:root{
    --primary:#594FBF;
    --dark:#2D1F7B;
    --light:#F7F6FA;
    --gold:#FFC94D;
    --good:#4CC671;
    --warn:#F2C94C;
    --crit:#F2994A;
    --danger:#EB5757;
  }
  *{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
  html,body{min-height:100%;background:var(--dark)}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
    color:var(--light);user-select:none;-webkit-user-select:none;
    background:
      radial-gradient(ellipse at 20% -10%,rgba(122,111,227,.35),transparent 55%),
      radial-gradient(ellipse at 90% 110%,rgba(89,79,191,.3),transparent 50%),
      var(--dark);
    background-attachment:fixed;
  }

  #app{max-width:900px;margin:0 auto;padding:14px 14px calc(20px + env(safe-area-inset-bottom));min-height:100dvh;display:flex;flex-direction:column}

  /* ---------- Header ---------- */
  header{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px;flex-wrap:wrap}
  .brandRow{display:flex;align-items:center;gap:10px}
  .logoPaw{width:40px;height:40px;border-radius:13px;flex:none;
    background:linear-gradient(150deg,#6c61de,var(--primary) 60%,#463c9e);
    display:flex;align-items:center;justify-content:center;font-size:20px;
    box-shadow:0 6px 16px rgba(20,12,60,.55),inset 0 1px 0 rgba(255,255,255,.25)}
  .brandName{font-size:11px;font-weight:800;letter-spacing:4px;color:#B9B2EC}
  .gameName{font-size:18px;font-weight:900;line-height:1.05;
    background:linear-gradient(180deg,#fff,#CFC9F5);-webkit-background-clip:text;background-clip:text;
    -webkit-text-fill-color:transparent}
  #petTabs{display:flex;gap:6px;flex-wrap:wrap}
  .petTab{border:1.5px solid rgba(247,246,250,.22);background:rgba(45,31,123,.55);color:var(--light);
    border-radius:999px;padding:7px 14px;font-weight:800;font-size:13px;cursor:pointer;font-family:inherit}
  .petTab.active{background:linear-gradient(180deg,#7A6FE3,var(--primary) 55%,#4a41a5);border-color:rgba(255,255,255,.35)}
  .petTab:disabled{opacity:.4;cursor:default}

  /* ---------- Cards / overlays ---------- */
  .overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;z-index:40;
    background:radial-gradient(ellipse at 50% 40%,rgba(89,79,191,.28),rgba(30,20,80,.72));
    backdrop-filter:blur(3px);padding:14px}
  .overlay.hidden{display:none}
  .card{background:linear-gradient(165deg,rgba(45,31,123,.96),rgba(34,24,96,.96));
    border:1.5px solid rgba(247,246,250,.18);border-radius:28px;
    padding:28px 26px 24px;text-align:center;color:var(--light);
    box-shadow:0 24px 70px rgba(15,9,50,.6),inset 0 1px 0 rgba(247,246,250,.12);
    width:min(94vw,440px);max-height:calc(100dvh - 24px);overflow-y:auto;
    animation:pop .45s cubic-bezier(.2,1.4,.4,1)}
  @keyframes pop{from{transform:scale(.85) translateY(16px);opacity:0}to{transform:none;opacity:1}}
  .card h1{font-size:clamp(24px,6vw,32px);font-weight:900;letter-spacing:.5px;margin-bottom:8px;
    background:linear-gradient(180deg,#fff,#CFC9F5);-webkit-background-clip:text;background-clip:text;
    -webkit-text-fill-color:transparent}
  .card .tagline{font-size:13.5px;color:#CFC9F5;margin-bottom:18px;line-height:1.5}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;cursor:pointer;font-family:inherit;
    font-size:16px;font-weight:900;letter-spacing:1px;color:#fff;
    background:linear-gradient(180deg,#7A6FE3,var(--primary) 55%,#4a41a5);
    padding:13px 34px;border-radius:999px;
    box-shadow:0 8px 22px rgba(50,38,140,.55),inset 0 1px 0 rgba(255,255,255,.35),inset 0 -3px 0 rgba(28,18,80,.45);
    transition:transform .12s}
  .btn:hover{transform:translateY(-2px)}
  .btn:active{transform:translateY(1px) scale(.97)}
  .btn:disabled{opacity:.45;cursor:default;transform:none}
  .btn.ghost{background:rgba(247,246,250,.08);border:1.5px solid rgba(247,246,250,.22);
    box-shadow:none;font-weight:800}
  /* Auth form (login/register overlay) */
  #authForm input{width:100%;box-sizing:border-box;font-family:inherit;font-size:15px;
    color:#fff;background:rgba(247,246,250,.08);border:1.5px solid rgba(247,246,250,.22);
    border-radius:12px;padding:11px 13px;outline:none;transition:border-color .12s}
  #authForm input:focus{border-color:var(--primary)}
  #authForm input::placeholder{color:rgba(247,246,250,.4)}
  #authForm .btn{margin-top:4px}
  .authTab{font-family:inherit;font-size:14px;font-weight:800;cursor:pointer;color:#fff;
    background:rgba(247,246,250,.06);border:1.5px solid rgba(247,246,250,.18);
    border-radius:999px;padding:7px 16px;transition:background .12s,border-color .12s}
  .authTab.active{background:linear-gradient(180deg,#7A6FE3,var(--primary));border-color:transparent}

