/* 现代简约风格 - 进销存管理系统 */

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

:root {
    --primary-color: #2d3748;
    --primary-light: #4a5568;
    --accent-color: #4299e1;
    --accent-hover: #3182ce;
    --success-color: #48bb78;
    --danger-color: #f56565;
    --warning-color: #ed8936;
    --bg-color: #f7fafc;
    --white: #ffffff;
    --text-dark: #2d3748;
    --text-light: #718096;
    --text-lighter: #a0aec0;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden; /* 防止水平滚动 */
    width: 100%;
    max-width: 100vw;
}

html {
    overflow-x: hidden; /* 防止整个页面水平滚动 */
    width: 100%;
    max-width: 100vw;
}

/* ==================== 登录页面 ==================== */
.login-page {
    background: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
}

.login-container {
    width: 100%;
    max-width: 440px;
}

.login-box {
    background: var(--white);
    padding: 48px 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.login-box h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.login-box h2 {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 36px;
    font-size: 15px;
    font-weight: 500;
}

.login-help {
    margin-top: 32px;
    padding: 20px;
    background: var(--bg-color);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-light);
    border: 1px solid var(--border-color);
}

.login-help p {
    margin: 6px 0;
    line-height: 1.8;
}

.login-help p:first-child {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

/* ==================== 头部导航 ==================== */
.main-header {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: 0;
    width: 100%;
    overflow: hidden;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 15px;
}

.user-role {
    background: var(--bg-color);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
}

/* ==================== 导航栏 ==================== */
.main-nav {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    width: 100%;
    overflow: hidden;
    position: relative;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    gap: 8px;
    align-items: center;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-color) var(--bg-color);
}

.nav-container::-webkit-scrollbar {
    height: 4px;
}

.nav-container::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 2px;
}

.nav-container::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 2px;
}

.nav-container::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

.nav-link {
    padding: 16px 20px;
    text-decoration: none;
    color: var(--text-light);
    transition: all 0.2s;
    border-bottom: 2px solid transparent;
    font-weight: 500;
    font-size: 15px;
    white-space: nowrap;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.nav-link:hover {
    color: var(--accent-color);
    background: var(--bg-color);
}

.nav-link.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    background: var(--bg-color);
}

.nav-link.disabled {
    color: #9ca3af;
    cursor: not-allowed;
    opacity: 0.65;
    border-bottom-color: transparent;
}

.nav-link.disabled:hover {
    color: #9ca3af;
    background: transparent;
}

.nav-toggle {
    display: none;
}

/* 导航滚动提示 */
.main-nav::after {
    content: '→';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(to left, var(--white) 60%, transparent);
    padding: 8px 16px;
    pointer-events: none;
    color: var(--accent-color);
    font-weight: bold;
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 1;
}

@media (max-width: 768px) {
    .main-nav::after {
        opacity: 1;
    }
    
    .main-nav.scrolled-end::after {
        opacity: 0;
    }
}

/* ==================== 主容器 ==================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px;
    flex: 1;
    width: 100%;
    overflow-x: hidden;
}

.container h1 {
    color: var(--primary-color);
    margin-bottom: 30px;
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -1px;
}

.container h2 {
    color: var(--primary-color);
    margin: 40px 0 20px;
    font-size: 22px;
    font-weight: 600;
}

.container h3 {
    color: var(--primary-color);
    margin: 30px 0 15px;
    font-size: 18px;
    font-weight: 600;
}

/* ==================== 页面头部 ==================== */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 32px;
}

.page-subtitle {
    color: var(--text-light);
    font-size: 15px;
    margin-top: 8px;
}

.header-actions {
    display: flex;
    gap: 12px;
}

/* ==================== 统计卡片 ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.stats-grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--white);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card.highlight-card {
    background: #f0f9ff;
    border-color: #bae6fd;
}

.stat-card.profit-card {
    background: #7c3aed;
    border-color: #7c3aed;
}

.stat-card.profit-card .stat-content h3 {
    color: rgba(255, 255, 255, 0.9);
}

.stat-card.profit-card .stat-number {
    color: var(--white);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-content {
    flex: 1;
}

