/* 若依风格 - 智慧校园管理平台 */
:root {
  --sidebar-bg: #304156;
  --sidebar-active: #263445;
  --sidebar-text: #bfcbd9;
  --sidebar-active-text: #409eff;
  --primary: #409eff;
  --success: #67c23a;
  --warning: #e6a23c;
  --danger: #f56c6c;
  --info: #909399;
  --border: #e6ebf5;
  --bg: #f0f2f5;
  --text: #303133;
  --text-secondary: #606266;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", Arial, sans-serif; font-size: 14px; color: var(--text); background: var(--bg); }

a { color: var(--primary); text-decoration: none; }
a:hover { opacity: 0.85; }

/* ===== 登录页 ===== */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.login-box { width: 420px; background: #fff; border-radius: 6px; padding: 40px 35px 30px; box-shadow: 0 2px 12px rgba(0,0,0,.15); }
.login-title { text-align: center; font-size: 22px; font-weight: 600; margin-bottom: 8px; color: #303133; }
.login-sub { text-align: center; color: #909399; font-size: 13px; margin-bottom: 30px; }
.form-item { margin-bottom: 18px; }
.form-item label { display: block; margin-bottom: 6px; color: #606266; font-size: 13px; }
.form-input { width: 100%; height: 38px; border: 1px solid #dcdfe6; border-radius: 4px; padding: 0 12px; font-size: 14px; outline: none; transition: border .2s; }
.form-input:focus { border-color: var(--primary); }
.form-select { width: 100%; height: 38px; border: 1px solid #dcdfe6; border-radius: 4px; padding: 0 12px; background: #fff; }
.btn { display: inline-flex; align-items: center; justify-content: center; height: 32px; padding: 0 15px; border: 1px solid transparent; border-radius: 4px; font-size: 13px; cursor: pointer; white-space: nowrap; transition: all .2s; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-default { background: #fff; border-color: #dcdfe6; color: #606266; }
.btn-text { background: transparent; border: none; color: var(--primary); padding: 0 8px; height: auto; }
.btn-lg { width: 100%; height: 40px; font-size: 15px; margin-top: 10px; }
.btn + .btn { margin-left: 8px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ===== 主框架 ===== */
.app-wrapper { display: flex; height: 100vh; overflow: hidden; }
.sidebar { width: 210px; background: var(--sidebar-bg); flex-shrink: 0; display: flex; flex-direction: column; transition: width .3s; overflow: hidden; }
.sidebar.collapsed { width: 64px; }
.sidebar-logo { height: 50px; display: flex; align-items: center; justify-content: center; background: #2b2f3a; color: #fff; font-size: 15px; font-weight: 600; white-space: nowrap; overflow: hidden; }
.sidebar-logo span { margin-left: 8px; }
.sidebar-menu { flex: 1; overflow-y: auto; padding: 8px 0; }
.menu-group-title { padding: 10px 20px 6px; font-size: 12px; color: #7d8ea3; white-space: nowrap; }
.sidebar.collapsed .menu-group-title { display: none; }
.menu-item { display: flex; align-items: center; padding: 0 20px; height: 46px; color: var(--sidebar-text); cursor: pointer; white-space: nowrap; transition: background .2s; border-left: 3px solid transparent; }
.menu-item:hover { background: var(--sidebar-active); }
.menu-item.active { background: var(--sidebar-active); color: var(--sidebar-active-text); border-left-color: var(--primary); }
.menu-item .icon { width: 18px; text-align: center; flex-shrink: 0; font-style: normal; }
.menu-item .label { margin-left: 10px; }
.sidebar.collapsed .menu-item .label { display: none; }
.sidebar.collapsed .menu-item { justify-content: center; padding: 0; }

.main-container { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.navbar { height: 50px; background: #fff; border-bottom: 1px solid var(--border); display: flex; align-items: center; padding: 0 16px; justify-content: space-between; flex-shrink: 0; }
.navbar-left { display: flex; align-items: center; gap: 12px; }
.hamburger { font-size: 20px; cursor: pointer; color: #5a5e66; padding: 4px 8px; }
.breadcrumb { color: #97a8be; font-size: 13px; }
.breadcrumb span { color: var(--text-secondary); }
.navbar-right { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--text-secondary); }
.role-tag { background: #ecf5ff; color: var(--primary); padding: 2px 8px; border-radius: 3px; font-size: 12px; }
.content-frame { flex: 1; border: none; width: 100%; background: var(--bg); }

