:root{
    --iron:#F5F7FA; --panel:#FFFFFF; --panel2:#EEF1F5; --line:#DCE2EA;
    --chalk:#1B2432; --dim:#5D6878; --faint:#93A0B0;
    --plate:#C2410C; --plate-fill:#FF5A1F; --plate-dim:#F0A27C;
    --flag:#C2410C; --miss:#B3261E; --ok:#1F7A33;
    --mono:ui-monospace,'SF Mono',Menlo,Consolas,monospace;
    --sans:-apple-system,system-ui,'Segoe UI',Roboto,sans-serif;
    --r-sm:4px; --r:5px; --r-lg:6px; --r-xl:6px;
    --shadow:0 1px 2px rgba(27,36,50,.04), 0 2px 8px rgba(27,36,50,.05);
    --shadow-lift:0 4px 14px rgba(27,36,50,.09);
  }
  *{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
  html,body{background:var(--iron);color:var(--chalk);font-family:var(--sans);font-size:17px}
  body{padding-top:66px;padding-bottom:24px;min-height:100vh}

  /* ---------- top bar: logo + icon tabs ---------- */
  nav{position:fixed;top:0;left:0;right:0;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);z-index:50;padding-top:env(safe-area-inset-top);box-shadow:0 1px 3px rgba(27,36,50,.04)}
  .nav-inner{max-width:640px;margin:0 auto;display:flex;align-items:center;padding:0 4px;overflow:hidden}
  .nav-logo{flex:0 1 auto;min-width:34px;display:flex;align-items:center;gap:6px;padding:0 4px}
  .nav-wordmark{font-weight:900;letter-spacing:.08em;font-size:10px;text-transform:uppercase;line-height:1.15;color:var(--chalk);white-space:nowrap}
  .nav-wordmark .w2{color:var(--plate)}
  nav button{flex:1 1 0;min-width:0;background:none;border:none;color:var(--dim);font-family:var(--sans);font-size:8.5px;letter-spacing:.02em;text-transform:uppercase;padding:8px 0 6px;font-weight:800;cursor:pointer;position:relative;display:flex;flex-direction:column;align-items:center;gap:3px;overflow:hidden}
  nav button svg{width:20px;height:20px;flex:0 0 auto}
  nav button.active{color:var(--plate)}
  nav button.active::after{content:'';position:absolute;left:28%;right:28%;bottom:0;height:3px;background:var(--plate-fill);border-radius:3px 3px 0 0}
  nav button:focus-visible{outline:2px solid var(--plate);outline-offset:-2px}
  nav button.nav-install{color:var(--plate)}
  nav button.nav-install.hidden{display:none}
  @media (max-width:479px){.nav-wordmark{display:none}}
  @media (max-width:339px){nav button{font-size:0;gap:0}nav button svg{width:22px;height:22px}}

  main{padding:16px;max-width:640px;margin:0 auto}
  .screen{display:none}
  .screen.active{display:block}

  h2{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--dim);margin:22px 0 10px;font-weight:800}
  h2:first-child{margin-top:4px}

  .card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:15px;margin-bottom:11px;box-shadow:var(--shadow)}
  .row{display:flex;align-items:center;justify-content:space-between;gap:10px}
  .muted{color:var(--dim)} .faint{color:var(--faint)}
  .mono{font-family:var(--mono)}
  .big{font-size:28px;font-weight:800;font-family:var(--mono)}
  .small{font-size:12px}

  /* ---------- buttons & inputs ---------- */
  .btn{display:inline-block;background:var(--plate-fill);color:#FFFFFF;border:none;border-radius:var(--r-sm);font-weight:800;font-size:14px;letter-spacing:.06em;padding:14px 18px;cursor:pointer;text-transform:uppercase;font-family:var(--sans);transition:transform .08s ease,filter .15s ease;box-shadow:0 1px 2px rgba(194,65,12,.25)}
  .btn:active{transform:translateY(1px)}
  .btn:hover{filter:brightness(1.04)}
  .btn.block{display:block;width:100%;text-align:center}
  .btn.ghost{background:none;color:var(--chalk);border:1px solid var(--line)}
  .btn.ghost.dimmed{color:var(--dim)}
  .btn.danger{background:none;color:var(--miss);border:1px solid var(--miss)}
  .btn.tint-blue{background:#EAF2FB;color:#1B5FA8;border:1px solid #B8D4EE}
  .btn.tint-amber{background:#FFF4E5;color:#8A5A12;border:1px solid #F0C48A}
  .rm-pick{display:block;width:100%;text-align:left;background:var(--panel2);border:1px solid var(--line);border-left:3px solid var(--plate-fill);border-radius:var(--r);padding:13px 15px;margin-top:9px;cursor:pointer;font-family:var(--sans);transition:border-color .12s}
  .rm-pick:active{border-color:var(--plate)}
  .btn:disabled{opacity:.35}
  .btn:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--plate);outline-offset:2px}
  input,select{background:var(--panel2);border:1px solid var(--line);border-radius:var(--r-sm);color:var(--chalk);font-size:16px;padding:12px;font-family:var(--sans);width:100%;transition:border-color .15s ease,box-shadow .15s ease}
  input:focus,select:focus{outline:none;border-color:var(--plate-fill);box-shadow:0 0 0 3px rgba(255,90,31,.12)}
  input.mono{font-family:var(--mono)}
  input[type=number]{-moz-appearance:textfield}
  input::-webkit-outer-spin-button,input::-webkit-inner-spin-button{-webkit-appearance:none}
  label{display:block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);margin-bottom:5px;font-weight:700}
  .field{margin-bottom:12px}
  .grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}

