* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  /* Octopus — deep ocean ink, rust reds, coral (default) */
  --node-hidden-fill: #f5efe6;
  --node-hidden-stroke: #a08060;
  --node-terminal-stroke: #7a5a3a;
  --node-revealed-fill: #1a1a3a;
  --node-revealed-stroke: #0e0e28;
  --node-found-fill: #c44230;
  --node-found-stroke: #a03020;
  --node-overlap-fill: #e8955a;
  --node-overlap-stroke: #cc7a3a;
  --node-missed-fill: #c4b8a8;
  --node-missed-stroke: #a09888;
  --node-celebrate-fill: #d4a040;
  --node-celebrate-stroke: #b88830;
  --letter-color: #faf0e6;
  --letter-found-color: var(--letter-color);
  --letter-overlap-color: #2a1808;
  --letter-revealed-color: var(--letter-color);
  --letter-missed-color: #d8d0c4;
  --edge-color: #c4b4a0;
  --word-label-color: #a09080;
  --word-label-found: #c44230;
  /* Guess tags */
  --correct-bg: #f5ddd8;
  --correct-text: #6a1a10;
  --wrong-bg: #e8d4c8;
  --wrong-text: #5a3020;
  --overlap-bg: #fae8d8;
  --overlap-text: #7a4a20;
  --duplicate-bg: #f0e8d8;
  --duplicate-text: #6a5a3a;
  /* Banners */
  --win-bg: #f5ddd8;
  --win-text: #6a1a10;
  --lose-bg: #e8d4c8;
  --lose-text: #5a3020;
  /* Input flash */
  --input-correct-border: #c44230;
  --input-correct-flash: #f5ddd8;
  /* Legend */
  --legend-hidden-bg: #f5efe6;
  --legend-hidden-border: #a08060;
  --legend-terminal-border: #7a5a3a;
  /* Hints */
  --node-hint-fill: #7a8aaa;
  --node-hint-stroke: #697999;
  --letter-hint-color: #faf0e6;
  /* Page */
  --page-bg: #fafafa;
  --page-text: #1a1a2e;
  --panel-bg: white;
  --panel-border: #e0e0e0;
  --subtle-text: #888;
  --status-text: #1a1a2e;
}

/* High Contrast */
[data-scheme="contrast"] {
  --node-hidden-fill: white;
  --node-hidden-stroke: #000;
  --node-terminal-stroke: #000;
  --node-revealed-fill: #000;
  --node-revealed-stroke: #000;
  --node-found-fill: #0055ff;
  --node-found-stroke: #0033cc;
  --node-overlap-fill: #ff8800;
  --node-overlap-stroke: #cc6600;
  --node-missed-fill: #888;
  --node-missed-stroke: #666;
  --node-celebrate-fill: #ffcc00;
  --node-celebrate-stroke: #cc9900;
  --letter-color: white;
  --letter-missed-color: #ddd;
  --edge-color: #666;
  --word-label-color: #666;
  --word-label-found: #0055ff;
  --correct-bg: #cce0ff;
  --correct-text: #002266;
  --wrong-bg: #ffcccc;
  --wrong-text: #660000;
  --overlap-bg: #ffe6cc;
  --overlap-text: #663300;
  --duplicate-bg: #ffffcc;
  --duplicate-text: #666600;
  --win-bg: #cce0ff;
  --win-text: #002266;
  --lose-bg: #ffcccc;
  --lose-text: #660000;
  --input-correct-border: #0055ff;
  --input-correct-flash: #cce0ff;
  --legend-hidden-bg: white;
  --legend-hidden-border: #000;
  --legend-terminal-border: #000;
  --node-hint-fill: #8800cc;
  --node-hint-stroke: #6600aa;
  --letter-hint-color: white;
}

/* Nautilus (Deuteranopia-friendly: blue/orange, no red-green) */
[data-scheme="nautilus"] {
  --node-hidden-fill: white;
  --node-hidden-stroke: #888;
  --node-terminal-stroke: #555;
  --node-revealed-fill: #332288;
  --node-revealed-stroke: #332288;
  --node-found-fill: #0077bb;
  --node-found-stroke: #005588;
  --node-overlap-fill: #ee7733;
  --node-overlap-stroke: #cc5511;
  --node-missed-fill: #bbbbbb;
  --node-missed-stroke: #999999;
  --node-celebrate-fill: #eedd44;
  --node-celebrate-stroke: #ccbb22;
  --letter-color: white;
  --letter-overlap-color: #2a1508;
  --letter-missed-color: #ddd;
  --edge-color: #ccc;
  --word-label-color: #999;
  --word-label-found: #0077bb;
  --correct-bg: #d0e4f5;
  --correct-text: #003366;
  --wrong-bg: #fde0cc;
  --wrong-text: #773300;
  --overlap-bg: #fce8d5;
  --overlap-text: #884400;
  --duplicate-bg: #f5f0cc;
  --duplicate-text: #665500;
  --win-bg: #d0e4f5;
  --win-text: #003366;
  --lose-bg: #fde0cc;
  --lose-text: #773300;
  --input-correct-border: #0077bb;
  --input-correct-flash: #d0e4f5;
  --legend-hidden-bg: white;
  --legend-hidden-border: #888;
  --legend-terminal-border: #555;
  --node-hint-fill: #cc79a7;
  --node-hint-stroke: #aa5588;
  --letter-hint-color: white;
}

