/* Riddle Me X — mobile app (direction 1b: "the page is the app")
   Paper runs edge to edge; the chrome floats on top of it.
   Every colour and face is lifted from the original site — nothing new invented. */

  :root{
    --bg:#2A1810;
    --card:#F3E7D0;
    --card-key:#F7EEDC;
    --card-line: rgba(90,58,30,.16);
    --rule-red: rgba(139,58,43,.45);
    --ink:#2B1B12;
    --ink-soft:#6B5847;
    --on-dark:#E9D9B8;
    --on-dark-soft:#B49A78;
    --brass:#8C6A22;
    --brass-bright:#D8B15B;
    --brass-border:#C9A857;
    --green:#3F7D5D;
    --red:#8B3A2B;

    --line-h: 40px;        /* the ruled-paper rhythm */
    --rule-x: 34px;        /* red margin rule */
    --pad-l: 50px;         /* text starts right of the rule */
    --pad-r: 26px;
    --radius:9px;

    --font-display:'Lora', Georgia, serif;
    --font-mono:'IBM Plex Mono', 'Courier New', monospace;
    --font-ui:'Archivo', 'Helvetica Neue', Arial, sans-serif;
  }

  *{ box-sizing:border-box; }

  html,body{
    margin:0; padding:0;
    background:var(--bg);
    -webkit-text-size-adjust:100%;
  }

  body{
    min-height:100dvh;
    display:flex; justify-content:center;
    font-family:var(--font-ui);
    overscroll-behavior-y:none;
  }

  /* ── the paper ─────────────────────────────────────────── */
  .app{
    position:relative;
    width:100%; max-width:430px;
    height:100dvh;
    display:flex; flex-direction:column;
    background-color:var(--card);
    background-image:repeating-linear-gradient(
      to bottom,
      transparent 0px,
      transparent calc(var(--line-h) - 1px),
      var(--card-line) calc(var(--line-h) - 1px),
      var(--card-line) var(--line-h)
    );
    padding:calc(env(safe-area-inset-top, 0px) + 16px) 0 calc(env(safe-area-inset-bottom, 0px) + 12px);
    overflow:hidden;
  }

  .margin-rule{
    position:absolute; left:var(--rule-x); top:0; bottom:0;
    width:1px; background:var(--rule-red); pointer-events:none;
  }

  /* ── panels ────────────────────────────────────────────── */
  .panel{ display:none; flex:1; flex-direction:column; min-height:0; }
  .panel.is-active{ display:flex; }

  /* only the riddle itself scrolls — the tray and tab bar stay put */
  .play-scroll{
    flex:1; min-height:0; overflow-y:auto; -webkit-overflow-scrolling:touch;
    display:flex; flex-direction:column;
  }

  .panel-sheet{
    overflow-y:auto; -webkit-overflow-scrolling:touch;
    padding:8px var(--pad-r) 0 var(--pad-l);
  }

  .panel-title{
    font-family:var(--font-display); font-style:italic; font-weight:600;
    font-size:28px; line-height:var(--line-h); margin:8px 0 0; color:var(--ink);
  }
  .panel-sub{
    font:400 12.5px/1.5 var(--font-ui); color:var(--ink-soft); margin:.35rem 0 1rem;
  }

  /* ── play: head ────────────────────────────────────────── */
  .sheet-head{
    display:flex; align-items:center; justify-content:space-between;
    padding:12px var(--pad-r) 0 var(--pad-l); gap:10px;
  }
  .eyebrow{
    font-family:var(--font-mono); font-size:10px; letter-spacing:.14em;
    text-transform:uppercase; color:var(--brass);
    background:none; border:none; padding:0; cursor:pointer; text-align:left;
  }
  .eyebrow::after{ content:' ▾'; opacity:.7; }

  .streak-meter{ display:flex; align-items:center; gap:5px; flex:none; }
  .streak-meter i{ width:3px; height:14px; background:rgba(140,106,34,.25); display:block; }
  .streak-meter i.on{ background:var(--brass); }
  .streak-meter b{
    font-family:var(--font-mono); font-size:11px; color:var(--brass);
    margin-left:4px; font-weight:500;
  }

  .daily-note{
    display:none;
    margin:6px var(--pad-r) 0 var(--pad-l);
    font:400 12.5px/1.5 var(--font-ui); color:var(--ink-soft);
  }
  .app.is-daily .daily-note{ display:block; }

  /* ── play: the riddle ──────────────────────────────────── */
  .riddle-text{
    font-family:var(--font-display); font-style:italic;
    font-size:30px; line-height:var(--line-h);
    margin:22px var(--pad-r) 0 var(--pad-l);
    color:var(--ink); text-wrap:pretty;
  }