  /* ---------- today / session ---------- */
  .stamp{font-family:var(--mono);font-weight:800;font-size:13px;color:var(--plate);letter-spacing:.1em}
  .ex-block{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);margin-bottom:10px;overflow:hidden;box-shadow:var(--shadow)}
  .ex-block.ss{border-left:3px solid var(--plate)}
  .ex-head{padding:13px 14px;display:flex;justify-content:space-between;align-items:baseline;gap:8px}
  .ex-name{font-weight:800;font-size:16px}
  .ex-target{font-family:var(--mono);color:var(--dim);font-size:13px;white-space:nowrap}
  .ss-tag{font-size:10px;letter-spacing:.15em;color:var(--plate);text-transform:uppercase;font-weight:800}
  .sets{display:flex;gap:8px;padding:0 14px 8px;flex-wrap:wrap}
  .set-in{width:64px;text-align:center;font-family:var(--mono);font-size:18px;padding:14px 4px;background:var(--panel2);border:1px solid var(--line);border-radius:var(--r-sm);color:var(--chalk);transition:border-color .15s ease,box-shadow .15s ease}
  .set-in:focus{outline:none;border-color:var(--plate-fill);box-shadow:0 0 0 3px rgba(255,90,31,.12)}
  .set-in.done{border-color:var(--plate-dim)}
  .ex-load{display:flex;align-items:center;gap:8px;padding:0 14px 13px}
  .ex-load input{width:84px;text-align:center;font-family:var(--mono)}
  .ex-load .u{color:var(--faint);font-size:12px}

  .feel-row{display:flex;justify-content:space-between;gap:6px;margin-top:8px}
  .feel-row button{flex:1;display:flex;flex-direction:column;align-items:center;gap:5px;background:var(--panel2);border:1px solid var(--line);border-radius:var(--r-sm);padding:11px 2px 8px;cursor:pointer;color:var(--dim);font-family:var(--sans);transition:all .12s ease}
  .feel-row button .feel-ic{color:var(--dim);transition:color .12s}
  .feel-row button span{font-size:10px;font-weight:700;letter-spacing:.01em;color:var(--faint)}
  .feel-row button.sel{border-color:var(--plate);background:#FFEDE3}
  .feel-row button.sel .feel-ic,.feel-row button.sel span{color:var(--plate)}
  .feel-inline{display:inline-flex;align-items:center;gap:5px;vertical-align:middle}
  .feel-inline .feel-ic{color:var(--dim);vertical-align:middle}

  /* ---------- timer ---------- */
  .timer-bar{position:sticky;top:64px;z-index:40;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:10px 12px;margin-bottom:10px;box-shadow:var(--shadow-lift)}
  .t-label{font-size:11px;font-weight:900;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:8px;display:flex;align-items:center}
  .t-main{display:flex;align-items:center;gap:14px}
  .t-disp{flex:1;font-family:var(--mono);font-weight:800;font-size:46px;letter-spacing:-.01em;cursor:pointer;text-align:center}
  .t-disp.done{color:var(--plate)}
  .t-btns{display:flex;gap:8px;flex:none}
  .t-presets{display:grid;grid-template-columns:repeat(3,auto);gap:7px}
  .t-actions{display:grid;grid-template-rows:1fr 1fr;gap:7px}
  .timer-bar button{background:var(--panel2);border:1px solid var(--line);border-radius:var(--r-sm);color:var(--chalk);font-family:var(--sans);font-weight:800;font-size:14px;padding:12px 0;cursor:pointer;min-width:50px}
  .timer-bar button.t-active{border-color:var(--plate);color:var(--plate)}
  .timer-bar button.t-start{background:#1F7A33;border-color:#1F7A33;color:#fff}
  .timer-bar button.t-stop{background:#B3261E;border-color:#B3261E;color:#fff}
  .timer-bar.alarming{border-color:var(--plate-fill);background:#FFF1E8;animation:almpulse .6s ease-in-out infinite alternate}
  @keyframes almpulse{from{box-shadow:0 0 0 0 rgba(255,90,31,.35)}to{box-shadow:0 0 0 8px rgba(255,90,31,0)}}
  @media (prefers-reduced-motion:reduce){.timer-bar.alarming{animation:none}}