/* Jellyfish — bioluminescent, translucent pinks and purples */
[data-scheme="jellyfish"] {
  --node-hidden-fill: #f8f0ff;
  --node-hidden-stroke: #c9a0dc;
  --node-terminal-stroke: #a855b5;
  --node-revealed-fill: #7b2d8e;
  --node-revealed-stroke: #6a1b7a;
  --node-found-fill: #e44dac;
  --node-found-stroke: #c23590;
  --node-overlap-fill: #5ce0d6;
  --node-overlap-stroke: #3bbfb5;
  --node-missed-fill: #c9b8d4;
  --node-missed-stroke: #a898b5;
  --node-celebrate-fill: #b8f06a;
  --node-celebrate-stroke: #8ecc3a;
  --letter-color: white;
  --letter-overlap-color: #0a2a28;
  --letter-missed-color: #e8ddf0;
  --edge-color: #d8c0e8;
  --word-label-color: #b088c4;
  --word-label-found: #e44dac;
  --correct-bg: #f5dff0;
  --correct-text: #6a1b5e;
  --wrong-bg: #f0d0e8;
  --wrong-text: #882255;
  --overlap-bg: #d8f5f2;
  --overlap-text: #1a7a70;
  --duplicate-bg: #eeddf5;
  --duplicate-text: #6a4480;
  --win-bg: #f5dff0;
  --win-text: #6a1b5e;
  --lose-bg: #f0d0e8;
  --lose-text: #882255;
  --input-correct-border: #e44dac;
  --input-correct-flash: #f5dff0;
  --legend-hidden-bg: #f8f0ff;
  --legend-hidden-border: #c9a0dc;
  --legend-terminal-border: #a855b5;
  --node-hint-fill: #5da8c4;
  --node-hint-stroke: #4c97b3;
  --letter-hint-color: white;
}

/* Squid Ink — bioluminescent deep ocean */
[data-scheme="squid"] {
  --node-hidden-fill: #181830;
  --node-hidden-stroke: #3a3a5e;
  --node-terminal-stroke: #5a5a8e;
  --node-revealed-fill: #1a1a40;
  --node-revealed-stroke: #2a2a60;
  --node-found-fill: #00e5ff;
  --node-found-stroke: #00b8cc;
  --node-overlap-fill: #76ff03;
  --node-overlap-stroke: #55cc00;
  --node-missed-fill: #2a2a3e;
  --node-missed-stroke: #3a3a4e;
  --node-celebrate-fill: #ff4081;
  --node-celebrate-stroke: #cc3366;
  --letter-color: #e0f0ff;
  --letter-found-color: #0a1a2a;
  --letter-overlap-color: #0a1a0a;
  --letter-missed-color: #5a5a6e;
  --edge-color: #2a2a4e;
  --word-label-color: #5a5a8e;
  --word-label-found: #00e5ff;
  --correct-bg: #0a2a30;
  --correct-text: #00e5ff;
  --wrong-bg: #1a1a28;
  --wrong-text: #6a6a8e;
  --overlap-bg: #0a1a10;
  --overlap-text: #76ff03;
  --duplicate-bg: #1a1a28;
  --duplicate-text: #5a5a7e;
  --win-bg: #0a2a30;
  --win-text: #00e5ff;
  --lose-bg: #1a1a28;
  --lose-text: #6a6a8e;
  --input-correct-border: #00e5ff;
  --input-correct-flash: #0a2a30;
  --legend-hidden-bg: #181830;
  --legend-hidden-border: #3a3a5e;
  --legend-terminal-border: #5a5a8e;
  --node-hint-fill: #ff4081;
  --node-hint-stroke: #cc3366;
  --letter-hint-color: white;
  --page-bg: #080818;
  --page-text: #c0d0e0;
  --panel-bg: #101028;
  --panel-border: #2a2a4e;
  --subtle-text: #5a5a8e;
  --status-text: #c0d0e0;
}