  .answer-row{
    margin:var(--line-h) var(--pad-r) 0 var(--pad-l);
    display:flex; align-items:baseline; gap:12px; min-height:var(--line-h);
  }
  .answer-label{
    display:flex; align-items:baseline; gap:8px; flex:none;
    font-family:var(--font-mono); font-size:28px; color:var(--ink);
  }
  .x-inline{
    font-family:var(--font-display); font-style:italic; font-weight:600;
    font-size:30px; color:var(--brass);
  }
  #answerInput{
    flex:1; min-width:0;
    font-family:var(--font-mono); font-size:28px; color:var(--ink);
    background:transparent; border:none; padding:0;
    border-bottom:3px solid transparent;
  }
  #answerInput::placeholder{ color:rgba(43,27,18,.28); }
  #answerInput:focus{ outline:none; }
  .app.is-solved #answerInput{
    color:var(--green); border-bottom-color:var(--green);
  }

  /* word and logic answers are words, not digits — give them room to read */
  .app.is-text .answer-label{ font-size:19px; }
  .app.is-text #answerInput{ font-family:var(--font-ui); font-size:19px; }

  .feedback{
    min-height:0; font-family:var(--font-ui); font-weight:600; font-size:.9rem;
    margin:0 var(--pad-r) 0 var(--pad-l); color:var(--ink);
  }
  .feedback:empty{ display:none; }
  .feedback.correct{ color:var(--green); }
  .feedback.incorrect{ color:var(--red); }

  .reveal-area{
    margin:14px var(--pad-r) 0 var(--pad-l);
    font-family:var(--font-mono); font-size:13px; line-height:var(--line-h);
    color:var(--ink-soft);
  }
  .reveal-area:empty{ display:none; }
  .reveal-area .eq-line{ color:var(--ink); font-weight:600; }
  .reveal-area ol{ margin:0; padding-left:1.1rem; }

  .architect{
    margin:10px var(--pad-r) 0 var(--pad-l);
    font-family:var(--font-display); font-style:italic; font-size:15px;
    line-height:1.5; color:var(--ink-soft);
    padding-left:.85rem; border-left:2px solid var(--brass-border);
    opacity:0; transform:translateY(.25rem);
  }
  .architect:empty{ display:none; }
  .architect.show{ animation:architectIn .5s ease-out forwards; }
  @keyframes architectIn{ to{ opacity:1; transform:translateY(0); } }

  /* the reward moment */
  .award{
    margin:18px var(--pad-r) 0 var(--pad-l);
    display:flex; align-items:center; gap:14px;
  }
  .award[hidden]{ display:none; }
  .award-points{
    font-family:var(--font-mono); font-size:34px; font-weight:700; color:var(--green);
  }
  .award-note{
    font:400 12.5px/1.5 var(--font-ui); color:var(--ink-soft); max-width:190px;
  }
  .award-note b{ font-family:var(--font-mono); color:var(--ink); font-weight:700; }

  /* ── the clear band + stamp ────────────────────────────── */
  .spacer{ flex:1; position:relative; min-height:76px; }
  .stamp{
    position:absolute; right:20px; top:50%;
    width:112px; height:112px;
    border:4px solid rgba(63,125,93,.85); border-radius:50%;
    display:flex; align-items:center; justify-content:center; text-align:center;
    font-family:var(--font-mono); font-weight:700; font-size:13px;
    letter-spacing:.05em; text-transform:uppercase; color:rgba(63,125,93,.9);
    transform:translateY(-50%) rotate(-12deg) scale(.6);
    opacity:0; pointer-events:none;
  }
  .stamp.show{ animation:stampIn .45s ease-out forwards; }
  @keyframes stampIn{
    0%{ opacity:0; transform:translateY(-50%) rotate(-20deg) scale(1.7); }
    60%{ opacity:1; transform:translateY(-50%) rotate(-12deg) scale(.94); }
    100%{ opacity:1; transform:translateY(-50%) rotate(-12deg) scale(1); }
  }

  /* ── the tray (pills + keypad + check) ─────────────────── */
  .tray{
    flex:none;
    background:rgba(43,27,18,.05);
    border-top:1px solid rgba(43,27,18,.14);
    padding:12px 14px 8px;
  }
  .app.is-solved .tray{ display:none; }

