/* ============================================================
   FMEA Pro — 主样式
   基于AIAG-VDA新版七步法
   ============================================================ */

:root {
  --primary: #1a6bcc;
  --primary-dark: #1456a8;
  --primary-light: #e8f0fb;
  --success: #27a55e;
  --warning: #e87d1e;
  --danger: #d93025;
  --info: #0891b2;
  --purple: #7c3aed;
  --bg: #f0f2f5;
  --surface: #ffffff;
  --border: #dde1e7;
  --text: #1a1f36;
  --text-sub: #6b7280;
  --ap-h: #d93025;
  --ap-m: #e87d1e;
  --ap-l: #27a55e;
  --sidebar-w: 260px;
  --topbar-h: 54px;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

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

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  line-height: 1.5;
}

/* ---- 顶部导航 ---- */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--topbar-h);
  background: #0f1629;
  display: flex; align-items: center;
  padding: 0 20px;
  gap: 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.topbar-left { display: flex; align-items: center; gap: 12px; min-width: 280px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-img-box {
  width: 42px; height: 42px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  border: 1px dashed rgba(255,255,255,0.2);
  transition: all 0.2s;
  overflow: hidden;
  flex-shrink: 0;
}
.logo-img-box:hover { border-color: var(--primary); background: rgba(26,107,204,0.2); }
.logo-text-box { display: flex; flex-direction: column; gap: 1px; }
.logo-icon { font-size: 22px; color: rgba(255,255,255,0.5); }
.logo-text { font-size: 18px; font-weight: 700; color: #fff; letter-spacing: 1px; line-height: 1; }
.logo-sub { color: var(--primary); }
.company-name { font-size: 10px; color: #7eb8ff; font-weight: 500; max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.version-badge {
  background: rgba(26,107,204,0.3);
  color: #7eb8ff;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 12px;
  border: 1px solid rgba(26,107,204,0.5);
  white-space: nowrap;
}
.topbar-center {
  flex: 1;
  text-align: center;
  color: #9ca3af;
  font-size: 14px;
  font-weight: 500;
}
.topbar-right { display: flex; gap: 6px; align-items: center; }
.topbar-actions { display: flex; gap: 2px; align-items: center; }
.tb-btn {
  padding: 5px 10px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.06);
  color: #d1d5db;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.15s;
  white-space: nowrap;
  font-family: inherit;
}
.tb-btn:hover { background: rgba(255,255,255,0.12); color: #fff; }
.tb-btn.tb-save {
  background: rgba(26,107,204,0.5);
  border-color: rgba(59,130,246,0.4);
  color: #93c5fd;
  font-weight: 600;
}
.tb-btn.tb-save:hover { background: rgba(37,99,235,0.7); color: #fff; }
.tb-btn.tb-logout {
  padding: 5px 8px;
  font-size: 14px;
}
.tb-divider {
  width: 1px;
  height: 22px;
  background: rgba(255,255,255,0.12);
  margin: 0 4px;
}
.topbar-user {
  display: flex;
  align-items: center;
  gap: 6px;
}
.tb-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
}
.btn-sm { padding: 5px 12px; font-size: 11.5px; }

/* ---- 布局 ---- */
.app-layout {
  display: flex;
  margin-top: var(--topbar-h);
  min-height: calc(100vh - var(--topbar-h));
}

/* ---- 侧边栏 ---- */
.sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  position: fixed;
  top: var(--topbar-h);
  left: 0;
  bottom: 0;
  overflow-y: auto;
  padding-bottom: 50px;
}
.sidebar-section { padding: 14px 12px; border-bottom: 1px solid var(--border); }
.sidebar-title {
  font-size: 10.5px;
  font-weight: 700;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