/* Cthulhu — eldritch horror */
[data-scheme="cthulhu"] {
  --node-hidden-fill: #e8e0f0;
  --node-hidden-stroke: #8a7a9a;
  --node-terminal-stroke: #6a5a7a;
  --node-revealed-fill: #2d1b4e;
  --node-revealed-stroke: #1e0d3a;
  --node-found-fill: #39ff14;
  --node-found-stroke: #20cc00;
  --node-overlap-fill: #ccff00;
  --node-overlap-stroke: #99cc00;
  --node-missed-fill: #4a3a5e;
  --node-missed-stroke: #5a4a6e;
  --node-celebrate-fill: #e040a0;
  --node-celebrate-stroke: #bb2288;
  --letter-color: white;
  --letter-found-color: #0a1a08;
  --letter-overlap-color: #1a1a00;
  --letter-missed-color: #6a5a7a;
  --edge-color: #3a2a4e;
  --word-label-color: #6a5a7a;
  --word-label-found: #39ff14;
  --correct-bg: #0a1a08;
  --correct-text: #39ff14;
  --wrong-bg: #1a1028;
  --wrong-text: #7a6a8e;
  --overlap-bg: #1a1a08;
  --overlap-text: #ccff00;
  --duplicate-bg: #1a1028;
  --duplicate-text: #6a5a7e;
  --win-bg: #0a1a08;
  --win-text: #39ff14;
  --lose-bg: #1a1028;
  --lose-text: #7a6a8e;
  --input-correct-border: #39ff14;
  --input-correct-flash: #0a1a08;
  --legend-hidden-bg: #e8e0f0;
  --legend-hidden-border: #8a7a9a;
  --legend-terminal-border: #6a5a7a;
  --node-hint-fill: #e040a0;
  --node-hint-stroke: #bb2288;
  --letter-hint-color: white;
  --page-bg: #0e0a14;
  --page-text: #c0b8d0;
  --panel-bg: #1a1028;
  --panel-border: #3a2a4e;
  --subtle-text: #6a5a7a;
  --status-text: #c0b8d0;
}

/* Anglerfish — pitch-black abyss */
[data-scheme="anglerfish"] {
  --node-hidden-fill: #121218;
  --node-hidden-stroke: #2a2a35;
  --node-terminal-stroke: #3a3a48;
  --node-revealed-fill: #1a1a22;
  --node-revealed-stroke: #2a2a33;
  --node-found-fill: #ffb700;
  --node-found-stroke: #dd9900;
  --node-overlap-fill: #cc6600;
  --node-overlap-stroke: #aa5500;
  --node-missed-fill: #1e1e28;
  --node-missed-stroke: #2e2e38;
  --node-celebrate-fill: #ff4444;
  --node-celebrate-stroke: #cc2222;
  --letter-color: #fff8e0;
  --letter-found-color: #1a1000;
  --letter-missed-color: #3a3a48;
  --edge-color: #1e1e28;
  --word-label-color: #3a3a48;
  --word-label-found: #ffb700;
  --correct-bg: #1a1508;
  --correct-text: #ffb700;
  --wrong-bg: #121218;
  --wrong-text: #4a4a58;
  --overlap-bg: #1a1208;
  --overlap-text: #cc6600;
  --duplicate-bg: #121218;
  --duplicate-text: #3a3a48;
  --win-bg: #1a1508;
  --win-text: #ffb700;
  --lose-bg: #121218;
  --lose-text: #4a4a58;
  --input-correct-border: #ffb700;
  --input-correct-flash: #1a1508;
  --legend-hidden-bg: #121218;
  --legend-hidden-border: #2a2a35;
  --legend-terminal-border: #3a3a48;
  --node-hint-fill: #884422;
  --node-hint-stroke: #663311;
  --letter-hint-color: #fff8e0;
  --page-bg: #050508;
  --page-text: #8a8a98;
  --panel-bg: #0e0e14;
  --panel-border: #2a2a35;
  --subtle-text: #4a4a58;
  --status-text: #8a8a98;
}

/* Coral Reef — vivid tropical */
[data-scheme="coral"] {
  --node-hidden-fill: white;
  --node-hidden-stroke: #88bfcc;
  --node-terminal-stroke: #558899;
  --node-revealed-fill: #1a4b7a;
  --node-revealed-stroke: #1a4b7a;
  --node-found-fill: #ff6b6b;
  --node-found-stroke: #e05555;
  --node-overlap-fill: #48d1a0;
  --node-overlap-stroke: #33b888;
  --node-missed-fill: #b0bcc4;
  --node-missed-stroke: #90a0a8;
  --node-celebrate-fill: #ffd93d;
  --node-celebrate-stroke: #e6c235;
  --letter-color: white;
  --letter-overlap-color: #0a2a1a;
  --letter-missed-color: #d0d8dd;
  --edge-color: #c0dde8;
  --word-label-color: #88aabb;
  --word-label-found: #ff6b6b;
  --correct-bg: #ffe0e0;
  --correct-text: #8a2020;
  --wrong-bg: #e8eef0;
  --wrong-text: #506068;
  --overlap-bg: #d8f5ea;
  --overlap-text: #1a6a50;
  --duplicate-bg: #e0f0f5;
  --duplicate-text: #3a7088;
  --win-bg: #ffe0e0;
  --win-text: #8a2020;
  --lose-bg: #e8eef0;
  --lose-text: #506068;
  --input-correct-border: #ff6b6b;
  --input-correct-flash: #ffe0e0;
  --legend-hidden-bg: white;
  --legend-hidden-border: #88bfcc;
  --legend-terminal-border: #558899;
  --node-hint-fill: #ffaa55;
  --node-hint-stroke: #dd8833;
  --letter-hint-color: white;
}

