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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    padding-bottom: 65px;
}

/* 顶部商家信息 */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.shop-name {
    font-size: 20px;
    margin-bottom: 8px;
}

.shop-tags {
    display: flex;
    gap: 10px;
}

.tag {
    background: rgba(255,255,255,0.2);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
}

/* 主体布局 */
.main-container {
    display: flex;
    height: calc(100vh - 165px);
    overflow: hidden;
}

/* 左侧分类 */
.category-sidebar {
    width: 90px;
    background: #f8f8f8;
    overflow-y: auto;
    border-right: 1px solid #e5e5e5;
}

.category-item {
    padding: 20px 10px;
    text-align: center;
    font-size: 14px;
    color: #666;
    cursor: pointer;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.category-item:hover {
    background: #fff;
}

.category-item.active {
    background: #fff;
    color: #667eea;
    font-weight: bold;
    border-left-color: #667eea;
}

/* 右侧菜品列表 */
.dish-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    position: relative;

    padding: 15px;
}

.category-section {
    margin-bottom: 20px;
}

.category-title {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
    padding-left: 10px;
    border-left: 4px solid #667eea;
    transition: all 0.3s;
    position: sticky;
    top: 0;
    background: #f5f5f5;
    padding-top: 10px;
    padding-bottom: 10px;
    z-index: 10;
}

.dish-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.dish-item {
    display: flex;
    background: white;
    border-radius: 12px;
    padding: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: transform 0.2s;
    cursor: pointer;
}

.dish-item:active {
    transform: scale(0.98);
}

.dish-img {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    object-fit: cover;
    margin-right: 12px;
}

.dish-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.dish-name {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.dish-desc {
    font-size: 12px;
    color: #999;
    margin-bottom: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.dish-tags {
    display: flex;
    gap: 5px;
    margin-bottom: 8px;
}

.dish-tag {
    background: #fff3e0;
    color: #ff9800;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
}

.dish-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dish-price {
    color: #ff6b6b;
    font-size: 18px;
    font-weight: bold;
}

.dish-sales {
    font-size: 12px;
    color: #999;
    margin-left: 10px;
}

.dish-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.control-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background: #667eea;
    color: white;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.control-btn:active {
    transform: scale(0.9);
}

.control-btn.minus {
    background: #e0e0e0;
    color: #666;
}

.dish-count {
    min-width: 20px;
    text-align: center;
    font-weight: bold;
}

/* 底部购物车 */
.cart-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 65px;
    background: #2c2c2c;
    display: flex;
    align-items: center;
    padding: 0 15px;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 200;
    gap: 10px;
}

.cart-icon-wrapper {
    position: relative;
    flex-shrink: 0;
}

.cart-icon {
    width: 45px;
    height: 45px;
    background: #667eea;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    transition: transform 0.2s;
    position: relative;
}

.cart-icon:active {
    transform: scale(0.95);
}

.cart-count {
    position: absolute;
    top: -3px;
    right: -3px;
    background: #ff6b6b;
    color: white;
    border-radius: 9px;
    padding: 2px 5px;
    font-size: 11px;
    min-width: 18px;
    text-align: center;
    font-weight: bold;
}

.cart-info {
    flex: 1;
    color: white;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.cart-price {
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 2px;
}

.price-label {
    font-size: 14px;
}

.delivery-fee {
    font-size: 11px;
    color: #999;
    line-height: 1.2;
}

.checkout-btn {
    background: #4caf50;
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 18px;
    font-size: 13px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    white-space: nowrap;
    flex-shrink: 0;
}

.checkout-btn:disabled {
    background: #555;
    cursor: not-allowed;
}

.checkout-btn:not(:disabled):active {
    transform: scale(0.95);
}

/* 购物车详情弹窗 */
.cart-detail-mask {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 65px;
    background: rgba(0,0,0,0.5);
    z-index: 198;
    display: none;
    backdrop-filter: blur(2px);
}