  /* ---------- plan editor ---------- */
  .day-nav{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:14px 12px;margin-bottom:12px;box-shadow:var(--shadow)}
  .day-nav .dn-arrow{flex:0 0 auto;width:46px;height:46px;display:flex;align-items:center;justify-content:center;background:var(--panel2);border:1px solid var(--line);color:var(--chalk);border-radius:var(--r-sm);cursor:pointer;font-family:var(--sans);transition:all .12s ease;padding:0}
  .day-nav .dn-arrow:hover{border-color:var(--plate-fill);color:var(--plate-fill)}
  .day-nav .dn-arrow:active{background:var(--plate-fill);border-color:var(--plate-fill);color:#FFFFFF}
  .day-nav .dn-mid{flex:1;text-align:center;min-width:0}
  .day-nav .dn-name{font-weight:900;font-size:19px;color:#15803D;letter-spacing:.01em}
  .day-nav .dn-dots{display:flex;justify-content:center;gap:6px;margin-top:8px}
  .day-nav .dn-dot{width:28px;height:28px;border-radius:50%;background:var(--panel2);border:1px solid var(--line);color:var(--faint);font-family:var(--sans);font-weight:800;font-size:12px;line-height:1;display:flex;align-items:center;justify-content:center;padding:0;cursor:pointer;transition:all .12s ease}
  .day-nav .dn-dot.has{background:var(--plate-fill);border-color:var(--plate-fill);color:#FFFFFF}
  .day-nav .dn-dot.on{background:#16A34A;border-color:#16A34A;color:#FFFFFF;box-shadow:0 0 0 3px rgba(22,163,74,.18)}
  .plan-ex{border-top:1px solid var(--line);padding:12px 0}
  .plan-ex:first-of-type{border-top:none}
  .plan-ex .row{margin-bottom:2px}
  .icon-btn{background:none;border:1px solid var(--line);color:var(--dim);border-radius:var(--r-sm);padding:7px 11px;font-size:13px;cursor:pointer;font-family:var(--sans);transition:all .12s ease}

  /* ---------- reports ---------- */
  .flagline{display:flex;gap:10px;align-items:flex-start;padding:11px 0;border-top:1px solid var(--line)}
  .flagline:first-child{border-top:none}
  .flagline .dot{flex:0 0 auto;width:9px;height:9px;border-radius:50%;margin-top:5px}
  .dot.ok{background:var(--ok)} .dot.flag{background:var(--flag)} .dot.miss{background:var(--miss)}
  .statgrid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
  .stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:13px;box-shadow:var(--shadow)}
  .stat .v{font-family:var(--mono);font-size:24px;font-weight:800}
  .stat .k{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-top:3px;font-weight:700}
  .seg{display:flex;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;margin-bottom:14px}
  .seg button{flex:1;background:none;border:none;color:var(--dim);padding:11px 0;font-weight:800;font-size:12px;letter-spacing:.1em;text-transform:uppercase;cursor:pointer;font-family:var(--sans)}
  .seg button.active{background:var(--panel2);color:var(--plate)}
  svg.chart{width:100%;height:auto;display:block;margin-top:8px}
  .ledger{font-size:14px}
  .ledger .lrow{display:block;padding:11px 0;border-top:1px solid var(--line);cursor:pointer}
  .ledger .lrow:first-child{border-top:none}
  .lrow-main{display:flex;justify-content:space-between;gap:10px;font-weight:700;font-family:var(--sans)}
  .lrow-sub{color:var(--faint);font-size:12px;margin-top:3px;font-family:var(--sans)}
  .sess-detail{background:var(--panel2);border-radius:var(--r-sm);padding:4px 12px 10px;margin:0 0 8px;font-family:var(--sans)}
  .sd-row{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px dashed var(--line);font-size:14px;align-items:baseline}
  .sd-row:last-of-type{border-bottom:none}
  .sd-row .sd-name{font-weight:700;flex:1}
  .sd-row .sd-sets{font-family:var(--mono)}
  .sd-row .sd-load{color:var(--faint);font-size:12px;white-space:nowrap}
  .sd-meta{padding-top:10px;font-size:13px;color:var(--dim)}
  .mrow{background:var(--panel2);margin:0 -14px;padding:11px 14px !important;font-family:var(--sans);display:flex;justify-content:space-between;gap:10px;align-items:baseline}

