/* 研思向导 H5演示原型 — 全局样式 */

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

:root {
  --primary: #2563eb;
  --primary-light: #dbeafe;
  --primary-dark: #1e3a8a;
  --success: #16a34a;
  --success-light: #d1fae5;
  --warning: #eab308;
  --warning-light: #fef9c3;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(0,0,0,.07);
  --shadow-lg: 0 4px 16px rgba(0,0,0,.12);
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.7;
  min-height: 100vh;
}

/* ===== 导航栏 ===== */
.navbar {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 12px rgba(37,99,235,.25);
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar .logo { font-size: 1.15rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.navbar .logo .icon { font-size: 1.4rem; }
.navbar .nav-links { display: flex; gap: 4px; flex-wrap: wrap; }
.navbar .nav-links a {
  color: rgba(255,255,255,.85);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: .85rem;
  transition: all .2s;
}
.navbar .nav-links a:hover, .navbar .nav-links a.active {
  background: rgba(255,255,255,.18);
  color: #fff;
}

/* ===== 容器 ===== */
.container { max-width: 960px; margin: 0 auto; padding: 28px 20px 60px; }

/* ===== 页面标题 ===== */
.page-title {
  font-size: 1.4rem;
  color: var(--gray-900);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.page-title .badge {
  font-size: .72rem;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 600;
}
.page-subtitle { color: var(--gray-500); font-size: .88rem; margin-bottom: 24px; }

/* ===== 卡片 ===== */
.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.card h3 { font-size: 1rem; color: var(--primary-dark); margin-bottom: 12px; }
.card .tip {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: .85rem;
  color: var(--primary-dark);
  margin-top: 12px;
}
.card .warn {
  background: var(--warning-light);
  border-left: 4px solid var(--warning);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: .85rem;
  color: #713f12;
  margin-top: 12px;
}

/* ===== 模块卡片网格（首页）===== */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 20px;
}
.module-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: all .25s;
  border: 2px solid transparent;
  display: block;
}
.module-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.module-card .num {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 700;
  margin-bottom: 12px;
}
.module-card h3 { font-size: 1.05rem; margin-bottom: 6px; color: var(--gray-900); }
.module-card p { font-size: .85rem; color: var(--gray-500); margin-bottom: 8px; }
.module-card .produce {
  font-size: .78rem;
  color: var(--success);
  background: var(--success-light);
  padding: 3px 10px;
  border-radius: 4px;
  display: inline-block;
}

/* ===== 表单元素 ===== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: .88rem; color: var(--gray-600); margin-bottom: 6px; font-weight: 600; }
.form-group textarea, .form-group input[type="text"], .form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  font-size: .88rem;
  font-family: inherit;
  transition: border-color .2s;
}
.form-group textarea:focus, .form-group input:focus, .form-group select:focus {
  outline: none;
  border-color: var(--primary);
}
.form-group textarea { min-height: 100px; resize: vertical; }

/* 标签选择器 */
.tag-selector { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-selector .tag {
  padding: 5px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: 20px;
  font-size: .82rem;
  cursor: pointer;
  transition: all .2s;
  user-select: none;
}
.tag-selector .tag:hover { border-color: var(--primary); }
.tag-selector .tag.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== 按钮 ===== */
.btn {
  padding: 10px 24px;
  border: none;
  border-radius: 8px;
  font-size: .88rem;
  font-family: inherit;
  cursor: pointer;
  transition: all .2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-success { background: var(--success); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: .82rem; }

/* ===== 对话区 ===== */
.chat-area {
  background: var(--gray-50);
  border-radius: var(--radius);
  padding: 16px;
  min-height: 200px;
  max-height: 400px;
  overflow-y: auto;
}
.chat-msg { margin-bottom: 12px; max-width: 85%; }
.chat-msg.bot {
  background: #fff;
  border: 1.5px solid var(--gray-200);
  border-radius: 12px 12px 12px 4px;
  padding: 12px 16px;
  font-size: .88rem;
}
.chat-msg.user {
  background: var(--primary);
  color: #fff;
  border-radius: 12px 12px 4px 12px;
  padding: 10px 14px;
  font-size: .88rem;
  margin-left: auto;
}
.chat-input-area { display: flex; gap: 8px; margin-top: 12px; }
.chat-input-area input { flex: 1; }

