/* iOS San-Francisco 字体，MacOS/Apple简约风格 */
*{box-sizing:border-box;margin:0;padding:0;}
:root{
  --bg:#f5f5f7;
  --card:#ffffff;
  --text:#1d1d1f;
  --text-hint:#86868b;
  --border:#e2e2e5;
  --primary:#007aff;
  --danger:#ff3b30;
  --radius:12px;
  --gap:12px;
}
body{
  font-family:-apple-system,BlinkMacSystemFont,"San Francisco","Helvetica Neue",Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:15px;
  line-height:1.45;
  padding-bottom:80px;
}
#app{max-width:720px;margin:0 auto;padding:12px;}
.app-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;}
.app-header h1{font-size:18px;font-weight:600;}
.tab-nav{display:flex;gap:6px;margin-bottom:14px;overflow-x:auto;}
.tab-btn{
  flex-shrink:0;padding:8px 14px;border:1px solid var(--border);
  background:#fff;border-radius:8px;font-size:14px;
}
.tab-btn.active{background:var(--primary);color:#fff;border-color:var(--primary);}
.page{display:none;}
.page.active{display:block;}
.card{
  background:var(--card);border-radius:var(--radius);
  padding:16px;margin-bottom:14px;
  box-shadow:0 1px 3px rgba(0,0,0,0.06);
}
.card h3{font-size:16px;margin-bottom:12px;font-weight:600;}
.form-row{margin-bottom:12px;}
.form-row label{display:block;margin-bottom:4px;color:#444;}
input,select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--border);
  border-radius:8px;font-size:15px;background:#fff;
  font-family:inherit;
}
textarea{min-height:70px;resize:vertical;}
.btn-group{display:flex;gap:10px;margin-top:14px;}
.btn-group-mt{margin-top:10px;}
button{
  padding:10px 14px;border-none;border-radius:8px;
  font-size:14px;font-family:inherit;cursor:pointer;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-secondary{background:#e8e8ed;color:#222;}
.btn-danger{background:var(--danger);color:#fff;}
.row{display:flex;gap:10px;align-items:center;margin-bottom:12px;flex-wrap:wrap;}
.search-box{margin-bottom:10px;}
.hint-text{font-size:12px;color:var(--text-hint);margin-top:4px;}
.cart-list{margin-top:12px;}
.cart-item{
  display:flex;justify-content:space-between;align-items:center;
  padding:10px;border:1px solid var(--border);border-radius:8px;
  margin-bottom:8px;
}
.modal-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,0.4);
  display:none;align-items:center;justify-content:center;
  padding:16px;z-index:99;
}
.modal-overlay.open{display:flex;}
.modal{
  width:100%;max-width:520px;background:#fff;border-radius:14px;
  padding:20px;max-height:90vh;overflow-y:auto;
}
.modal-large{max-width:640px;}
.modal h3{margin-bottom:14px;}
.modal-btn-bar{display:flex;gap:10px;margin-top:16px;justify-content:flex-end;}
.list-item{
  padding:10px;border-bottom:1px solid var(--border);
  display:flex;justify-content:space-between;align-items:center;
}
.hint-block{padding:10px;background:#efefef;border-radius:8px;font-size:13px;}
#toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%);
  background:#222;color:#fff;padding:10px 16px;border-radius:8px;
  font-size:14px;display:none;z-index:100;
}