/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: url(../images/bj1.png);
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    overflow: hidden;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    min-width: 1700px;
    z-index: -10;
    zoom: 1;
    background-color: #fff;
    background-repeat: no-repeat;
    background-size: cover;
    -webkit-background-size: cover;
    -o-background-size: cover;
    background-position: center 0;
}

/* 顶部导航栏样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background-color: rgba(255, 255, 255, 0.001);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: end;
    align-items: center;
    padding: 0 20px;
    color: white;
    z-index: 1000;
}

/* 设置下拉菜单样式 */
#settings-button {
    position: relative;
    cursor: pointer;
}

.settings-dropdown {
    padding: 5px 0;
    position: absolute;
    top: 100%;
    right: -33px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    display: none;
    z-index: 1001;
    min-width: 87px;
    margin-top: 11px;
}

.dropdown-item {
    padding: 8px 15px;
    color: #4179B8;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-size: 14px;
}

.dropdown-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.dropdown-item:last-child {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.header-left {
    display: flex;
    align-items: center;
    margin-right: 50px;
}

.header-left .date-time {
    font-size: 13px;
    color: white;
}

.header-right {
    display: flex;
    align-items: center;
    margin-right: 50px;
}

.admin-info {
    font-size: 13px;
    color: white;
}

.logout-btn {
    color: white;
    text-decoration: none;
    font-size: 13px;
    padding: 4px 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

/* 主内容区域样式 */
.main-content {
    padding-top: 70px;
    padding-left: 0px;
    padding-right: 0px;
    padding-bottom: 30px;
    min-height: 100%;
}

/* 系统标题样式 */
.system-title {
    text-align: center;
    margin-bottom: 30px;
    margin-top: 12%;
}

.system-title h1 {
    font-size: 60px;
    color: white;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 选项卡导航样式 */
.tab-nav {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 50px;
    background-color: transparent;
    border-radius: 0;
    padding: 0;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.tab-item {
    padding: 10px 18px;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 0;
    font-size: 22px;
    position: relative;
    overflow: hidden;
    background-color: transparent;
}

.tab-item.active {
    margin-top: -3px;
    font-size: 26px;
    background-color: transparent;
    color: white;
    font-weight: bold;
    box-shadow: none;
}

.tab-item.active::after {
    display: block;
    content: '———';
    position: absolute;
    left: 10%;
    top: 90%;
    transform: translateY(-50%);
    color: white;
    pointer-events: none;
}
.gang{
    color: rgba(255, 255, 255, 0.8);
    margin-top: 15px;
}
/* 选项卡内容区域样式 */
.tab-content {
    max-width: 1200px;
    margin: 0 auto;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 功能卡片容器样式 */
.card-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

/* 功能卡片样式 */
.card {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    padding: 35px 15px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 300px;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    background-color: white;
}

.card-icon {
    margin-top: 10px;
    margin-bottom: 30px;
    transition: transform 0.3s ease;
    width: 110px;
    height: 110px;
    border-radius: 50%;
    border: 3px solid #4179B8;
}

.card-icon img {
    width: 60px !important;
    height: 60px !important;
    object-fit: contain;
    margin-top: 20px;
}

.card:hover .card-icon {
    transform: scale(1.05);
}

.card-title {
    font-size: 25px;
    color: #4179B8;
    font-weight: bold;
    margin: 0;
    padding: 0;
}

/* 其他选项卡的占位内容样式 */
.tab-placeholder {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.tab-placeholder h3 {
    color: #1a5276;
    margin-bottom: 15px;
    font-size: 22px;
}

.tab-placeholder p {
    color: #666;
    font-size: 16px;
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .card-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 15px;
        height: 45px;
    }
    
    .header-right {
        gap: 10px;
    }
    
    .header-left .date-time,
    .admin-info,
    .logout-btn {
        font-size: 12px;
    }
    
    .main-content {
        padding-top: 70px;
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .system-title h1 {
        font-size: 28px;
    }
    
    .tab-nav {
        flex-wrap: wrap;
    }
    
    .tab-item {
        padding: 8px 15px;
        font-size: 13px;
    }
    
    .tab-item:not(:last-child)::after {
        display: none;
    }
    
    .card-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .card {
        padding: 25px 15px;
        height: 180px;
    }
    
    .card-icon img {
        width: 50px !important;
        height: 50px !important;
    }
    
    .tab-placeholder {
        padding: 40px 20px;
    }
}

@media (max-width: 480px) {
    .header {
        flex-direction: column;
        height: auto;
        padding: 8px 15px;
        gap: 5px;
    }
    
    .main-content {
        padding-top: 80px;
    }
    
    .system-title h1 {
        font-size: 24px;
    }
    
    .tab-item {
        font-size: 12px;
        padding: 6px 10px;
    }
    
    .card {
        height: 160px;
    }
}

/* 其他选项卡的占位内容样式 */
.tab-placeholder {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.tab-placeholder h3 {
    color: #1a5276;
    margin-bottom: 15px;
    font-size: 22px;
}

.tab-placeholder p {
    color: #666;
    font-size: 16px;
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        padding: 0 15px;
        height: 60px;
    }
    
    .header-right {
        gap: 10px;
    }
    
    .main-content {
        padding-top: 90px;
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .system-title h1 {
        font-size: 28px;
    }
    
    .tab-nav {
        flex-wrap: wrap;
        padding: 2px;
    }
    
    .tab-item {
        padding: 10px 15px;
        font-size: 13px;
    }
    
    .tab-item:not(:last-child)::after {
        display: none;
    }
    
    .card-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .card {
        padding: 30px 15px;
    }
    
    .card-icon {
        font-size: 36px;
    }
    
    .tab-placeholder {
        padding: 40px 20px;
    }
}

@media (max-width: 480px) {
    .header {
        flex-direction: column;
        height: auto;
        padding: 10px 15px;
        gap: 5px;
    }
    
    .header-left .date-time {
        font-size: 12px;
    }
    
    .main-content {
        padding-top: 100px;
    }
    
    .system-title h1 {
        font-size: 24px;
    }
    
    .tab-item {
        font-size: 12px;
        padding: 8px 12px;
    }
}
.hand{cursor: pointer;}