:root{
  --bg:#f6f6f4; --surface:#ffffff; --surface2:#efeee9; --line:rgba(0,0,0,.10);
  --text:#1c1c1a; --muted:#6b6a64; --faint:#9a988f;
  --green:#3b6d11; --greenDot:#639922; --amber:#854f0b; --amberDot:#ef9f27;
  --red:#a32d2d; --redDot:#e24b4a; --redBg:#fcebeb; --amberBg:#faeeda; --tealBg:#e1f5ee; --tealTx:#0f6e56;
  --accent:#0f6e56;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#1a1a18; --surface:#242421; --surface2:#2e2e2a; --line:rgba(255,255,255,.12);
  --text:#f0efe9; --muted:#a8a69d; --faint:#76746c; --redBg:#3a1a1a; --amberBg:#3a2c10; --tealBg:#0e3329; --tealTx:#5dcaa5;}
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
.app{max-width:680px;margin:0 auto;min-height:100vh;background:var(--bg);padding-bottom:84px}
header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px 8px;position:sticky;top:0;background:var(--bg);z-index:5}
.h-title{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:600}
.h-title .ic{font-size:22px;color:var(--muted)}
.icon-btn{background:none;border:none;color:var(--muted);font-size:21px;cursor:pointer;padding:6px;border-radius:8px}
.icon-btn:active{background:var(--surface2)}
section{padding:0 20px}
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(96px,1fr));gap:10px;margin:8px 0 18px}
@media(max-width:520px){.metrics{grid-template-columns:1fr 1fr}}
.metric{background:var(--surface2);border-radius:12px;padding:12px 14px}
.metric .lbl{font-size:12.5px;color:var(--muted)}
.metric .val{font-size:24px;font-weight:600;margin-top:2px}
.card{background:var(--surface);border:.5px solid var(--line);border-radius:14px;padding:6px 16px 8px;margin-bottom:16px}
.chips{display:flex;gap:7px;flex-wrap:wrap;padding:4px 0 10px}
.chip{font-size:12.5px;padding:4px 12px;border-radius:20px;border:.5px solid var(--line);color:var(--muted);background:none;cursor:pointer}
.chip.on{background:var(--text);color:var(--bg);border-color:var(--text);font-weight:500}
.row{display:flex;align-items:center;gap:11px;padding:11px 0;border-top:.5px solid var(--line);cursor:pointer}
.row:first-of-type{border-top:none}
.dot{width:9px;height:9px;border-radius:50%;flex-shrink:0}
.box{font-size:18px;flex-shrink:0;color:var(--faint)}
.row .body{flex:1;min-width:0}
.row .nm{font-size:14.5px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .nm .ovr{font-size:12.5px;color:var(--muted);font-weight:400}
.daybadge{display:inline-block;font-size:10.5px;font-weight:600;padding:1px 6px;border-radius:6px;background:var(--tealBg);color:var(--tealTx);margin-right:6px;vertical-align:1px}
.daybadge.learned{background:transparent;border:.5px solid var(--tealTx);font-weight:500}
.row .sub{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pill{font-size:11px;padding:2px 9px;border-radius:20px;white-space:nowrap;flex-shrink:0;font-weight:500}
.pill.red{background:var(--redBg);color:var(--red)} .pill.amber{background:var(--amberBg);color:var(--amber)} .pill.green{background:var(--tealBg);color:var(--tealTx)} .pill.gray{background:var(--surface2);color:var(--muted)}
.quick{flex-shrink:0;width:34px;height:34px;border-radius:10px;border:.5px solid var(--line);background:var(--surface2);color:var(--text);font-size:17px;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0}
.quick:active{background:var(--accent);color:#fff;border-color:var(--accent)}
.rowpin{flex-shrink:0;width:34px;height:34px;border-radius:10px;border:.5px solid var(--line);background:none;font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0;opacity:.45}
.rowpin.on{opacity:1;background:var(--tealBg);border-color:var(--accent)}
.more{text-align:center;padding:11px 0 6px;border-top:.5px solid var(--line);font-size:12.5px;color:var(--faint);cursor:pointer}
.more:active{color:var(--text)}
.sec-label{font-size:13px;font-weight:600;color:var(--muted);margin:2px 0 2px}
nav{position:fixed;bottom:0;left:0;right:0;max-width:680px;margin:0 auto;display:flex;background:var(--surface);border-top:.5px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
nav button{flex:1;background:none;border:none;padding:9px 0 8px;cursor:pointer;color:var(--faint);display:flex;flex-direction:column;align-items:center;gap:3px}
nav button.on{color:var(--text)}
nav .ic{font-size:22px} nav .lb{font-size:10.5px;font-weight:500}
.crumb{display:flex;align-items:center;gap:10px;padding:16px 20px 6px;font-size:13px;color:var(--muted)}
.crumb .bk{font-size:21px;cursor:pointer}
.dt-title{font-size:22px;font-weight:600;padding:4px 20px 0}
.cat{display:inline-block;font-size:11.5px;padding:3px 11px;border-radius:20px;background:var(--tealBg);color:var(--tealTx);margin:8px 20px 0}