.stat-content h3 {
    font-size: 12px;
    color: var(--text-light);
    margin: 0 0 8px 0;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    margin: 0;
}

.stat-unit {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-light);
    margin-left: 4px;
}

.stat-detail {
    font-size: 13px;
    color: var(--text-light);
    margin: 6px 0 0 0;
    font-weight: 500;
}

/* ==================== 警告提示框 ==================== */
.alert {
    padding: 16px 20px;
    border-radius: 10px;
    margin-bottom: 24px;
    border-left: 4px solid;
    background: var(--white);
    box-shadow: var(--shadow-sm);
}

.alert strong {
    font-weight: 600;
}

.alert-success {
    background: #f0fdf4;
    border-left-color: var(--success-color);
    color: #166534;
}

.alert-danger {
    background: #fef2f2;
    border-left-color: var(--danger-color);
    color: #991b1b;
}

.alert-warning {
    background: #fffbeb;
    border-left-color: var(--warning-color);
    color: #92400e;
}

.alert-info {
    background: #eff6ff;
    border-left-color: var(--accent-color);
    color: #1e40af;
}

/* ==================== 库存状态标记 ==================== */
.zero-stock {
    background: #fef2f2 !important;
}

.zero-stock:hover {
    background: #fee2e2 !important;
}

.low-stock {
    background: #fffbeb !important;
}

.low-stock:hover {
    background: #fef3c7 !important;
}

.stock-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-danger {
    background: var(--danger-color);
    color: var(--white);
}

.badge-warning {
    background: var(--warning-color);
    color: var(--white);
}

.badge-success {
    background: var(--success-color);
    color: var(--white);
}

/* ==================== 表单样式 ==================== */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.2s;
    background: var(--white);
    min-height: 44px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

/* 防止iOS自动缩放 */
@media (max-width: 768px) {
    .form-control {
        font-size: 16px; /* 防止iOS Safari自动缩放 */
    }
    
    select.form-control {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23718096' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 12px center;
        padding-right: 36px;
    }
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.1);
}

/* 金额/数量纯文本输入（无步进器，仅手动输入） */
.input-quantity,
.input-amount,
.input-integer {
    -moz-appearance: textfield;
    appearance: textfield;
}

.input-quantity:invalid,
.input-amount:invalid {
    border-color: #fca5a5;
}

/* 兼容遗留 type=number */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.form-hint {
    display: block;
    margin-top: 6px;
    font-size: 13px;
    color: var(--text-light);
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 30px;
}

/* ==================== 按钮样式 ==================== */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px; /* iOS推荐的触摸目标最小尺寸 */
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-success {
    background: var(--success-color);
    color: var(--white);
}

.btn-success:hover {
    background: #38a169;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: var(--danger-color);
    color: var(--white);
}

.btn-danger:hover {
    background: #e53e3e;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-color);
    color: var(--text-dark);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--white);
    border-color: var(--text-light);
}

.btn-logout {
    background: var(--danger-color);
    color: var(--white);
}

.btn-logout:hover {
    background: #e53e3e;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

/* ==================== 工具栏 ==================== */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    gap: 16px;
    flex-wrap: wrap;
}

.search-form {
    display: flex;
    gap: 12px;
    flex: 1;
    flex-wrap: wrap;
}

.search-form .form-control {
    flex: 1;
    min-width: 200px;
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sort-controls label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    white-space: nowrap;
}

.sort-controls .form-control {
    min-width: 160px;
    width: auto;
}

.search-form label {
    display: flex;
    align-items: center;
    margin: 0;
    white-space: nowrap;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
}

/* ==================== 表格样式 ==================== */
.table-responsive {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    position: relative;
}

/* 表格右侧滚动阴影提示 */
.table-responsive::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 30px;
    background: linear-gradient(to left, rgba(0, 0, 0, 0.08), transparent);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 2;
}

/* 表格左侧滚动阴影提示 */
.table-responsive::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 30px;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.08), transparent);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 2;
}

@media (max-width: 768px) {
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
        scrollbar-width: thin;
        scrollbar-color: var(--accent-color) var(--bg-color);
    }
    
