/* =========================================================
   Puzzle zone — 1-bit / "Return of the Obra Dinn" aesthetic
   Scoped under .puzzle-zone so it never leaks into the site.
   ========================================================= */

.puzzle-zone {
  --pz-paper: #e9e1cc;   /* parchment                     */
  --pz-panel: #e2d9c0;   /* slightly deeper panel         */
  --pz-ink:   #212b1c;   /* near-black forest ink         */
  --pz-ink-2: #3c4a34;   /* softer ink                    */
  --pz-line:  #212b1c;
  --pz-shadow:#212b1c;
  --pz-pixel: "Silkscreen", "IBM Plex Mono", monospace;
  --pz-term:  "VT323", "IBM Plex Mono", monospace;
  --pz-mono:  "IBM Plex Mono", ui-monospace, monospace;

  background: var(--pz-paper);
  color: var(--pz-ink);
  border: 2px solid var(--pz-line);
  padding: clamp(1.2rem, 4vw, 2.4rem);
  position: relative;
  image-rendering: pixelated;
}
:root[data-theme="dark"] .puzzle-zone {
  --pz-paper: #171b12; --pz-panel: #1f2417;
  --pz-ink: #d9d0b4; --pz-ink-2: #b3ac90;
  --pz-line: #d9d0b4; --pz-shadow: #000;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .puzzle-zone {
    --pz-paper: #171b12; --pz-panel: #1f2417;
    --pz-ink: #d9d0b4; --pz-ink-2: #b3ac90;
    --pz-line: #d9d0b4; --pz-shadow: #000;
  }
}

/* faint ordered-dither paper texture */
.puzzle-zone::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .06;
  background-image:
    linear-gradient(45deg, var(--pz-ink) 25%, transparent 25%, transparent 75%, var(--pz-ink) 75%),
    linear-gradient(45deg, var(--pz-ink) 25%, transparent 25%, transparent 75%, var(--pz-ink) 75%);
  background-size: 4px 4px; background-position: 0 0, 2px 2px;
}
.puzzle-zone > * { position: relative; z-index: 1; }

/* reusable dither strip */
.pz-dither {
  height: 8px; margin: 1rem 0; opacity: .8;
  background-image:
    linear-gradient(45deg, var(--pz-ink) 25%, transparent 25%, transparent 75%, var(--pz-ink) 75%),
    linear-gradient(45deg, var(--pz-ink) 25%, transparent 25%, transparent 75%, var(--pz-ink) 75%);
  background-size: 4px 4px; background-position: 0 0, 2px 2px;
}

.puzzle-zone a { color: var(--pz-ink); }

/* ---- header ---- */
.pz-head { text-align: center; }
.pz-kicker { font-family: var(--pz-mono); letter-spacing: .35em; text-transform: uppercase; font-size: .72rem; color: var(--pz-ink-2); }
.pz-title {
  font-family: var(--pz-pixel); color: var(--pz-ink);
  font-size: clamp(1.3rem, 4.5vw, 2rem); line-height: 1.1; margin: .7rem 0 .5rem;
  text-transform: uppercase; letter-spacing: .02em;
}
.pz-sub { font-family: var(--pz-term); font-size: 1.25rem; color: var(--pz-ink-2); margin: 0; }

/* ---- puzzle selector ---- */
.pz-selector { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: center; margin: 1.2rem 0; }
.pz-chip {
  font-family: var(--pz-pixel); font-size: .7rem;
  width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  border: 2px solid var(--pz-line); background: var(--pz-paper); color: var(--pz-ink);
  cursor: pointer; position: relative; transition: transform .08s ease;
}
.pz-chip:hover { transform: translate(-1px,-1px); }
.pz-chip.active { background: var(--pz-ink); color: var(--pz-paper); }
.pz-chip.solved::after {
  content: "✓"; position: absolute; top: -8px; right: -8px;
  width: 16px; height: 16px; font-size: .7rem; font-family: var(--pz-mono);
  background: var(--pz-ink); color: var(--pz-paper);
  border: 1px solid var(--pz-line); display: flex; align-items: center; justify-content: center;
}