/* 侧边栏按钮 */
.sidebar-btn {
  width: 100%;
  padding: 7px 10px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 500;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s;
  font-family: inherit;
  margin-bottom: 3px;
}
.sidebar-btn-primary {
  background: var(--primary);
  color: #fff;
}
.sidebar-btn-primary:hover { background: var(--primary-dark); }
.sidebar-btn-info {
  background: #f0f9ff;
  color: #0369a1;
  border: 1px solid #bae6fd;
}
.sidebar-btn-info:hover { background: #e0f2fe; }
.sidebar-btn-ghost {
  background: transparent;
  color: #475569;
}
.sidebar-btn-ghost:hover { background: #f1f5f9; color: #1e293b; }
.sidebar-btn-warn {
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
}
.sidebar-btn-warn:hover { background: #fef3c7; }

/* 侧边栏底部 */
.sidebar-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.sidebar-support {
  display: block;
  text-align: center;
  color: #94a3b8;
  text-decoration: none;
  font-size: 11.5px;
  padding: 4px 0 8px;
  transition: color 0.15s;
}
.sidebar-support:hover { color: #07c160; }

/* ---- 七步骤导航 ---- */
.steps-nav { display: flex; flex-direction: column; gap: 2px; }
.step-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s;
  position: relative;
}
.step-item:hover { background: var(--primary-light); }
.step-item.active {
  background: var(--primary);
  color: #fff;
}
.step-item.active .step-desc { color: rgba(255,255,255,0.75); }
.step-num {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: rgba(0,0,0,0.1);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 12px;
  flex-shrink: 0;
}
.step-item.active .step-num { background: rgba(255,255,255,0.25); }
.step-item.done .step-num { background: var(--success); color: #fff; }
.step-info { flex: 1; min-width: 0; }
.step-name { font-size: 12px; font-weight: 600; }
.step-desc { font-size: 11px; color: var(--text-sub); }
.step-status { font-size: 10px; color: var(--text-sub); }
.step-item.active .step-status { color: rgba(255,255,255,0.6); }

/* ---- 项目列表 ---- */
.project-list { margin-top: 8px; display: flex; flex-direction: column; gap: 4px; }
.project-item {
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  border: 1px solid var(--border);
  background: #f8f9fa;
  display: flex; align-items: center; justify-content: space-between;
}
.project-item:hover { border-color: var(--primary); background: var(--primary-light); }
.project-item.active { border-color: var(--primary); background: var(--primary-light); font-weight: 600; }
.project-del { color: var(--danger); cursor: pointer; font-size: 14px; }

/* ---- 主内容区 ---- */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 24px;
  padding-bottom: 50px;
  min-height: calc(100vh - var(--topbar-h));
}

/* ---- 步骤面板 ---- */
.step-panel { display: none; }
.step-panel.active { display: block; }

.panel-header { margin-bottom: 20px; }
.panel-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.panel-header h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.panel-desc { color: var(--text-sub); font-size: 13px; }

/* ---- 表单 ---- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  background: var(--surface);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group.span-2 { grid-column: span 2; }
.form-group.span-4 { grid-column: span 4; }
label { font-size: 12px; font-weight: 600; color: var(--text-sub); }
input[type="text"], input[type="date"], select, textarea {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); }
textarea { resize: vertical; }

/* ---- 信息提示框 ---- */
.info-box {
  background: #e8f4fd;
  border-left: 4px solid var(--primary);
  padding: 12px 16px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 20px;
  font-size: 12.5px;
  line-height: 1.8;
  color: #1a3a6b;
}

/* ---- 工具栏 ---- */
.toolbar {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.toolbar select {
  flex: 0 0 auto;
  min-width: 260px;
}

/* ---- 按钮 ---- */
.btn {
  padding: 7px 16px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 500;
  transition: all 0.15s;
  white-space: nowrap;
  font-family: inherit;
}
.btn:hover { opacity: 0.85; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-info { background: var(--info); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-full { width: 100%; margin-bottom: 6px; }
.btn-large { padding: 10px 24px; font-size: 14px; }

