/* 在 base.css 顶部定义变量 */
:root {
  --primary-gradient: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
  --primary-gradient-hover: linear-gradient(90deg, #5a6fdd, #6a4299);
  --primary-light: #bfbbe8;
  --text-dark: #333;
  --text-muted: #4a4a68;
  --border-radius: 12px;
  --border-radius-sm: 6px;
  --border-radius-lg: 10px;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 12px rgba(102, 126, 234, 0.3);
  --primary-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-bg: linear-gradient(135deg, #d6e530 0%, #499942 100%);
}

/* ================================= 基础样式 ================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background-color: #f8f9fa;
    color: var(--text-dark);
    line-height: 1.6;
}

/* ================================= 布局样式 ================================= */
.container {
    max-width: 100%; /* 最大宽度减去右侧 margin */
    margin: 10px auto 25px auto;
    padding: 0px 5px 20px 5px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

/* ================================= 头部样式 ================================= */
.header {
    background: var(--primary-gradient);
    color: white;
    padding: 10.8px 20px; /* 缩小10%：12px -> 10.8px */
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 12px; /* 图片与标题间距 */
}

.company-logo {
    height: 45px; /* 调整logo高度，与标题对齐 */
    width: auto; /* 保持宽高比 */
    border-radius: var(--border-radius-sm);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15); /* 添加阴影 */
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    background: linear-gradient(90deg, #73e873, #50eae7);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.header h2{
    font-size: 1.0rem;
    color: var(--text-muted); 
    margin-bottom: 10px; 
    font-weight: 500;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info span {
    font-size: 0.95rem;
    white-space: nowrap;
}

/* ================================= 导航样式 ================================= */
/* 导航折叠样式修改 */
.nav-container {
    background-color: #5a64b9;
    padding: 0 20px; /* 添加内边距 */
}

.nav-title {
    color: white;
    padding: 10.8px 0; /* 缩小10%：12px -> 10.8px */
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    font-size: 1.05rem;
    display: none; /* 默认隐藏，小屏幕显示 */
}

.nav-title:after {
    content: '+';
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.nav-title.active:after {
    transform: rotate(45deg);
}

/* 大屏幕设备上默认显示导航栏 */
.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    padding: 0;
    margin: 0;
    list-style: none;
}

/* 确保Bootstrap collapse在大屏幕设备上默认展开 */
@media (min-width: 769px) {
    .nav.collapse:not(.show) {
        display: flex !important;
    }
}

.nav a {
    color: white;
    text-decoration: none;
    padding: 12px 18px;
    border-radius: 4px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    display: inline-block; /* 确保点击区域完整 */
}

.nav a:hover, .nav a.active {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}
.nav a:focus, .btn:focus {
  outline: 2px solid #fff;
  outline-offset: 2px;
}
/* ================================= 按钮样式 ================================= */
.btn {
    display: inline-block;
    padding: 8px 18px;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 0.95rem;
}

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

.btn-primary:hover {
    background: var(--primary-gradient-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.btn-primary:active {
    transform: translateY(0);
}

/* ================================= 表格样式 ================================= */
.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 25px 0;
    margin-bottom: 20px;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.data-table th {
    background: linear-gradient(90deg, #f0f2ff, #e9e5ff);
    color: var(--text-muted);
    font-weight: 600;
    padding: 14px 18px;
    text-align: left;
    border-bottom: 2px solid #e0e0e0;
}

.data-table td {
    padding: 14px 18px;
    border-bottom: 1px solid #f0f0f0;
    transition: background-color 0.2s ease;
}

.data-table tr:hover td {
    background-color: var(--primary-light);
}

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

/* ================================= 提示消息样式 ================================= */
.flash-messages {
    margin-bottom: 20px;
}

.flash-message {
    padding: 14px 18px;
    border-radius: 8px;
    margin-bottom: 12px;
    background-color: #fff0f0;
    color: #dc3545;
    border: 1px solid #ffe3e3;
    animation: fadeIn 0.3s ease;
}
.flash-success {
  background-color: #f0fff4;
  color: #166534;
  border: 1px solid #dcfce7;
}
.flash-error, .flash-warning {
  background-color: #fff0f0;
  color: #dc3545;
  border: 1px solid #ffe3e3;
}

/* ================================= 动画样式 ================================= */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeOut { 
    from { opacity: 1; transform: translateY(0); } 
    to { opacity: 0; transform: translateY(-10px); } 
}
/* ================================= 响应式样式 ================================= */
@media screen and (max-width: 768px) {
    /* 头部调整 */
    .header {
        padding: 4.5px 15px; /* 缩小10%：5px -> 4.5px */
    }
    
    .header h1 {
        font-size: 1.3rem;
        background: linear-gradient(90deg, #73e873, #50eae7);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
    }
    
    .header h2 {
        font-size: 1.0rem;
    }
    
    .user-info {
        gap: 10px;
    }
    
    /* 导航调整 */
    .nav-title {
        display: flex;
    }
    
    /* 保持Bootstrap collapse组件的正常工作 */
    .nav.collapse:not(.show) {
        display: none;
    }
    
    .nav.collapse.show {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        width: 100%;
    }
    
    .nav-item {
        position: relative;
        overflow: hidden;
        border-radius: var(--border-radius);
        transition: all 0.3s ease;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    }

    .nava-link {
        display: block;
        padding: 1.8rem 1.5rem;
        text-decoration: none;
        color: #fff;
        font-weight: 500;
        font-size: 1.1rem;
        position: relative;
        z-index: 2;
        background: var(--primary-bg);
        transition: all 0.3s ease;
        width:100%;
    }
    
    .nav-item:hover {
        transform: scale(0.9);
        box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-item:hover .nava-link {
        background: var(--secondary-bg);
        padding-left: 2rem;
    }

    .nava-link::before {
        content: "click";
        position: absolute;
        right: 2rem;
        opacity: 0;
        transform: translateX(10px);
        transition: all 0.3s ease;
    }

    .nav-item:hover .nava-link::before {
        opacity: 1;
        transform: translateX(0);
    }
    
    /* 容器调整 */
    .nav-container {
        padding: 3px;
    }
    
    
    
    /* 表格响应式处理 */
    .table-container {
        overflow-x: auto;
        border-radius: var(--border-radius-lg);
        box-shadow: var(--shadow-sm);
    }
    
    .data-table {
        width: 100%;
        border-collapse: separate;
        border-spacing: 0;
        margin: 25px 0;
        margin-bottom: 20px;
        border-radius: var(--border-radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
    }
}