/* No Nonsense — monochrome, no color states */
[data-scheme="nononsense"] {
  --node-hidden-fill: white;
  --node-hidden-stroke: #000;
  --node-terminal-stroke: #000;
  --node-revealed-fill: white;
  --node-revealed-stroke: #000;
  --node-found-fill: white;
  --node-found-stroke: #000;
  --node-overlap-fill: white;
  --node-overlap-stroke: #000;
  --node-missed-fill: white;
  --node-missed-stroke: #888;
  --node-celebrate-fill: white;
  --node-celebrate-stroke: #000;
  --letter-color: #000;
  --letter-found-color: #000;
  --letter-overlap-color: #000;
  --letter-revealed-color: #000;
  --letter-missed-color: #888;
  --letter-hint-color: #000;
  --edge-color: #000;
  --word-label-color: #888;
  --word-label-found: #000;
  --correct-bg: #e8e8e8;
  --correct-text: #000;
  --wrong-bg: #f0f0f0;
  --wrong-text: #555;
  --overlap-bg: #e8e8e8;
  --overlap-text: #000;
  --duplicate-bg: #f0f0f0;
  --duplicate-text: #555;
  --win-bg: #e8e8e8;
  --win-text: #000;
  --lose-bg: #f0f0f0;
  --lose-text: #555;
  --input-correct-border: #000;
  --input-correct-flash: #e8e8e8;
  --legend-hidden-bg: white;
  --legend-hidden-border: #000;
  --legend-terminal-border: #000;
  --node-hint-fill: white;
  --node-hint-stroke: #000;
  --page-bg: white;
  --page-text: #000;
  --panel-bg: white;
  --panel-border: #ccc;
  --subtle-text: #888;
  --status-text: #000;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--page-bg);
  color: var(--page-text);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

header {
  width: 100%;
  max-width: 800px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
}

header h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.header-buttons { display: flex; gap: 8px; }
header button {
  padding: 8px 16px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  background: var(--panel-bg);
  color: var(--page-text);
  cursor: pointer;
  font-size: 14px;
  transition: background 0.15s;
}
header button:hover { opacity: 0.85; }
#settings-btn {
  font-size: 26px;
  cursor: pointer;
  color: var(--subtle-text);
  transition: color 0.15s;
  line-height: 1;
  display: flex;
  align-items: center;
  padding: 0 4px;
}
#settings-btn:hover { color: var(--page-text); }

#puzzle-label {
  text-align: center;
  font-size: 13px;
  color: var(--subtle-text);
  margin-top: -4px;
  margin-bottom: 4px;
}

#loading-indicator {
  text-align: center;
  padding: 60px 20px;
  color: var(--subtle-text);
}
.loading-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--border-color, #e0e0e0);
  border-top-color: var(--page-text, #333);
  border-radius: 50%;
  margin: 0 auto 12px;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-size: 14px; }

#game-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  padding: 0 20px;
  flex: 1;
}

/* SVG tree area */
#tree-container {
  width: 100%;
  background: white;
  border: 1px solid #e0e0e0;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 20px;
  min-height: 200px;
}

#tree-svg {
  display: block;
  width: 100%;
}

/* Tree node styles */
.tree-edge {
  stroke: var(--edge-color);
  stroke-width: 2;
  fill: none;
}

.tree-node-circle {
  stroke: var(--node-hidden-stroke);
  stroke-width: 2;
  fill: var(--node-hidden-fill);
  transition: fill 0.4s ease, stroke 0.4s ease, r 0.3s ease;
}

.tree-node-circle.terminal {
  stroke-width: 3;
  stroke: var(--node-terminal-stroke);
}

.tree-node-circle.revealed {
  fill: var(--node-revealed-fill);
  stroke: var(--node-revealed-stroke);
}

.tree-node-circle.found {
  fill: var(--node-found-fill);
  stroke: var(--node-found-stroke);
}

.tree-node-circle.just-revealed {
  animation: revealPop 0.5s ease;
}

@keyframes revealPop {
  0% { r: 14; }
  50% { r: 20; }
  100% { r: 16; }
}

.tree-node-circle.pulse-found {
  fill: var(--node-found-fill);
  stroke: var(--node-found-stroke);
  animation: pulsePop 0.35s ease;
}

.tree-node-circle.pulse-revealed {
  fill: var(--node-revealed-fill);
  stroke: var(--node-revealed-stroke);
  animation: pulsePop 0.35s ease;
}

.tree-node-circle.celebrate {
  fill: var(--node-celebrate-fill);
  stroke: var(--node-celebrate-stroke);
  animation: pulsePop 0.35s ease;
}