  /* ---------- Adoption ---------- */
  .animalRow{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:16px}
  .animalCard{border:2px solid rgba(247,246,250,.18);border-radius:18px;cursor:pointer;
    background:rgba(247,246,250,.05);padding:8px 4px 8px;font-family:inherit;color:var(--light);transition:transform .12s}
  .animalCard.selected{border-color:var(--gold);background:rgba(255,201,77,.1);transform:translateY(-3px)}
  .animalCard canvas{width:72px;height:64px;image-rendering:auto;max-width:100%}
  .animalCard .nm{font-weight:900;font-size:12.5px;margin-top:2px}
  .fieldLbl{display:block;text-align:left;font-size:11.5px;font-weight:800;letter-spacing:1.5px;color:#B9B2EC;margin:14px 2px 6px}
  #petName{width:100%;padding:12px 14px;border-radius:14px;border:1.5px solid rgba(247,246,250,.22);
    background:rgba(247,246,250,.08);color:var(--light);font-size:16px;font-weight:700;font-family:inherit;outline:none}
  #petName:focus{border-color:#7A6FE3}
  .segRow{display:flex;gap:8px}
  .seg{flex:1;padding:10px;border-radius:14px;border:1.5px solid rgba(247,246,250,.22);cursor:pointer;
    background:rgba(247,246,250,.05);color:var(--light);font-family:inherit;font-weight:800;font-size:13.5px}
  .seg.selected{border-color:var(--gold);background:rgba(255,201,77,.12)}
  .seg small{display:block;font-weight:600;font-size:10.5px;color:#B9B2EC;margin-top:3px}
  #adoptBtn{margin-top:20px;width:100%}
  .errMsg{color:#FF9B9B;font-size:13px;font-weight:700;margin-top:10px;min-height:16px}

  /* ---------- Main game ---------- */
  #main{display:none;flex-direction:column;gap:12px}
  #main.visible{display:flex}

  #statusBar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;
    background:rgba(45,31,123,.55);border:1.5px solid rgba(247,246,250,.18);border-radius:16px;padding:9px 14px}
  #statusBar .petTitle{font-weight:900;font-size:16px}
  #statusBar .meta{font-size:12px;color:#CFC9F5;font-weight:700;display:flex;gap:12px;flex-wrap:wrap}
  .sickBadge{background:var(--danger);color:#fff;font-size:10px;font-weight:900;letter-spacing:1px;
    border-radius:999px;padding:3px 9px;display:none}

  #gameGrid{display:grid;grid-template-columns:170px 1fr 170px;gap:12px;align-items:stretch}
  .statCol{display:flex;flex-direction:column;gap:10px;justify-content:center}
  .stat{background:rgba(45,31,123,.55);border:1.5px solid rgba(247,246,250,.14);border-radius:14px;padding:8px 11px}
  .stat .row1{display:flex;justify-content:space-between;font-size:11px;font-weight:800;letter-spacing:.8px;color:#CFC9F5;margin-bottom:5px}
  .stat .val{font-variant-numeric:tabular-nums;color:var(--light)}
  .meter{height:9px;border-radius:999px;background:rgba(0,0,0,.35);overflow:hidden}
  .meter i{display:block;height:100%;border-radius:999px;background:var(--good);width:80%;
    transition:width .8s ease,background-color .4s}
  .meter.warn i{background:var(--warn)}
  .meter.crit i{background:var(--crit)}
  .meter.danger i{background:var(--danger);animation:flash 1s infinite}
  @keyframes flash{50%{opacity:.45}}

