/* =============================================================
   爱的观察 — UI 风格系统
   品牌色：暖橙 #FF6B6B → 柔粉 #FF8E8E → 蓝紫 #6C5CE7
   字体：系统原生 + 圆润细节
   目标：温暖、亲切、幼教感、移动端友好
   ============================================================= */

:root {
  --primary: #FF6B6B;
  --primary-light: #FF8E8E;
  --primary-dark: #E85D5D;
  --accent: #6C5CE7;
  --accent-light: #A29BFE;
  --bg: #FFF5F5;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FFF0F0;
  --text: #2D3436;
  --text-secondary: #636E72;
  --text-light: #B2BEC3;
  --border: #F0E0E0;
  --shadow: 0 2px 16px rgba(255, 107, 107, 0.08);
  --shadow-hover: 0 4px 24px rgba(255, 107, 107, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --font: -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
}

* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.page { display:none; }
.page.active { display:block; }
/* 登录页需要flex居中，特殊处理 */
#page-login { display:none; min-height:100vh; }
#page-login.active { display:flex; }
#page-main { display:none; min-height:100vh; }
#page-main.active { display:flex; flex-direction:column; }

/* =============================================================
   登录页
   ============================================================= */
#page-login.active {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #FF6B6B 0%, #FFA07A 50%, #6C5CE7 100%);
  position: relative;
  overflow: hidden;
}
.login-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(255,255,255,.15) 0%, transparent 60%),
              radial-gradient(circle at 80% 30%, rgba(255,255,255,.1) 0%, transparent 50%);
}
.login-box {
  position: relative;
  width: 380px;
  max-width: 90vw;
  padding: 48px 36px 40px;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(20px);
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0,0,0,.15);
  text-align: center;
}
.login-icon {
  font-size: 48px;
  margin-bottom: 8px;
  line-height: 1;
}
.login-box h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.login-box .subtitle {
  color: var(--text-light);
  font-size: 13px;
  margin-bottom: 32px;
}
.login-form { text-align: left; }
.login-form input {
  width: 100%;
  padding: 14px 16px;
  margin-bottom: 12px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: var(--font);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  background: var(--bg);
}
.login-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 107, .15);
}
.login-form button {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: transform .15s, box-shadow .2s;
  margin-top: 4px;
}
.login-form button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(255, 107, 107, .35);
}
.login-form button:active {
  transform: translateY(0);
}
.error { color: #e74c3c; font-size: 13px; margin-top: 8px; text-align: center; }

/* =============================================================
   头部导航
   ============================================================= */
header {
  background: #fff;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 1px 8px rgba(0,0,0,.04);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-left h1 {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: var(--radius-xs);
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background .15s, color .15s;
}
.nav-item:hover {
  background: var(--bg);
  color: var(--primary);
}
.nav-icon { font-size: 16px; }
#user-info {
  color: var(--text-light);
  font-size: 12px;
  margin-left: 8px;
}
#nav-role-badge {
  font-size: 12px;
  padding: 4px 10px;
  background: var(--bg);
  border-radius: var(--radius-xs);
}

/* =============================================================
   主内容区
   ============================================================= */
main {
  max-width: 800px;
  margin: 20px auto;
  padding: 0 16px;
  flex: 1;
  width: 100%;
}

/* =============================================================
   通用卡片
   ============================================================= */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 14px;
  box-shadow: var(--shadow);
  transition: box-shadow .2s;
}
.card:hover { box-shadow: var(--shadow-hover); }
.card h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; }
.card h4 { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.card-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

/* =============================================================
   幼儿卡片
   ============================================================= */
.child-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  transition: box-shadow .2s, transform .15s;
}
.child-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}
.child-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,.1);
}
.child-info { flex:1; min-width:0; }
.child-name { font-size: 16px; font-weight: 600; }
.child-meta { font-size: 12px; color: var(--text-light); margin-top: 2px; }

/* =============================================================
   按钮
   ============================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 9px 20px;
  border-radius: var(--radius-xs);
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font);
  font-weight: 500;
  transition: all .15s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
}
.btn-primary:hover {
  box-shadow: 0 4px 12px rgba(255, 107, 107, .3);
  transform: translateY(-1px);
}
.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-outline {
  background: #fff;
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--bg); }
.btn-danger { background: #e74c3c; color: #fff; }

/* =============================================================
   表单
   ============================================================= */
.form-group { margin-bottom: 14px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  background: var(--bg);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 107, .12);
}
.form-group textarea {
  min-height: 80px;
  resize: vertical;
  line-height: 1.6;
}

