:root {
  --bg: #0f1620;
  --panel: #1a2533;
  --panel-light: #233044;
  --accent: #4fd1c5;
  --accent-dark: #2ca39a;
  --text: #eef3f8;
  --text-dim: #9fb0c2;
  --correct: #4ade80;
  --incorrect: #f87171;
  --land: #3a4a5e;
  --land-stroke: #1a2533;
  --ocean: #101820;
  --you: #c084fc;
  --real: #facc15;
  --tint-a: #56708f;
  --tint-b: #3a4a5e;

  --diff-1: #4ade80;
  --diff-2: #facc15;
  --diff-3: #fb923c;
  --diff-4: #f87171;
}


* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  height: 100%;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
}

#app {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
  min-height: 100vh;
}

.screen { display: none; }
.screen.active { display: block; }
.hidden { display: none !important; }

h1 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 4px;
  letter-spacing: 1px;
}

.subtitle {
  text-align: center;
  color: var(--text-dim);
  margin-top: 0;
  margin-bottom: 28px;
}

/* ---- Setup ---- */
.setup-group { margin-bottom: 24px; }

.setup-group h2 {
  font-size: 1.05rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
  font-weight: 600;
}

.setup-group h2 .hint {
  text-transform: none;
  letter-spacing: normal;
  font-weight: 400;
  font-size: 0.85rem;
  opacity: 0.8;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.option-btn {
  background: var(--panel);
  border: 2px solid transparent;
  border-radius: 10px;
  padding: 14px 16px;
  text-align: left;
  cursor: pointer;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
}

.option-btn:hover { background: var(--panel-light); transform: translateY(-1px); }
.option-btn.selected { border-color: var(--accent); background: var(--panel-light); }

#difficulty-options .option-btn[data-difficulty="1"] { border-color: color-mix(in srgb, var(--diff-1) 35%, transparent); }
#difficulty-options .option-btn[data-difficulty="2"] { border-color: color-mix(in srgb, var(--diff-2) 35%, transparent); }
#difficulty-options .option-btn[data-difficulty="3"] { border-color: color-mix(in srgb, var(--diff-3) 35%, transparent); }
#difficulty-options .option-btn[data-difficulty="4"] { border-color: color-mix(in srgb, var(--diff-4) 35%, transparent); }
#difficulty-options .option-btn[data-difficulty="1"].selected { border-color: var(--diff-1); box-shadow: 0 0 0 1px var(--diff-1) inset; }
#difficulty-options .option-btn[data-difficulty="2"].selected { border-color: var(--diff-2); box-shadow: 0 0 0 1px var(--diff-2) inset; }
#difficulty-options .option-btn[data-difficulty="3"].selected { border-color: var(--diff-3); box-shadow: 0 0 0 1px var(--diff-3) inset; }
#difficulty-options .option-btn[data-difficulty="4"].selected { border-color: var(--diff-4); box-shadow: 0 0 0 1px var(--diff-4) inset; }

.opt-title { font-weight: 700; font-size: 1.05rem; }
.opt-desc { font-size: 0.82rem; color: var(--text-dim); }

.primary-btn {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #06231f;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}
.primary-btn:hover:not(:disabled) { background: var(--accent-dark); }
.primary-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.back-link { text-align: center; margin-top: 16px; font-size: 0.9rem; }
.back-link a { color: var(--text-dim); text-decoration: none; }
.back-link a:hover { color: var(--accent); }

.how-to {
  border: 1px solid var(--panel-light);
  border-radius: 8px;
  margin: 20px auto 0;
  background: var(--panel);
  max-width: 520px;
  width: 100%;
  text-align: left;
}

.how-to-summary {
  display: block;
  padding: 10px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.how-to-summary::-webkit-details-marker { display: none; }
.how-to-summary::before {
  content: "\25B8";
  display: inline-block;
  margin-right: 8px;
  transition: transform 0.2s;
}
details.how-to[open] > .how-to-summary::before { transform: rotate(90deg); }
.how-to-summary:hover { color: var(--text); }

.how-to-body { padding: 0 16px 12px; }
.how-to-body p {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.55;
  margin: 0 0 10px;
}
.how-to-body p:last-child { margin-bottom: 0; }
.how-to-body strong { color: var(--text); }

.text-btn {
  background: none; border: none;
  color: var(--text-dim); cursor: pointer;
  font-size: 0.95rem; text-decoration: underline;
}
.text-btn:hover { color: var(--text); }

/* ---- Game header ---- */
.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.hud {
  display: flex;
  gap: 18px;
  font-weight: 600;
  color: var(--text-dim);
}

#score-counter { color: var(--accent); }

.prompt {
  text-align: center;
  margin-bottom: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.prompt-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.prompt-text { font-size: 1.15rem; font-weight: 700; }
.multi-note {
  margin-top: 4px; max-width: 560px;
  font-size: 0.85rem; color: var(--accent);
}


/* ---- Map ---- */
.map-wrap {
  position: relative;
  width: 100%;
  max-width: calc((100vh - 230px) * 1.5);
  min-width: 300px;
  aspect-ratio: 3 / 2;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  background: var(--ocean);
  box-shadow: 0 0 0 2px var(--panel-light), 0 10px 40px rgba(0, 0, 0, 0.5);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  cursor: crosshair;
}
.map-wrap.pan-ready { cursor: grab; }
.map-wrap.panning { cursor: grabbing; }

