* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background: #f0f2f5; color: #333; font-size: 14px; }
a { color: #1890ff; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }

/* 登录页 */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.login-box { background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 20px 60px rgba(0,0,0,.3); width: 380px; }
.login-box h1 { text-align: center; margin-bottom: 30px; color: #333; font-size: 24px; }
.login-box .form-group { margin-bottom: 20px; }
.login-box label { display: block; margin-bottom: 8px; color: #666; font-weight: 500; }
.login-box input { width: 100%; padding: 12px 14px; border: 1px solid #d9d9d9; border-radius: 6px; font-size: 14px; transition: border .3s; }
.login-box input:focus { outline: none; border-color: #667eea; box-shadow: 0 0 0 3px rgba(102,126,234,.15); }
.login-box .btn-login { width: 100%; padding: 12px; background: linear-gradient(135deg, #667eea, #764ba2); color: #fff; border: none; border-radius: 6px; font-size: 16px; font-weight: 600; margin-top: 10px; transition: opacity .3s; }
.login-box .btn-login:hover { opacity: .9; }
.login-box .tip { text-align: center; margin-top: 16px; color: #999; font-size: 12px; }
.login-box .role-tabs { display: flex; margin-bottom: 24px; border: 1px solid #d9d9d9; border-radius: 6px; overflow: hidden; }
.login-box .role-tab { flex: 1; padding: 10px; text-align: center; cursor: pointer; background: #fafafa; font-size: 13px; transition: all .2s; }
.login-box .role-tab.active { background: #667eea; color: #fff; }

/* 布局 */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #001529; color: #fff; position: fixed; top: 0; left: 0; bottom: 0; overflow-y: auto; z-index: 100; }
.sidebar .logo { padding: 20px 16px; font-size: 18px; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,.1); display: flex; align-items: center; gap: 8px; }
.sidebar .logo .icon { font-size: 22px; }
.menu { padding: 8px 0; }
.menu-group-title {
    padding: 12px 20px;
    font-size: 14px;
    color: rgba(255,255,255,.85);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    font-weight: 500;
    transition: all .2s;
}
.menu-group-title:hover { background: rgba(255,255,255,.08); color: #fff; }
.menu-group-title .group-arrow { font-size: 12px; transition: transform .2s; color: rgba(255,255,255,.6); }
.menu-group-title.open .group-arrow { transform: rotate(90deg); }
.menu-group-items { overflow: hidden; max-height: 0; transition: max-height .3s; }
.menu-group-items.open { max-height: 5000px; }
.menu-item { position: relative; }
.menu-title { padding: 10px 20px 10px 40px; cursor: pointer; display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,.75); transition: all .2s; font-size: 14px; }
.menu-title:hover { color: #fff; background: rgba(255,255,255,.06); }
.menu-title.active { color: #1890ff; background: rgba(24,144,255,.15); }
.menu-title.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #1890ff;
}
.menu-title .arrow { margin-left: auto; transition: transform .2s; font-size: 10px; }
.menu-title.open .arrow { transform: rotate(90deg); }
.submenu { background: rgba(0,0,0,.2); overflow: hidden; max-height: 0; transition: max-height .3s; }
.submenu.open { max-height: 500px; }
.submenu-item { padding: 9px 20px 9px 68px; cursor: pointer; color: rgba(255,255,255,.65); font-size: 13px; transition: all .2s; position: relative; }
.submenu-item:hover { color: #fff; }
.submenu-item.active { color: #fff; background: #1890ff; }
.submenu-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #fff;
}

.main { flex: 1; margin-left: 220px; display: flex; flex-direction: column; min-height: 100vh; }
.topbar { height: 56px; background: #fff; box-shadow: 0 1px 4px rgba(0,0,0,.08); display: flex; align-items: center; justify-content: space-between; padding: 0 24px; position: sticky; top: 0; z-index: 50; }
.topbar .page-title { font-size: 18px; font-weight: 600; }
.topbar .user-info { display: flex; align-items: center; gap: 12px; }
.topbar .user-info .avatar { width: 32px; height: 32px; border-radius: 50%; background: #1890ff; color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 600; }
.topbar .btn-logout { padding: 6px 14px; border: 1px solid #ff4d4f; color: #ff4d4f; background: #fff; border-radius: 4px; font-size: 13px; transition: all .2s; }
.topbar .btn-logout:hover { background: #ff4d4f; color: #fff; }