.tree-node-circle.pulsePop-inline { animation: pulsePop 0.35s ease; }

.tree-node-circle.party-0 { fill: #9b59b6; stroke: #8e44ad; animation: pulsePop 0.35s ease; }
.tree-node-circle.party-1 { fill: #e67e22; stroke: #d35400; animation: pulsePop 0.35s ease; }
.tree-node-circle.party-2 { fill: #3498db; stroke: #2980b9; animation: pulsePop 0.35s ease; }
.tree-node-circle.party-3 { fill: #e74c6f; stroke: #c0392b; animation: pulsePop 0.35s ease; }
.tree-node-circle.party-4 { fill: #2ecc71; stroke: #27ae60; animation: pulsePop 0.35s ease; }
.tree-node-circle.party-5 { fill: #f1c40f; stroke: #d4ac0f; animation: pulsePop 0.35s ease; }
.tree-node-circle.party-6 { fill: #1abc9c; stroke: #16a085; animation: pulsePop 0.35s ease; }
.tree-node-circle.party-7 { fill: #e84393; stroke: #d63384; animation: pulsePop 0.35s ease; }

@keyframes pulsePop {
  0% { r: 16; }
  40% { r: 21; }
  100% { r: 16; }
}


.tree-node-letter {
  font-size: 14px;
  font-weight: 700;
  fill: var(--letter-color);
  text-anchor: middle;
  dominant-baseline: central;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.tree-node-letter.visible {
  opacity: 1;
}
.tree-node-letter.found {
  fill: var(--letter-found-color);
}
.tree-node-letter.revealed {
  fill: var(--letter-revealed-color);
}
.tree-node-letter.overlap {
  fill: var(--letter-overlap-color);
}

/* Word labels at end of branches */
.word-label {
  font-size: 11px;
  fill: var(--word-label-color);
  text-anchor: start;
  dominant-baseline: central;
  transition: fill 0.3s ease;
}
.word-label.found {
  fill: var(--word-label-found);
  font-weight: 600;
}

/* Legend */
#legend {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--subtle-text);
}
#legend span { display: flex; align-items: center; gap: 4px; }
#legend .dot {
  width: 12px; height: 12px; border-radius: 50%;
  display: inline-block; border: 2px solid var(--legend-hidden-border);
}
#legend .dot.hidden-dot { background: var(--legend-hidden-bg); }
#legend .dot.revealed-dot { background: var(--node-revealed-fill); border-color: var(--node-revealed-stroke); }
#legend .dot.terminal-dot { background: var(--legend-hidden-bg); border-width: 3px; border-color: var(--legend-terminal-border); }
#legend .dot.found-dot { background: var(--node-found-fill); border-color: var(--node-found-stroke); }
#legend .dot.overlap-dot { background: var(--node-overlap-fill); border-color: var(--node-overlap-stroke); }
#legend .dot.hint-dot { background: var(--node-hint-fill); border-color: var(--node-hint-stroke); }

/* Overlap-revealed nodes: distinct style from exact-match reveals */
.tree-node-circle.overlap-revealed {
  fill: var(--node-overlap-fill);
  stroke: var(--node-overlap-stroke);
}
.tree-node-circle.overlap-revealed.terminal {
  fill: var(--node-overlap-fill);
  stroke: var(--node-overlap-stroke);
}

/* Hint nodes */
.tree-node-circle.hint {
  fill: var(--node-hint-fill);
  stroke: var(--node-hint-stroke);
  stroke-dasharray: 4 3;
}
.tree-node-letter.hint {
  fill: var(--letter-hint-color);
}
.hint-direction-dot {
  fill: var(--letter-hint-color);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.hint-direction-dot.visible { opacity: 1; }

/* Missed nodes: greyed out for lose state reveal */
.tree-node-circle.missed {
  fill: var(--node-missed-fill);
  stroke: var(--node-missed-stroke);
}
.tree-node-circle.missed.terminal {
  fill: var(--node-missed-fill);
  stroke: var(--node-missed-stroke);
}
.tree-node-letter.missed {
  fill: var(--letter-missed-color);
}

/* Remaining letters tooltip */
#remaining-tooltip {
  position: absolute;
  z-index: 10;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 6px 8px;
  display: grid;
  grid-template-columns: repeat(13, 1fr);
  gap: 3px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
#remaining-tooltip.visible {
  opacity: 1;
  pointer-events: auto;
}
#remaining-tooltip .rl-cell {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  border-radius: 4px;
  line-height: 1;
}
#remaining-tooltip .rl-cell.rl-matched {
  background: var(--node-found-fill);
  color: var(--letter-found-color);
}
#remaining-tooltip .rl-cell.rl-eliminated {
  background: var(--node-missed-fill);
  color: var(--letter-missed-color);
  text-decoration: line-through;
}
#remaining-tooltip .rl-cell.rl-remaining {
  background: var(--node-hidden-fill);
  color: var(--node-hidden-stroke);
}
@media (max-width: 500px) {
  #remaining-tooltip .rl-cell {
    width: 18px;
    height: 18px;
    font-size: 9px;
  }
  #remaining-tooltip {
    gap: 2px;
    padding: 4px 6px;
  }
}

