:root{
  --bg:#0f1115;--card:#181b21;--muted:#9aa0aa;--text:#f3f5f7;--line:#2a2f38;--accent:#f3f5f7;--danger:#ff6b6b;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text",Segoe UI,sans-serif}
body{min-height:100vh;padding-bottom:90px}
.app-header{padding:calc(env(safe-area-inset-top) + 18px) 18px 10px}
.app-header h1{margin:0;font-size:28px}
.app-header p{margin:5px 0 0;color:var(--muted)}
main{max-width:720px;margin:0 auto;padding:0 14px}
.view{display:none}.view.active{display:block}
.card,fieldset{background:var(--card);border:1px solid var(--line);border-radius:18px;margin:14px 0;padding:16px}
.eyebrow{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.hero-value{font-size:42px;font-weight:800;margin:6px 0}
.muted{color:var(--muted)}
.latest-summary{font-size:18px;line-height:1.45}
button{font:inherit}
.primary{border:0;background:var(--accent);color:#111;border-radius:14px;font-weight:750}
.big{width:100%;padding:16px;font-size:18px}
.secondary{border:1px solid var(--line);background:var(--card);color:var(--text);padding:10px 12px;border-radius:12px}
.text-btn{border:0;background:transparent;color:var(--text);padding:8px 4px}
.text-btn.strong{font-weight:800}.danger{color:var(--danger)}
.form-header{position:sticky;top:0;z-index:5;background:rgba(15,17,21,.94);backdrop-filter:blur(15px);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:10px 0}
.form-header h2{font-size:18px;margin:0;text-align:center}
.form-header>*:first-child{text-align:left}.form-header>*:last-child{text-align:right;justify-self:end}
fieldset{border:1px solid var(--line)}
legend{padding:0 7px;font-weight:750}
label{display:grid;gap:6px;padding:9px 0;color:#dfe3e8}
input,textarea{width:100%;border:1px solid var(--line);border-radius:12px;background:#11141a;color:var(--text);padding:12px;font-size:16px}
textarea{resize:vertical}
.toggle-row{display:flex;align-items:center;justify-content:space-between}
.toggle-row input{width:auto;transform:scale(1.25)}
.bottom-save{margin:10px 0 30px}
.tabbar{position:fixed;left:0;right:0;bottom:0;display:flex;background:rgba(20,23,29,.94);backdrop-filter:blur(18px);padding:8px 10px calc(env(safe-area-inset-bottom) + 8px);border-top:1px solid var(--line);z-index:20}
.tab{flex:1;border:0;background:transparent;color:var(--muted);padding:10px;font-weight:700}
.tab.active{color:var(--text)}
.section-title-row{display:flex;align-items:center;justify-content:space-between}
.history-item{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px;margin:10px 0}
.history-top{display:flex;justify-content:space-between;gap:12px}
.history-title{font-weight:800;font-size:18px}.history-time{font-weight:800}
.empty{text-align:center;color:var(--muted);padding:40px 10px}
.detail-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px;margin:12px 0}
.detail-card h3{margin:0 0 10px}
.row{display:flex;justify-content:space-between;gap:16px;padding:7px 0;border-bottom:1px solid rgba(255,255,255,.05)}
.row:last-child{border-bottom:0}.row span:last-child{text-align:right;color:#c3c8d0}
@media (prefers-color-scheme: light){
  :root{--bg:#f4f5f7;--card:#fff;--muted:#68707b;--text:#111319;--line:#dfe3e8;--accent:#111319}
  .primary{color:white}.form-header{background:rgba(244,245,247,.94)}
  input,textarea{background:#fff;color:#111}
  .tabbar{background:rgba(255,255,255,.94)}
}