/* ===== 页面内容区（iframe 内） ===== */
.page-container { padding: 16px; min-height: 100%; }
.page-header { margin-bottom: 16px; }
.page-header h2 { font-size: 18px; font-weight: 500; margin-bottom: 4px; }
.page-header p { color: var(--text-secondary); font-size: 13px; }

.card { background: #fff; border-radius: 4px; border: 1px solid var(--border); margin-bottom: 16px; }
.card-header { padding: 14px 16px; border-bottom: 1px solid var(--border); font-weight: 500; display: flex; align-items: center; justify-content: space-between; }
.card-body { padding: 16px; }

.search-form { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; margin-bottom: 16px; }
.search-form .form-group { display: flex; flex-direction: column; gap: 4px; }
.search-form label { font-size: 12px; color: var(--text-secondary); }
.search-form input, .search-form select { height: 32px; border: 1px solid #dcdfe6; border-radius: 4px; padding: 0 10px; min-width: 160px; font-size: 13px; }

.toolbar { margin-bottom: 12px; display: flex; gap: 8px; flex-wrap: wrap; }

.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th { background: #f5f7fa; color: #909399; font-weight: 500; padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
.data-table tr:hover td { background: #f5f7fa; }

.tag { display: inline-block; padding: 2px 8px; border-radius: 3px; font-size: 12px; line-height: 18px; }
.tag-primary { background: #ecf5ff; color: var(--primary); }
.tag-success { background: #f0f9eb; color: var(--success); }
.tag-warning { background: #fdf6ec; color: var(--warning); }
.tag-danger { background: #fef0f0; color: var(--danger); }
.tag-info { background: #f4f4f5; color: var(--info); }

.pagination { display: flex; align-items: center; justify-content: flex-end; gap: 8px; padding: 12px 0 0; font-size: 13px; color: var(--text-secondary); }
.pagination .page-btn { min-width: 28px; height: 28px; border: 1px solid #dcdfe6; background: #fff; border-radius: 3px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; }
.pagination .page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 统计卡片 */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 16px; }
.stat-card { background: #fff; border: 1px solid var(--border); border-radius: 4px; padding: 20px; }
.stat-card .label { font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.stat-card .value { font-size: 28px; font-weight: 600; color: var(--text); }
.stat-card .value.danger { color: var(--danger); }
.stat-card .value.warning { color: var(--warning); }
.stat-card .value.success { color: var(--success); }
.stat-card .value.primary { color: var(--primary); }
.stat-card .sub { font-size: 12px; color: #909399; margin-top: 6px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* 表单布局 */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; margin-bottom: 6px; color: var(--text-secondary); font-size: 13px; }
.form-row label .req { color: var(--danger); }
.form-row textarea { width: 100%; border: 1px solid #dcdfe6; border-radius: 4px; padding: 8px 12px; min-height: 80px; font-family: inherit; resize: vertical; }

/* 弹窗 */
.modal-mask { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 2000; align-items: center; justify-content: center; }
.modal-mask.show { display: flex; }
.modal { background: #fff; border-radius: 6px; width: 520px; max-width: 90vw; max-height: 85vh; overflow: auto; box-shadow: 0 4px 20px rgba(0,0,0,.2); }
.modal-lg { width: 800px; }
.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; font-weight: 500; font-size: 16px; }
.modal-close { cursor: pointer; font-size: 20px; color: #909399; border: none; background: none; }
.modal-body { padding: 20px; }
.modal-footer { padding: 12px 20px; border-top: 1px solid var(--border); text-align: right; }

