/* =============================================================
   PuzzleDay — style.css
   1. Tokens  2. Reset  3. Utilities  4. Typography  5. Header/Nav
   6. Layout  7. Cards & grid  8. Modals & dialogs  9. Game boards
   10. Wordle keyboard  11. History  12. Ad slots  13. Footer
   14. Responsive  15. Reduced motion  16. Print
   ============================================================= */

/* 1. Tokens ---------------------------------------------------- */
:root{
  --bg:#f6f5f2;
  --bg-alt:#ffffff;
  --ink:#1c1b22;
  --ink-soft:#5a5866;
  --line:#e3e0da;
  --line-strong:#c9c5bc;
  --accent:#5b4bff;
  --accent-ink:#ffffff;
  --accent-soft:#eeecff;
  --green:#1c9a5b;
  --green-soft:#e4f7ec;
  --amber:#c98a12;
  --amber-soft:#fdf1dd;
  --red:#d13b3b;
  --red-soft:#fce7e7;
  --gray:#9c98a6;
  --gray-soft:#eeedf1;
  --radius-s:8px;
  --radius-m:14px;
  --radius-l:20px;
  --shadow-s:0 1px 2px rgba(20,15,50,.06), 0 1px 1px rgba(20,15,50,.04);
  --shadow-m:0 8px 24px rgba(20,15,50,.08), 0 2px 6px rgba(20,15,50,.05);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --display:'Fraunces',Georgia,serif;
  --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
  --header-h:64px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#131218;
    --bg-alt:#1b1a22;
    --ink:#f1eff6;
    --ink-soft:#a7a3b5;
    --line:#2c2a36;
    --line-strong:#3c3949;
    --accent:#8879ff;
    --accent-ink:#101014;
    --accent-soft:#232055;
    --green:#3ecb85;
    --green-soft:#123b28;
    --amber:#e0a53f;
    --amber-soft:#3a2c0f;
    --red:#f16565;
    --red-soft:#3d1a1a;
    --gray:#7d7a8c;
    --gray-soft:#26242e;
    --shadow-s:0 1px 2px rgba(0,0,0,.4);
    --shadow-m:0 8px 28px rgba(0,0,0,.45);
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --bg:#131218;
  --bg-alt:#1b1a22;
  --ink:#f1eff6;
  --ink-soft:#a7a3b5;
  --line:#2c2a36;
  --line-strong:#3c3949;
  --accent:#8879ff;
  --accent-ink:#101014;
  --accent-soft:#232055;
  --green:#3ecb85;
  --green-soft:#123b28;
  --amber:#e0a53f;
  --amber-soft:#3a2c0f;
  --red:#f16565;
  --red-soft:#3d1a1a;
  --gray:#7d7a8c;
  --gray-soft:#26242e;
  --shadow-s:0 1px 2px rgba(0,0,0,.4);
  --shadow-m:0 8px 28px rgba(0,0,0,.45);
  color-scheme: dark;
}

/* 2. Reset ------------------------------------------------------ */
*,*::before,*::after{box-sizing:border-box;margin:0}
html{-webkit-text-size-adjust:100%;tab-size:2;scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
a{color:inherit;text-decoration:none}
p{text-wrap:pretty}
h1,h2,h3,h4{text-wrap:balance;line-height:1.15;letter-spacing:-.01em;font-family:var(--display);font-weight:600}
ul{list-style:none;padding:0}
input,select{font:inherit;color:inherit}
::selection{background:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

/* 3. Utilities ---------------------------------------------------- */
.container{width:100%;max-width:1120px;margin-inline:auto;padding-inline:20px}
.skip-link{position:fixed;top:-100px;left:1rem;padding:.6rem 1rem;background:var(--accent);color:#fff;z-index:9999;border-radius:8px;font-weight:600}
.skip-link:focus{top:1rem}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.hidden{display:none !important}
.eyebrow{font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.muted{color:var(--ink-soft)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.7rem 1.3rem;border-radius:999px;font-weight:600;font-size:.95rem;transition:transform .15s var(--ease-out),background .15s,box-shadow .15s;white-space:nowrap}
.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow-s)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-m)}
.btn-ghost{background:var(--bg-alt);border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{padding:.45rem .9rem;font-size:.85rem}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.pill{display:inline-flex;align-items:center;gap:.4rem;padding:.3rem .7rem;border-radius:999px;background:var(--gray-soft);font-size:.78rem;font-weight:600;color:var(--ink-soft)}

