@import url('https://fonts.googleapis.com/css2?family=Pirata+One&family=Baloo+2:wght@500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

  :root{
    /* ---- site chrome tokens (page background outside the game panel) ---- */
    --site-bg:#ebf2ff;
    --site-ink:#1c2b4a;
    /* ---- color tokens (single committed world: a night ocean) ---- */
    --ink-950:#050B1F;
    --ink-900:#0A1433;
    --ink-800:#13245C;
    --ink-700:#1F3B85;
    --sea-600:#2E4F9E;
    --sea-400:#5578C9;
    --sand-100:#F6E9C7;
    --sand-200:#EEDAA6;
    --sand-300:#E0C27E;
    --gold-400:#F2C955;
    --gold-500:#DD9F2C;
    --coral-500:#E1613D;
    --kelp-500:#4FAE78;
    --parchment-ink:#2A1B08;
    --paper-ink:#FFF7E6;
    --line-soft: rgba(242,201,85,0.28);

    /* ---- spacing scale ---- */
    --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px;

    /* ---- radius scale ---- */
    --r-sm:10px; --r-md:16px; --r-lg:24px; --r-full:999px;

    /* ---- shadows (layered) ---- */
    --shadow-sm: 0 1px 2px rgba(2,6,14,0.4), 0 1px 1px rgba(2,6,14,0.28);
    --shadow-md: 0 10px 22px rgba(2,6,14,0.38), 0 3px 8px rgba(2,6,14,0.26);
    --shadow-lg: 0 32px 64px rgba(2,6,14,0.55), 0 10px 22px rgba(2,6,14,0.32);

    /* ---- type scale ---- */
    --fs-xs:0.75rem; --fs-sm:0.875rem; --fs-base:1rem; --fs-md:1.125rem;
    --fs-lg:1.375rem; --fs-xl:1.75rem; --fs-2xl:2.25rem; --fs-3xl:clamp(2.3rem,7vw,3.4rem);
  }

  *{ box-sizing:border-box; }
  html{ min-height:100%; }
  body{
    margin:0;
    background: var(--site-bg);
    color: var(--site-ink);
    font-family:'Baloo 2', ui-rounded, 'Segoe UI', sans-serif;
    min-height:100vh;
    overflow-x:hidden;
  }

  /* ================= Site chrome: main page background ================= */
  #site-main{ padding: var(--sp-5) var(--sp-4) var(--sp-8); }
  .game-frame{
    max-width:952px; margin:0 auto; border-radius:28px;
    box-shadow: 0 26px 60px rgba(20,40,90,0.24), 0 6px 16px rgba(20,40,90,0.14);
    background:
      radial-gradient(1100px 700px at 12% -8%, #123a5c 0%, transparent 58%),
      linear-gradient(180deg, var(--ink-950) 0%, var(--ink-900) 42%, var(--ink-800) 72%, var(--sea-600) 100%);
    color: var(--paper-ink);
    /* padding-bottom: var(--sp-2); */
    /* padding-bottom: 12rem; */
  }
.game-frame::after {
    content: "";
    background: url(/pages/games/code-quest/assets/chest-treasure.png);
    inset: auto 0 0 0;
    height: 240px;
    background-repeat: no-repeat;
    width: 100%;
    background-size: 100% auto;
    background-position: center;
    max-width: 100%;
    display: block;
  }

  h1,h2,h3{ font-family:'Pirata One','Segoe UI',serif; letter-spacing:0.3px; text-wrap:balance; margin:0; }
  button{ font-family:inherit; color:inherit; }
  button:focus-visible, input:focus-visible{ outline:3px solid var(--gold-400); outline-offset:2px; border-radius:6px; }
  [hidden]{ display:none !important; }
  code{ font-family:'JetBrains Mono', ui-monospace, monospace; }
  ::selection{ background:var(--gold-400); color:#2A1B08; }

  #app{ max-width:920px; margin:0 auto; padding:0 var(--sp-4) var(--sp-7); min-height:100%; }
  .view{ will-change: transform, opacity; }

  @media (prefers-reduced-motion: reduce){
    *{ animation-duration:0.001ms !important; transition-duration:0.001ms !important; }
  }