/* 预警弹窗（全屏） */
.alert-overlay { display: none; position: fixed; inset: 0; background: rgba(245, 34, 45, .92); z-index: 3000; flex-direction: column; align-items: center; justify-content: center; color: #fff; }
.alert-overlay.show { display: flex; animation: pulse-bg 1.5s infinite; }
@keyframes pulse-bg { 0%,100% { background: rgba(245,34,45,.92); } 50% { background: rgba(180,20,30,.95); } }
.alert-box { text-align: center; max-width: 900px; width: 90%; }
.alert-box .alert-icon { font-size: 64px; margin-bottom: 16px; }
.alert-box h1 { font-size: 32px; margin-bottom: 12px; letter-spacing: 2px; }
.alert-box .alert-info { font-size: 16px; margin-bottom: 24px; opacity: .9; }
.alert-media { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }
.alert-media .media-box { background: rgba(0,0,0,.3); border-radius: 8px; height: 200px; display: flex; align-items: center; justify-content: center; font-size: 14px; border: 2px solid rgba(255,255,255,.3); }
.alert-actions { display: flex; gap: 16px; justify-content: center; }
.alert-actions .btn { height: 44px; padding: 0 32px; font-size: 15px; }
.alert-level-tag { display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 13px; margin-bottom: 12px; background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.4); }
.alert-level-tag.major { background: rgba(255,193,7,.25); border-color: #ffc107; }
.alert-level-tag.normal { background: rgba(255,255,255,.15); }
.alert-push-chain { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; font-size: 13px; }
.push-step { display: flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 4px; background: rgba(0,0,0,.25); border: 1px solid rgba(255,255,255,.2); }
.push-step.done { border-color: #67c23a; }
.push-step.active { border-color: #ffc107; animation: pulse-step 1s infinite; }
.push-step.skip { opacity: .55; }
.push-step .push-icon { font-weight: bold; }
@keyframes pulse-step { 0%,100% { opacity: 1; } 50% { opacity: .7; } }

/* 素材库 */
.material-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; }
.material-card { border: 1px solid var(--border); border-radius: 6px; overflow: hidden; background: #fff; transition: box-shadow .2s; }
.material-card:hover { box-shadow: 0 2px 12px rgba(0,0,0,.08); }
.material-thumb { height: 120px; background: linear-gradient(135deg, #ecf5ff, #f5f7fa); display: flex; align-items: center; justify-content: center; font-size: 36px; }
.material-body { padding: 10px 12px; }
.material-body .title { font-size: 13px; font-weight: 500; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.material-body .meta { font-size: 12px; color: #909399; margin-bottom: 8px; }
.material-body .actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* 推送时间线（事件详情） */
.push-timeline { margin: 12px 0 16px; padding: 12px 16px; background: #f5f7fa; border-radius: 4px; }
.push-timeline-title { font-size: 13px; font-weight: 500; margin-bottom: 10px; color: var(--text-primary); }
.push-timeline-item { display: flex; align-items: flex-start; gap: 10px; padding: 6px 0; font-size: 13px; color: #606266; }
.push-timeline-item .dot { width: 8px; height: 8px; border-radius: 50%; background: #67c23a; margin-top: 5px; flex-shrink: 0; }
.push-timeline-item.pending .dot { background: #e6a23c; }
.push-timeline-item.skip .dot { background: #c0c4cc; }

/* 设备状态 */
.device-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.device-card { border: 1px solid var(--border); border-radius: 4px; padding: 14px; background: #fff; }
.device-card .name { font-weight: 500; margin-bottom: 8px; }
.device-card .status { font-size: 12px; margin-bottom: 10px; }
.device-card .actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* 树形 */
.tree { font-size: 13px; line-height: 28px; }
.tree-node { padding-left: 16px; cursor: pointer; color: var(--text-secondary); }
.tree-node:hover { color: var(--primary); }
.tree-node.active { color: var(--primary); font-weight: 500; }

.info-box { background: #ecf5ff; border: 1px solid #d9ecff; border-radius: 4px; padding: 12px 16px; color: #409eff; font-size: 13px; margin-bottom: 16px; }
.warn-box { background: #fdf6ec; border: 1px solid #faecd8; border-radius: 4px; padding: 12px 16px; color: #e6a23c; font-size: 13px; margin-bottom: 16px; }
.success-box { background: #f0f9eb; border: 1px solid #e1f3d8; border-radius: 4px; padding: 12px 16px; color: #67c23a; font-size: 13px; margin-bottom: 16px; }

/* Toast 提示 */
.toast { position: fixed; top: 20px; left: 50%; transform: translateX(-50%) translateY(-80px); background: #fff; border: 1px solid var(--border); border-radius: 4px; padding: 12px 24px; box-shadow: 0 4px 12px rgba(0,0,0,.12); z-index: 5000; font-size: 14px; opacity: 0; transition: all .3s; pointer-events: none; }
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.toast.success { border-color: #c2e7b0; color: #67c23a; }
.toast.warning { border-color: #f5dab1; color: #e6a23c; }
.toast.info { border-color: #b3d8ff; color: #409eff; }

/* 视频预览占位 */
.preview-box { background: #1a1a2e; border-radius: 6px; height: 320px; display: flex; flex-direction: column; align-items: center; justify-content: center; color: #909399; }
.preview-box .play-icon { font-size: 48px; margin-bottom: 12px; opacity: .6; }

