;
    color: #e74c3c;
    background: rgba(231, 76, 60, 0.1);
    padding: 8px 12px;
    border-radius: 6px;
    border-left: 3px solid #e74c3c;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    animation: fadeInValidation 0.3s ease-out;
}

.valid-feedback {
    display: block;
    width: 100%;
    margin-top: 6px;
    font-size: 0.875rem;
    color: #27ae60;
    background: rgba(39, 174, 96, 0.1);
    padding: 8px 12px;
    border-radius: 6px;
    border-left: 3px solid #27ae60;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    animation: fadeInValidation 0.3s ease-out;
}

/* 驗證狀態的輸入框樣式 */
.form-input.is-valid {
    border-color: #27ae60;
    box-shadow: 0 0 0 2px rgba(39, 174, 96, 0.25);
}

.form-input.is-invalid {
    border-color: #e74c3c;
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.25);
}

/* 驗證狀態動畫 */
@keyframes fadeInValidation {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.terms-group {
    margin-bottom: 30px;
}

.checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: #667eea;
    cursor: pointer;
    margin-top: 2px;
}

.checkbox-label {
    color: #bdc3c7;
    line-height: 1.5;
    cursor: pointer;
    margin-bottom: 0;
}

.terms-link {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s;
}

.terms-link:hover {
    color: #2980b9;
    text-decoration: underline;
}

.players-link {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    margin-left: 8px;
}

.players-link:hover {
    color: #2980b9;
    text-decoration: underline;
}

.item-additional-info {
    margin-top: 25px;
    padding-top: 25px;
    border-top: 1px solid #34495e;
}

.item-additional-info .info-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    color: #bdc3c7;
    font-size: 0.9rem;
}

.item-additional-info .info-label {
    font-weight: bold;
    color: #ecf0f1;
}

/* 發票表單樣式 */
.invoice-method-container {
    margin-top: 20px;
    background: linear-gradient(145deg, rgba(46,204,113,0.08), rgba(39,174,96,0.05));
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(46,204,113,0.2);
    box-shadow: 
        0 4px 16px rgba(46,204,113,0.1),
        inset 0 1px 0 rgba(255,255,255,0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.invoice-method-container:hover {
    background: linear-gradient(145deg, rgba(46,204,113,0.12), rgba(39,174,96,0.08));
    border-color: rgba(46,204,113,0.3);
    box-shadow: 
        0 6px 20px rgba(46,204,113,0.15),
        inset 0 1px 0 rgba(255,255,255,0.08);
}

.invoice-method-container .form-label {
    color: #2ecc71;
    margin-bottom: 15px;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.invoice-method-container .form-input {
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(46,204,113,0.25);
    box-shadow: 
        0 3px 12px rgba(0,0,0,0.15),
        inset 0 1px 0 rgba(255,255,255,0.1);
}

.invoice-method-container .form-input:focus {
    background: rgba(255,255,255,0.16);
    border-color: rgba(46,204,113,0.5);
    box-shadow: 
        0 5px 18px rgba(46,204,113,0.2),
        0 0 0 2px rgba(46,204,113,0.3);
}

.invoice-method-container .form-hint {
    color: #a8dcc4;
    font-size: 0.8rem;
    margin-top: 8px;
    font-style: italic;
    opacity: 0.9;
}

/* 發票方式選擇器樣式 */
#invoiceMethodSelect {
    background: rgba(255,255,255,0.08);
    color: #ecf0f1;
    border: 1px solid rgba(255,255,255,0.12);
    padding: 14px 18px;
    border-radius: 10px;
    font-size: 1rem;
    transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ecf0f1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 16px;
    padding-right: 45px;
    background-attachment: scroll;
}

#invoiceMethodSelect:focus {
    outline: none;
    background-color: rgba(255,255,255,0.12);
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ecf0f1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 16px;
    border-color: rgba(102,126,234,0.5);
    box-shadow: 
        0 6px 20px rgba(102,126,234,0.3),
        0 0 0 1px rgba(102,126,234,0.5);
}

#invoiceMethodSelect option {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 10px;
}

/* 發票圖示樣式 */
.form-label i.fa-receipt {
    color: #f39c12;
    text-shadow: 0 0 8px rgba(243,156,18,0.4);
}

.form-label i.fa-envelope {
    color: #3498db;
    text-shadow: 0 0 8px rgba(52,152,219,0.4);
}

.form-label i.fa-mobile-alt {
    color: #9b59b6;
    text-shadow: 0 0 8px rgba(155,89,182,0.4);
}

/* 入場動畫關鍵幀 */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 身分證字號查詢按鈕 */
.input-group {
    display: flex;
    position: relative;
}

.input-group .form-input {
    border-radius: 12px 0 0 12px;
    border-right: none;
    flex: 1;
}

/* 自動填入身分證字號按鈕 - 綠色透明背景 */
.input-group .auto-fill-id-btn {
    background-color: rgba(25, 135, 84, 0.1);
    border: 1px solid rgba(25, 135, 84, 0.3);
    border-left: none;
    border-radius: 0 12px 12px 0;
    color: #198754;
    padding: 12px 16px;
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
}

.input-group .auto-fill-id-btn:hover {
    background-color: rgba(25, 135, 84, 0.2);
    border-color: rgba(25, 135, 84, 0.5);
    color: #198754;
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(25, 135, 84, 0.2);
}

.input-group .auto-fill-id-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(25, 135, 84, 0.3);
}

.input-group .auto-fill-id-btn i {
    font-size: 0.9rem;
}

.btn-search {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-left: none;
    border-radius: 0 12px 12px 0;
    color: white;
    padding: 12px 16px;
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
}

