/* Layout: one column — setup strip, method explainer, 16:9 firing range, then the blended verdict beside one card per drill, then export. Single dark look on purpose (it's a game tool). */
:root {
  color-scheme: dark;
  --bg: #0e1316;
  --panel: #151c20;
  --panel-2: #1b2429;
  --line: #2a363c;
  --fg: #e4ebe7;
  --muted: #8d9a9e;
  --accent: #f0a63a;      /* range-marker amber */
  --accent-ink: #1a1206;
  --over: #ec6a52;        /* past the target / warnings */
  --under: #5aa7e3;       /* short of the target */
  --good: #7fc792;        /* on target */
  --font-display: "Chakra Petch", "Segoe UI", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --font-data: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}
html, body { background: var(--bg); color: var(--fg); }
body { font-family: var(--font-body); font-size: 15px; line-height: 1.5; }
a { color: var(--accent); }
.wrap {
  max-width: 1440px; margin: 0 auto;
  padding-block: 16px 56px;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  display: grid; gap: 14px;
}
header { display: grid; gap: 6px; }
.eyebrow { font-family: var(--font-data); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
h1 { font-family: var(--font-display); font-weight: 700; font-size: clamp(28px, 4.4vw, 40px); line-height: 1.05; margin: 0; letter-spacing: .01em; text-wrap: balance; }
h2 { font: 600 18px var(--font-display); letter-spacing: .03em; margin: 0; }
.lede { color: var(--muted); max-width: 70ch; margin: 0; }