/* Input area */
/* Guess chain styles */
.guess-chain-edge {
  stroke: var(--edge-color);
  stroke-width: 2;
  fill: none;
}
.guess-chain-node {
  fill: var(--node-hidden-fill);
  stroke: var(--node-hidden-stroke);
  stroke-width: 2;
}
.guess-chain-node.filled {
  fill: var(--panel-bg);
  stroke: var(--node-hidden-stroke);
}
.guess-chain-node.cursor {
  stroke: var(--node-found-stroke);
  stroke-width: 2.5;
  animation: cursorPulse 1s ease-in-out infinite;
}
@keyframes cursorPulse {
  0%, 100% { fill: var(--node-hidden-fill); stroke: var(--node-found-stroke); }
  50% { fill: var(--node-found-fill); stroke: var(--node-found-stroke); }
}
.guess-chain-caret {
  stroke: var(--page-text); stroke-width: 2; stroke-linecap: round;
  opacity: 0;
  pointer-events: none;
}
@keyframes caretBlink {
  0%, 49.9% { opacity: 1; }
  50%, 100% { opacity: 0; }
}
[data-scheme="nononsense"] .guess-chain-node.cursor {
  animation: none;
  fill: var(--node-hidden-fill);
}
[data-scheme="nononsense"] .guess-chain-caret {
  opacity: 1;
  animation: caretBlink 1s step-end infinite;
}
.guess-chain-letter {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  fill: var(--page-text);
  text-anchor: middle;
  dominant-baseline: central;
  pointer-events: none;
}
.guess-chain-node.present {
  fill: var(--node-overlap-fill);
  stroke: var(--node-overlap-stroke);
}
text.guess-chain-letter.present {
  fill: var(--letter-overlap-color, var(--letter-color));
}
.guess-chain-node.miss-letter {
  fill: var(--node-missed-fill);
  stroke: var(--node-missed-stroke);
}
text.guess-chain-letter.miss-letter {
  fill: var(--letter-missed-color);
}
.guess-chain-node.celebrate-reveal {
  animation: pulsePop 0.3s ease-out;
}
.guess-chain-error .guess-chain-node.filled,
.guess-chain-error .guess-chain-node.cursor {
  fill: var(--node-missed-fill);
  stroke: var(--node-missed-stroke);
}
.guess-chain-error {
  animation: chainShake 0.4s ease;
}
@keyframes chainShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}
.guess-chain-message {
  font-family: inherit;
  font-size: 12px;
  fill: #999;
  text-anchor: middle;
  dominant-baseline: auto;
  animation: chainMsgFade 1.5s ease forwards;
}
@keyframes chainMsgFade {
  0% { opacity: 1; }
  70% { opacity: 1; }
  100% { opacity: 0; }
}
}

/* On-screen keyboard */
#onscreen-keyboard {
  max-width: 500px;
  margin: 0 auto 16px;
  user-select: none;
  -webkit-user-select: none;
}
.kb-row {
  display: flex;
  gap: 4px;
  margin-bottom: 4px;
  justify-content: center;
}
.kb-key {
  flex: 1;
  max-width: 42px;
  padding: 10px 0;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  background: var(--panel-bg);
  color: var(--page-text);
  cursor: pointer;
  touch-action: manipulation;
  text-align: center;
}
.kb-key:active, .kb-key.kb-pressed {
  background: var(--node-revealed-fill);
  color: var(--letter-revealed-color);
  border-color: var(--node-revealed-stroke);
}
.kb-key.wide {
  max-width: 64px;
  font-size: 11px;
}
@media (hover: hover) and (pointer: fine) {
  #onscreen-keyboard { display: none; }
}

/* Animations-off mode */
body.no-animations .tree-node-circle,
body.no-animations .guess-chain-node,
body.no-animations .guess-chain-cursor,
body.no-animations .guess-chain-error,
body.no-animations .guess-chain-message {
  animation: none !important;
  transition: none !important;
}
body.no-animations .guess-chain-caret {
  animation: none !important;
}
body.no-animations[data-scheme="nononsense"] .guess-chain-caret {
  opacity: 1;
}

/* Status */
#status {
  text-align: center;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--subtle-text);
}
#status .count { font-weight: 600; color: var(--status-text); }

/* Guess history */
#guess-history {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
  min-height: 28px;
}

.guess-tag {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 500;
}
.guess-tag.correct-guess {
  background: var(--correct-bg);
  color: var(--correct-text);
}
.guess-tag.wrong-guess {
  background: var(--wrong-bg);
  color: var(--wrong-text);
}
.guess-tag.duplicate-guess {
  background: var(--duplicate-bg);
  color: var(--duplicate-text);
}
.guess-tag.overlap-guess {
  background: var(--overlap-bg);
  color: var(--overlap-text);
}