  .tray-pills{
    display:flex; gap:10px; justify-content:center; margin-bottom:12px; flex-wrap:wrap;
  }
  .tray-pill{
    font:600 12px var(--font-ui); padding:9px 14px; border-radius:999px;
    color:var(--ink); border:1px solid rgba(43,27,18,.28);
    background:rgba(243,231,208,.7); cursor:pointer;
  }
  .tray-pill:disabled{ opacity:.4; cursor:default; }
  .tray-pill.danger{ color:var(--red); border-color:rgba(139,58,43,.4); }

  .keypad{ display:grid; grid-template-columns:repeat(3,1fr); gap:9px; }
  .app.is-text .keypad{ display:none; }
  .key{
    height:56px; border-radius:var(--radius);
    border:1px solid rgba(43,27,18,.2); background:var(--card-key);
    box-shadow:0 1px 0 rgba(43,27,18,.12);
    display:flex; align-items:center; justify-content:center;
    font-family:var(--font-mono); font-size:23px; color:var(--ink);
    cursor:pointer; user-select:none; -webkit-tap-highlight-color:transparent;
  }
  .key:active{ background:#EFE2C8; transform:translateY(1px); box-shadow:none; }

  .check{
    width:100%; height:54px; margin-top:9px; border:none;
    border-radius:var(--radius); background:var(--ink); color:var(--card);
    font:700 15px var(--font-ui); cursor:pointer;
  }
  .check:active{ opacity:.9; }

  /* ── the solved tray ───────────────────────────────────── */
  .solved-tray{
    display:none; flex:none;
    margin:20px 14px 0; padding:14px; gap:10px;
    background:rgba(43,27,18,.05);
    border:1px solid rgba(43,27,18,.14); border-radius:12px;
  }
  .app.is-solved .solved-tray{ display:flex; }
  .solved-share, .solved-next{
    height:52px; border-radius:8px; cursor:pointer;
    display:flex; align-items:center; justify-content:center;
  }
  .solved-share{
    flex:1; border:1px solid rgba(43,27,18,.28); background:transparent;
    font:600 13px var(--font-ui); color:var(--ink);
  }
  .solved-next{
    flex:2.2; border:none; background:var(--ink); color:var(--card);
    font:700 15px var(--font-ui);
  }

  /* ── tab bar ───────────────────────────────────────────── */
  .tabbar{
    margin:10px 14px 0; display:flex;
    background:var(--ink); border-radius:999px; padding:8px 6px; flex:none;
  }
  .tab{
    flex:1; border:none; background:none; cursor:pointer;
    font:600 11px var(--font-ui); letter-spacing:.04em; color:var(--on-dark-soft);
    padding:6px 0; border-radius:999px;
  }
  .tab.active{
    font-weight:700; color:var(--ink); background:var(--brass-bright);
  }

  /* ── badges ────────────────────────────────────────────── */
  .badge-grid{
    display:grid; grid-template-columns:repeat(auto-fill,minmax(84px,1fr)); gap:12px;
  }
  .badge{
    display:flex; flex-direction:column; align-items:center; gap:6px;
    padding:12px 6px; border-radius:10px;
    border:1px solid rgba(43,27,18,.14); background:rgba(43,27,18,.04);
    opacity:.45;
  }
  .badge.unlocked{ opacity:1; border-color:var(--brass-border); background:rgba(216,177,91,.14); }
  .badge-glyph{ font-size:1.5rem; line-height:1; }
  .badge-name{
    font:600 .66rem var(--font-ui); text-align:center; color:var(--ink-soft); line-height:1.2;
  }
  .badge.unlocked .badge-name{ color:var(--ink); }

  /* ── leaderboard ───────────────────────────────────────── */
  .name-row{ display:flex; align-items:center; gap:.6rem; margin-bottom:.2rem; }
  .name-row label{ font:600 .8rem var(--font-ui); color:var(--ink); }
  .name-row input{
    font:inherit; padding:.45rem .6rem; border-radius:8px;
    border:1px solid rgba(43,27,18,.2); background:rgba(43,27,18,.06);
    color:var(--ink); flex:1; min-width:6rem;
  }

  .leaderboard-list{ list-style:none; margin:0 0 .8rem; padding:0; }
  .lb-row{
    display:flex; align-items:center; gap:.7rem; padding:.5rem 0;
    border-bottom:1px dashed rgba(43,27,18,.16);
  }
  .lb-rank{ font-family:var(--font-mono); font-weight:700; color:var(--brass); width:1.4rem; }
  .lb-name{
    flex:1; font:600 .92rem var(--font-ui); color:var(--ink);
    overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
  }
  .lb-score{ font-family:var(--font-mono); font-weight:700; color:var(--green); }
  .lb-empty{ color:var(--ink-soft); font-style:italic; padding:.4rem 0; }