/* Every field is the same three rows (label / 38px control / hint), so controls line up whether or not a hint exists. */
.setup { display: grid; gap: 10px; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 14px 16px; }
.setup-row, details.adv .adv-row { display: flex; flex-wrap: wrap; gap: 12px 18px; align-items: flex-start; }
.field { display: grid; grid-template-rows: 16px 38px 16px; gap: 4px; min-width: 0; }
.field label, .field .label { font-size: 12px; line-height: 16px; color: var(--muted); letter-spacing: .04em; text-transform: uppercase; font-family: var(--font-data); white-space: nowrap; }
.field input[type="number"], .field select { box-sizing: border-box; height: 38px; font: 500 16px var(--font-data); color: var(--fg); background: var(--panel-2); border: 1px solid var(--line); border-radius: 4px; padding: 0 9px; font-variant-numeric: tabular-nums; }
.field input[type="number"] { width: 96px; }
.field input:disabled { color: var(--muted); }
.field label.toggle { box-sizing: border-box; height: 38px; display: flex; align-items: center; gap: 8px; padding: 0 12px; border: 1px solid var(--line); border-radius: 4px; background: var(--panel-2); cursor: pointer; font: 600 13px var(--font-body); color: var(--fg); text-transform: none; letter-spacing: 0; }
.field label.toggle input { width: 16px; height: 16px; margin: 0; accent-color: var(--accent); }
.field label.toggle:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.field select { font-family: var(--font-body); font-size: 14px; font-weight: 600; }
/* Compact page top: title line, one control bar, then the range — Settings unfolds below the bar. */
header.top { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 16px; }
header.top h1 { font-size: clamp(22px, 2.6vw, 30px); }
.setup .bar-actions { align-self: flex-start; margin-top: 20px; margin-left: auto; }
#start { min-width: 132px; }               /* fits "Start practice" so the bar doesn't shift when the label changes */
#settings-toggle[aria-expanded="true"] { border-color: var(--accent); color: var(--accent); }
.settings { display: grid; gap: 14px; border-top: 1px solid var(--line); padding-top: 14px; }
.about { display: grid; gap: 6px; }
/* Sidebar (overall sens + export) sits beside the range and stays in view; one column on narrow screens, range first. */
.layout { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: 16px; align-items: start; }
.sidebar { position: sticky; top: max(12px, env(safe-area-inset-top, 0px)); display: grid; gap: 14px; align-content: start; max-height: calc(100vh - 24px); overflow-y: auto; min-width: 0; }
.main { display: grid; gap: 14px; align-content: start; min-width: 0; }
.main .arena-wrap { margin: 0; }
.sidebar .data { padding: 14px; gap: 10px; }
.sidebar .data h2 { font-size: 16px; }
.sidebar .data textarea { min-height: 180px; }
/* In the narrow sidebar, headings and notes sit above full-width button pairs instead of wrapping right-aligned. */
.sidebar .data-head { display: grid; gap: 10px; }
.sidebar .data .actions { margin-left: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.sidebar .data .actions button { width: 100%; padding-inline: 8px; }
.sidebar .data .note { margin: 0; font: 12px/1.45 var(--font-data); color: var(--muted); }
.check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--fg); cursor: pointer; }
.check input { width: 16px; height: 16px; margin: 0; accent-color: var(--accent); }
.rec-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--over); flex: none; }
.rec-dot { display: inline-block; vertical-align: middle; background: var(--muted); }
.rec-dot.on { background: var(--over); animation: recpulse 1s steps(2) infinite; }
.rec-dot.paused { background: var(--accent); }
#rec-dl { width: 100%; }
@keyframes recpulse { 50% { opacity: .3; } }
@media (prefers-reduced-motion: reduce) { .rec-dot.on { animation: none; } }
button:disabled { opacity: .45; cursor: not-allowed; filter: none; }
@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: static; max-height: none; order: 2; }
}
.field input:focus-visible, .field select:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.field .hint { font: 12px/16px var(--font-data); color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.seg { box-sizing: border-box; height: 38px; display: flex; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; background: var(--panel-2); }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label { display: flex; align-items: center; font: 600 13px var(--font-body); letter-spacing: 0; text-transform: none; color: var(--muted); padding: 0 12px; cursor: pointer; border-right: 1px solid var(--line); white-space: nowrap; }
.seg label:last-of-type { border-right: 0; }
.seg input:checked + label { background: var(--accent); color: var(--accent-ink); }
.seg input:disabled + label { opacity: .4; cursor: not-allowed; }
.seg input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: -2px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-left: auto; }
button { font: 600 14px var(--font-body); border-radius: 4px; padding: 9px 14px; cursor: pointer; border: 1px solid var(--line); background: var(--panel-2); color: var(--fg); }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button:hover { filter: brightness(1.08); }
details.adv summary { cursor: pointer; font: 12px var(--font-data); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
details.adv .adv-row { padding-top: 12px; }
.status { display: flex; flex-wrap: wrap; gap: 8px 16px; font: 12px var(--font-data); color: var(--muted); min-width: 0; }
.chip { display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); flex: none; }
.dot.ok { background: var(--good); } .dot.warn { background: var(--over); }

.method-info { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 18px; }
@media (max-width: 820px) { .method-info { grid-template-columns: minmax(0, 1fr); } }
.method-info > div { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 16px; display: grid; gap: 8px; align-content: start; min-width: 0; }
.method-info h3 { font: 600 16px var(--font-display); letter-spacing: .03em; margin: 0; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.method-info p { margin: 0; font-size: 14px; color: var(--muted); }
.method-info p b { color: var(--fg); font-weight: 600; }
.method-info dl { margin: 0; display: grid; gap: 6px; font-size: 14px; }
.method-info dt { font: 11px var(--font-data); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.method-info dd { margin: 0; }
.method-info ul { margin: 0; padding-left: 18px; }
.method-info .warn { color: var(--over); }
.badge { font: 500 10px var(--font-data); letter-spacing: .08em; text-transform: uppercase; padding: 2px 6px; border-radius: 3px; border: 1px solid var(--good); color: var(--good); }
.badge.legacy { border-color: var(--over); color: var(--over); }
.badge.alt { border-color: var(--under); color: var(--under); }
.range-bar { position: relative; height: 10px; border-radius: 5px; background: var(--panel-2); border: 1px solid var(--line); margin: 6px 0 2px; }
.range-bar .ok { position: absolute; top: 0; bottom: 0; background: color-mix(in srgb, var(--good) 35%, transparent); }
.range-bar .you { position: absolute; top: -4px; width: 3px; height: 16px; background: var(--accent); }
.range-scale { display: flex; justify-content: space-between; font: 11px var(--font-data); color: var(--muted); }