    /* 显示滚动条 */
    .table-responsive::-webkit-scrollbar {
        height: 6px;
    }

    .table-responsive::-webkit-scrollbar-track {
        background: var(--bg-color);
        border-radius: 3px;
    }

    .table-responsive::-webkit-scrollbar-thumb {
        background: var(--accent-color);
        border-radius: 3px;
    }
    
    /* 默认显示右侧阴影（提示可以滚动） */
    .table-responsive::after {
        opacity: 1;
    }
    
    /* 滚动到末尾时隐藏右侧阴影 */
    .table-responsive.scrolled-end::after {
        opacity: 0;
    }
    
    /* 滚动时显示左侧阴影 */
    .table-responsive.scrolled::before {
        opacity: 1;
    }
}

.scroll-hint {
    transition: opacity 0.3s ease-out;
}

/* 添加滚动提示文字 */
.table-scroll-hint {
    display: none;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(66, 153, 225, 0.9);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    pointer-events: none;
    z-index: 3;
    animation: slideHint 2s ease-in-out infinite;
}

@keyframes slideHint {
    0%, 100% { transform: translateY(-50%) translateX(0); }
    50% { transform: translateY(-50%) translateX(-10px); }
}

@media (max-width: 768px) {
    .table-responsive:not(.scrolled) .table-scroll-hint {
        display: block;
    }
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--bg-color);
}

.data-table th {
    padding: 16px 20px;
    text-align: left;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-color);
}

.data-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.data-table tbody tr {
    transition: background 0.2s;
}

.data-table tbody tr:hover {
    background: var(--bg-color);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table tbody tr.total-row {
    background: var(--bg-color);
    font-weight: 600;
}

.data-table tbody tr.low-stock {
    background: #fff5f5;
}

/* 主页表格优化 */
.home-table th {
    background: var(--primary-color);
    color: var(--white);
}

.home-table td {
    font-size: 14px;
}

.text-center {
    text-align: center !important;
}

.text-success {
    color: var(--success-color) !important;
    font-weight: 600;
}

.text-danger {
    color: var(--danger-color) !important;
    font-weight: 600;
}

.text-primary {
    color: var(--accent-color) !important;
    font-weight: 600;
}

.highlight-price {
    font-weight: 700;
    color: var(--accent-color);
    font-size: 16px;
}

/* ==================== 提示框 ==================== */
.alert {
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 24px;
    font-size: 14px;
    font-weight: 500;
}

.alert-success {
    background: #f0fff4;
    color: #22543d;
    border: 1px solid #9ae6b4;
}

.alert-error {
    background: #fff5f5;
    color: #742a2a;
    border: 1px solid #feb2b2;
}

.alert-info {
    background: #ebf8ff;
    color: #2c5282;
    border: 1px solid #90cdf4;
}

/* ==================== 模态框 ==================== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--white);
    margin: 60px auto;
    padding: 40px;
    border-radius: 16px;
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    animation: slideDown 0.3s;
    box-shadow: var(--shadow-lg);
}

@keyframes slideDown {
    from {
        transform: translateY(-40px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-content h2 {
    margin-top: 0;
    margin-bottom: 30px;
    color: var(--primary-color);
    font-size: 24px;
    font-weight: 700;
}

.close {
    position: absolute;
    right: 24px;
    top: 24px;
    color: var(--text-light);
    font-size: 32px;
    font-weight: 300;
    cursor: pointer;
    transition: color 0.2s;
    line-height: 1;
}

.close:hover {
    color: var(--danger-color);
}

/* ==================== 价格参考区域 ==================== */
.price-reference {
    display: flex;
    gap: 20px;
    padding: 16px;
    background: linear-gradient(135deg, #f6f9fc 0%, #f0f4f8 100%);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.price-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.price-label {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
}

.price-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

/* ==================== 利润显示 ==================== */
.profit-display {
    padding: 16px;
    background: var(--bg-color);
    border-radius: 8px;
    font-size: 20px;
    font-weight: 700;
    text-align: center;
    border: 2px solid var(--border-color);
}

/* ==================== 最近记录区域 ==================== */
.records-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.record-card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
}