.zoom-btns {
  position: absolute; top: 10px; right: 10px;
  display: flex; flex-direction: column; gap: 6px;
}
.zoom-btns button {
  width: 34px; height: 34px;
  border-radius: 8px;
  border: 1px solid var(--panel-light);
  background: rgba(26, 37, 51, 0.9);
  color: var(--text);
  font-size: 1.15rem; line-height: 1;
  cursor: pointer;
}
.zoom-btns button:hover:not(:disabled) { border-color: var(--accent); }
.zoom-btns button:disabled { opacity: 0.4; cursor: default; }
.zoom-btns #pan-toggle { font-size: 1rem; }
.zoom-btns #pan-toggle.active { background: var(--accent); border-color: var(--accent); color: #06231f; }

#map-svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

.sea { fill: var(--ocean); }
.blob { fill: var(--land); stroke: #8aa0b8; stroke-width: 1.4; stroke-linejoin: round; vector-effect: non-scaling-stroke; fill-rule: evenodd; }
.tint-a { fill: var(--tint-a); stroke: none; fill-rule: evenodd; }
.map-wrap:not(.revealed) .tint-a, .map-wrap:not(.revealed) .holes { display: none; }
.given-line polyline {
  fill: none; stroke: #e2e8f0; stroke-width: 2.4; stroke-dasharray: 7 5; stroke-linecap: round;
  vector-effect: non-scaling-stroke; pointer-events: none;
}

.holes { fill: var(--ocean); stroke: #8aa0b8; stroke-width: 1; vector-effect: non-scaling-stroke; }
.map-wrap.revealed .blob { fill: var(--tint-b); }

.real-line polyline {
  fill: none; stroke: var(--real); stroke-width: 3.2;
  stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke;
  filter: drop-shadow(0 0 2px rgba(0, 0, 0, 0.8));
}
.user-line {
  fill: none; stroke: var(--you); stroke-width: 3;
  stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke;
  filter: drop-shadow(0 0 2px rgba(0, 0, 0, 0.7));
}
.map-wrap.revealed .user-line { stroke-dasharray: 7 5; }

.labels text {
  fill: var(--text);
  font-weight: 700;
  letter-spacing: 0.5px;
  text-anchor: middle;
  dominant-baseline: central;
  paint-order: stroke;
  stroke: rgba(10, 16, 24, 0.85);
  stroke-linejoin: round;
  pointer-events: none;
}

.draw-hint {
  position: absolute; left: 50%; top: 12px; transform: translateX(-50%);
  padding: 5px 12px; border-radius: 999px;
  background: rgba(26, 37, 51, 0.88); border: 1px solid var(--panel-light);
  color: var(--text-dim); font-size: 0.82rem; pointer-events: none;
  white-space: nowrap; max-width: calc(100% - 70px); overflow: hidden; text-overflow: ellipsis;
}
@media (hover: none) { .draw-hint { font-size: 0; } .draw-hint::after { content: "Drag to draw \00b7  two fingers to zoom and pan"; font-size: 0.78rem; } }

.scale-bar {
  position: absolute; left: 12px; bottom: 10px;
  display: flex; flex-direction: column; gap: 3px;
  font-size: 0.75rem; color: var(--text-dim);
  pointer-events: none;
}
.scale-line { height: 6px; border: 2px solid var(--text-dim); border-top: none; }

/* ---- Controls ---- */
.controls {
  display: flex;
  gap: 10px;
  max-width: 640px;
  margin: 14px auto 0;
}
.controls .primary-btn { margin-top: 0; flex: 1; }
.ghost-btn {
  background: var(--panel);
  border: 1px solid var(--panel-light);
  border-radius: 10px;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0 22px;
  font-size: 1rem;
  white-space: nowrap;
}
.ghost-btn:hover:not(:disabled) { color: var(--text); border-color: var(--incorrect); }
.ghost-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---- Result ---- */
.result-detail {
  max-width: 640px;
  margin: 6px auto 0;
  background: var(--panel);
  border-radius: 10px;
  padding: 14px 16px;
}
.result-headline { font-size: 1.25rem; font-weight: 800; margin-bottom: 6px; }
.result-headline.great { color: var(--correct); }
.result-headline.good  { color: #facc15; }
.result-headline.okay  { color: #fb923c; }
.result-headline.miss  { color: var(--incorrect); }

.result-facts {
  padding: 0; margin: 0 0 8px;
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.7;
}
.result-facts strong { color: var(--text); }

/* ---- Results screen ---- */
.final-score {
  text-align: center;
  font-size: 2rem;
  color: var(--accent);
  font-weight: 800;
  margin-bottom: 4px;
}
.final-avg { text-align: center; color: var(--text-dim); margin-top: 0; margin-bottom: 20px; }

.results-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 auto 20px;
  max-width: 640px;
}
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  background: var(--panel);
  border-radius: 8px;
  padding: 10px 14px;
}
.result-row .name-col { font-weight: 600; }
.result-row .diff-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}
.result-row .dist-col { color: var(--text-dim); font-size: 0.88rem; margin-left: auto; text-align: right; }
.result-row .pts-col  { color: var(--accent); font-weight: 700; min-width: 56px; text-align: right; }

.results-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  max-width: 640px;
  margin: 0 auto;
}

.result-facts .dim { font-size: 0.85rem; }
.legend { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-dim); margin-bottom: 4px; }
.legend .sw { display: inline-block; width: 22px; height: 0; border-top: 3px solid; margin-left: 6px; }
.legend .sw:first-child { margin-left: 0; }
.sw-you { border-color: var(--you) !important; border-top-style: dashed !important; }
.sw-real { border-color: var(--real) !important; }

@media (max-width: 600px) {
  #app { padding: 16px; }
  h1 { font-size: 1.7rem; }
  .options-grid { grid-template-columns: 1fr; }
  .map-wrap { min-width: 0; }
  .ghost-btn { padding: 12px 16px; }
  .result-row { flex-wrap: wrap; }
}