/* ---- puzzle card ---- */
.pz-card {
  border: 2px solid var(--pz-line); background: var(--pz-panel);
  box-shadow: 6px 6px 0 0 var(--pz-shadow);
  padding: clamp(1.1rem, 3vw, 1.8rem); margin-top: 1.4rem;
}
.pz-clue {
  font-family: var(--pz-term); font-size: clamp(1.4rem, 3.6vw, 1.9rem);
  line-height: 1.25; color: var(--pz-ink); margin: 0; text-align: center;
}
.pz-enum { color: var(--pz-ink-2); }

.pz-meta { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: .9rem; font-family: var(--pz-mono); font-size: .72rem; color: var(--pz-ink-2); text-transform: uppercase; letter-spacing: .12em; }
.pz-pips { letter-spacing: .15em; font-size: .9rem; }

/* ---- letter boxes ---- */
.pz-boxes { display: flex; flex-wrap: wrap; gap: .4rem; justify-content: center; margin: 1.4rem 0; }
.pz-box {
  width: clamp(38px, 11vw, 52px); height: clamp(46px, 13vw, 60px);
  font-family: var(--pz-mono); font-weight: 600; font-size: clamp(1.2rem, 4vw, 1.7rem);
  text-align: center; text-transform: uppercase; color: var(--pz-ink);
  background: var(--pz-paper); border: 2px solid var(--pz-line); border-radius: 0;
  caret-color: var(--pz-ink); outline: none; padding: 0;
}
.pz-box:focus { background: var(--pz-ink); color: var(--pz-paper); caret-color: var(--pz-paper); }
.pz-box.correct { background: var(--pz-ink); color: var(--pz-paper); }
.pz-box.shake { animation: pz-shake .4s ease; }
@keyframes pz-shake {
  0%,100%{transform:translateX(0)} 20%{transform:translateX(-5px)}
  40%{transform:translateX(5px)} 60%{transform:translateX(-4px)} 80%{transform:translateX(4px)}
}

/* ---- buttons ---- */
.pz-actions { display: flex; gap: .7rem; justify-content: center; flex-wrap: wrap; }
.pz-btn {
  font-family: var(--pz-pixel); font-size: .72rem; text-transform: uppercase;
  padding: .7rem 1.2rem; cursor: pointer; color: var(--pz-ink);
  background: var(--pz-paper); border: 2px solid var(--pz-line); border-radius: 0;
  box-shadow: 4px 4px 0 0 var(--pz-shadow); transition: transform .06s ease, box-shadow .06s ease;
}
.pz-btn:hover { transform: translate(-1px,-1px); box-shadow: 5px 5px 0 0 var(--pz-shadow); }
.pz-btn:active { transform: translate(2px,2px); box-shadow: 2px 2px 0 0 var(--pz-shadow); }
.pz-btn--solid { background: var(--pz-ink); color: var(--pz-paper); }
.pz-btn:disabled { opacity: .45; cursor: default; box-shadow: 4px 4px 0 0 var(--pz-shadow); transform: none; }

/* ---- floating message ---- */
.pz-msg { text-align: center; min-height: 1.6rem; margin-top: 1rem; font-family: var(--pz-term); font-size: 1.35rem; color: var(--pz-ink); }
.pz-msg.flash { animation: pz-flash 1.4s ease forwards; }
@keyframes pz-flash { 0%{opacity:0; transform:translateY(-6px)} 15%{opacity:1; transform:none} 80%{opacity:1} 100%{opacity:0; transform:translateY(8px)} }