.link-more {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

.link-more:hover {
    color: var(--accent-hover);
}

.record-card .table-responsive {
    box-shadow: none;
    border: none;
    border-radius: 0;
    margin: 0;
}

.record-card .data-table th {
    font-size: 12px;
    padding: 12px 16px;
}

.record-card .data-table td {
    padding: 12px 16px;
    font-size: 13px;
}

/* ==================== 页脚样式 ==================== */
.main-footer {
    background: var(--white);
    border-top: 1px solid var(--border-color);
    text-align: center;
    padding: 30px;
    margin-top: auto;
}

.main-footer p {
    margin: 0;
    font-size: 13px;
    color: var(--text-light);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .stats-grid-3col {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .records-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    /* 头部优化 */
    .header-content {
        padding: 12px 16px;
        flex-wrap: nowrap;
    }
    
    .nav-container {
        padding: 0 12px;
        gap: 2px;
    }
    
    /* 导航栏滚动条加粗 */
    .nav-container::-webkit-scrollbar {
        height: 6px;
    }
    
    .container {
        padding: 16px;
        box-sizing: border-box;
    }
    
    /* 确保所有子元素不溢出 */
    .container > * {
        max-width: 100%;
    }
    
    .logo h2 {
        font-size: 16px;
    }
    
    .user-info {
        gap: 12px;
    }
    
    .user-name {
        font-size: 14px;
    }
    
    .user-role {
        padding: 4px 10px;
        font-size: 12px;
    }
    
    .page-header {
        flex-direction: column;
        gap: 12px;
        margin-bottom: 20px;
    }
    
    .page-header h1 {
        font-size: 22px !important;
        margin-bottom: 4px !important;
    }
    
    .page-subtitle {
        font-size: 14px;
    }
    
    .header-actions {
        width: 100%;
        gap: 8px;
    }
    
    .header-actions .btn {
        flex: 1;
        padding: 10px 16px;
        font-size: 13px;
    }
    
    .nav-link {
        padding: 12px 10px;
        font-size: 13px;
        min-width: auto;
    }
    
    .stats-grid,
    .stats-grid-3col {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .stat-card {
        padding: 20px;
    }
    
    .stat-icon {
        width: 40px;
        height: 40px;
    }
    
    .stat-number {
        font-size: 24px;
    }
    
    .container h1 {
        font-size: 24px;
        margin-bottom: 20px;
    }
    
    .container h2 {
        font-size: 18px;
        margin: 30px 0 15px;
    }
    
    .toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .search-form {
        flex-direction: column;
        gap: 10px;
    }
    
    .search-form .form-control {
        width: 100%;
        min-width: auto;
    }
    
    .search-form .btn {
        width: 100%;
    }
    
    .toolbar > .btn {
        width: 100%;
    }
    
    .sort-controls {
        flex-direction: row;
        width: 100%;
    }
    
    .sort-controls .form-control {
        flex: 1;
        min-width: auto;
    }
    
    .data-table {
        font-size: 12px;
        min-width: 100%;
    }
    
    .data-table th,
    .data-table td {
        padding: 10px 8px;
        font-size: 12px;
        white-space: nowrap;
    }
    
    .data-table th {
        font-size: 11px;
        position: sticky;
        top: 0;
        background: var(--primary-color);
        z-index: 1;
    }
    
    .btn-sm {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .records-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .card-header {
        padding: 14px 16px;
    }
    
    .card-header h2 {
        font-size: 15px !important;
    }
    
    .record-card .data-table th,
    .record-card .data-table td {
        padding: 10px 12px;
    }
    
    .modal-content {
        margin: 20px;
        padding: 24px;
        width: auto;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
    
    .price-reference {
        flex-direction: column;
        gap: 12px;
    }
}

@media (max-width: 480px) {
    .login-page {
        padding: 20px;
    }
    
    .login-box {
        padding: 32px 24px;
    }
    
    .login-box h1 {
        font-size: 22px;
    }
    
    .header-content {
        padding: 12px 16px;
        flex-wrap: wrap;
    }
    
    .logo h2 {
        font-size: 15px;
    }
    
    .user-info {
        flex-wrap: wrap;
        font-size: 12px;
        gap: 8px;
        width: 100%;
        justify-content: space-between;
    }
    