  /* ================= Top bar ================= */
  #topbar{
    position:sticky; top:env(safe-area-inset-top,0px); z-index:30;
    width:100%; display:flex; align-items:center; gap:var(--sp-3);
    padding: var(--sp-2) var(--sp-4);
    margin-bottom: var(--sp-4);
    /* background: linear-gradient(180deg, rgba(4,7,14,0.94), rgba(4,7,14,0.8)); */
    backdrop-filter: blur(8px);
    border-bottom:1px solid var(--line-soft);
    border-radius: 2rem;
    background: #2c4c99;
  }
  #topbar .back-btn{
    background:rgba(255,255,255,0.07); border:1px solid rgba(255,255,255,0.16); color:var(--paper-ink);
    border-radius:var(--r-full); padding:7px 14px; font-size:var(--fs-sm); font-weight:600; cursor:pointer;
    white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:42vw; flex-shrink:0;
    transition: transform 140ms cubic-bezier(.16,1,.3,1), background 140ms;
  }
  #topbar .back-btn:hover{ background:rgba(255,255,255,0.14); }
  #topbar .back-btn:active{ transform:scale(0.94); }
  #topbar .brand{ font-family:'Pirata One'; font-size:var(--fs-md); color:var(--gold-400); white-space:nowrap; flex-shrink:0; }
  #topbar .spacer{ flex:1; }
  #topbar .stat{
    display:flex; align-items:center; gap:6px; background:rgba(255,255,255,0.06); border:1px solid rgba(255,255,255,0.14);
    border-radius:var(--r-full); padding:5px 12px; font-weight:700; font-size:var(--fs-sm); white-space:nowrap;
    font-variant-numeric: tabular-nums;
  }
  #topbar .sync-dot{ width:7px; height:7px; min-width:7px; border-radius:50%; background:var(--kelp-500); display:inline-block; }
  #topbar .sync-dot.err{ background:var(--coral-500); }
  @media (max-width:560px){
    #topbar .brand{ display:none; }
    #topbar .stat{ padding:4px 9px; font-size:var(--fs-xs); }
  }

  /* ================= Buttons ================= */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    border-radius:var(--r-md); padding:12px 22px; font-weight:800; font-size:var(--fs-md);
    border:none; cursor:pointer; box-shadow:var(--shadow-sm); min-height:44px;
    transition: transform 150ms cubic-bezier(.16,1,.3,1), box-shadow 150ms, filter 150ms, background 150ms;
  }
  .btn:hover{ filter:brightness(1.07); box-shadow:var(--shadow-md); transform:translateY(-2px); }
  .btn:active{ transform:scale(0.95) translateY(0); box-shadow:var(--shadow-sm); filter:brightness(0.98); }
  .btn-gold{ background:linear-gradient(180deg, var(--gold-400), var(--gold-500)); color:#2B1B02; }
  .btn-sea{ background:linear-gradient(180deg, var(--sea-400), var(--sea-600)); color:var(--paper-ink); }
  .btn-ghost{ background:rgba(255,255,255,0.08); color:var(--paper-ink); border:1px solid rgba(255,255,255,0.22); box-shadow:none; }
  .btn-coral{ background:linear-gradient(180deg, #EA7A57, var(--coral-500)); color:#2B0F06; }
  .btn:disabled{ opacity:0.42; cursor:not-allowed; transform:none !important; box-shadow:none !important; filter:none !important; }
  .btn-row{ display:flex; gap:10px; flex-wrap:wrap; }

  /* ================= Start view ================= */
  .start-screen{ text-align:center; padding:8vh 8px var(--sp-6); display:flex; flex-direction:column; align-items:center; gap:var(--sp-4); }
  .compass{ width:92px; height:92px; }
  .start-title{ font-size:var(--fs-3xl); color:var(--gold-400); text-shadow:0 3px 0 rgba(0,0,0,0.35); }
  .start-sub{ max-width:480px; font-size:var(--fs-md); color:var(--sand-100); line-height:1.55; }
  .legend{
    display:flex; flex-wrap:wrap; gap:var(--sp-4); justify-content:center; max-width:560px; color:var(--sand-100);
    font-size:var(--fs-sm); background:rgba(255,255,255,0.05); border:1px dashed var(--line-soft);
    border-radius:var(--r-lg); padding:var(--sp-4) var(--sp-5);
  }
  .legend b{ color:var(--gold-400); }