  #stage{position:relative;border-radius:22px;overflow:hidden;min-height:280px;
    border:1.5px solid rgba(247,246,250,.18);
    background:linear-gradient(180deg,#57C2F0 0%,#8ED8F5 52%,#7BC47F 52.5%,#5BA860 100%);
    cursor:pointer}
  #stage.night{background:linear-gradient(180deg,#1a1440 0%,#2c2260 52%,#274a2e 52.5%,#1d3a24 100%)}
  #petCanvas{position:absolute;inset:0;width:100%;height:100%;display:block}
  #sleepHint{position:absolute;top:10px;left:0;right:0;text-align:center;font-weight:900;font-size:13px;
    color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.5);letter-spacing:2px;display:none}
  #tapHint{position:absolute;bottom:8px;left:0;right:0;text-align:center;font-size:11px;font-weight:700;
    color:rgba(255,255,255,.85);text-shadow:0 1px 4px rgba(0,0,0,.4);pointer-events:none}

  #actionBar{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
  .actBtn{flex:1;min-width:86px;max-width:150px;border:1.5px solid rgba(247,246,250,.22);cursor:pointer;
    background:rgba(45,31,123,.55);color:var(--light);border-radius:16px;padding:10px 6px;
    font-family:inherit;font-weight:800;font-size:13px;display:flex;flex-direction:column;align-items:center;gap:3px;
    transition:transform .1s}
  .actBtn span.ico{font-size:20px}
  .actBtn:hover{transform:translateY(-2px)}
  .actBtn:active{transform:scale(.95)}
  .actBtn:disabled{opacity:.4;cursor:default;transform:none}

  #catchUp{display:none;background:rgba(255,201,77,.12);border:1.5px solid rgba(255,201,77,.5);
    border-radius:16px;padding:11px 14px;font-size:13px;line-height:1.55;color:#FFE7B0}
  #catchUp b{color:var(--gold)}
  #catchUp button{float:right;background:none;border:none;color:var(--gold);font-weight:900;cursor:pointer;font-size:14px}

  /* ---------- Active duration effects ---------- */
  #fxRow{display:none;gap:6px;flex-wrap:wrap}
  #fxRow.visible{display:flex}
  .fxChip{background:rgba(122,111,227,.18);border:1.5px solid rgba(122,111,227,.55);color:#CFC9F5;
    border-radius:999px;padding:5px 12px;font-size:11.5px;font-weight:800;display:inline-flex;align-items:center;gap:5px}
  .fxChip b{color:var(--light)}

  /* ---------- Items modal ---------- */
  #itemsModal .card{width:min(94vw,480px);text-align:left}
  .catTabs{display:flex;gap:6px;margin-bottom:14px;flex-wrap:wrap}
  .catTab{border:1.5px solid rgba(247,246,250,.22);background:rgba(247,246,250,.05);color:var(--light);
    border-radius:999px;padding:7px 14px;font-weight:800;font-size:12.5px;cursor:pointer;font-family:inherit}
  .catTab.active{background:linear-gradient(180deg,#7A6FE3,var(--primary) 55%,#4a41a5)}
  .itemRow{display:flex;align-items:center;gap:12px;padding:10px 6px;border-bottom:1px solid rgba(247,246,250,.1)}
  .itemRow:last-child{border-bottom:none}
  .itemIco{width:42px;height:42px;flex:none;border-radius:12px;background:rgba(247,246,250,.09);
    display:flex;align-items:center;justify-content:center;font-size:22px}
  .itemInfo{flex:1;min-width:0}
  .itemInfo .inm{font-weight:900;font-size:14.5px}
  .itemInfo .ifx{font-size:11.5px;color:#B9B2EC;font-weight:700}
  .useBtn{border:none;cursor:pointer;font-family:inherit;font-weight:900;font-size:12.5px;letter-spacing:.5px;
    color:#fff;background:linear-gradient(180deg,#7A6FE3,var(--primary) 55%,#4a41a5);
    border-radius:999px;padding:8px 18px}
  .useBtn:disabled{opacity:.4;cursor:default}
  .buyBtn{border:1.5px solid rgba(255,201,77,.65);cursor:pointer;font-family:inherit;font-weight:900;
    font-size:12px;letter-spacing:.3px;color:var(--gold);background:rgba(255,201,77,.1);
    border-radius:999px;padding:7px 14px;white-space:nowrap}
  .buyBtn:disabled{opacity:.4;cursor:default}
  .ownBadge{background:rgba(255,201,77,.16);color:var(--gold);border-radius:999px;font-size:10.5px;
    font-weight:900;padding:2px 8px;margin-left:6px;vertical-align:middle}
  #shopBalance{font-size:12.5px;font-weight:800;color:var(--gold);margin-right:10px}
  #shopHint{font-size:11.5px;color:#B9B2EC;line-height:1.5;margin-top:10px;text-align:center}
  .modalHead{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
  .modalHead h2{font-size:18px;font-weight:900}
  .xBtn{background:none;border:none;color:#B9B2EC;font-size:22px;cursor:pointer;line-height:1}
  #itemsEmpty{text-align:center;color:#B9B2EC;font-size:13px;padding:18px 0}