/* 4. Typography ---------------------------------------------------- */
.section-title{font-size:clamp(1.4rem,1.1rem + 1.2vw,2rem);margin-bottom:.4rem}
.section-lead{color:var(--ink-soft);max-width:60ch;margin-bottom:1.5rem}
.h1{font-size:clamp(1.8rem,1.3rem + 2vw,2.7rem);margin-bottom:.5rem}
.prose h2{font-size:1.35rem;margin:2rem 0 .7rem}
.prose h3{font-size:1.1rem;margin:1.4rem 0 .5rem}
.prose p{margin-bottom:1rem;color:var(--ink-soft);max-width:75ch}
.prose ul{margin:0 0 1rem 0}
.prose li{color:var(--ink-soft);padding-left:1.3em;position:relative;margin-bottom:.4rem}
.prose li::before{content:"—";position:absolute;left:0;color:var(--accent)}

/* 5. Header/Nav ---------------------------------------------------- */
.site-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb, var(--bg) 88%, transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header .inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--display);font-weight:700;font-size:1.25rem}
.brand .logo-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),#9b8cff);display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--sans);font-weight:800;font-size:1rem}
.nav-actions{display:flex;align-items:center;gap:.6rem}
.lang-switch{display:flex;align-items:center;gap:.3rem;font-size:.85rem;font-weight:600;color:var(--ink-soft)}
.lang-switch a{padding:.25rem .5rem;border-radius:6px}
.lang-switch a.is-active{background:var(--accent-soft);color:var(--accent)}
.countdown-chip{display:flex;align-items:center;gap:.45rem;padding:.4rem .75rem;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:.82rem;font-variant-numeric:tabular-nums}
.countdown-chip svg{width:15px;height:15px}

/* 6. Layout ---------------------------------------------------- */
main{display:block}
.hero{padding:2.6rem 0 1.6rem}
.view{padding-bottom:3rem}
.view-header{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-bottom:1.2rem}
body[data-view="game"] .hero{display:none}

/* 7. Cards & grid ---------------------------------------------------- */
.game-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.game-card{position:relative;width:100%;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-m);padding:1.1rem;display:flex;flex-direction:column;gap:.6rem;text-align:left;font:inherit;transition:transform .18s var(--ease-out),box-shadow .18s,border-color .18s}
.game-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.game-card .icon{width:42px;height:42px;border-radius:11px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center}
.game-card .icon svg{width:22px;height:22px}
.game-card h3{font-size:1.05rem}
.game-card p{font-size:.85rem;color:var(--ink-soft);flex:1}
.game-card .levels-row{display:flex;gap:.3rem;margin-top:.2rem}
.level-dot{width:22px;height:22px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:.68rem;font-weight:800;background:var(--gray-soft);color:var(--gray)}
.level-dot.is-played{background:var(--green-soft);color:var(--green)}
.game-card .card-cta{font-size:.82rem;font-weight:700;color:var(--accent);display:flex;align-items:center;gap:.3rem}
.game-card.is-replay .icon{background:var(--amber-soft);color:var(--amber)}
.section-block{margin-top:2.4rem}
.section-block-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:.9rem;flex-wrap:wrap}

/* 8. Modals & dialogs ---------------------------------------------------- */
dialog{border:0;border-radius:var(--radius-l);padding:0;max-width:min(480px,92vw);width:100%;max-height:88vh;overflow:auto;background:var(--bg-alt);color:var(--ink);box-shadow:var(--shadow-m);position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);margin:0}
dialog::backdrop{background:rgba(15,12,30,.55);backdrop-filter:blur(2px)}
.modal-body{padding:1.6rem}
.modal-ad-top{min-height:64px;margin-bottom:1.1rem;font-size:.7rem}
.modal-close{position:absolute;top:.9rem;right:.9rem;width:34px;height:34px;border-radius:50%;background:var(--gray-soft);display:flex;align-items:center;justify-content:center}
.modal-close:hover{background:var(--red-soft);color:var(--red)}
.modal-title{font-size:1.25rem;margin-bottom:.3rem;padding-right:2rem}
.modal-sub{color:var(--ink-soft);font-size:.9rem;margin-bottom:1.2rem}
.level-list{display:flex;flex-direction:column;gap:.55rem}
.level-btn{display:flex;align-items:center;justify-content:space-between;gap:.8rem;padding:.85rem 1rem;border-radius:var(--radius-s);border:1px solid var(--line);background:var(--bg);transition:border-color .15s,background .15s}
.level-btn:hover{border-color:var(--accent);background:var(--accent-soft)}
.level-btn .lv-name{font-weight:700}
.level-btn .lv-stars{display:flex;gap:2px}
.level-btn .lv-stars span{width:7px;height:7px;border-radius:50%;background:var(--line-strong)}
.level-btn .lv-stars span.on{background:var(--accent)}
.level-btn .lv-status{font-size:.75rem;font-weight:700;color:var(--gray)}
.level-btn.is-played .lv-status{color:var(--green)}
.level-1 .lv-stars span:nth-child(1).on{background:var(--green)}

/* 9. Game boards (generic) ---------------------------------------------------- */
.game-layout{display:flex;gap:1rem;align-items:flex-start}
.game-layout .game-shell{flex:1;min-width:0}
.ad-skyscraper{width:160px;min-height:520px;flex-shrink:0;position:sticky;top:calc(var(--header-h) + 16px);writing-mode:horizontal-tb}
@media (max-width:959px){ .ad-slot.ad-skyscraper{display:none} }
.game-shell{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-l);padding:1.3rem;box-shadow:var(--shadow-s)}
.game-toolbar{display:flex;align-items:center;justify-content:space-between;gap:.8rem;flex-wrap:wrap;margin-bottom:1rem}
.game-toolbar-left{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}
.game-toolbar-right{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}
.game-meta-pill{font-size:.78rem;font-weight:700;padding:.3rem .65rem;border-radius:999px;background:var(--accent-soft);color:var(--accent)}
.board-wrap{display:flex;justify-content:center;padding:.4rem 0}
.status-banner{display:flex;align-items:center;gap:.6rem;padding:.7rem 1rem;border-radius:var(--radius-s);background:var(--green-soft);color:var(--green);font-weight:700;margin-bottom:1rem}
.status-banner.is-info{background:var(--accent-soft);color:var(--accent)}

/* Sudoku / Killer */
.sudoku-grid{display:grid;grid-template-columns:repeat(9,var(--cell,38px));grid-template-rows:repeat(9,var(--cell,38px));border:2.5px solid var(--ink);border-radius:6px;overflow:hidden;background:var(--bg-alt)}
.sudoku-cell{display:flex;align-items:center;justify-content:center;font-size:1.05rem;font-weight:600;border:1px solid var(--line);position:relative;cursor:pointer;user-select:none;background:var(--bg-alt);color:var(--ink)}
.sudoku-cell.given{color:var(--ink);background:var(--gray-soft);cursor:default}
.sudoku-cell.selected{background:var(--accent-soft)}
.sudoku-cell.peer{background:color-mix(in srgb, var(--accent-soft) 55%, var(--bg-alt))}
.sudoku-cell.same-value{color:var(--accent)}
.sudoku-cell.conflict{background:var(--red-soft);color:var(--red)}
.sudoku-cell.border-r{border-right:2.5px solid var(--ink)}
.sudoku-cell.border-b{border-bottom:2.5px solid var(--ink)}
.sudoku-cell .cage-sum{position:absolute;top:1px;left:3px;font-size:.55rem;font-weight:800;color:var(--accent)}
.sudoku-cell .pencil{position:absolute;inset:2px;display:grid;grid-template-columns:repeat(3,1fr);font-size:.5rem;font-weight:600;color:var(--ink-soft)}
.sudoku-cell.has-cage::after{content:"";position:absolute;top:3px;right:3px;bottom:3px;left:3px;pointer-events:none;border:0 dashed var(--accent)}
.cage-t::after{border-top-width:2px}
.cage-r::after{border-right-width:2px}
.cage-b::after{border-bottom-width:2px}
.cage-l::after{border-left-width:2px}
.num-pad{display:grid;grid-template-columns:repeat(5,1fr);gap:.4rem;max-width:340px;margin:1rem auto 0}
.num-pad button{aspect-ratio:1;border-radius:8px;background:var(--bg);border:1px solid var(--line);font-weight:700;font-size:1.05rem}
.num-pad button:hover{border-color:var(--accent);color:var(--accent)}
.num-pad button.erase{grid-column:span 2;font-size:.8rem}
.num-pad button.pencil-toggle{grid-column:span 3;font-size:.78rem}
.num-pad button.pencil-toggle.is-active{background:var(--accent);color:#fff}

/* Word search */
.wordsearch-layout{display:flex;gap:1.4rem;flex-wrap:wrap;align-items:flex-start;justify-content:center}
.ws-grid{display:grid;border:2px solid var(--line-strong);border-radius:8px;overflow:hidden;background:var(--bg-alt);touch-action:none}
.ws-cell{display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;border:1px solid var(--line);user-select:none;cursor:pointer;position:relative}
.ws-cell.selecting{background:var(--accent-soft)}
.ws-cell.found{background:var(--green-soft);color:var(--green)}
.ws-wordlist{min-width:170px;display:flex;flex-direction:column;gap:.35rem}
.ws-wordlist li{padding:.4rem .6rem;border-radius:6px;background:var(--gray-soft);font-weight:700;font-size:.85rem;color:var(--ink-soft)}
.ws-wordlist li.found{background:var(--green-soft);color:var(--green);text-decoration:line-through}

/* Wordle / palabra secreta */
.ws-board{display:flex;flex-direction:column;gap:6px;align-items:center;margin-bottom:1.2rem}
.ws-row{display:grid;gap:6px}
.ws-tile{width:44px;height:44px;border:2px solid var(--line-strong);border-radius:6px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.2rem;text-transform:uppercase;background:var(--bg-alt)}
.ws-tile.correct{background:var(--green);border-color:var(--green);color:#fff}
.ws-tile.present{background:var(--amber);border-color:var(--amber);color:#fff}
.ws-tile.absent{background:var(--gray);border-color:var(--gray);color:#fff}
.ws-tile.filled{border-color:var(--ink-soft)}

/* Tango / Queens generic grid */
.tg-grid,.qn-grid{display:grid;border:2.5px solid var(--ink);border-radius:6px;overflow:hidden}
.tg-cell,.qn-cell{display:flex;align-items:center;justify-content:center;font-size:1.4rem;border:1px solid var(--line);cursor:pointer;position:relative;user-select:none;background:var(--bg-alt)}
.tg-cell.locked{background:var(--gray-soft);cursor:default}
.tg-cell .constraint{position:absolute;font-weight:800;font-size:.7rem;color:var(--ink-soft);background:var(--bg-alt);border-radius:50%;width:15px;height:15px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line-strong)}
.tg-cell .c-right{right:-8px;top:50%;transform:translateY(-50%);z-index:2}
.tg-cell .c-bottom{bottom:-8px;left:50%;transform:translateX(-50%);z-index:2}
.qn-cell.marked-x::after{content:"×";font-size:1.1rem;color:var(--ink-soft);font-weight:800}
.qn-cell.marked-q::after{content:"♛";color:var(--accent)}
.qn-cell.conflict{outline:2px solid var(--red)}

/* Hepatograma */
.hep-letters{display:flex;gap:.5rem;justify-content:center;flex-wrap:wrap;margin-bottom:1rem}
.hep-letter{width:52px;height:52px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.4rem}
.hep-letter.pangram-letter{background:var(--accent);color:#fff}
.hep-input-row{display:flex;justify-content:center;gap:.5rem;margin-bottom:1rem}
.hep-input{flex:1;max-width:280px;padding:.75rem 1rem;border-radius:999px;border:2px solid var(--line-strong);text-transform:uppercase;font-weight:700;letter-spacing:.05em;text-align:center;font-size:1.05rem}
.hep-found-list{display:flex;flex-wrap:wrap;gap:.4rem;max-width:420px;margin:0 auto}
.hep-found-list li{padding:.3rem .7rem;border-radius:999px;background:var(--green-soft);color:var(--green);font-weight:700;font-size:.82rem}
.hep-found-list li.is-pangram{background:var(--accent);color:#fff}

