:root{
  --pink:#ff7aa2;
  --pink-dark:#e85d8a;
  --pink-soft:#ffe3ec;
  --green:#3fae8e;
  --red:#ff5a6e;
  --ink:#4a4350;
  --muted:#9a93a3;
  --bg1:#fff5f8;
  --bg2:#ffeef4;
  --card:#ffffff;
  --line:#f1e6ec;
  --shadow:0 8px 24px rgba(255,122,162,.14);
  --radius:18px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,sans-serif;
  color:var(--ink);
  background:linear-gradient(160deg,var(--bg1),var(--bg2));
  min-height:100vh;
  padding-bottom:84px;
  font-size:15px;
  line-height:1.5;
}
.app-header{
  display:flex;align-items:center;gap:12px;
  padding:18px 18px 12px;
  position:sticky;top:0;z-index:5;
  background:linear-gradient(160deg,rgba(255,245,248,.96),rgba(255,238,244,.92));
  backdrop-filter:blur(8px);
}
.logo{font-size:30px;filter:drop-shadow(0 2px 4px rgba(255,122,162,.3))}
.title-wrap h1{font-size:19px;margin:0;font-weight:800;letter-spacing:.5px}
.title-wrap p{margin:2px 0 0;font-size:12px;color:var(--muted)}

#main{max-width:680px;margin:0 auto;padding:8px 14px 0}
.view-title{font-size:17px;margin:14px 4px 10px;font-weight:800}
.sub-title{font-size:15px;margin:18px 4px 8px;font-weight:700;color:var(--pink-dark)}

.card{
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:16px;
  margin-bottom:14px;
}

/* forms */
.form-card{display:flex;flex-direction:column;gap:12px}
.field{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted);font-weight:600}
.field input,.field select,.field textarea{
  font-size:16px;color:var(--ink);font-weight:500;
  border:1.5px solid var(--line);border-radius:12px;
  padding:11px 12px;background:#fffefc;outline:none;
  transition:border-color .15s,box-shadow .15s;font-family:inherit;width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--pink);box-shadow:0 0 0 3px var(--pink-soft);
}
.field textarea{resize:vertical}
.field.check{flex-direction:row;align-items:center;gap:10px;color:var(--ink);font-weight:600;font-size:15px}
.field.check input{width:20px;height:20px;accent-color:var(--pink)}

.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.habit-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field.half{font-size:13px}

.form-actions{display:flex;gap:10px;margin-top:4px;flex-wrap:wrap}
.btn{
  border:none;border-radius:14px;padding:13px 18px;font-size:15px;font-weight:700;
  cursor:pointer;font-family:inherit;transition:transform .08s,box-shadow .15s,background .15s;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(135deg,var(--pink),var(--pink-dark));color:#fff;box-shadow:0 6px 16px rgba(232,93,138,.35);flex:1;min-width:140px}
.btn-ghost{background:var(--pink-soft);color:var(--pink-dark)}
.btn-danger{background:#fff0f1;color:var(--red);border:1.5px solid #ffd6da;width:100%}
.hint{font-size:12px;color:var(--muted);margin:2px 0 0}
.danger-hint{color:var(--red)}

/* dashboard */
.goal-card{text-align:center}
.goal-card .goal-num{font-size:30px;font-weight:800;color:var(--pink-dark)}
.controls{display:flex;gap:12px;margin-bottom:10px;flex-wrap:wrap}
.controls label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted);font-weight:600;flex:1;min-width:120px}
.controls select{border:1.5px solid var(--line);border-radius:10px;padding:8px 10px;font-size:14px;font-family:inherit;background:#fffefc;color:var(--ink)}
.chart-wrap{position:relative;height:300px}

.latest-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat{background:var(--card);border-radius:16px;box-shadow:var(--shadow);padding:14px;position:relative;overflow:hidden}
.stat::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--pink)}
.stat .label{font-size:12px;color:var(--muted);font-weight:700}
.stat .val{font-size:22px;font-weight:800;margin:4px 0 2px}
.stat .delta{font-size:12px;font-weight:700}
.delta.down{color:var(--green)}
.delta.up{color:var(--red)}
.delta.flat{color:var(--muted)}

/* history */
.history-list{display:flex;flex-direction:column;gap:12px}
.hist-card{background:var(--card);border-radius:16px;box-shadow:var(--shadow);padding:14px}
.hist-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.hist-date{font-weight:800;font-size:15px}
.hist-btns{display:flex;gap:8px}
.mini-btn{font-size:12px;padding:6px 10px;border-radius:9px;border:none;cursor:pointer;font-weight:700;font-family:inherit}
.mini-edit{background:var(--pink-soft);color:var(--pink-dark)}
.mini-del{background:#fff0f1;color:var(--red)}
.hist-metrics{display:flex;flex-wrap:wrap;gap:6px}
.chip{background:#faf3f6;border-radius:9px;padding:4px 9px;font-size:12px;color:var(--ink)}
.chip b{color:var(--pink-dark)}
.hist-note{margin-top:8px;font-size:13px;color:var(--muted);background:#fff8fb;border-radius:10px;padding:8px 10px}
.empty{text-align:center;color:var(--muted);padding:40px 0}