  /* ---------- Sickness ---------- */
  #stage.sick #petCanvas{filter:saturate(.45) brightness(.9)}

  /* ---------- Exercise (§4.6) ---------- */
  #exerciseBar{display:none;flex-direction:column;gap:6px;margin-top:12px;
    background:rgba(20,14,60,.85);border:1.5px solid rgba(247,246,250,.25);border-radius:14px;padding:9px 12px}
  #exerciseBar.visible{display:flex}
  #exerciseBar .exRow{display:flex;align-items:center;justify-content:space-between;gap:10px;
    font-size:12px;font-weight:800;color:#CFC9F5}
  #exerciseBar .exCancel{border:1.5px solid rgba(247,246,250,.3);background:none;color:var(--light);
    border-radius:999px;padding:4px 12px;font-family:inherit;font-weight:800;font-size:11.5px;cursor:pointer}
  .exMeter{height:8px;border-radius:999px;background:rgba(0,0,0,.4);overflow:hidden}
  .exMeter i{display:block;height:100%;width:0;background:linear-gradient(90deg,#7A6FE3,var(--gold));
    border-radius:999px;transition:width 1s linear}
  #exerciseModal .card{width:min(94vw,420px)}
  .exOpt{width:100%;display:flex;align-items:center;gap:12px;text-align:left;cursor:pointer;font-family:inherit;
    color:var(--light);background:rgba(247,246,250,.06);border:2px solid rgba(247,246,250,.18);
    border-radius:18px;padding:12px 14px;margin-top:10px;transition:transform .1s}
  .exOpt:hover{transform:translateY(-2px)}
  .exOpt:disabled{opacity:.45;cursor:default;transform:none}
  .exOpt .exIco{font-size:26px;flex:none}
  .exOpt .exNm{font-weight:900;font-size:15px}
  .exOpt .exFx{font-size:11.5px;color:#B9B2EC;font-weight:700;margin-top:2px}
  .exOpt.premium{border-color:rgba(255,201,77,.55);background:rgba(255,201,77,.08)}
  .exOpt.premium .exNm{color:var(--gold)}

  /* ---------- Tutorial (first run) ---------- */
  #tutOverlay{position:fixed;inset:0;z-index:80}
  #tutOverlay.hidden{display:none}
  #tutRing{position:absolute;border:2.5px solid var(--gold);border-radius:18px;
    box-shadow:0 0 0 9999px rgba(12,7,40,.74),0 0 22px rgba(255,201,77,.55);
    transition:all .35s cubic-bezier(.4,1.3,.5,1);pointer-events:none}
  #tutCard{position:absolute;width:min(86vw,320px);background:linear-gradient(165deg,rgba(45,31,123,.98),rgba(34,24,96,.98));
    border:1.5px solid rgba(255,201,77,.5);border-radius:18px;padding:14px 16px;
    box-shadow:0 14px 40px rgba(10,6,35,.6)}
  #tutStep{font-size:10.5px;font-weight:900;letter-spacing:2px;color:var(--gold);margin-bottom:5px}
  #tutText{font-size:13.5px;line-height:1.55;color:var(--light);font-weight:600}
  .tutBtns{display:flex;justify-content:space-between;align-items:center;margin-top:12px}
  #tutSkip{background:none;border:none;color:#B9B2EC;font-weight:800;font-size:12.5px;cursor:pointer;font-family:inherit}
  #tutNext{padding:8px 22px;font-size:13px;letter-spacing:.5px}

  /* ---------- Header audio toggles ---------- */
  .hdrIcons{display:flex;align-items:center;gap:6px}
  .iconBtn{width:34px;height:34px;border-radius:11px;border:1.5px solid rgba(247,246,250,.22);cursor:pointer;
    background:rgba(45,31,123,.55);font-size:15px;display:flex;align-items:center;justify-content:center;
    font-family:inherit;padding:0}
  .iconBtn.off{opacity:.4}

