/* ==========================================
   全局响应式设计 - 所有页面通用
   ========================================== */

/* 容器响应式 */
.responsive-container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
}

.responsive-content {
    padding: 12px;
}

.responsive-card {
    border-radius: 12px;
    margin-bottom: 12px;
    padding: 12px;
}

/* 响应式表格 */
.responsive-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.responsive-table th,
.responsive-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.responsive-table th {
    background: #f5f5f5;
    font-weight: 600;
}

/* 响应式表单 */
.responsive-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-weight: 600;
    font-size: 13px;
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 10px 12px;
    border: 1px solid #d0d0d0;
    border-radius: 8px;
    font-size: 13px;
}

/* 响应式按钮组 */
.button-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.button-group.vertical {
    flex-direction: column;
}

.button-group.horizontal {
    flex-direction: row;
}

/* 响应式列表 */
.responsive-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.responsive-list li {
    padding: 12px;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.responsive-list li:last-child {
    border-bottom: none;
}

/* 响应式网格 */
.responsive-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.responsive-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.responsive-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

/* ==========================================
   超小屏幕 (320px - 479px)
   ========================================== */
@media screen and (max-width: 479px) {
    .responsive-content {
        padding: 10px;
    }
    
    .responsive-card {
        border-radius: 10px;
        margin-bottom: 10px;
        padding: 10px;
    }
    
    .responsive-table {
        font-size: 12px;
    }
    
    .responsive-table th,
    .responsive-table td {
        padding: 8px;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 8px 10px;
        font-size: 12px;
    }
    
    .button-group {
        gap: 6px;
    }
    
    .responsive-list li {
        padding: 10px;
        font-size: 12px;
    }
    
    .responsive-grid-2,
    .responsive-grid-3,
    .responsive-grid-4 {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    /* 首页商品：移动端强制两列 */
    #reco-grid {
        display: grid !important;
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        gap: 12px !important;
        width: 100% !important;
    }
    #reco-grid > * {
        width: 100% !important;
    }

    /* 今日特价：移动端改为两列网格（不横向滚动） */
    #deals-list {
        display: grid !important;
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        gap: 12px !important;
        overflow: visible !important;
        width: 100% !important;
    }
    #deals-list > div {
        width: 100% !important;
        min-width: 0 !important;
    }
    
    /* 隐藏不必要的列 */
    .hide-on-mobile {
        display: none !important;
    }
}

/* ==========================================
   小屏幕 (480px - 767px)
   ========================================== */
@media screen and (min-width: 480px) and (max-width: 767px) {
    .responsive-content {
        padding: 12px;
    }
    
    .responsive-card {
        border-radius: 12px;
        margin-bottom: 12px;
        padding: 12px;
    }
    
    .responsive-table {
        font-size: 13px;
    }
    
    .responsive-table th,
    .responsive-table td {
        padding: 10px;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 10px 12px;
        font-size: 13px;
    }
    
    .button-group {
        gap: 8px;
    }
    
    .responsive-list li {
        padding: 12px;
        font-size: 13px;
    }
    
    .responsive-grid-2 {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .responsive-grid-3,
    .responsive-grid-4 {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    /* 隐藏不必要的列 */
    .hide-on-mobile {
        display: none !important;
    }
}

/* ==========================================
   平板设备 (768px - 1023px)
   ========================================== */
@media screen and (min-width: 768px) and (max-width: 1023px) {
    .responsive-content {
        padding: 15px;
        max-width: 100%;
    }
    
    .responsive-card {
        border-radius: 14px;
        margin-bottom: 15px;
        padding: 15px;
    }
    
    .responsive-table {
        font-size: 14px;
    }
    
    .responsive-table th,
    .responsive-table td {
        padding: 12px;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 12px 14px;
        font-size: 14px;
    }
    
    .button-group {
        gap: 10px;
    }
    
    .responsive-list li {
        padding: 14px;
        font-size: 14px;
    }
    
    .responsive-grid-2 {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .responsive-grid-3 {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
    
    .responsive-grid-4 {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
    
    /* 显示隐藏的列 */
    .hide-on-mobile {
        display: table-cell !important;
    }
}

/* ==========================================
   桌面设备 (1024px - 1439px)
   ========================================== */
@media screen and (min-width: 1024px) and (max-width: 1439px) {
    .responsive-content {
        padding: 20px;
        max-width: 1200px;
        margin: 0 auto;
    }
    
    .responsive-card {
        border-radius: 16px;
        margin-bottom: 18px;
        padding: 18px;
    }
    
    .responsive-table {
        font-size: 15px;
    }
    
    .responsive-table th,
    .responsive-table td {
        padding: 14px;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 14px 16px;
        font-size: 15px;
    }
    
    .button-group {
        gap: 12px;
    }
    
    .responsive-list li {
        padding: 16px;
        font-size: 15px;
    }
    
    .responsive-grid-2 {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
    
    .responsive-grid-3 {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
    }
    
    .responsive-grid-4 {
        grid-template-columns: repeat(4, 1fr);
        gap: 18px;
    }
    
    /* 显示隐藏的列 */
    .hide-on-mobile {
        display: table-cell !important;
    }
}

/* ==========================================
   大屏幕 (1440px+)
   ========================================== */
@media screen and (min-width: 1440px) {
    .responsive-content {
        padding: 24px;
        max-width: 1400px;
        margin: 0 auto;
    }
    
    .responsive-card {
        border-radius: 18px;
        margin-bottom: 20px;
        padding: 20px;
    }
    
    .responsive-table {
        font-size: 16px;
    }
    
    .responsive-table th,
    .responsive-table td {
        padding: 16px;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 16px 18px;
        font-size: 16px;
    }
    
    .button-group {
        gap: 14px;
    }
    
    .responsive-list li {
        padding: 18px;
        font-size: 16px;
    }
    
    .responsive-grid-2 {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .responsive-grid-3 {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    
    .responsive-grid-4 {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }
    
    /* 显示隐藏的列 */
    .hide-on-mobile {
        display: table-cell !important;
    }
}

/* ==========================================
   横屏模式
   ========================================== */
@media screen and (orientation: landscape) and (max-height: 500px) {
    .responsive-content {
        padding: 8px;
    }
    
    .responsive-card {
        border-radius: 10px;
        margin-bottom: 8px;
        padding: 8px;
    }
    
    .responsive-table {
        font-size: 11px;
    }
    
    .responsive-table th,
    .responsive-table td {
        padding: 6px;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 6px 8px;
        font-size: 11px;
    }
    
    .button-group {
        gap: 4px;
    }
    
    .responsive-list li {
        padding: 8px;
        font-size: 11px;
    }
}

/* ==========================================
   打印样式
   ========================================== */
@media print {
    .responsive-content {
        padding: 0;
    }
    
    .responsive-card {
        page-break-inside: avoid;
        margin-bottom: 10px;
        padding: 10px;
    }
    
    .responsive-table {
        width: 100%;
    }
    
    .responsive-table th,
    .responsive-table td {
        padding: 8px;
        border: 1px solid #000;
    }
}