  .empty{color:var(--faint);text-align:center;padding:34px 16px;font-size:14px;line-height:1.6}
  .demo-bar{display:none;align-items:center;justify-content:space-between;gap:10px;background:#FFF4E5;border:1px solid #F0C48A;border-radius:var(--r);padding:10px 12px;margin:12px 16px 0;max-width:608px}
  @media(min-width:672px){.demo-bar{margin:12px auto 0}}
  .demo-bar.show{display:flex}
  .demo-bar-text{font-size:13px;color:#7A5A1A;line-height:1.4}
  .demo-bar-text b{font-weight:800}
  .demo-bar-clear{flex:none;border:1px solid #D8AB52;background:#fff;color:#8A5A12;border-radius:var(--r-sm);padding:7px 13px;font-family:var(--sans);font-weight:800;font-size:12px;cursor:pointer}
  .toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:#1E1E1C;color:#FFFFFF;font-weight:800;font-size:13px;padding:11px 18px;border-radius:99px;z-index:99;opacity:0;transition:opacity .25s;pointer-events:none;white-space:nowrap}
  .toast.show{opacity:1}
  .modal-wrap{position:fixed;inset:0;background:rgba(27,36,50,.45);z-index:99;display:none;align-items:center;justify-content:center;padding:24px}
  .modal-wrap.show{display:flex}
  .modal-box{background:var(--panel);border-radius:var(--r-lg);padding:20px;max-width:340px;width:100%;box-shadow:0 18px 50px rgba(27,36,50,.35);max-height:calc(100vh - 48px);max-height:calc(100dvh - 48px);overflow-y:auto;transition:max-width .15s ease}
  .modal-wrap.wide .modal-box{max-width:600px}
  .modal-text{font-size:15px;line-height:1.5;margin-bottom:16px;white-space:pre-line}
  .modal-actions{display:flex;gap:10px}
  .modal-actions button{flex:1;border:none;border-radius:var(--r-sm);padding:14px;font-family:var(--sans);font-weight:800;font-size:14px;letter-spacing:.06em;text-transform:uppercase;cursor:pointer}
  .modal-ok{background:var(--miss);color:#fff}
  .modal-cancel{background:var(--panel2);color:var(--chalk);border:1px solid var(--line) !important}
  .welcome-wrap{position:fixed;inset:0;background:rgba(27,36,50,.55);z-index:200;display:none;align-items:center;justify-content:center;padding:22px}
  .welcome-wrap.show{display:flex}
  .welcome-box{background:var(--panel);border-radius:var(--r-xl);padding:28px 24px 24px;max-width:380px;width:100%;box-shadow:0 24px 60px rgba(27,36,50,.4);text-align:left;max-height:92vh;overflow-y:auto}
  .welcome-mark{text-align:center;font-weight:900;letter-spacing:.18em;font-size:15px;text-transform:uppercase}
  .welcome-mark span{color:var(--plate)}
  .welcome-tag{text-align:center;color:var(--faint);font-size:11px;letter-spacing:.14em;text-transform:uppercase;margin-top:4px}
  .welcome-lead{text-align:center;color:var(--dim);font-size:15px;line-height:1.5;margin:14px 0 20px}
  .welcome-steps{display:flex;flex-direction:column;gap:14px;margin-bottom:18px}
  .welcome-step{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--dim);line-height:1.5}
  .welcome-step b{color:var(--chalk);font-weight:800}
  .welcome-step .ws-num{flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--plate-fill);color:#fff;font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;margin-top:1px}
  .welcome-privacy{text-align:center;color:var(--faint);font-size:12px;line-height:1.5;margin:0 0 18px}
  .hint-i{display:inline-flex;align-items:center;justify-content:center;width:17px;height:17px;border-radius:50%;border:1.5px solid var(--faint);background:none;color:var(--dim);font-size:11px;font-weight:800;font-style:italic;font-family:Georgia,serif;line-height:1;cursor:pointer;padding:0;vertical-align:middle;margin-left:6px;flex:none}
  .hint-i:active{border-color:var(--plate);color:var(--plate)}
  .privacy-shield{display:flex;gap:14px;align-items:flex-start;background:linear-gradient(135deg,#1B2432,#25303F);border-radius:var(--r-lg);padding:18px;margin-bottom:16px;color:#fff}