  /* ================= Map view ================= */
  .map-header{ text-align:center; margin-bottom:6px; }
  .map-header h2{ font-size:var(--fs-2xl); color:var(--gold-400); }
  .map-header p{ color:var(--sand-100); margin:6px 0 0; }

  .island-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:var(--sp-5); margin-top:var(--sp-6); }
  .island-card{
    position:relative; cursor:pointer; border:none; text-align:left;
    background: radial-gradient(120% 140% at 30% 0%, var(--sand-200), var(--sand-300) 72%);
    border-radius: 36px 56px 40px 60px / 48px 36px 56px 40px;
    padding: var(--sp-6) var(--sp-5) var(--sp-5); color:var(--parchment-ink); box-shadow:var(--shadow-md);
    transition: box-shadow 160ms;
    will-change: transform;
  }
  .island-card:hover{ box-shadow:var(--shadow-lg); }
  .island-card:active{ filter:brightness(0.97); }
  .island-card .icon{ font-size:2.3rem; display:block; margin-bottom:6px; }
  .island-card h3{ font-size:var(--fs-lg); color:#2B1B02; }
  .island-card .desc{ font-size:var(--fs-xs); opacity:0.8; margin-top:4px; min-height:2.2em; }
  .island-card .crown{ position:absolute; top:10px; right:16px; font-size:1.4rem; }
  .progress-track{ margin-top:var(--sp-4); height:10px; border-radius:var(--r-full); background:rgba(42,27,8,0.18); overflow:hidden; }
  .progress-fill{ height:100%; background:linear-gradient(90deg, var(--kelp-500), #8AD8A6); border-radius:var(--r-full); width:0%; }
  .island-card .count{ margin-top:6px; font-size:var(--fs-xs); font-weight:700; opacity:0.75; font-variant-numeric: tabular-nums; }

  .map-footer{ text-align:center; margin-top:var(--sp-7); }
  .rank-line{ color:var(--sand-100); font-size:var(--fs-sm); margin-top:6px; }
  .legend-crown{ font-size:2rem; margin-bottom:4px; }

  /* ================= Island view ================= */
  .island-title{ display:flex; align-items:center; gap:var(--sp-3); margin-bottom:4px; }
  .island-title .icon{ font-size:2.1rem; }
  .island-title h2{ font-size:var(--fs-2xl); color:var(--gold-400); }
  .island-sub{ color:var(--sand-100); margin:2px 0 var(--sp-6); }

  .tier{ margin-bottom:var(--sp-6); }
  .tier-head{ display:flex; align-items:center; gap:10px; margin-bottom:var(--sp-3); padding-bottom:6px; border-bottom:1px dashed var(--line-soft); }
  .tier-head h3{ font-size:var(--fs-lg); color:var(--sand-100); }
  .tier-head .tier-note{ font-size:var(--fs-xs); color:rgba(244,228,188,0.65); }
  .tier.locked .tier-head h3{ color:rgba(244,228,188,0.42); }
  .tier-head .unlock-badge{ font-size:var(--fs-xs); background:var(--kelp-500); color:#04170D; padding:2px 10px; border-radius:var(--r-full); font-weight:800; }

  .tile-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(120px,1fr)); gap:var(--sp-3); }
  .tile{
    position:relative; border-radius:var(--r-md); padding:14px 10px 10px; text-align:center; cursor:pointer;
    border:1px solid rgba(255,255,255,0.14); background:linear-gradient(180deg, rgba(255,255,255,0.09), rgba(255,255,255,0.03));
    color:var(--paper-ink); transition: box-shadow 150ms, border-color 150ms; will-change:transform;
  }
  .tile:hover{ box-shadow:var(--shadow-sm); border-color:rgba(255,255,255,0.28); }
  .tile:active{ filter:brightness(0.94); }
  .tile .num{ font-size:var(--fs-xs); opacity:0.6; font-weight:700; }
  .tile .title{ font-size:var(--fs-sm); font-weight:700; margin:6px 0 8px; min-height:2.4em; line-height:1.2; }
  .tile .stars{ font-size:var(--fs-base); letter-spacing:2px; color:var(--gold-400); }
  .tile.locked{ cursor:not-allowed; opacity:0.5; }
  .tile.locked .lock{ font-size:1.4rem; }
  .tile.solved{ border-color:rgba(79,174,120,0.6); background:linear-gradient(180deg, rgba(79,174,120,0.22), rgba(79,174,120,0.06)); }