/* 页签 */
.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.tab-item { padding: 10px 20px; cursor: pointer; color: var(--text-secondary); font-size: 14px; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tab-item:hover { color: var(--primary); }
.tab-item.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 500; }

/* 左树右表布局 */
.layout-tree-table { display: grid; grid-template-columns: 240px 1fr; gap: 16px; align-items: start; }
.tree-panel { background: #fff; border: 1px solid var(--border); border-radius: 4px; }
.tree-panel-header { padding: 12px 14px; border-bottom: 1px solid var(--border); font-weight: 500; font-size: 13px; }
.tree-panel-body { padding: 10px 8px; max-height: 520px; overflow-y: auto; }

/* 详情描述列表 */
.desc-list { display: grid; grid-template-columns: 120px 1fr; gap: 8px 16px; font-size: 13px; }
.desc-list dt { color: var(--text-secondary); }
.desc-list dd { color: var(--text); margin: 0; }

.btn-sm { height: 26px; padding: 0 10px; font-size: 12px; }

.view-toggle { display: flex; gap: 4px; }
.view-toggle .btn { padding: 0 10px; }
.view-toggle .btn.active { background: #ecf5ff; color: var(--primary); border-color: #b3d8ff; }

/* 富文本编辑器（仿 Quill / 若依 Editor） */
.rich-editor { border: 1px solid #dcdfe6; border-radius: 4px; background: #fff; overflow: hidden; }
.rich-editor-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 2px; padding: 8px 10px; border-bottom: 1px solid #ebeef5; background: #fafafa; }
.rich-editor-toolbar .tool-group { display: inline-flex; align-items: center; gap: 2px; padding-right: 8px; margin-right: 8px; border-right: 1px solid #e4e7ed; }
.rich-editor-toolbar .tool-group:last-child { border-right: none; margin-right: 0; padding-right: 0; }
.rich-editor-toolbar button,
.rich-editor-toolbar select { height: 28px; min-width: 28px; padding: 0 8px; border: 1px solid transparent; border-radius: 3px; background: transparent; color: #606266; font-size: 13px; cursor: pointer; line-height: 1; }
.rich-editor-toolbar button:hover { background: #ecf5ff; color: var(--primary); border-color: #d9ecff; }
.rich-editor-toolbar button.active { background: #ecf5ff; color: var(--primary); }
.rich-editor-toolbar select { border-color: #dcdfe6; background: #fff; padding-right: 4px; }
.rich-editor-body { min-height: 180px; max-height: 320px; overflow-y: auto; padding: 12px 14px; font-size: 14px; line-height: 1.7; color: var(--text); outline: none; }
.rich-editor-body:empty:before { content: attr(data-placeholder); color: #c0c4cc; }
.rich-editor-body p { margin: 0 0 10px; }
.rich-editor-body h2 { font-size: 18px; margin: 0 0 10px; }
.rich-editor-body ul, .rich-editor-body ol { margin: 0 0 10px 20px; }
.rich-editor-body img { max-width: 100%; border-radius: 4px; margin: 8px 0; display: block; }
.rich-editor-hint { font-size: 12px; color: #909399; margin-top: 6px; }
.cover-preview { margin-top: 8px; width: 160px; height: 90px; border: 1px dashed #dcdfe6; border-radius: 4px; display: none; align-items: center; justify-content: center; overflow: hidden; background: #fafafa; }
.cover-preview.show { display: flex; }
.cover-preview img { width: 100%; height: 100%; object-fit: cover; }

.checkbox-group { display: flex; flex-wrap: wrap; gap: 12px 20px; padding: 8px 0; }
.checkbox-group label { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-secondary); cursor: pointer; }

.algo-effective-card .card-body { padding: 14px 16px; }
.algo-effective-text { font-size: 14px; line-height: 1.8; color: var(--text); }
.algo-effective-hint { font-size: 12px; color: #909399; margin-top: 8px; }
.algo-flow { display: flex; flex-direction: column; gap: 10px; }
.algo-flow-step { display: flex; align-items: flex-start; gap: 12px; padding: 10px 12px; background: #f5f7fa; border-radius: 4px; font-size: 13px; line-height: 1.6; }
.algo-flow-step .num { width: 24px; height: 24px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 12px; flex-shrink: 0; }

@media (max-width: 1200px) {
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .layout-tree-table { grid-template-columns: 1fr; }
}