/* Win banner */
#win-banner {
  display: none;
  text-align: center;
  padding: 20px;
  background: #d4edda;
  border-radius: 10px;
  margin-bottom: 20px;
}
#win-banner.show { display: block; }
#win-banner h2 { margin-bottom: 4px; }
#win-banner p { font-size: 14px; }
#win-banner.win { background: var(--win-bg); }
#win-banner.win h2, #win-banner.win p { color: var(--win-text); }
#win-banner.lose { background: var(--lose-bg); }
#win-banner.lose h2, #win-banner.lose p { color: var(--lose-text); }

/* Stats panel */
#stats-panel {
  display: none;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 20px;
  font-size: 13px;
}
#stats-panel.show { display: block; }
#stats-panel h3 {
  font-size: 14px;
  margin-bottom: 10px;
  text-align: center;
  color: var(--subtle-text);
}
#stats-score {
  text-align: center;
  margin-bottom: 14px;
}
#stats-score .score-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--page-text);
  line-height: 1;
}
#stats-score .score-label {
  font-size: 12px;
  color: var(--subtle-text);
  margin-top: 4px;
}
.stats-summary {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 14px;
  font-weight: 600;
}
.stats-summary .stat-value { color: var(--page-text); }
.stats-metrics { border-top: 1px solid var(--panel-border); padding-top: 12px; padding-bottom: 14px; }
.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 4px 0;
}
.stat-row .stat-name { font-weight: 600; color: var(--page-text); }
.stat-row .stat-val { font-weight: 700; color: var(--page-text); font-size: 14px; }
.stat-desc {
  font-size: 11px;
  color: var(--subtle-text);
  margin: 0 0 8px 0;
}
#stats-detail-toggle {
  text-align: center; font-size: 12px; font-weight: 600;
  color: var(--subtle-text); cursor: pointer; padding: 8px 0;
  border-top: 1px solid var(--panel-border);
}
#stats-detail-toggle:hover { color: var(--page-text); }
#stats-detail-icon {
  display: inline-block; transition: transform 0.2s;
  font-size: 18px; line-height: 12px;
  width: 18px; height: 12px;
  text-align: center;
  vertical-align: baseline;
  overflow: hidden;
}
#stats-detail-toggle.expanded #stats-detail-icon {
  transform: rotate(90deg);
}
#stats-detail {
  max-height: 0; overflow: hidden;
  transition: max-height 0.3s ease;
}
#stats-detail.expanded {
  max-height: 600px;
}
@media (max-width: 500px) {
  #stats-detail { display: none !important; }
  #stats-detail-modal {
    display: none; position: fixed; inset: 0; z-index: 100;
    background: rgba(0,0,0,0.3);
    align-items: flex-end; justify-content: center;
  }
  #stats-detail-modal.show { display: flex; }
  #stats-detail-modal-content {
    background: var(--panel-bg);
    border-radius: 16px 16px 0 0;
    padding: 20px; width: 100%; max-height: 80vh;
    overflow-y: auto;
    border-top: 1px solid var(--panel-border);
  }
  #stats-detail-modal-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 12px;
  }
  #stats-detail-modal-title {
    font-size: 15px; font-weight: 700; color: var(--page-text);
  }
  #stats-detail-modal-close {
    border: none; background: none; font-size: 22px;
    cursor: pointer; color: var(--subtle-text); padding: 0; line-height: 1;
  }
}
@media (min-width: 501px) {
  #stats-detail-modal { display: none !important; }
}
.share-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  margin-bottom: 8px;
  justify-content: center;
}
.share-actions button {
  padding: 8px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  background: var(--panel-bg);
  color: var(--page-text);
  font-size: 12px;
  cursor: pointer;
}
.share-actions button:hover { opacity: 0.85; }
.stats-actions {
  display: flex;
  gap: 8px;
  border-top: 1px solid var(--panel-border);
  padding-top: 12px;
  justify-content: center;
}
.stats-actions button {
  padding: 8px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  background: var(--panel-bg);
  color: var(--page-text);
  font-size: 12px;
  cursor: pointer;
}
.stats-actions button:hover { opacity: 0.85; }

/* Trend chart icon */
.trend-icon {
  display: inline-block;
  cursor: pointer;
  vertical-align: middle;
  margin-left: 8px;
  opacity: 0.4;
  transition: opacity 0.2s;
}
.trend-icon:hover { opacity: 0.85; }

/* Trend popup overlay */
#trend-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.25);
  z-index: 100;
}
#trend-overlay.show { display: block; }

/* Trend popup */
#trend-popup {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 20px;
  z-index: 101;
  width: 90%;
  max-width: 380px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}
#trend-popup.show { display: block; }

.trend-popup-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.trend-popup-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--page-text);
}
#trend-close-btn {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--subtle-text);
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}
#trend-close-btn:hover { color: var(--page-text); }