.btn-search:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-search:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);
}

.btn-search i {
    font-size: 0.9rem;
}

/* 響應式表單樣式 */
@media (max-width: 768px) {
    .gaming-container {
        padding: 20px 15px 50px 15px;
    }
    
    .product-container {
        grid-template-columns: 1fr;
        grid-template-areas:
            "left"
            "right-top"
            "right-bottom";
        gap: 25px;
    }
    
    .product-showcase, 
    .payment-form {
        padding: 20px;
    }
    
    .calculation-inline { flex-direction: column; align-items: stretch; gap: 12px; }
    
    .quantity-calculation-section {
        padding: 20px 24px;
        margin-bottom: 25px;
    }
    
    .showcase-title {
        flex-direction: row;
        gap: 10px;
        text-align: left;
        justify-content: flex-start;
    }
    
    .product-price {
        font-size: 1.3rem;
        padding: 6px 12px;
    }
    
    .product-preview { 
        grid-template-columns: 1fr; 
        grid-template-areas:
            "title"
            "image"
            "details";
        gap: 16px;
    }
    .preview-image { 
        width: 100%;
        height: 160px; 
        margin: 0;
    }
    
    .checkbox-wrapper {
        gap: 10px;
    }
    
    .checkbox-label {
        font-size: 0.9rem;
    }
    
    .invoice-method-container {
        padding: 15px;
        margin-top: 15px;
    }
    
    .invoice-method-container .form-label {
        font-size: 0.95rem;
        margin-bottom: 12px;
    }
    
    .invoice-method-container .form-hint {
        font-size: 0.75rem;
        margin-top: 6px;
    }
}

@media (max-width: 480px) {
    .gaming-container {
        padding: 15px 10px 50px 10px;
    }
    
    .item-details {
        padding: 20px;
    }
    
    .item-title {
        font-size: 1.7rem;
    }
    
    .item-price {
        font-size: 1.8rem;
    }
    
    .purchase-section {
        padding: 20px;
    }
    
    .quantity-control {
        gap: 12px;
    }
    
    .quantity-btn {
        min-width: 44px;
        min-height: 44px;
        width: 48px;
        height: 48px;
        font-size: 1.1rem;
    }
    
    /* 側邊欄在極小螢幕的進一步優化 */
    .codes-content {
        width: 260px;
        max-width: calc(100vw - 30px);
        left: 50%;
        right: auto;
        transform: translateX(-50%) translateY(10px);
    }
    
    .codes-sidebar.expanded .codes-content {
        transform: translateX(-50%) translateY(0);
    }
    
    .support-code-sidebar {
        bottom: 120px;
        right: 50%;
        transform: translateX(50%);
    }
    
    .discount-code-sidebar {
        bottom: 40px;
        right: 50%;
        transform: translateX(50%);
    }
    
    /* 表單欄位垂直間距優化 */
    .form-group {
        margin-bottom: 20px;
    }
    
    /* checkbox 表單組間距優化 */
    .form-group .checkbox-wrapper:first-child:last-child {
        margin-bottom: 0;
    }
    
    /* 記住資訊與條款同意間距調整 - 記住資訊checkbox與條款同意checkbox距離靠近 */
    .terms-group + .form-group:last-of-type {
        margin-bottom: 10px;
    }
    
    /* 或者直接針對 terms-group 前面的 form-group */
    .form-group + .terms-group {
        margin-top: -10px;
    }
    
    .terms-group {
        margin-bottom: 20px;
    }
    
    /* 產品規格在手機版的優化 */
    .product-specs {
        margin-top: 16px;
    }
    
    .spec-item {
        padding: 8px 0;
        font-size: 14px;
    }
    
    /* 複選框和標籤手機版優化 */
    .checkbox-wrapper {
        padding: 8px 0;
    }
    
    .checkbox-label {
        font-size: 15px;
        line-height: 1.4;
        padding-left: 8px;
    }
    
    /* 條款連結在手機版的優化 */
    .terms-link {
        display: inline-block;
        padding: 2px 4px;
        margin: 0 2px;
    }
    
    /* 搜尋按鈕手機版優化 */
    .btn-search {
        min-width: 44px;
        min-height: 44px;
        padding: 10px;
    }
    
    /* 確保觸控區域足夠大 */
    .codes-close {
        min-width: 44px;
        min-height: 44px;
        padding: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* 價格顯示在手機版的優化 */
    .price-value,
    .calc-total-value {
        word-break: break-all;
        font-size: 16px;
    }
    
    /* 表單提示文字手機版優化 */
    .form-hint {
        font-size: 13px;
        line-height: 1.3;
        margin-top: 6px;
    }
    
    /* 驗證回饋手機版優化 */
    .invalid-feedback,
    .valid-feedback {
        font-size: 13px;
        padding: 6px 10px;
        margin-top: 4px;
        border-radius: 4px;
    }
    
    /* 確保輸入框驗證狀態在手機版清晰可見 */
    .form-input.is-valid,
    .form-input.is-invalid {
        border-width: 2px;
    }
}

.quantity-input {
    width: 70px;
    height: 45px;
    font-size: 1.1rem;
}

.checkbox-wrapper {
    gap: 8px;
}

.checkbox-label {
    font-size: 0.85rem;
}

.invoice-method-container {
    padding: 12px;
    margin-top: 12px;
}

.invoice-method-container .form-label {
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.invoice-method-container .form-hint {
    font-size: 0.7rem;
    margin-top: 5px;
}