/* weekly */
.week-nav{display:flex;align-items:center;justify-content:space-between;gap:8px}
.week-label{font-weight:800;font-size:15px}
.week-summary table{width:100%;border-collapse:collapse;font-size:14px}
.week-summary th,.week-summary td{padding:9px 6px;text-align:center;border-bottom:1px solid var(--line)}
.week-summary th{color:var(--muted);font-size:12px;font-weight:700}
.week-summary td:first-child{text-align:left;font-weight:700}
.chg.down{color:var(--green);font-weight:800}
.chg.up{color:var(--red);font-weight:800}
.chg.flat{color:var(--muted)}
.week-habit{margin-top:12px;font-size:14px;color:var(--ink);line-height:1.9}

/* settings */
.backup-card .form-actions{margin-top:8px}
.divider{border:none;border-top:1px solid var(--line);margin:16px 0}

/* bottom nav */
.bottom-nav{
  position:fixed;left:0;right:0;bottom:0;z-index:10;
  display:flex;justify-content:space-around;align-items:center;
  background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
  box-shadow:0 -4px 20px rgba(255,122,162,.12);
  padding:8px 4px calc(8px + env(safe-area-inset-bottom));
}
.nav-btn{
  flex:1;border:none;background:none;cursor:pointer;font-family:inherit;
  display:flex;flex-direction:column;align-items:center;gap:3px;
  font-size:11px;color:var(--muted);font-weight:700;padding:4px 0;
}
.nav-ico{
  width:23px;height:23px;stroke:currentColor;fill:none;
  stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;
  transition:transform .15s,stroke-width .15s;
}
.nav-btn.active{color:var(--pink-dark)}
.nav-btn.active .nav-ico{stroke-width:2.2;transform:translateY(-1px)}

/* toast */
.toast{
  position:fixed;left:50%;bottom:96px;transform:translateX(-50%);
  background:rgba(74,67,80,.94);color:#fff;padding:11px 18px;border-radius:12px;
  font-size:14px;font-weight:600;z-index:30;box-shadow:0 6px 18px rgba(0,0,0,.2);
  max-width:80%;text-align:center;
}

/* plan / 健身计划 */
.plan-today-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.plan-today-label{font-size:12px;color:var(--muted);font-weight:700}
.plan-today-week{font-size:22px;font-weight:800;color:var(--pink-dark);margin-top:2px}
.plan-done-badge{background:var(--green);color:#fff;font-size:12px;font-weight:700;padding:5px 11px;border-radius:20px}
.plan-list{display:flex;flex-direction:column;gap:10px;margin-bottom:14px}
.plan-item{display:flex;align-items:flex-start;gap:10px;background:#faf3f6;border-radius:12px;padding:11px 12px;cursor:pointer;transition:background .15s}
.plan-item.checked{background:#eafaf4}
.plan-item.checked .plan-item-name{color:var(--green);text-decoration:line-through}
.plan-item input{width:20px;height:20px;accent-color:var(--pink);margin-top:2px;flex-shrink:0}
.plan-item>span{flex:1;display:flex;flex-direction:column}
.plan-item-name{font-weight:700;font-size:15px}
.plan-item-detail{font-size:12px;color:var(--muted);margin-top:2px;line-height:1.4}
.progress-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.progress-stat{background:#faf3f6;border-radius:14px;padding:12px 6px;text-align:center}
.ps-num{font-size:22px;font-weight:800;color:var(--pink-dark)}
.ps-label{font-size:12px;color:var(--muted);font-weight:600;margin-top:2px}
.tpl-day{border-top:1px solid var(--line);padding:12px 0}
.tpl-day:first-of-type{border-top:none;padding-top:0}
.tpl-day-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.tpl-day-head>span{font-weight:800;font-size:15px}
.tpl-items{display:flex;flex-direction:column;gap:8px}
.tpl-empty{font-size:13px;color:var(--muted);margin:0 0 2px}
.collapsible{cursor:pointer;user-select:none;display:flex;align-items:center;justify-content:space-between}
.caret{transition:transform .2s;font-size:13px;color:var(--pink-dark)}
.caret.collapsed{transform:rotate(-90deg)}
#tplBody.collapsed{display:none}
.tpl-item{display:grid;grid-template-columns:1fr 1fr auto;gap:8px;align-items:center}
.tpl-item input{border:1.5px solid var(--line);border-radius:10px;padding:9px 10px;font-size:14px;font-family:inherit;background:#fffefc;color:var(--ink);width:100%}
.tpl-item input:focus{border-color:var(--pink);box-shadow:0 0 0 3px var(--pink-soft);outline:none}

@media (min-width:560px){
  .metric-grid{grid-template-columns:1fr 1fr 1fr}
  .latest-grid{grid-template-columns:1fr 1fr 1fr}
}
@media (min-width:760px){
  #main{padding-top:14px}
  .bottom-nav{max-width:680px;left:50%;transform:translateX(-50%);border-radius:18px 18px 0 0;bottom:8px}
}