:root {
  --bg: #f5efe3;
  --card: #fffaf0;
  --ink: #1d1b16;
  --muted: #6f685b;
  --faint: #e4dccb;
  --grid: #ebe3d3;
  --accent: #d24b2a;          /* the curve: printer's vermilion */
  --accent-soft: rgba(210, 75, 42, .16);
  --guess: #1d1b16;
  --shadow: 0 1px 0 rgba(29, 27, 22, .06), 0 8px 24px -12px rgba(29, 27, 22, .25);
  --b0: #3c8a52;  /* spot on */
  --b1: #c99a06;  /* close   */
  --b2: #de7a25;  /* near    */
  --b3: #c33f2d;  /* far     */
  --b4: #9d978b;  /* way off */
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #16140f; --card: #1f1c16; --ink: #efe7d6; --muted: #a39b8b; --faint: #39342a;
    --grid: #2c2820; --accent: #f06a45; --accent-soft: rgba(240, 106, 69, .2); --guess: #efe7d6;
    --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 10px 30px -14px rgba(0, 0, 0, .8);
    --b0: #57b56f; --b1: #e3b51f; --b2: #f08f3c; --b3: #e2584a; --b4: #7f796e;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #16140f; --card: #1f1c16; --ink: #efe7d6; --muted: #a39b8b; --faint: #39342a;
  --grid: #2c2820; --accent: #f06a45; --accent-soft: rgba(240, 106, 69, .2); --guess: #efe7d6;
  --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 10px 30px -14px rgba(0, 0, 0, .8);
  --b0: #57b56f; --b1: #e3b51f; --b2: #f08f3c; --b3: #e2584a; --b4: #7f796e;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; min-height: 100dvh;
  background: var(--bg); color: var(--ink);
  font: 16px/1.45 var(--sans);
  display: flex; flex-direction: column; align-items: center;
  padding: 0 16px env(safe-area-inset-bottom);
}
button { font: inherit; color: inherit; }
a { color: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

/* Header */
.top {
  width: 100%; max-width: 520px; display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0 10px; border-bottom: 1px solid var(--faint);
}
.top h1 { margin: 0; font: 700 30px/1 var(--serif); letter-spacing: -.01em; }
.icon {
  width: 44px; height: 44px; display: grid; place-items: center;
  background: none; border: 0; border-radius: 50%; cursor: pointer;
}
.icon:hover { background: var(--faint); }
.icon svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.icon svg .fill { fill: currentColor; stroke: none; }

main { width: 100%; max-width: 520px; flex: 1; padding: 12px 0 24px; }

/* Meta row */
.meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 4px 2px 12px; font-size: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }
#runningScore { min-width: 4.5em; text-align: right; }
.dots { display: flex; gap: 8px; list-style: none; margin: 0; padding: 0; }
.dot {
  width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--faint);
  display: grid; place-items: center; font-size: 0; transition: transform .3s, background .3s, border-color .3s;
}
.dot.current { border-color: var(--ink); transform: scale(1.15); }
.dot[data-band] { border-color: transparent; }
.dot[data-band="0"] { background: var(--b0); } .dot[data-band="1"] { background: var(--b1); }
.dot[data-band="2"] { background: var(--b2); } .dot[data-band="3"] { background: var(--b3); }
.dot[data-band="4"] { background: var(--b4); }
.dot.pop { animation: pop .45s cubic-bezier(.3, 1.6, .5, 1); }

/* Card */
.card { background: var(--card); border-radius: 18px; box-shadow: var(--shadow); padding: 18px 18px 20px; }
.round { margin: 0; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.word {
  margin: 6px 0 2px; font: 700 clamp(38px, 11vw, 54px)/1.05 var(--serif); letter-spacing: -.015em;
  overflow-wrap: anywhere;
}
.word.enter { animation: rise .5s cubic-bezier(.2, .8, .2, 1); }
.prompt { margin: 0 0 10px; color: var(--muted); }