.content { padding: 24px; flex: 1; }
.card { background: #fff; border-radius: 8px; padding: 20px; margin-bottom: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid #f0f0f0; display: flex; align-items: center; justify-content: space-between; }

/* 表格 */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px; text-align: left; border-bottom: 1px solid #f0f0f0; }
th { background: #fafafa; font-weight: 600; color: #666; font-size: 13px; }
tr:hover { background: #fafafa; }

/* 按钮 */
.btn { padding: 7px 16px; border-radius: 4px; border: 1px solid #d9d9d9; background: #fff; font-size: 13px; transition: all .2s; display: inline-flex; align-items: center; gap: 4px; }
.btn:hover { border-color: #1890ff; color: #1890ff; }
.btn-primary { background: #1890ff; color: #fff; border-color: #1890ff; }
.btn-primary:hover { background: #40a9ff; color: #fff; }
.btn-danger { color: #ff4d4f; border-color: #ff4d4f; }
.btn-danger:hover { background: #ff4d4f; color: #fff; }
.btn-success { color: #52c41a; border-color: #52c41a; }
.btn-warning { color: #faad14; border-color: #faad14; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* 表单 */
.form-row { display: flex; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.form-group { flex: 1; min-width: 200px; }
.form-group label { display: block; margin-bottom: 6px; color: #666; font-size: 13px; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 8px 12px; border: 1px solid #d9d9d9; border-radius: 4px; font-size: 14px;
}
.form-group input:focus, .form-group select:focus { outline: none; border-color: #1890ff; }

/* 标签 */
.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.tag-green { background: #f6ffed; color: #52c41a; border: 1px solid #b7eb8f; }
.tag-red { background: #fff2f0; color: #ff4d4f; border: 1px solid #ffccc7; }
.tag-blue { background: #e6f7ff; color: #1890ff; border: 1px solid #91d5ff; }
.tag-orange { background: #fff7e6; color: #faad14; border: 1px solid #ffd591; }
.tag-gray { background: #fafafa; color: #999; border: 1px solid #d9d9d9; }

/* 模态框 */
.modal-mask { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,.5); display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal { background: #fff; border-radius: 8px; width: 480px; max-width: 90vw; max-height: 80vh; overflow-y: auto; }
.modal-header { padding: 16px 20px; border-bottom: 1px solid #f0f0f0; font-size: 16px; font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
.modal-close { cursor: pointer; color: #999; font-size: 20px; }
.modal-body { padding: 20px; }
.modal-footer { padding: 12px 20px; border-top: 1px solid #f0f0f0; text-align: right; display: flex; gap: 8px; justify-content: flex-end; }

/* 提示 */
.toast { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); padding: 12px 24px; border-radius: 6px; color: #fff; z-index: 2000; font-size: 14px; animation: slideDown .3s; }
.toast-success { background: #52c41a; }
.toast-error { background: #ff4d4f; }
.toast-info { background: #1890ff; }
@keyframes slideDown { from { opacity: 0; transform: translate(-50%, -20px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* 上传区域 */
.upload-area { border: 2px dashed #d9d9d9; border-radius: 8px; padding: 40px; text-align: center; cursor: pointer; transition: all .3s; }
.upload-area:hover { border-color: #1890ff; background: #f0f8ff; }
.upload-area .icon { font-size: 48px; color: #1890ff; margin-bottom: 12px; }
.upload-area .text { color: #666; }

/* 统计卡片 */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat-card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.stat-card .label { color: #999; font-size: 13px; margin-bottom: 8px; }
.stat-card .value { font-size: 28px; font-weight: 700; color: #333; }

/* 隐藏 */
.hidden { display: none !important; }

/* 文件上传输入 */
input[type="file"] { display: none; }