.predict{margin:14px 20px 0;background:var(--surface2);border-radius:14px;padding:16px;display:flex;align-items:center;gap:14px}
.predict .pdot{width:12px;height:12px;border-radius:50%;flex-shrink:0}
.predict .pl{flex:1}.predict .pl .k{font-size:12.5px;color:var(--muted)}.predict .pl .v{font-size:22px;font-weight:600}
.predict .pr{text-align:right}.predict .pr .n{font-size:22px;font-weight:600}.predict .pr .k{font-size:11.5px;color:var(--muted)}
.friction{margin:12px 20px 0;display:flex;gap:10px;background:var(--amberBg);border-radius:10px;padding:11px 13px}
.friction .ic{font-size:18px;color:var(--amber);flex-shrink:0}
.friction .k{font-size:11.5px;color:var(--amber);font-weight:600}.friction .t{font-size:13.5px;color:var(--amber)}
.dayline{margin:12px 20px 0;display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted)}
.dayline.on{color:var(--text)}
.dayline .cic{font-size:16px}
.dayline .dcount{margin-left:auto;font-size:12px;color:var(--faint)}
.stats{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin:16px 20px 0}
.stat{background:var(--surface2);border-radius:10px;padding:11px 12px}.stat .k{font-size:12px;color:var(--muted)}.stat .v{font-size:19px;font-weight:600}
.act{margin:18px 20px 0}
.act button{width:100%;padding:13px;border-radius:11px;border:none;background:var(--accent);color:#fff;font-size:14.5px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px}
.act button:active{opacity:.85}
.hist-h{font-size:14px;font-weight:600;margin:20px 20px 4px}
.hist{padding:0 20px}
.hist .h-row{display:flex;align-items:center;gap:11px;padding:9px 0;border-top:.5px solid var(--line);cursor:pointer}
.hist .h-row:first-child{border-top:none}
.hist .hd{font-size:14px;flex:1}.hist .hg{font-size:12px;color:var(--muted)}
.hist .hx{margin-left:6px;background:none;border:none;color:var(--faint);font-size:18px;line-height:1;cursor:pointer;padding:2px 7px;border-radius:6px}
.hist .hx:active{color:var(--red);background:var(--surface2)}
.empty{color:var(--faint);font-size:13px;padding:8px 20px 0}
.toast{position:fixed;bottom:96px;left:50%;transform:translateX(-50%);background:var(--text);color:var(--bg);font-size:13px;padding:9px 10px 9px 16px;border-radius:22px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:20;display:flex;align-items:center;gap:12px}
.toast.show{opacity:1;pointer-events:auto}
.toast .u{background:rgba(255,255,255,.16);color:var(--bg);border:none;font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:16px;cursor:pointer}
.ti{font-style:normal}
#login{display:none;position:fixed;inset:0;background:var(--bg);z-index:50;align-items:center;justify-content:center;padding:24px}
.loginbox{width:100%;max-width:340px;text-align:center}
.logintitle{font-size:22px;font-weight:600;margin-bottom:4px}
.loginlogo{margin-bottom:14px;line-height:0}
.loginsub{font-size:13.5px;color:var(--muted);margin-bottom:20px}
#login input{width:100%;padding:11px 12px;border:.5px solid var(--line);border-radius:10px;background:var(--surface);color:var(--text);font-size:15px;font-family:inherit}
.loginor{font-size:12px;color:var(--faint);margin:14px 0}
.loginmsg{font-size:12.5px;color:var(--muted);margin-top:12px;min-height:16px}
.edit-btn{margin-left:auto;background:none;border:none;color:var(--muted);font-size:18px;cursor:pointer;padding:4px 6px}
.edit-btn+.edit-btn{margin-left:0}
.pinbtn.on{color:var(--accent)}
.pinmark{font-size:11px}
.row.done{opacity:.6}
.row.done .nm{text-decoration:line-through}
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:flex-end;justify-content:center;z-index:30}
@media(min-width:560px){.modal-bg{align-items:center}}
.modal{background:var(--surface);width:100%;max-width:480px;border-radius:18px 18px 0 0;padding:20px 20px 24px;max-height:92vh;overflow:auto}
@media(min-width:560px){.modal{border-radius:18px}}
.modal h3{margin:0 0 16px;font-size:18px;font-weight:600}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;padding:11px 12px;border:.5px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);font-size:15px;font-family:inherit}
.field textarea{resize:vertical;min-height:58px}
.check{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text);cursor:pointer}
.check input{width:auto}
.modal-actions{display:flex;gap:10px;margin-top:20px}
.btn{padding:12px;border-radius:11px;border:none;font-size:14.5px;font-weight:600;cursor:pointer}
.btn.primary{background:var(--accent);color:#fff;flex:1}
.btn.ghost{background:var(--surface2);color:var(--text);flex:1}
.btn.danger{background:none;color:var(--red);border:.5px solid var(--line);width:48px;font-size:17px}