/* Chart */
.chart { position: relative; margin: 0 -6px; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.grid line { stroke: var(--grid); stroke-width: 1; }
.axis text { fill: var(--muted); font: 500 11px var(--sans); }
.baseline { stroke: var(--faint); stroke-width: 1.5; }
.curve { fill: none; stroke: var(--accent); stroke-width: 2.4; stroke-linejoin: round; stroke-linecap: round; }
.area { opacity: 0; }
.guess-line { stroke: var(--guess); stroke-width: 1.6; stroke-dasharray: 3 3; }
.guess-pill rect { fill: var(--guess); }
.guess-pill text { fill: var(--card); font: 700 12px var(--sans); }
.peak-line { stroke: var(--accent); stroke-width: 1.2; stroke-dasharray: 1 3; opacity: 0; }
.peak-dot { fill: var(--accent); stroke: var(--card); stroke-width: 2.5; opacity: 0; transform-box: fill-box; transform-origin: center; }
.peak-label { fill: var(--accent); font: 700 13px var(--sans); opacity: 0; }
.gap-line { stroke-width: 3; stroke-linecap: round; opacity: 0; }
.chart.revealed .area { opacity: 1; transition: opacity .6s .55s; }
.chart.revealed .peak-line, .chart.revealed .peak-label, .chart.revealed .gap-line { opacity: 1; transition: opacity .3s .9s; }
.chart.revealed .peak-dot { opacity: 1; animation: drop .5s .85s cubic-bezier(.3, 1.5, .5, 1) backwards; }

/* Controls */
.controls { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; margin-top: 12px; }
.year-row { display: flex; align-items: center; justify-content: center; gap: 6px; min-width: 0; }
.step {
  flex: 0 0 auto; min-width: 44px; height: 44px; padding: 0 6px; border-radius: 12px; border: 1.5px solid var(--faint);
  background: transparent; font-weight: 600; font-variant-numeric: tabular-nums; cursor: pointer; touch-action: manipulation;
}
.step:hover { border-color: var(--muted); }
.step:active { transform: scale(.95); }
.year-input {
  width: 2.7em; min-width: 0; text-align: center; font: 700 36px/1.1 var(--serif); font-variant-numeric: tabular-nums;
  color: var(--ink); background: transparent; border: 0; border-bottom: 2px solid var(--faint); padding: 2px 0; margin: 0 2px;
}
.year-input:focus { outline: none; border-bottom-color: var(--accent); }
.slider { -webkit-appearance: none; appearance: none; width: 100%; height: 44px; background: transparent; cursor: pointer; margin: 0; }
.slider::-webkit-slider-runnable-track { height: 6px; border-radius: 3px; background: var(--faint); }
.slider::-moz-range-track { height: 6px; border-radius: 3px; background: var(--faint); }
.slider::-webkit-slider-thumb {
  -webkit-appearance: none; width: 28px; height: 28px; margin-top: -11px; border-radius: 50%;
  background: var(--ink); border: 4px solid var(--card); box-shadow: 0 1px 4px rgba(0, 0, 0, .3);
}
.slider::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: var(--ink); border: 4px solid var(--card); }
.primary {
  height: 52px; border: 0; border-radius: 14px; background: var(--ink); color: var(--card);
  font-weight: 700; font-size: 17px; letter-spacing: .01em; cursor: pointer; touch-action: manipulation;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; width: 100%;
  transition: transform .1s;
}
.primary:active { transform: scale(.98); }
.primary:disabled { opacity: .5; cursor: default; }
.primary svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }

/* Result */
.result { margin-top: 14px; animation: rise .45s cubic-bezier(.2, .8, .2, 1); }
.result-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 8px; border-radius: 999px;
  font-weight: 700; font-size: 14px; letter-spacing: .06em; color: #fff;
}
.badge .glyph { font-size: 16px; line-height: 1; }
.badge[data-band="0"] { background: var(--b0); } .badge[data-band="1"] { background: var(--b1); color: #1d1b16; }
.badge[data-band="2"] { background: var(--b2); color: #1d1b16; } .badge[data-band="3"] { background: var(--b3); }
.badge[data-band="4"] { background: var(--b4); color: #1d1b16; }
.points { font: 700 40px/1 var(--serif); font-variant-numeric: tabular-nums; }
.points small { font: 600 15px var(--sans); color: var(--muted); }
.definition { margin: 12px 0 0; padding: 10px 12px; border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 10px 10px 0; font: 500 16px/1.4 var(--serif); }
.pos { font: italic 600 13px var(--serif); color: var(--muted); margin-right: 4px; }
.result-text { margin: 10px 0 4px; font-size: 17px; }
.context { margin: 0 0 14px; color: var(--muted); font-size: 14.5px; }
.context em { color: var(--ink); font-style: normal; font-weight: 600; }