/* ---- hints ---- */
.pz-hints { margin-top: 1.2rem; display: none; }
.pz-hints.open { display: block; }
.pz-hint {
  border: 2px solid var(--pz-line); background: var(--pz-paper);
  padding: .6rem .9rem; margin-bottom: .55rem; cursor: pointer;
  font-family: var(--pz-mono); font-size: .85rem; color: var(--pz-ink);
  display: flex; flex-wrap: wrap; gap: .2rem .6rem; align-items: baseline;
}
.pz-hint .pz-hint-icon { font-family: var(--pz-mono); }
.pz-hint .pz-hint-label { text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; }
/* Revealed hint text drops onto its own line, left-aligned under the label */
.pz-hint .pz-hint-body {
  display: none; flex-basis: 100%; margin: .45rem 0 .1rem; padding-left: 1.7rem;
  text-align: left; color: var(--pz-ink-2); font-family: var(--pz-term); font-size: 1.2rem; line-height: 1.3;
}
.pz-hint.revealed { background: var(--pz-panel); }
.pz-hint.revealed .pz-hint-body { display: block; }

/* ---- submit-to-ledger form (in the solved state) ---- */
.pz-submit { display: flex; flex-wrap: wrap; gap: .6rem; justify-content: center; align-items: center; margin: 1.2rem 0; }
.pz-input {
  font-family: var(--pz-mono); font-size: .85rem; text-transform: uppercase; letter-spacing: .06em;
  padding: .62rem .8rem; color: var(--pz-ink); background: var(--pz-paper);
  border: 2px solid var(--pz-line); border-radius: 0; outline: none; width: min(220px, 60vw);
}
.pz-input:focus { box-shadow: 3px 3px 0 0 var(--pz-shadow); }
.pz-input::placeholder { color: var(--pz-ink-2); opacity: .7; }
.pz-submit-status { flex-basis: 100%; text-align: center; margin: .3rem 0 0; font-family: var(--pz-term); font-size: 1.2rem; color: var(--pz-ink-2); }

/* ---- leaderboard ---- */
.pz-leaderboard {
  border: 2px solid var(--pz-line); background: var(--pz-panel);
  box-shadow: 6px 6px 0 0 var(--pz-shadow); padding: clamp(1rem, 3vw, 1.5rem); margin-top: 1.6rem;
}
.pz-lb-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.pz-lb-title { font-family: var(--pz-pixel); font-size: .82rem; text-transform: uppercase; color: var(--pz-ink); }
.pz-lb-count { font-family: var(--pz-term); font-size: 1.25rem; color: var(--pz-ink-2); }
.pz-lb-head + .pz-dither { margin: .8rem 0 1rem; }
table.pz-lb { width: 100%; border-collapse: collapse; font-family: var(--pz-mono); font-size: .82rem; color: var(--pz-ink); }
.pz-lb th, .pz-lb td { border: 2px solid var(--pz-line); padding: .45rem .6rem; text-align: left; }
.pz-lb th { text-transform: uppercase; letter-spacing: .08em; font-size: .66rem; background: var(--pz-paper); }
.pz-lb th:first-child, .pz-lb td:first-child { text-align: center; width: 2.6rem; }
.pz-lb th:nth-child(n+3), .pz-lb td:nth-child(n+3) { text-align: center; }
.pz-lb tbody tr:first-child td { font-weight: 600; }
.pz-lb-empty { font-family: var(--pz-term); font-size: 1.25rem; color: var(--pz-ink-2); margin: .2rem 0; }

/* ---- solved overlay ---- */
.pz-solved { display: none; margin-top: 1.4rem; text-align: center; }
.pz-solved.show { display: block; }
.pz-stamp {
  display: inline-block; font-family: var(--pz-pixel); font-size: clamp(1.4rem, 5vw, 2.2rem);
  color: var(--pz-paper); background: var(--pz-ink); border: 3px solid var(--pz-line);
  padding: .5rem 1.4rem; transform: rotate(-6deg); letter-spacing: .06em;
  box-shadow: 6px 6px 0 0 var(--pz-shadow); animation: pz-stamp .35s cubic-bezier(.2,1.4,.4,1) both;
}
@keyframes pz-stamp { 0%{transform:scale(2.4) rotate(-6deg); opacity:0} 100%{transform:scale(1) rotate(-6deg); opacity:1} }
.pz-stats { font-family: var(--pz-term); font-size: 1.3rem; color: var(--pz-ink-2); margin: 1.1rem 0; }