  .stats-strip{
    display:flex; gap:1.2rem; margin:1.4rem 0 1rem;
    padding-top:1rem; border-top:1px solid rgba(43,27,18,.14);
  }
  .stat{ display:flex; flex-direction:column; }
  .stat strong{ font-family:var(--font-mono); font-size:1.2rem; color:var(--ink); }
  .stat small{
    font:600 .6rem var(--font-ui); letter-spacing:.1em;
    text-transform:uppercase; color:var(--ink-soft);
  }

  .panel-foot{ display:flex; gap:.6rem; margin:1.4rem 0 1rem; }

  /* ── how-to ────────────────────────────────────────────── */
  .how-to{
    margin:1.4rem 0 0; padding:.9rem 0;
    border-top:1px solid rgba(43,27,18,.14);
  }
  .how-to summary{ cursor:pointer; font:600 .92rem var(--font-ui); color:var(--ink); }
  .how-to-body{ margin-top:.75rem; color:var(--ink-soft); line-height:1.6; font-size:.9rem; }
  .how-to-body p{ margin:0 0 .7rem; }

  /* ── picker sheet ──────────────────────────────────────── */
  .picker-scrim{
    position:fixed; inset:0; background:rgba(20,12,7,.5); z-index:20;
    animation:fade .2s ease-out;
  }
  .picker[hidden], .picker-scrim[hidden]{ display:none; }
  @keyframes fade{ from{ opacity:0; } }

  .picker{
    position:absolute; left:0; right:0; bottom:0; z-index:21;
    background:var(--card);
    border-top:1px solid rgba(43,27,18,.2);
    border-radius:18px 18px 0 0;
    padding:20px 20px calc(env(safe-area-inset-bottom, 0px) + 16px);
    box-shadow:0 -12px 40px rgba(20,12,7,.4);
    max-height:88%; overflow-y:auto;
    animation:sheetUp .28s cubic-bezier(.2,.9,.3,1);
  }
  @keyframes sheetUp{ from{ transform:translateY(100%); } }

  .pick-list{ display:flex; flex-direction:column; gap:8px; }
  .pick-row{
    display:flex; flex-direction:column; gap:2px; text-align:left;
    padding:12px 14px; border-radius:10px; cursor:pointer;
    border:1px solid rgba(43,27,18,.18); background:rgba(43,27,18,.03);
  }
  .pick-row.active{ border-color:var(--brass-border); background:rgba(216,177,91,.16); }
  .pick-name{ font:600 15px var(--font-ui); color:var(--ink); }
  .pick-desc{ font:400 12px var(--font-ui); color:var(--ink-soft); }

  .pick-head{
    font:600 .8rem var(--font-ui); letter-spacing:.08em; text-transform:uppercase;
    color:var(--brass); margin:1.2rem 0 .6rem;
  }
  .pick-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:8px; margin-bottom:1.2rem; }
  .pick-chip{
    display:flex; flex-direction:column; gap:2px; align-items:flex-start;
    padding:10px 12px; border-radius:10px; cursor:pointer;
    border:1px solid rgba(43,27,18,.18); background:rgba(43,27,18,.03);
  }
  .pick-chip.active{ border-color:var(--brass-border); background:rgba(216,177,91,.16); }
  .pick-chip span{ font:600 14px var(--font-ui); color:var(--ink); }
  .pick-chip small{ font-family:var(--font-mono); font-size:11px; color:var(--ink-soft); }

  /* ── shorter screens: the tray gives ground before the riddle does ── */
  @media (max-height:880px){
    .key{ height:50px; font-size:21px; }
    .check{ height:50px; }
    .spacer{ min-height:40px; }
  }
  @media (max-height:740px){
    .key{ height:44px; font-size:19px; }
    .check{ height:46px; }
    .riddle-text{ font-size:26px; line-height:36px; }
    .tray{ padding:10px 14px 6px; }
    .tray-pills{ margin-bottom:9px; }
    .spacer{ min-height:20px; }
  }

  /* ── desktop: the app sits on the brown ground ─────────── */
  @media (min-width:520px){
    body{ align-items:center; padding:24px 0; }
    .app{
      min-height:auto; height:min(940px, calc(100dvh - 48px));
      border-radius:22px;
      box-shadow:0 30px 80px rgba(0,0,0,.45), 0 0 0 1px rgba(233,217,184,.08);
      padding-top:24px;
    }
  }

  @media (prefers-reduced-motion: reduce){
    .stamp.show{ animation:none; opacity:1; transform:translateY(-50%) rotate(-12deg); }
    .architect.show{ animation:none; opacity:1; transform:none; }
    .picker{ animation:none; }
  }