  /* ================= Challenge view ================= */
  .scroll-card{
    background:linear-gradient(180deg, var(--sand-100), var(--sand-200)); color:var(--parchment-ink);
    border-radius:var(--r-lg); padding:var(--sp-6); box-shadow:var(--shadow-lg); position:relative;
    background-image: repeating-linear-gradient(0deg, rgba(42,27,8,0.035) 0px, rgba(42,27,8,0.035) 1px, transparent 1px, transparent 26px),
                       linear-gradient(180deg, var(--sand-100), var(--sand-200));
  }
  .chal-eyebrow{ font-size:var(--fs-xs); text-transform:uppercase; letter-spacing:1.5px; font-weight:800; color:var(--sea-600); }
  .scroll-card h2{ font-size:var(--fs-xl); color:#2B1B02; margin:6px 0 var(--sp-3); }
  .story{ font-style:italic; line-height:1.55; margin-bottom:var(--sp-5); font-size:var(--fs-md); }

  .code-box{
    background:#0B1C2E; color:#E8F0F5; border-radius:var(--r-md); padding:var(--sp-5); overflow-x:auto;
    font-family:'JetBrains Mono', ui-monospace, monospace; font-size:0.98rem; line-height:1.75; white-space:pre;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06);
  }
  .tok-kw{ color:#F5A6C4; font-weight:600; }
  .tok-str{ color:#9BE39B; }
  .tok-num{ color:#8EC9F5; }
  .blank-input{
    font-family:'JetBrains Mono', ui-monospace, monospace; font-size:0.96rem; background:rgba(242,201,85,0.16);
    border:1.5px dashed var(--gold-400); border-radius:6px; color:#FFF3D0; padding:1px 6px; margin:0 1px;
    text-align:center; will-change:transform;
  }
  .blank-input.wrong{ border-color:var(--coral-500); background:rgba(225,97,61,0.22); }
  .blank-input.correct-fill{ border-color:var(--kelp-500); background:rgba(79,174,120,0.22); }

  .hint-box{ margin-top:var(--sp-4); background:rgba(21,91,103,0.12); border-left:4px solid var(--sea-600); border-radius:8px; padding:10px 14px; font-size:var(--fs-sm); overflow:hidden; }
  .feedback{ margin-top:var(--sp-4); border-radius:10px; padding:12px 16px; font-weight:700; }
  .feedback.ok{ background:rgba(79,174,120,0.18); color:#1E4D31; border:1px solid rgba(79,174,120,0.4); }
  .feedback.bad{ background:rgba(225,97,61,0.16); color:#6E2A16; border:1px solid rgba(225,97,61,0.35); }
  .explain{ margin-top:10px; font-weight:500; font-size:var(--fs-sm); line-height:1.5; }
  .stars-earned{ font-size:1.4rem; letter-spacing:4px; color:var(--gold-500); margin-top:6px; }
  .stars-earned .star{ display:inline-block; }
  .chal-actions{ margin-top:var(--sp-5); display:flex; gap:10px; flex-wrap:wrap; }

  /* ================= Modal ================= */
  #modal-layer{ position:fixed; inset:0; z-index:50; display:flex; align-items:center; justify-content:center; background:rgba(4,10,20,0); padding:var(--sp-4); }
  .modal-card{
    background:linear-gradient(180deg, var(--sand-100), var(--sand-200)); color:var(--parchment-ink); border-radius:var(--r-lg);
    padding:var(--sp-6); max-width:420px; width:100%; text-align:center; box-shadow:var(--shadow-lg);
  }
  .modal-card .big-icon{ font-size:3rem; display:block; margin-bottom:8px; }
  .modal-card h3{ font-size:var(--fs-xl); color:#2B1B02; margin-bottom:8px; }
  .modal-card p{ line-height:1.5; margin:0 0 var(--sp-5); }

  @media (max-width:480px){
    .start-title{ font-size:2.1rem; }
    .scroll-card{ padding:var(--sp-5); }
    .code-box{ font-size:0.86rem; padding:var(--sp-4); }
  }