/* ---- 结构树 ---- */
.structure-tree {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 20px;
}
.tree-header {
  display: grid;
  grid-template-columns: 70px 1fr 1fr 120px 100px;
  background: #f0f2f5;
  padding: 10px 16px;
  font-weight: 600;
  font-size: 12px;
  color: var(--text-sub);
  border-bottom: 1px solid var(--border);
  gap: 8px;
}
.tree-row {
  display: grid;
  grid-template-columns: 70px 1fr 1fr 120px 100px;
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
  align-items: center;
  font-size: 12.5px;
}
.tree-row:last-child { border-bottom: none; }
.tree-row:hover { background: #f8f9fa; }
.tree-row.level-1 { background: #fef9e7; border-left: 4px solid #f39c12; }
.tree-row.level-2 { padding-left: 28px; border-left: 4px solid var(--primary); }
.tree-row.level-3 { padding-left: 44px; background: #f0f8ff; border-left: 4px solid #7ec8e3; }
.level-badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}
.badge-l1 { background: #fef3cd; color: #856404; }
.badge-l2 { background: var(--primary-light); color: var(--primary-dark); }
.badge-l3 { background: #d1ecf1; color: #0c5460; }

/* ---- FMEA表格 ---- */
.table-scroll {
  overflow-x: auto;
  margin-bottom: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.fmea-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  font-size: 12.5px;
}
.fmea-table th {
  background: #1a2035;
  color: #d1d5db;
  padding: 9px 10px;
  text-align: left;
  font-weight: 600;
  font-size: 11.5px;
  border: 1px solid #2d3748;
  white-space: nowrap;
  position: sticky; top: 0; z-index: 2;
}
.fmea-table td {
  padding: 8px 10px;
  border: 1px solid var(--border);
  vertical-align: middle;
}
.fmea-table tr:hover td { background: #f8f9fa; }
.fmea-table td input, .fmea-table td select, .fmea-table td textarea {
  width: 100%;
  border: 1px solid transparent;
  background: transparent;
  padding: 3px 5px;
  font-size: 12.5px;
  border-radius: 4px;
}
.fmea-table td input:focus, .fmea-table td select:focus, .fmea-table td textarea:focus {
  border-color: var(--primary);
  background: #fff;
  outline: none;
}
.fmea-table td textarea { resize: vertical; min-height: 50px; }

/* AP 颜色 */
.ap-H { background: #fde8e8 !important; color: var(--ap-h); font-weight: 700; text-align: center; }
.ap-M { background: #fef3cd !important; color: var(--ap-m); font-weight: 700; text-align: center; }
.ap-L { background: #e8f8f0 !important; color: var(--ap-l); font-weight: 700; text-align: center; }
.score-cell { text-align: center; font-weight: 700; }
.score-high { color: var(--danger); }
.score-med { color: var(--warning); }
.score-low { color: var(--success); }

/* AP图例 */
.ap-legend {
  display: flex; gap: 12px; margin-bottom: 16px; flex-wrap: wrap;
}
.ap-item {
  padding: 6px 14px; border-radius: 20px; font-size: 12px; font-weight: 600;
}
.ap-h { background: #fde8e8; color: var(--ap-h); border: 1px solid #f5c6c6; }
.ap-m { background: #fef3cd; color: var(--ap-m); border: 1px solid #fde68a; }
.ap-l { background: #e8f8f0; color: var(--ap-l); border: 1px solid #a7f3d0; }

/* ---- 步骤操作按钮 ---- */
.step-actions {
  display: flex; gap: 12px; justify-content: flex-end;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-top: 16px;
}

/* ---- 汇总卡片 ---- */
.summary-grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 16px; margin-bottom: 24px;
}
.summary-card {
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
}
.card-num { font-size: 36px; font-weight: 700; line-height: 1; margin-bottom: 6px; }
.card-label { font-size: 12px; font-weight: 500; opacity: 0.8; }
.card-blue { background: #dbeafe; color: #1e40af; }
.card-red { background: #fde8e8; color: var(--ap-h); }
.card-yellow { background: #fef3cd; color: var(--ap-m); }
.card-green { background: #e8f8f0; color: var(--ap-l); }
.card-purple { background: #ede9fe; color: var(--purple); }