  .privacy-shield svg{width:34px;height:34px;flex:none;color:var(--plate-fill)}
  .privacy-shield .ps-title{font-weight:800;font-size:15px}
  .privacy-shield .ps-sub{color:#A9B4C2;font-size:13px;line-height:1.5;margin-top:3px}
  .acc{border-top:1px solid var(--line)}
  .acc:first-child{border-top:none}
  .acc-head{width:100%;background:none;border:none;display:flex;justify-content:space-between;align-items:center;gap:10px;padding:15px 16px;cursor:pointer;font-family:var(--sans);font-weight:800;font-size:15px;color:var(--chalk);text-align:left}
  .acc-caret{font-family:var(--mono);font-size:19px;color:var(--plate);flex:0 0 auto;line-height:1}
  .acc-body{padding:0 16px 15px;line-height:1.6;color:var(--dim);font-size:15px}
  .acc-body b{color:var(--chalk)}
  .app-footer{text-align:center;color:var(--faint);font-size:12px;line-height:1.7;padding:26px 16px 10px;margin-top:12px;border-top:1px solid var(--line)}
  .app-footer a{color:var(--dim)}
  .footer-shield{display:inline-flex;align-items:center;gap:5px;margin-top:8px;color:var(--plate);font-weight:700}
  .footer-shield svg{width:13px;height:13px}
  .rest-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 26px 34px;text-align:center;margin-top:8px}
  .rest-art{width:180px;max-width:70%;height:auto;display:block;margin:0 auto 14px}
  .rest-title{font-weight:900;font-size:22px;letter-spacing:-.01em}
  .rest-sub{color:var(--dim);font-size:15px;line-height:1.55;max-width:34ch;margin:8px auto 0}
  .rest-hint{color:var(--faint);font-size:13px;margin-top:14px}
  .plan-builder{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:0 0 16px;margin-top:20px;overflow:hidden;box-shadow:var(--shadow)}
  .pb-head{background:linear-gradient(135deg,#1B2432,#25303F);padding:16px 18px}
  .wipe-list{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel)}
  .wipe-row{display:flex;width:100%;align-items:center;justify-content:space-between;gap:12px;padding:11px 14px;background:var(--panel);border:none;border-top:1px solid var(--line);cursor:pointer;text-align:left;font-family:var(--sans);transition:background .12s ease}
  .wipe-row:first-child{border-top:none}
  .wipe-row .wr-title{display:block;font-weight:800;font-size:15px;color:var(--chalk);text-transform:none;letter-spacing:0;line-height:1.25}
  .wipe-row .wr-sub{display:block;font-size:12px;color:var(--dim);text-transform:none;letter-spacing:0;font-weight:400;line-height:1.35;margin-top:2px}
  .wipe-row.erase{background:#FFF6F5}
  .wr-seg{display:flex;flex:none;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:var(--panel)}
  .wr-seg button{border:none;background:transparent;font-family:var(--sans);font-weight:800;font-size:12px;letter-spacing:.05em;text-transform:uppercase;padding:9px 16px;cursor:pointer;color:var(--faint)}
  .wipe-row.erase .wr-seg .seg-erase{background:var(--miss);color:#FFFFFF}
  .wipe-row.keep .wr-seg .seg-keep{background:#16A34A;color:#FFFFFF}
  .pb-mode{display:flex;align-items:center;gap:10px;background:#F0FDF4;border:1px solid #16A34A;border-radius:var(--r-sm);padding:10px 12px;margin:14px 14px 0;flex-wrap:wrap}
  .pb-mode .pm-name{flex:1;font-weight:800;color:#15803D;font-size:14px;min-width:120px}
  .btn.green{background:#16A34A;box-shadow:0 1px 2px rgba(22,163,74,.25)}
  .plan-builder .day-nav{margin:14px 14px 0;box-shadow:none;background:var(--panel2)}
  .plan-builder .day-nav .dn-arrow,.plan-builder .day-nav .dn-dot{background:var(--panel)}
  .plan-builder .day-nav .dn-dot.has{background:var(--plate-fill)}
  .plan-builder .day-nav .dn-dot.on{background:#16A34A}
  .plan-builder .card{margin:14px 14px 0;border-color:var(--line)}
  @media (prefers-reduced-motion:reduce){.toast{transition:none}}