/* Summary */
.summary { text-align: center; animation: rise .5s cubic-bezier(.2, .8, .2, 1); }
.sum-title { margin: 0; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.total { margin: 6px 0 0; font: 700 64px/1 var(--serif); font-variant-numeric: tabular-nums; }
.total small { font-size: 24px; color: var(--muted); }
.sum-emoji { font-size: 26px; letter-spacing: 4px; margin: 8px 0 14px; }
.sum-list { list-style: none; padding: 0; margin: 0 0 18px; text-align: left; display: grid; gap: 4px; }
.sum-item {
  display: grid; grid-template-columns: 1fr auto; grid-template-areas: "w p" "s s" "d d" "f f";
  padding: 10px 2px; border-top: 1px solid var(--faint); column-gap: 10px;
}
.sum-item .w { grid-area: w; font: 700 20px var(--serif); }
.sum-item .p { grid-area: p; font-weight: 700; font-variant-numeric: tabular-nums; align-self: center; }
.sum-item .s { grid-area: s; margin: 4px 0; }
.sum-item .s svg { width: 100%; height: 40px; display: block; overflow: visible; }
.sum-item .def { grid-area: f; margin-top: 4px; font: 15px/1.35 var(--serif); }
.sum-item .d { grid-area: d; font-size: 13.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.mini .curve { stroke-width: 1.8; }
.mini .area { opacity: 1; }
.share { margin-bottom: 12px; }
.next-in { margin: 0; color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }

/* Footer */
.foot { width: 100%; max-width: 520px; padding: 14px 2px 22px; font-size: 12.5px; color: var(--muted); border-top: 1px solid var(--faint); }

/* Dialogs */
dialog {
  width: min(480px, calc(100vw - 32px)); max-height: calc(100dvh - 48px); border: 0; padding: 0;
  border-radius: 20px; background: var(--card); color: var(--ink); box-shadow: 0 20px 60px -20px rgba(0, 0, 0, .5);
}
dialog[open] { animation: rise .3s cubic-bezier(.2, .8, .2, 1); }
dialog::backdrop { background: rgba(20, 18, 14, .5); backdrop-filter: blur(2px); }
.dlg { padding: 22px 20px 20px; position: relative; }
.dlg h2 { margin: 0 0 12px; font: 700 26px var(--serif); }
.dlg h3 { margin: 18px 0 10px; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.dlg p { margin: 0 0 12px; }
.dlg .fine { font-size: 14px; color: var(--muted); }
.close { position: absolute; top: 10px; right: 10px; }
.help-chart { margin: 4px -4px 12px; }
.bands { list-style: none; padding: 0; margin: 0 0 14px; display: grid; gap: 6px; }
.bands li { display: flex; align-items: center; gap: 12px; font-size: 14.5px; line-height: 1.3; }
.bands .badge { min-width: 118px; flex: 0 0 auto; }
.bands small { color: var(--muted); font-size: 13px; }
.stat-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 4px; margin: 0; text-align: center; }
.stat-row div { display: flex; flex-direction: column; justify-content: flex-start; }
.stat-row dd { order: -1; }
.stat-row dd { margin: 0; font: 700 28px var(--serif); font-variant-numeric: tabular-nums; }
.stat-row dt { font-size: 12px; color: var(--muted); line-height: 1.2; }
.dist { display: grid; gap: 6px; }
.dist-row { display: grid; grid-template-columns: 64px 1fr; align-items: center; gap: 8px; font-size: 13px; font-variant-numeric: tabular-nums; }
.dist-bar {
  background: var(--faint); color: var(--ink); border-radius: 4px; padding: 2px 8px; text-align: right; font-weight: 700;
  min-width: 26px; width: 0; transition: width .6s cubic-bezier(.2, .8, .2, 1);
}
.dist-bar.today { background: var(--accent); color: #fff; }

/* Toast */
.toast {
  position: fixed; left: 50%; top: 18px; transform: translate(-50%, -20px); opacity: 0; pointer-events: none;
  background: var(--ink); color: var(--card); padding: 10px 16px; border-radius: 10px; font-weight: 600; font-size: 15px;
  transition: opacity .2s, transform .2s; z-index: 10;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes pop { 50% { transform: scale(1.5); } }
@keyframes drop { from { opacity: 0; transform: translateY(-14px) scale(.4); } }
@keyframes shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
.shake { animation: shake .35s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-delay: 0s !important; transition-duration: .01ms !important; transition-delay: 0s !important; }
}
@media (min-width: 480px) {
  .card { padding: 22px 24px 24px; }
}