.cart-detail-mask.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

.cart-detail {
    position: fixed;
    bottom: 65px;
    left: 0;
    right: 0;
    max-height: 50vh;
    background: white;
    border-radius: 20px 20px 0 0;
    z-index: 199;
    transform: translateY(0);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.cart-detail.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.cart-detail-header {
    display: flex;
    justify-content: space-between;
    padding: 15px 20px;
    border-bottom: 1px solid #f0f0f0;
    font-weight: bold;
}

.clear-cart {
    color: #999;
    cursor: pointer;
}

.cart-detail-list {
    max-height: calc(50vh - 60px);
    overflow-y: auto;
    padding: 10px 20px;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid #f5f5f5;
}

.cart-item-name {
    flex: 1;
    font-size: 14px;
}

.cart-item-price {
    color: #ff6b6b;
    margin: 0 15px;
}

/* 菜品详情弹窗 */
.dish-detail-mask {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    z-index: 400;
    display: none;
}

.dish-detail-mask.show {
    display: block;
}

.dish-detail {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 90%;
    max-width: 500px;
    background: white;
    border-radius: 16px;
    z-index: 401;
    transition: transform 0.3s;
}

.dish-detail.show {
    transform: translate(-50%, -50%) scale(1);
}

.dish-detail-content {
    padding: 20px;
}

.dish-detail-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 15px;
}

.dish-detail-name {
    font-size: 20px;
    margin-bottom: 10px;
}

.dish-detail-desc {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
}

.dish-detail-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.dish-detail-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dish-detail-price {
    color: #ff6b6b;
    font-size: 24px;
    font-weight: bold;
}

.add-to-cart-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
}

.close-detail {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 30px;
    height: 30px;
    background: rgba(0,0,0,0.5);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

::-webkit-scrollbar-track {
    background: #f5f5f5;
}

/* 支付二维码弹窗 */
.payment-mask {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    z-index: 500;
    display: none;
    backdrop-filter: blur(4px);
}

.payment-mask.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

.payment-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 90%;
    max-width: 400px;
    background: white;
    border-radius: 16px;
    z-index: 501;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.payment-modal.show {
    transform: translate(-50%, -50%) scale(1);
}

.payment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #f0f0f0;
}

.payment-header h3 {
    font-size: 20px;
    color: #333;
    margin: 0;
}

.close-payment {
    width: 32px;
    height: 32px;
    background: #f5f5f5;
    color: #666;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.2s;
}

.close-payment:hover {
    background: #e0e0e0;
    color: #333;
}

.payment-content {
    padding: 20px;
}

.payment-info {
    margin-bottom: 20px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    font-size: 14px;
}

.info-row .label {
    color: #666;
}

.info-row .value {
    color: #333;
    font-weight: 500;
}

.info-row .amount {
    color: #ff6b6b;
    font-size: 20px;
    font-weight: bold;
}

.qrcode-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background: #f8f8f8;
    border-radius: 12px;
    margin-bottom: 20px;
}

.qrcode-image {
    width: 200px;
    height: 200px;
    padding: 15px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    object-fit: contain;
}

.qrcode-tip {
    margin-top: 15px;
    font-size: 13px;
    color: #666;
    text-align: center;
}

.payment-status {
    text-align: center;
}

.status-checking {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f0f0f0;
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.status-checking p {
    color: #666;
    font-size: 14px;
    margin: 0;
}

.status-success {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.status-success.show {
    display: flex;
}

.success-icon {
    width: 60px;
    height: 60px;
    background: #4caf50;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
    animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.status-success p {
    color: #4caf50;
    font-size: 16px;
    font-weight: bold;
    margin: 0;
}

/* 支付失败样式 */
.status-failure {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.status-failure.show {
    display: flex;
}

.failure-icon {
    width: 60px;
    height: 60px;
    background: #f44336;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
    animation: shakeIn 0.5s ease;
}

@keyframes shakeIn {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.status-failure p {
    color: #f44336;
    font-size: 16px;
    font-weight: bold;
    margin: 0;
    text-align: center;
}