/* =============================================================
   标签
   ============================================================= */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  border: 1.5px solid #f0e0e0;
  background: #fafafa;
  transition: all .15s;
  user-select: none;
  font-family: var(--font);
}
.tag:hover { border-color: var(--primary); background: #fff5f5; }
.tag.active { 
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-color: transparent;
}

/* 等级按钮 */
.level-btn {
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius-xs);
  border: 1.5px solid var(--border);
  font-size: 12px;
  font-family: var(--font);
  min-width: 44px;
  text-align: center;
  transition: all .15s;
  background: #fff;
}
.level-btn:hover { border-color: var(--primary); }

/* =============================================================
   时间线
   ============================================================= */
.timeline-item {
  border-left: 3px solid var(--primary);
  padding-left: 16px;
  margin-bottom: 14px;
  position: relative;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 4px;
  width: 11px;
  height: 11px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
}
.timeline-date {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.timeline-body {
  background: var(--bg);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
}
.timeline-body .desc { font-size: 14px; line-height: 1.7; }
.timeline-body .meta { font-size: 12px; color: var(--text-light); margin-top: 6px; }

/* =============================================================
   角色标签
   ============================================================= */
.role-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}
.role-teacher { background: #fff0f0; color: var(--primary); }
.role-parent { background: #fef3e2; color: #E67E22; }

/* =============================================================
   等级标签
   ============================================================= */
.level-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 8px;
  font-size: 10px;
  font-weight: 600;
  margin-left: 2px;
  vertical-align: middle;
}
.level-1 { background: #fff3e0; color: #e65100; }
.level-2 { background: #fff8e1; color: #f9a825; }
.level-3 { background: #e8f5e9; color: #2e7d32; }
.level-4 { background: #e3f2fd; color: #1565c0; }
.level-5 { background: #f3e5f5; color: #6a1b9a; }

/* =============================================================
   概览卡片
   ============================================================= */
.stats-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.stats-card .progress-bar {
  flex: 1;
  height: 12px;
  background: var(--bg);
  border-radius: 6px;
  overflow: hidden;
}
.stats-card .progress-fill {
  height: 100%;
  border-radius: 6px;
  transition: width .5s ease;
}

/* 观察概览行 hover */
.stats-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  cursor: pointer;
  border-radius: var(--radius-xs);
  padding: 4px 6px;
  transition: background .15s;
}
.stats-row:hover { background: var(--bg); }

/* =============================================================
   星星评分
   ============================================================= */
.stars { display: flex; gap: 4px; cursor: pointer; }
.star { font-size: 24px; color: #f0e0e0; transition: color .15s; }
.star.on { color: #f39c12; }
.star:hover { color: #f1c40f; }

/* =============================================================
   面包屑
   ============================================================= */
.breadcrumb {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 14px;
}
.breadcrumb a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}
.breadcrumb a:hover { opacity: .8; }

/* =============================================================
   雷达图
   ============================================================= */
#radar-canvas { display: block; margin: 0 auto; max-width: 100%; }

/* =============================================================
   响应式
   ============================================================= */
@media (max-width: 600px) {
  header { padding: 10px 14px; }
  nav { gap: 2px; }
  .nav-item { padding: 4px 8px; font-size: 12px; }
  .nav-label { display: none; }
  .nav-icon { font-size: 18px; }
  .header-left h1 { font-size: 16px; }
  main { margin: 12px auto; padding: 0 12px; }
  .login-box { padding: 32px 24px 28px; }
  .child-card { padding: 12px 14px; }
  .child-avatar { width: 40px; height: 40px; font-size: 18px; }
  .card { padding: 16px; }
  .form-group input,
  .form-group textarea,
  .form-group select { padding: 10px 12px; font-size: 16px; }  /* 防止 iOS 缩放 */
  .stats-row { flex-wrap: wrap; }
}

/* =============================================================
   动画（轻量）
   ============================================================= */

/* =============================================================
   评论/表情回应
   ============================================================= */
.reaction-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}
.reaction-btn {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px 10px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: white;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--font);
}
.reaction-btn:hover {
  background: #fff5f5;
  border-color: #f4c2c2;
}
.reaction-btn .rc {
  font-size: 11px;
  color: var(--text-light);
  margin-left: 1px;
}
.comment-toggle-btn {
  padding: 3px 10px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: white;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.15s;
  margin-left: 4px;
}
.comment-toggle-btn:hover {
  background: #f0f4ff;
  border-color: #A29BFE;
}
.page.active > * { animation: none; }