* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: #F4F8FF; color: #0E2A47; font-size: 15px;
}
header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 20px; background: #fff; border-bottom: 2px solid #C9DCF5;
}
.brand { font-size: 18px; font-weight: 700; }
.ver { font-size: 12px; color: #7F8C9B; font-weight: normal; margin-left: 8px; }
.door-status { font-size: 13px; display: flex; align-items: center; gap: 8px; }
.light { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.light.closed { background: #5FBF8B; }
.light.open { background: #E8663D; box-shadow: 0 0 6px #E8663D; }

main { display: flex; gap: 16px; padding: 16px 20px; align-items: flex-start; }
.fridge-panel {
  background: #fff; border-radius: 10px; padding: 14px;
  min-width: 520px; width: 45%; box-shadow: 0 2px 8px rgba(20,60,120,.06);
}
.fridge-panel h2, .tabs-panel h2 { font-size: 15px; margin-bottom: 10px; }
.legend { margin-top: 8px; font-size: 12px; color: #7F8C9B; display: flex; gap: 14px; }
.dot { width: 10px; height: 10px; border-radius: 2px; display: inline-block; margin-right: 4px; vertical-align: middle; }
.dot.fz { background: #BFE0FF; } .dot.fg { background: #D9F2E4; }

.tabs-panel { flex: 1; background: #fff; border-radius: 10px; padding: 14px; box-shadow: 0 2px 8px rgba(20,60,120,.06); }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 12px; border-bottom: 1px solid #E3ECF8; }
.tabs button {
  padding: 8px 14px; border: none; background: none; cursor: pointer;
  font-size: 14px; color: #5B7290; border-bottom: 2px solid transparent;
}
.tabs button.active { color: #1E6FEB; border-bottom-color: #1E6FEB; font-weight: 600; }
.tab-page.hidden { display: none; }

.btn {
  padding: 8px 14px; border: 1px solid #9CC0F2; background: #fff; color: #0E2A47;
  border-radius: 6px; cursor: pointer; font-size: 14px;
}
.btn.primary { background: #1E6FEB; color: #fff; border-color: #1E6FEB; }
.btn.small { padding: 4px 10px; font-size: 12px; }
.row { display: flex; gap: 8px; align-items: center; margin: 8px 0; flex-wrap: wrap; }
input, select { padding: 7px 10px; border: 1px solid #C9DCF5; border-radius: 6px; font-size: 14px; }

.dialog-box { padding: 8px; }
.dialog-state { font-size: 13px; color: #7F8C9B; margin-bottom: 8px; }
.dialog-question {
  font-size: 18px; font-weight: 600; background: #EAF2FF; padding: 14px;
  border-radius: 8px; min-height: 54px; margin-bottom: 8px;
}
.dialog-alert { color: #C0392B; font-size: 13px; margin-bottom: 8px; }
.touch-fallback { margin-top: 14px; border-top: 1px dashed #C9DCF5; padding-top: 10px; }
.touch-fallback h4 { font-size: 13px; color: #7F8C9B; margin-bottom: 6px; }

table.grid { width: 100%; border-collapse: collapse; font-size: 13px; }
table.grid th, table.grid td { border: 1px solid #E3ECF8; padding: 6px 8px; text-align: left; }
table.grid th { background: #F0F6FF; }
.warn { color: #C0392B; font-weight: 600; }
.recipe-card { border: 1px solid #E3ECF8; border-radius: 8px; padding: 10px; margin-bottom: 8px; }
.recipe-card h4 { color: #1E6FEB; margin-bottom: 4px; }
.recipe-card .missing { color: #B07A1F; font-size: 12px; }
.warn-box div { padding: 6px 0; border-bottom: 1px dashed #E3ECF8; }
.hint { font-size: 12px; color: #7F8C9B; margin-bottom: 8px; }

/* ---- 登录页 ---- */
.login-mask {
  position: fixed; inset: 0; background: rgba(20,50,100,.35);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.login-mask.hidden { display: none; }
.login-card {
  background: #fff; border-radius: 14px; padding: 30px;
  width: 380px; box-shadow: 0 10px 40px rgba(10,40,90,.25);
}
.login-brand { font-size: 22px; font-weight: 700; text-align: center; margin-bottom: 20px; }
.login-tabs { display: flex; margin-bottom: 18px; border-bottom: 1px solid #E3ECF8; }
.login-tabs button {
  flex: 1; padding: 10px; border: none; background: none; cursor: pointer;
  font-size: 14px; color: #5B7290; border-bottom: 2px solid transparent;
}
.login-tabs button.active { color: #1E6FEB; border-bottom-color: #1E6FEB; font-weight: 600; }
#loginRegister input, #loginLogin input { width: 100%; margin-bottom: 12px; padding: 11px; }
#loginRegister .btn, #loginLogin .btn { width: 100%; padding: 11px; }
.login-msg { color: #C0392B; font-size: 13px; min-height: 18px; margin-top: 6px; }
.login-tip { color: #8AA0BC; font-size: 12px; text-align: center; margin-top: 14px; }
.food-chip { display: inline-block; }

/* ===================== 手机端响应式与触摸适配 ===================== */
@media (max-width: 768px) {
  body { font-size: 15px; background: #fff; }

  header { flex-wrap: wrap; gap: 6px; padding: 10px 12px; }
  .brand { font-size: 16px; width: 100%; }
  .ver { display: block; margin-left: 0; font-size: 11px; }
  .door-status { width: 100%; justify-content: space-between; gap: 6px; font-size: 12px; }
  .door-status .btn { flex: 1; min-height: 40px; }

  main { flex-direction: column; padding: 10px; gap: 12px; }
  .fridge-panel, .tabs-panel {
    width: 100%; min-width: 0; padding: 12px; border-radius: 10px;
  }

  /* 顶部导航：横向滑动，不换行 */
  .tabs {
    flex-wrap: nowrap; overflow-x: auto;
    -webkit-overflow-scrolling: touch; margin-bottom: 10px;
  }
  .tabs button { flex: 0 0 auto; padding: 12px 16px; min-height: 44px; font-size: 15px; }

  /* 触摸目标：按钮、输入框 ≥44px；输入字号 16px 防止 iOS 自动缩放 */
  .btn { min-height: 44px; }
  .btn.small { min-height: 38px; }
  input, select { min-height: 44px; font-size: 16px; width: 100%; }
  .row { gap: 8px; }
  .row .btn { width: 100%; }

  /* 存放示意图：四块改为 2×2 网格（上排冷冻、下排冷藏） */
  #fridgeSvg > div { padding: 4px; }
  #fridgeSvg > div > div { flex-wrap: wrap !important; gap: 6px !important; }
  #fridgeSvg > div > div > div { width: calc(50% - 3px) !important; flex: none !important; }

  .dialog-question { font-size: 16px; padding: 12px; min-height: 48px; }
  .dialog-state { font-size: 12px; }

  /* 宽表格横向滑动 */
  table.grid {
    display: block; overflow-x: auto; white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }
  table.grid th, table.grid td { font-size: 13px; padding: 8px; }

  .recipe-card { padding: 12px; }
  .recipe-card h4 { font-size: 15px; }

  /* 登录卡片 */
  .login-card { width: 92%; padding: 22px 18px; }
  .login-brand { font-size: 20px; }
}

@media (max-width: 360px) {
  .brand { font-size: 15px; }
  #fridgeSvg > div > div > div { width: 100% !important; }
}