    .user-name {
        font-size: 13px;
    }
    
    .user-role {
        padding: 3px 8px;
        font-size: 11px;
    }
    
    .btn-logout {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .nav-container {
        padding: 0 12px;
    }
    
    .nav-link {
        padding: 12px 8px;
        font-size: 12px;
        min-width: auto;
    }
    
    .container {
        padding: 12px;
        box-sizing: border-box;
    }
    
    .container h1 {
        font-size: 20px;
        margin-bottom: 12px;
    }
    
    .container h2 {
        font-size: 16px;
        margin: 20px 0 10px;
    }
    
    .page-header h1 {
        font-size: 20px !important;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .stat-content h3 {
        font-size: 11px;
    }
    
    .stat-number {
        font-size: 22px;
    }
    
    .toolbar {
        gap: 10px;
    }
    
    .search-form {
        gap: 8px;
    }
    
    .form-control {
        padding: 10px 14px;
        font-size: 14px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .data-table {
        min-width: 100%;
        width: max-content;
    }
    
    .data-table th,
    .data-table td {
        padding: 10px 8px;
        font-size: 12px;
        white-space: nowrap;
    }
    
    .data-table th {
        font-size: 11px;
        position: sticky;
        top: 0;
        background: var(--primary-color);
        z-index: 1;
    }
    
    /* 首页表格特殊优化 */
    .home-table th,
    .home-table td {
        min-width: 60px;
    }
    
    .home-table th:first-child,
    .home-table td:first-child {
        position: sticky;
        left: 0;
        background: inherit;
        z-index: 2;
    }
    
    .home-table th:first-child {
        z-index: 3;
    }
    
    .alert {
        padding: 10px 12px;
        font-size: 12px;
        word-break: break-word;
    }
    
    .stat-card {
        padding: 12px;
    }
    
    .stat-content h3 {
        font-size: 10px;
    }
    
    .stat-number {
        font-size: 20px;
    }
    
    .records-grid {
        gap: 12px;
    }
    
    .card-header h2 {
        font-size: 14px !important;
    }
    
    .modal-content {
        margin: 10px;
        padding: 20px;
    }
    
    .modal-content h2 {
        font-size: 20px;
        margin-bottom: 20px;
    }
    
    .close {
        right: 16px;
        top: 16px;
        font-size: 28px;
    }
    
    .price-reference {
        flex-direction: column;
        gap: 10px;
        padding: 12px;
    }
    
    .price-label {
        font-size: 12px;
    }
    
    .price-value {
        font-size: 18px;
    }
    
    .profit-display {
        padding: 14px;
        font-size: 18px;
    }
}

/* ==================== 搜索下拉框样式 ==================== */
.searchable-select-wrapper {
    position: relative;
    width: 100%;
}

.searchable-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 300px;
    overflow-y: auto;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    margin-top: 4px;
}

.dropdown-item {
    padding: 12px 16px;
    cursor: pointer;
    transition: background-color 0.2s;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background-color: #f7fafc;
}

.dropdown-item .product-code {
    font-weight: 600;
    color: var(--accent-color);
    margin-right: 4px;
}

.dropdown-item .product-name {
    color: var(--text-dark);
}

.dropdown-no-results {
    padding: 16px;
    text-align: center;
    color: var(--text-light);
    font-style: italic;
}

/* 滚动条样式 */
.searchable-dropdown::-webkit-scrollbar {
    width: 8px;
}

.searchable-dropdown::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.searchable-dropdown::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 4px;
}

.searchable-dropdown::-webkit-scrollbar-thumb:hover {
    background: #a0aec0;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .searchable-dropdown {
        max-height: 200px;
    }
    
    .dropdown-item {
        padding: 10px 12px;
        font-size: 14px;
    }
}

/* ==================== 打印样式 ==================== */
@media print {
    .main-header,
    .main-nav,
    .main-footer,
    .toolbar,
    .btn {
        display: none;
    }
    
    .container {
        max-width: 100%;
        padding: 20px;
    }
    
    .stat-card {
        break-inside: avoid;
    }
}