.arena-wrap { position: relative; width: 100%; max-width: max(480px, calc((100vh - 230px) * 16 / 9)); margin: 0 auto; aspect-ratio: 16 / 9; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: #0a0f12; }
canvas { display: block; width: 100%; height: 100%; cursor: crosshair; }
.arena-wrap:fullscreen { max-width: none; width: 100%; height: 100%; aspect-ratio: auto; border: 0; border-radius: 0; }
.overlay { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 24px; background: rgba(8, 12, 14, .72); cursor: pointer; }
.overlay .box { display: grid; gap: 8px; max-width: 50ch; }
.overlay strong { font-family: var(--font-display); font-size: 22px; font-weight: 600; }
.overlay span { color: var(--muted); }
.touch-note { display: none; color: var(--over); font-size: 13px; }
@media (pointer: coarse) { .touch-note { display: block; } }

.results { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: 18px; align-items: start; }
@media (max-width: 760px) { .results { grid-template-columns: minmax(0, 1fr); } }
.verdict { background: var(--panel); border: 1px solid var(--accent); border-radius: 6px; padding: 18px; display: grid; gap: 10px; }
.tag { justify-self: start; font: 500 11px var(--font-data); letter-spacing: .08em; text-transform: uppercase; padding: 3px 7px; border-radius: 3px; background: var(--panel-2); color: var(--muted); border: 1px solid var(--line); }
.tag.live { color: var(--accent); border-color: var(--accent); }
.big { font: 700 56px/1 var(--font-display); color: var(--accent); font-variant-numeric: tabular-nums; }
.big-sub { font: 14px var(--font-data); color: var(--muted); font-variant-numeric: tabular-nums; }
.verdict p { margin: 0; color: var(--muted); font-size: 14px; }
.verdict p b { color: var(--fg); font-weight: 600; }
.verdict .warn { color: var(--over); }
.parts { list-style: none; margin: 0; padding: 10px 0 0; border-top: 1px solid var(--line); display: grid; gap: 6px; font: 13px var(--font-data); font-variant-numeric: tabular-nums; }
.parts li { display: grid; grid-template-columns: 1fr auto auto; gap: 12px; }
.parts .w, .parts .off { color: var(--muted); }
.cards { display: grid; gap: 14px; min-width: 0; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 14px; display: grid; gap: 6px; min-width: 0; }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.card h3 { font: 600 16px var(--font-display); letter-spacing: .03em; margin: 0; }
.card .val { font: 700 24px var(--font-display); color: var(--fg); font-variant-numeric: tabular-nums; }
.card .val.none { color: var(--muted); font-size: 16px; font-weight: 500; }
.card .sub { font: 12px var(--font-data); color: var(--muted); }
.card .sub.warn { color: var(--over); }
.chart { overflow-x: auto; }
.chart svg { display: block; width: 100%; min-width: 420px; height: auto; }

.data { display: grid; gap: 12px; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 16px; }
.data-head { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; justify-content: space-between; }
.data p { margin: 0; color: var(--muted); font-size: 14px; max-width: 75ch; }
.data textarea { width: 100%; min-height: 280px; resize: vertical; font: 12px/1.45 var(--font-data); color: var(--fg); background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 10px; }
.data .note { font: 12px var(--font-data); color: var(--muted); }
.data #notes, .sidebar .data #notes { min-height: 64px; }

.how { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; }
.how div { border-top: 2px solid var(--line); padding-top: 10px; }
.how h3 { font: 600 14px var(--font-display); letter-spacing: .03em; margin: 0 0 4px; }
.how p { margin: 0; color: var(--muted); font-size: 14px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }