/* WordSleuth theme — literary word-nerd + Scrabble/Wordle tile motif */
:root{
  --bg:#f3f4f1;
  --fg:#191a17;
  --muted:#6a6d63;
  --card:#ffffff;
  --border:#e0e1da;
  --accent:#2f9e58;      /* correct-green */
  --accent-2:#e0a11c;    /* present-amber (semantic) */
  --accent-ink:#ffffff;
  --ring:#2f9e58;
  --font-display:'Fraunces',Georgia,'Times New Roman',serif;
  --font-body:system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --font-mono:'Space Mono',ui-monospace,Menlo,Consolas,monospace;
  --radius:14px;--radius-sm:9px;--maxw:1080px;
  --shadow:0 1px 2px rgba(25,26,23,.05),0 14px 32px -20px rgba(25,40,26,.32);
}
body{
  background:
    radial-gradient(880px 460px at 86% -12%, rgba(47,158,88,.09), transparent 62%),
    radial-gradient(700px 400px at -4% 6%, rgba(224,161,28,.07), transparent 55%),
    var(--bg);
  background-attachment:fixed;
}
.brand-accent{color:var(--accent)}
.brand{font-weight:900;letter-spacing:-.02em}
h1,h2,h3{font-weight:900;letter-spacing:-.015em}
.hero h1{font-optical-sizing:auto}
.eyebrow{color:var(--accent);font-weight:700}
.btn-primary{box-shadow:0 8px 20px -10px var(--accent)}
.rule{height:1px;border:0;margin:1.4rem 0;background:linear-gradient(90deg,transparent,var(--border),transparent)}
.card .card-ico{font-size:1.6rem}

/* ---- solver widget ---- */
.solver{padding:clamp(1rem,3vw,1.6rem)}
.sv-row{display:flex;flex-wrap:wrap;gap:.8rem;align-items:flex-end;margin-bottom:1rem}
.sv-field{display:flex;flex-direction:column;gap:.35rem}
.sv-field label{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.sv-field input[type=text]{font-family:var(--font-mono);text-transform:lowercase;letter-spacing:.05em;font-size:1.05rem}
.hint{font-size:.82rem;color:var(--muted)}
.loading{font-family:var(--font-mono);font-size:.85rem;color:var(--muted);padding:.5rem 0}

/* wordle tiles */
.tiles{display:flex;gap:.5rem;flex-wrap:wrap}
.tile{width:52px;height:52px;border:2px solid var(--border);border-radius:8px;display:grid;place-items:center;
  font-family:var(--font-mono);font-weight:700;font-size:1.4rem;text-transform:uppercase;background:var(--card);
  cursor:pointer;user-select:none;transition:transform .08s,background .12s,border-color .12s,color .12s}
.tile:active{transform:scale(.94)}
.tile.g{background:var(--accent);border-color:var(--accent);color:#fff}
.tile.y{background:var(--accent-2);border-color:var(--accent-2);color:#fff}
.tile.b{background:#787c74;border-color:#787c74;color:#fff}
.tile input{position:absolute;opacity:0;width:1px;height:1px}
.tile-help{font-size:.82rem;color:var(--muted);margin-top:.4rem}

/* results */
.result-meta{font-family:var(--font-mono);font-size:.82rem;color:var(--muted);margin:.8rem 0 .5rem}
.wordgrid{display:flex;flex-wrap:wrap;gap:.4rem}
.wordgrid .w{font-family:var(--font-mono);background:var(--card);border:1px solid var(--border);border-radius:7px;
  padding:.32em .6em;font-size:.98rem;cursor:pointer;transition:border-color .12s,background .12s;position:relative}
.wordgrid .w:hover{border-color:var(--accent);color:var(--accent)}
.wordgrid .w.copied{background:var(--accent);color:#fff;border-color:var(--accent)}
.wordgrid .w .pts{font-size:.7em;color:var(--accent-2);margin-left:.4ch;font-weight:700}
.wordgrid .w:hover .pts{color:#fff}
.len-group{margin:.9rem 0}
.len-group h4{font-family:var(--font-mono);font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin:0 0 .5rem;font-weight:700}
.seg-mini{display:inline-flex;border:1px solid var(--border);border-radius:999px;overflow:hidden;background:var(--card)}
.seg-mini button{padding:.4em .8em;background:none;border:0;font-size:.82rem;font-family:var(--font-mono);color:var(--muted);cursor:pointer}
.seg-mini button[aria-pressed=true]{background:var(--accent);color:#fff}

/* wordle tile inputs: centre the letter, colour when filled */
input.tile{text-align:center;cursor:text;caret-color:var(--accent);padding:0;color:var(--fg)}
input.tile:focus{border-color:var(--accent);outline:none}
input.tile.g{background:var(--accent);border-color:var(--accent);color:#fff;caret-color:#fff}

/* best-next-guess suggestion */
.suggest{display:flex;align-items:center;gap:.6rem .9rem;flex-wrap:wrap;
  background:color-mix(in srgb,var(--accent) 10%,var(--card));
  border:1px solid color-mix(in srgb,var(--accent) 34%,var(--border));
  border-radius:var(--radius-sm);padding:.7rem 1rem;margin:.2rem 0 1rem}
.suggest .sg-label{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.suggest .sg-word{font-family:var(--font-mono);font-weight:700;font-size:1.15rem;letter-spacing:.14em;
  background:var(--accent);color:#fff;border:0;border-radius:8px;padding:.28em .7em;cursor:pointer}
.suggest .sg-word:hover{filter:brightness(1.07);color:#fff}
.suggest .sg-word.copied{filter:brightness(1.15)}
.suggest .sg-why{font-size:.82rem;color:var(--muted)}

/* clear-all button */
.btn-clear{font-family:var(--font-mono);font-size:.8rem;background:var(--card);border:1px solid var(--border);
  border-radius:999px;padding:.5em 1em;color:var(--fg);cursor:pointer;transition:border-color .12s,color .12s}
.btn-clear:hover{border-color:var(--accent);color:var(--accent)}

/* ===== interactive Wordle board ===== */
.wl-board{display:flex;flex-direction:column;gap:.5rem;margin-bottom:.9rem}
.wl-brow{display:flex;gap:.5rem;align-items:center}
.wl-t{width:52px;height:52px;flex:none;border:2px solid var(--border);border-radius:8px;background:var(--card);color:var(--fg);
  font-family:var(--font-mono);font-weight:700;font-size:1.5rem;text-transform:uppercase;cursor:pointer;padding:0;
  display:grid;place-items:center;transition:transform .07s,background .12s,border-color .12s,color .12s}
.wl-t:active{transform:scale(.93)}
.wl-t.cur{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 26%,transparent)}
.wl-t.b{background:#787c74;border-color:#787c74;color:#fff}
.wl-t.y{background:var(--accent-2);border-color:var(--accent-2);color:#fff}
.wl-t.g{background:var(--accent);border-color:var(--accent);color:#fff}
.wl-del{background:none;border:0;color:var(--muted);font-size:1.3rem;line-height:1;cursor:pointer;padding:.1em .3em}
.wl-del:hover{color:var(--accent-2)}
.wl-del-sp{width:0}
.wl-bar{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap;margin-bottom:.8rem}
.wl-tip{font-size:.78rem;color:var(--muted);flex:1 1 240px}
.wl-tip .ty{color:var(--accent-2)}.wl-tip .tg{color:var(--accent)}
.wl-kb{display:flex;flex-direction:column;gap:.4rem;margin:.2rem 0 .4rem;max-width:560px}
.kb-row{display:flex;gap:.35rem}
.kb-k{flex:1 1 0;min-width:0;height:46px;border:0;border-radius:6px;background:var(--border);color:var(--fg);
  font-family:var(--font-body);font-weight:700;font-size:.95rem;text-transform:uppercase;cursor:pointer;transition:filter .1s,background .12s,color .12s}
.kb-k:hover{filter:brightness(.96)}.kb-k:active{filter:brightness(.9)}
.kb-k.b{background:#787c74;color:#fff}.kb-k.y{background:var(--accent-2);color:#fff}.kb-k.g{background:var(--accent);color:#fff}
.kb-wide{flex:1.6 1 0;font-size:.72rem;letter-spacing:.02em}

.countbar{font-family:var(--font-mono);font-size:.9rem;color:var(--muted);margin:.6rem 0 .2rem}
.countbar b{font-family:var(--font-display);font-size:1.5rem;color:var(--fg);margin-right:.15ch}
.sg-alts{display:flex;flex-wrap:wrap;gap:.35rem;align-items:center}
.sg-alts .w{font-family:var(--font-mono);background:var(--card);border:1px solid var(--border);border-radius:6px;padding:.22em .5em;font-size:.84rem;cursor:pointer;transition:border-color .12s,color .12s}
.sg-alts .w:hover{border-color:var(--accent);color:var(--accent)}
.sg-mode{margin-left:auto}
.linkbtn{background:none;border:0;color:var(--accent);font-family:var(--font-mono);font-size:inherit;cursor:pointer;padding:0;text-decoration:underline}
.linkbtn:hover{filter:brightness(1.1)}
.wl-common{display:inline-flex;align-items:center;gap:.45ch;font-family:var(--font-mono);font-size:.78rem;color:var(--muted);cursor:pointer;user-select:none}
.wl-common input{accent-color:var(--accent);width:15px;height:15px;cursor:pointer;margin:0}
.ph-strip{position:sticky;top:64px;z-index:30;pointer-events:none}
.ph-strip .wrap{display:flex;justify-content:flex-end;padding-top:.8rem;padding-bottom:0}
.ph-hdr{display:inline-flex;pointer-events:auto;filter:drop-shadow(0 2px 6px rgba(0,0,0,.12))}
.ph-hdr img{height:44px;width:auto;display:block}
@media(max-width:600px){.ph-hdr img{height:38px}}
.wl-length-ext{display:flex;align-items:center;gap:.7rem;flex-wrap:wrap;margin:1rem 0 0}
.wl-length-ext .wl-len{font-size:.9rem;gap:.6ch}
.wl-setup-hint{font-family:var(--font-mono);font-size:.72rem;color:var(--muted)}
.wl-len{display:inline-flex;align-items:center;gap:.5ch;font-family:var(--font-mono);font-size:.78rem;color:var(--muted);white-space:nowrap}
.wl-len select{font:inherit;font-size:.82rem;padding:.35em .5em;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--card);color:var(--fg);cursor:pointer}
.wl-board{overflow-x:auto;padding-bottom:2px}
.wl-brow{width:max-content}

/* visualizations */
.viz{margin:1.1rem 0}
.viz-h{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:.5rem}
.freqbars{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:.32rem .9rem}
.fb{display:flex;align-items:center;gap:.5ch;font-family:var(--font-mono);font-size:.8rem}
.fb-l{width:1.2em;font-weight:700;color:var(--fg)}
.fb-bar{flex:1;height:9px;background:var(--border);border-radius:5px;overflow:hidden}
.fb-bar span{display:block;height:100%;background:var(--muted);border-radius:5px}
.fb-n{width:2.8em;text-align:right;color:var(--muted);font-variant-numeric:tabular-nums}
.fb.g .fb-bar span{background:var(--accent)}.fb.g .fb-l{color:var(--accent)}
.fb.y .fb-bar span{background:var(--accent-2)}.fb.y .fb-l{color:var(--accent-2)}
.fb.b{opacity:.55}.fb.b .fb-l{text-decoration:line-through}

.heat{display:grid;grid-template-columns:repeat(5,1fr);gap:.5rem}
.heat-col{display:flex;flex-direction:column;gap:.3rem}
.heat-p{font-family:var(--font-mono);font-size:.7rem;color:var(--muted);text-align:center;text-transform:uppercase;letter-spacing:.05em}
.heat-c{display:flex;align-items:center;justify-content:space-between;gap:.3ch;padding:.32em .5em;border-radius:6px;
  background:color-mix(in srgb,var(--accent) calc(var(--v,0)*60%),var(--card));border:1px solid var(--border)}
.heat-c b{font-family:var(--font-mono);font-size:.95rem}
.heat-c i{font-style:normal;font-size:.7rem;color:var(--muted);font-family:var(--font-mono)}

@media(max-width:520px){
  .wl-t{width:44px;height:44px;font-size:1.25rem}
  .kb-k{height:42px;font-size:.85rem}
  .heat-c{padding:.28em .35em}.heat-c i{display:none}
}