/* ===== 图谱画布 ===== */
#theory-graph { width: 100%; height: 420px; background: #fff; border-radius: var(--radius); }

/* ===== 模型画布 ===== */
.model-canvas {
  width: 100%;
  height: 400px;
  background: var(--gray-50);
  border: 2px dashed var(--gray-200);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}
.canvas-node {
  position: absolute;
  background: #fff;
  border: 2px solid var(--primary);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: .85rem;
  font-weight: 600;
  cursor: move;
  user-select: none;
  box-shadow: var(--shadow);
  z-index: 10;
}
.canvas-node .node-type {
  font-size: .68rem;
  color: var(--gray-400);
  display: block;
}
.canvas-node.iv { border-color: #dc2626; }
.canvas-node.dv { border-color: #2563eb; }
.canvas-node.med { border-color: #eab308; }
.canvas-node.mod { border-color: #16a34a; }

/* 节点删除按钮：默认半隐，hover 或选中时明显 */
.canvas-node .node-del {
  position: absolute;
  top: -8px; right: -8px;
  width: 18px; height: 18px;
  line-height: 16px;
  text-align: center;
  border-radius: 50%;
  background: var(--danger);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  cursor: pointer;
  opacity: 0;
  transition: opacity .15s;
  user-select: none;
}
.canvas-node:hover .node-del { opacity: 1; }
.canvas-node .node-del:hover { background: #b91c1c; }

/* 编辑中的节点 */
.canvas-node.editing {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .25), var(--shadow);
  cursor: default;
}

/* 已有关系列表 */
.link-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.link-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: .82rem;
}
.link-item .link-text { flex: 1; color: var(--gray-700); }
.link-item .link-del {
  color: var(--danger);
  cursor: pointer;
  font-weight: 700;
  padding: 0 4px;
}
.link-item .link-del:hover { color: #b91c1c; }
.canvas-svg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 5;
}

/* ===== 假设诊断面板 ===== */
.hypothesis-item {
  background: #fff;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 12px;
}
.hypothesis-item .h-num { font-weight: 700; color: var(--primary-dark); font-size: .9rem; }
.hypothesis-item .h-text { font-size: .88rem; margin: 6px 0; }
.hypothesis-item .h-meta { font-size: .78rem; color: var(--gray-500); }
.hypothesis-item .h-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: .72rem;
  font-weight: 600;
  margin-left: 6px;
}
.h-badge.pass { background: var(--success-light); color: var(--success); }
.h-badge.fail { background: var(--danger-light); color: var(--danger); }
.h-badge.warn { background: var(--warning-light); color: #92400e; }

/* ===== 工作簿 ===== */
.workbook-section { margin-bottom: 24px; }
.workbook-section h3 {
  font-size: 1rem;
  color: var(--primary-dark);
  border-bottom: 2px solid var(--gray-100);
  padding-bottom: 8px;
  margin-bottom: 12px;
}
.workbook-content {
  background: var(--gray-50);
  border-radius: 8px;
  padding: 16px;
  font-size: .88rem;
  white-space: pre-wrap;
  min-height: 60px;
}

/* ===== 流程步骤指示器 ===== */
.steps {
  display: flex;
  gap: 0;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.step {
  flex: 1;
  min-width: 120px;
  text-align: center;
  padding: 8px;
  position: relative;
  font-size: .82rem;
  color: var(--gray-400);
}
.step.active { color: var(--primary); font-weight: 600; }
.step.done { color: var(--success); }
.step .step-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--gray-200);
  color: var(--gray-500);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .82rem; font-weight: 700;
  margin-bottom: 4px;
}
.step.active .step-num { background: var(--primary); color: #fff; }
.step.done .step-num { background: var(--success); color: #fff; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .navbar { flex-direction: column; gap: 10px; }
  .navbar .nav-links { justify-content: center; }
  .module-grid { grid-template-columns: 1fr; }
  .container { padding: 16px 12px 40px; }
}