.trend-section { margin-bottom: 16px; }
.trend-section:last-child { margin-bottom: 0; }
.trend-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--subtle-text);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}



.theme-opt {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 0.15s;
}
.theme-opt.active {
  border-color: currentColor;
}

/* Settings overlay & panel */
#settings-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.3); z-index: 100;
}
#settings-overlay.open { display: block; }
#settings-panel {
  display: none; position: fixed; top: 0; right: 0;
  height: 100%; width: min(340px, 100vw); z-index: 101;
  background: var(--panel-bg); border-left: 1px solid var(--panel-border);
  padding: 20px; overflow-y: auto; box-sizing: border-box;
  transform: translateX(100%); transition: transform 0.2s;
}
#settings-panel.open { display: block; transform: translateX(0); }
.settings-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px;
}
.settings-title { font-size: 18px; font-weight: 700; color: var(--page-text); }
#settings-close {
  border: none; background: none; font-size: 24px;
  cursor: pointer; color: var(--subtle-text); padding: 0; line-height: 1;
}

/* Preview area */
#settings-preview { margin-bottom: 16px; }
#settings-preview svg { width: 100%; display: block; }

/* Theme pills in settings */
.settings-section-label {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--subtle-text); font-weight: 600; display: block; margin-bottom: 8px;
}
#settings-themes { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }

/* Toggle switch */
.settings-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 0; border-top: 1px solid var(--panel-border);
}
.settings-label { font-size: 14px; color: var(--page-text); font-weight: 600; }
#settings-hint-mode {
  padding: 4px 8px; font-size: 13px;
  border: 1px solid var(--panel-border); border-radius: 6px;
  background: var(--panel-bg); color: var(--page-text);
}
.toggle-switch { position: relative; display: inline-block; }
.toggle-switch input { display: none; }
.toggle-track {
  display: flex; align-items: center;
  width: 56px; height: 28px; border-radius: 14px;
  background: var(--node-missed-fill); cursor: pointer;
  position: relative; transition: background 0.2s;
  border: 2px solid var(--node-missed-stroke);
}
.toggle-switch input:checked + .toggle-track {
  background: var(--node-found-fill);
  border-color: var(--node-found-stroke);
}
.toggle-track::after {
  content: ''; position: absolute;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--panel-bg); top: 1px; left: 1px;
  transition: transform 0.2s;
  border: 2px solid var(--node-missed-stroke);
}
.toggle-switch input:checked + .toggle-track::after {
  transform: translateX(28px);
  border-color: var(--node-found-stroke);
}
.toggle-text-on, .toggle-text-off {
  font-size: 9px; font-weight: 700;
  position: absolute; top: 50%; transform: translateY(-50%);
}
.toggle-text-on { left: 7px; opacity: 0; color: var(--letter-found-color, white); }
.toggle-text-off { right: 6px; color: var(--letter-missed-color, white); }
.toggle-switch input:checked + .toggle-track .toggle-text-on { opacity: 1; }
.toggle-switch input:checked + .toggle-track .toggle-text-off { opacity: 0; }

@media (max-width: 500px) {
  #settings-panel {
    top: auto; bottom: 0; right: 0; left: 0;
    width: 100%; height: auto; max-height: 85vh;
    border-left: none; border-top: 1px solid var(--panel-border);
    transform: translateY(100%);
    padding: 16px;
  }
  #settings-panel.open { transform: translateY(0); }
}

@media (max-width: 500px) {
  header { padding: 10px 16px; }
  #game-container { padding: 0 12px; }
  #tree-container { margin-bottom: 10px; min-height: 0; }
  #legend { margin-bottom: 8px; gap: 10px; font-size: 12px; }
  #status { margin-bottom: 6px; }
  #guess-history { margin-bottom: 10px; min-height: 24px; }
  #onscreen-keyboard { margin-bottom: 8px; }
  .kb-key { padding: 8px 0; }
  footer { padding: 8px; }
  #win-banner { margin-bottom: 10px; padding: 14px; }
  #stats-panel { margin-bottom: 10px; padding: 12px 14px; }
}

/* Starter puzzles */
#starter-link {
  font-size: 13px;
  color: var(--subtle-text);
  cursor: pointer;
  text-decoration: none;
  display: flex;
  align-items: center;
  padding: 0 4px;
}
#starter-link:hover { color: var(--page-text); }
#starter-nudge { margin: 12px 0; text-align: center; }
#starter-nudge button {
  padding: 8px 20px;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  background: var(--panel-bg);
  color: var(--page-text);
  cursor: pointer;
  font-size: 14px;
  transition: background 0.15s;
}
#starter-nudge button:hover { opacity: 0.85; }
.starter-nudge-sub { font-size: 12px; color: var(--subtle-text); margin-top: 4px; }
.starter-nudge-sub a { color: var(--subtle-text); text-decoration: underline; }
.starter-nudge-sub a:hover { color: var(--page-text); }

footer {
  padding: 20px;
  font-size: 12px;
  color: var(--subtle-text);
}