  /* ---------- Death / memorial ---------- */
  #deathOverlay{background:radial-gradient(ellipse at 50% 40%,rgba(45,31,123,.4),rgba(8,5,26,.9))}
  .deathStats{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin:14px 0 6px}
  .deathStats .ds{background:rgba(247,246,250,.06);border:1px solid rgba(247,246,250,.1);border-radius:10px;
    padding:7px 4px;font-size:10px;font-weight:800;letter-spacing:.4px;color:#B9B2EC}
  .deathStats .ds b{display:block;font-size:15px;color:var(--light);margin-top:2px}
  #memorialModal .card{width:min(94vw,480px);text-align:left}
  .memCard{display:flex;gap:12px;align-items:flex-start;padding:12px 4px;border-bottom:1px solid rgba(247,246,250,.1)}
  .memCard:last-child{border-bottom:none}
  .memCard canvas{width:72px;height:64px;flex:none}
  .memInfo{flex:1;min-width:0}
  .memInfo .mnm{font-weight:900;font-size:15px}
  .memInfo .mrow{font-size:11.5px;color:#B9B2EC;font-weight:700;line-height:1.5;margin-top:2px}
  .memInfo .mrow b{color:#CFC9F5}

  /* ---------- Leaderboard (§11) ---------- */
  #leaderboardModal .card{width:min(94vw,520px);text-align:left}
  .lbFilters{display:flex;gap:6px;margin-bottom:12px;flex-wrap:wrap;align-items:center}
  .lbFilters select{border:1.5px solid rgba(247,246,250,.22);background:rgba(20,14,60,.9);color:var(--light);
    border-radius:999px;padding:6px 10px;font-family:inherit;font-size:12px;font-weight:800;cursor:pointer;margin-left:auto}
  #lbList{max-height:56vh;overflow-y:auto}
  .lbRow{display:flex;gap:10px;align-items:center;padding:8px 6px;border-bottom:1px solid rgba(247,246,250,.08);font-size:13px}
  .lbRow:last-child{border-bottom:none}
  .lbRow .rk{flex:none;width:46px;color:#B9B2EC;font-variant-numeric:tabular-nums;font-weight:800}
  .lbRow.top1 .rk{color:#FFD35C}
  .lbRow.top2 .rk{color:#D9D6EE}
  .lbRow.top3 .rk{color:#E2A05C}
  .lbRow.mine{background:rgba(255,201,77,.12);border-radius:8px}
  .lbRow .sp{flex:none;font-size:17px}
  .lbRow .who{flex:1;min-width:0}
  .lbRow .who .pnm{display:block;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .lbRow .who .own{display:block;font-size:11px;color:#B9B2EC;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .lbRow .life{flex:none;text-align:right;font-weight:800;white-space:nowrap}
  .lbRow .life .st{display:block;font-size:10.5px;font-weight:700;color:#B9B2EC}

  /* ---------- Say Goodbye (release) ---------- */
  #goodbyeRow{text-align:center;margin-top:12px}
  #btnRelease{background:none;border:none;color:#8F87C4;font-family:inherit;font-size:12px;
    font-weight:700;cursor:pointer;padding:6px 12px;border-radius:8px}
  #btnRelease:hover{color:var(--light);background:rgba(247,246,250,.07)}

  /* ---------- Toast ---------- */
  #toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translateX(-50%) translateY(20px);
    background:rgba(20,14,60,.95);border:1.5px solid rgba(247,246,250,.25);color:var(--light);
    padding:11px 20px;border-radius:999px;font-size:13.5px;font-weight:800;opacity:0;pointer-events:none;
    transition:opacity .25s,transform .25s;z-index:60;max-width:92vw;text-align:center}
  #toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

  a.backLink{color:#B9B2EC;font-size:12px;font-weight:700;text-decoration:none}
  a.backLink:hover{color:var(--light)}

  /* ---------- Responsive ---------- */
  @media (max-width:720px){
    #gameGrid{grid-template-columns:1fr;gap:10px}
    .statCol{flex-direction:row;flex-wrap:wrap;gap:8px}
    .statCol .stat{flex:1;min-width:calc(33% - 8px)}
    #stage{min-height:240px;order:-1}
    #statColL{order:0}
    #statColR{order:1}
    .actBtn{min-width:30%}
  }
  /* Mobile portrait (§9.4): 2-row action bar, tighter chrome, room for the pet */
  @media (max-width:480px){
    #app{padding:10px 10px calc(16px + env(safe-area-inset-bottom))}
    header{margin-bottom:8px}
    .logoPaw{width:34px;height:34px;border-radius:11px;font-size:17px}
    .gameName{font-size:16px}
    .petTab{padding:6px 11px;font-size:12px}
    #stage{min-height:210px}
    .statCol .stat{min-width:calc(33% - 8px);padding:7px 9px 8px}
    .stat .row1{font-size:10px}
    .actBtn{min-width:calc(25% - 8px);max-width:none;padding:8px 4px;font-size:11.5px;border-radius:14px}
    .actBtn span.ico{font-size:18px}
    #statusBar{font-size:12px}
  }