/* Minesweeper */
.ms-grid{display:grid;border:2px solid var(--line-strong);border-radius:8px;overflow:hidden}
.ms-cell{display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85rem;border:1px solid var(--line);cursor:pointer;background:var(--gray-soft);user-select:none}
.ms-cell.revealed{background:var(--bg-alt);cursor:default}
.ms-cell.flagged{background:var(--amber-soft)}
.ms-cell.mine{background:var(--red-soft)}
.ms-cell[data-n="1"]{color:#3b7dd8}.ms-cell[data-n="2"]{color:var(--green)}.ms-cell[data-n="3"]{color:var(--red)}
.ms-cell[data-n="4"]{color:#7040c9}.ms-cell[data-n="5"]{color:var(--amber)}

/* Memory / parejas */
.mm-grid{display:grid;gap:8px;justify-content:center}
.mm-card{aspect-ratio:3/4;border-radius:10px;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:1.6rem;cursor:pointer;transition:transform .3s var(--ease-out);color:#fff}
.mm-card.flipped,.mm-card.matched{background:var(--bg-alt);border:2px solid var(--line-strong);color:var(--ink)}
.mm-card.matched{border-color:var(--green);color:var(--green)}

/* Solitaire */
.sol-board{display:flex;flex-direction:column;gap:1rem;overflow-x:auto;padding-bottom:.5rem}
.sol-row{display:flex;gap:8px}
.sol-pile{width:56px;height:78px;border-radius:8px;border:2px dashed var(--line-strong);flex-shrink:0;position:relative}
.card-el{width:56px;height:78px;border-radius:8px;background:var(--bg-alt);border:1px solid var(--line-strong);box-shadow:var(--shadow-s);display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:800;font-size:.95rem;position:absolute;top:0;left:0;cursor:pointer}
.card-el.red{color:var(--red)}
.card-el.black{color:var(--ink)}
.card-el.back{background:linear-gradient(135deg,var(--accent),#9b8cff)}
.card-el.selected{outline:3px solid var(--accent);z-index:5}
.sol-tableau{display:flex;gap:8px}
.sol-col{position:relative;width:56px;flex-shrink:0}

/* 10. Wordle keyboard ---------------------------------------------------- */
.kb{display:flex;flex-direction:column;gap:6px;max-width:520px;margin:0 auto}
.kb-row{display:flex;gap:5px;justify-content:center}
.kb-key{flex:1;max-width:40px;height:48px;border-radius:6px;background:var(--gray-soft);font-weight:700;font-size:.82rem;display:flex;align-items:center;justify-content:center;text-transform:uppercase}
.kb-key.wide{max-width:64px;font-size:.68rem}
.kb-key.correct{background:var(--green);color:#fff}
.kb-key.present{background:var(--amber);color:#fff}
.kb-key.absent{background:var(--ink-soft);color:#fff;opacity:.6}

/* 11. History ---------------------------------------------------- */
.history-toolbar{display:flex;align-items:center;gap:.8rem;flex-wrap:wrap;margin-bottom:1.4rem}
.history-toolbar input[type="date"]{padding:.6rem .9rem;border-radius:var(--radius-s);border:1px solid var(--line-strong);background:var(--bg-alt)}
.history-list{display:flex;flex-direction:column;gap:10px}
.history-day{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-m);padding:1rem 1.2rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.history-day .date-label{font-weight:700;min-width:130px}
.history-day .date-label small{display:block;font-weight:500;color:var(--ink-soft);font-size:.75rem}
.history-icons{display:flex;gap:.4rem;flex-wrap:wrap}
.history-icon{width:32px;height:32px;border-radius:8px;background:var(--gray-soft);color:var(--gray);display:flex;align-items:center;justify-content:center}
.history-icon svg{width:16px;height:16px}
.history-icon.is-played{background:var(--green-soft);color:var(--green)}