/* ---- 图表区 ---- */
.chart-row {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; margin-bottom: 24px;
}
.chart-box {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.chart-box h3 { font-size: 13px; color: var(--text-sub); margin-bottom: 12px; }

.export-row {
  display: flex; gap: 12px; justify-content: center;
  margin-top: 24px;
}

/* ---- 弹窗 ---- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 999;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
}
.modal-box {
  background: var(--surface);
  border-radius: 12px;
  width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  padding: 24px;
}
.modal-large { width: 900px; }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; }
.modal-close {
  background: none; border: none; cursor: pointer;
  font-size: 18px; color: var(--text-sub);
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
}
.modal-close:hover { background: #f0f0f0; }
.modal-footer {
  display: flex; gap: 10px; justify-content: flex-end;
  margin-top: 20px; padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ---- 知识库工具栏 ---- */
.library-toolbar {
  display: flex; gap: 8px; align-items: center;
  margin-bottom: 14px; flex-wrap: wrap;
}
.library-toolbar select { min-width: 160px; }
.library-toolbar input { flex: 1; min-width: 180px; }

/* ---- 评分弹窗 ---- */
.scoring-tabs {
  display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap;
}
.tab-btn {
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: transparent;
  cursor: pointer;
  font-size: 12.5px;
  font-family: inherit;
}
.tab-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.scoring-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.scoring-table th {
  background: #f0f2f5; padding: 8px 10px;
  border: 1px solid var(--border); text-align: left; font-weight: 600;
}
.scoring-table td { padding: 7px 10px; border: 1px solid var(--border); }
.scoring-table tr:nth-child(even) td { background: #f8f9fa; }

/* ---- Toast ---- */
.toast {
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%);
  background: #1a2035; color: #fff;
  padding: 10px 24px; border-radius: 24px;
  font-size: 13px; z-index: 9999;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  animation: fadeIn 0.3s;
}
@keyframes fadeIn { from { opacity: 0; transform: translateX(-50%) translateY(10px); } }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .sidebar { width: 220px; }
  .main-content { margin-left: 220px; }
  .summary-grid { grid-template-columns: repeat(3, 1fr); }
  .chart-row { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: repeat(2, 1fr); }
  .form-group.span-4 { grid-column: span 2; }
}

/* ---- LOGO上传区域 ---- */
.logo-upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: #f8f9fa;
}
.logo-upload-area:hover { border-color: var(--primary); background: var(--primary-light); }

/* ---- 知识库导入/导出 ---- */
.import-section {
  background: #f8f9fa;
  border-radius: var(--radius);
  padding: 16px;
  border: 1px solid var(--border);
}
.import-section h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.file-drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: #fff;
}
.file-drop-zone:hover { border-color: var(--primary); }

/* ---- 打印样式 ---- */
@media print {
  .topbar, .sidebar, .toolbar, .step-actions,
  .export-row, .btn, .steps-nav, .sidebar-section { display: none !important; }
  .main-content { margin-left: 0; padding: 10px; }
  .step-panel { display: block !important; }
}

/* ---- 数字输入框居中 ---- */
input[type="number"] {
  text-align: center; width: 60px;
  padding: 4px; font-weight: 700; font-size: 14px;
}

/* 风险矩阵颜色 */
.s-9, .s-10 { color: #c0392b; font-weight: 700; }
.s-7, .s-8 { color: #e67e22; font-weight: 700; }
.s-5, .s-6 { color: #f39c12; }
.s-1, .s-2, .s-3, .s-4 { color: #27ae60; }

/* 可编辑高亮 */
.editable-cell { cursor: pointer; }
.editable-cell:hover { background: #fffbe6 !important; }

/* 空状态 */
.empty-state {
  text-align: center; padding: 40px;
  color: var(--text-sub); font-size: 13px;
}
.empty-state .empty-icon { font-size: 40px; margin-bottom: 10px; }