/* 12. Ad slots ---------------------------------------------------- */
.ad-slot{display:flex;align-items:center;justify-content:center;text-align:center;border:2px dashed var(--line-strong);border-radius:var(--radius-m);background:var(--bg-alt);color:var(--ink-soft);font-weight:700;letter-spacing:.05em;font-size:.78rem;text-transform:uppercase;position:relative;overflow:hidden}
.ad-slot::before{content:"Publicidad";position:absolute;top:6px;left:10px;font-size:.62rem;opacity:.55;letter-spacing:.08em}
.ad-slot span{opacity:.75}
.ad-banner{min-height:100px;width:100%;margin:1.6rem 0}
.ad-incontent{min-height:250px;width:100%;max-width:640px;margin:2rem auto}
.ad-popup-slot{min-height:180px;width:100%}
.ad-corner{position:fixed;bottom:16px;right:16px;z-index:60;width:260px;min-height:90px;background:var(--bg-alt);box-shadow:var(--shadow-m);animation:slideUp .4s var(--ease-out)}
.ad-corner-close{position:absolute;top:6px;right:6px;width:22px;height:22px;border-radius:50%;background:var(--gray-soft);display:flex;align-items:center;justify-content:center;font-size:.7rem}
@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
.ad-download-dialog .modal-body{text-align:center}

/* 13. Footer ---------------------------------------------------- */
.site-footer{border-top:1px solid var(--line);padding:2.4rem 0;margin-top:3rem;color:var(--ink-soft);font-size:.85rem}
.footer-grid{display:flex;justify-content:space-between;gap:1.5rem;flex-wrap:wrap}
.footer-links{display:flex;gap:1.2rem;flex-wrap:wrap}
.footer-links a:hover{color:var(--accent)}

/* FAQ */
.faq details{border-bottom:1px solid var(--line);padding:.9rem 0}
.faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.3rem;color:var(--accent);flex-shrink:0}
.faq details[open] summary::after{content:"–"}
.faq p{color:var(--ink-soft);margin-top:.6rem;max-width:70ch}

/* Related tools */
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.related-grid a{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-s);padding:.7rem .9rem;font-weight:700;font-size:.85rem;text-align:center}
.related-grid a:hover{border-color:var(--accent);color:var(--accent)}

/* Completion modal */
.confetti-emoji{font-size:2.6rem;text-align:center;margin-bottom:.5rem}
.completion-stats{display:flex;gap:.8rem;justify-content:center;margin:1rem 0}
.completion-stats .stat{background:var(--gray-soft);border-radius:var(--radius-s);padding:.6rem 1rem;text-align:center}
.completion-stats .stat b{display:block;font-size:1.2rem}
.completion-countdown{text-align:center;font-weight:800;font-size:1.3rem;color:var(--accent);font-variant-numeric:tabular-nums;margin:.6rem 0}

/* 14. Responsive ---------------------------------------------------- */
@media (max-width:539px){
  :root{--cell:32px}
  .h1{font-size:1.7rem}
  .site-header .inner{flex-wrap:wrap;height:auto;padding-block:.6rem;gap:.5rem}
  .ws-tile{width:38px;height:38px;font-size:1rem}
  .ad-corner{width:calc(100% - 32px);right:16px;left:16px}
}
@media (min-width:540px){ .container{padding-inline:28px} }
@media (min-width:720px){ :root{--cell:42px} }
@media (min-width:960px){ .hero{padding:3.6rem 0 2.2rem} }
@media (min-width:1280px){ .container{padding-inline:32px} }

/* 15. Reduced motion ---------------------------------------------------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .ad-corner{animation:none}
  .game-card,.btn-primary{transition:none}
}

/* 16. Print (for “imprimir / descargar PDF”) ---------------------------------------------------- */
@media print{
  .site-header,.site-footer,.ad-slot,.game-toolbar,.num-pad,.kb,.modal-close,.no-print{display:none !important}
  body{background:#fff}
  .game-shell{border:none;box-shadow:none}
}