:root {
  --navy: #1a3a5c; --navy2: #2c5a87; --accent: #1e88e5;
  --sq: #e15b5b; --lp: #2faa6a; --pi: #9b59b6; --eng: #e0913a;
  --bg: #f4f6f9; --card: #fff; --ink: #1f2a36; --muted: #6b7a8a; --line: #e3e9ef;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Apple SD Gothic Neo", Pretendard, "Noto Sans KR", system-ui, sans-serif; line-height: 1.5; }

header { background: linear-gradient(135deg, var(--navy), var(--navy2)); color: #fff; padding: 18px 24px; }
.head-row { max-width: 1100px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
header h1 { margin: 0; font-size: 1.4rem; font-weight: 700; }
header .accent { color: #7fd1ff; }
header .sub { margin: 5px 0 0; font-size: .86rem; opacity: .92; }
.badge { background: rgba(255,255,255,.18); border-radius: 6px; padding: 1px 8px; font-size: .78rem; }
.lang-btn { flex: none; background: rgba(255,255,255,.16); color: #fff; border: 1px solid rgba(255,255,255,.35);
  border-radius: 8px; padding: 7px 13px; cursor: pointer; font: 700 .85rem inherit; }
.lang-btn:hover { background: rgba(255,255,255,.28); }

main { max-width: 1100px; margin: 0 auto; padding: 18px; display: flex; flex-direction: column; gap: 18px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; }
.panel h2 { margin: 0 0 12px; font-size: 1.05rem; color: var(--navy); }
.panel h3 { margin: 0 0 8px; font-size: .95rem; color: var(--navy); }

/* inputs grid (top) */
.in-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 4px 20px; }
.inputs label { display: block; font-size: .8rem; color: var(--muted); margin: 10px 0 0; font-weight: 600; }
.inputs label output { float: right; color: var(--navy); font-variant-numeric: tabular-nums; font-weight: 700; }
.inputs input[type=range] { width: 100%; margin-top: 5px; accent-color: var(--accent); }
.inputs .sel select { width: 100%; margin-top: 5px; padding: 6px; border: 1px solid var(--line); border-radius: 7px; font: inherit; }
.note { font-size: .74rem; color: var(--muted); margin: 14px 0 0; background: #eef2f6; padding: 10px; border-radius: 8px; border-left: 3px solid var(--navy2); }
.run-row { display: flex; gap: 8px; margin-top: 12px; }
.run-row .run-btn { flex: 1; width: auto; margin-top: 0; }
.dice-btn { flex: none; padding: 12px 14px; border: 1px solid var(--line); background: #fff; border-radius: 10px; cursor: pointer; font: 600 .9rem inherit; color: var(--navy); white-space: nowrap; }
.dice-btn:hover { background: #eef2f6; }
.run-btn { width: 100%; margin-top: 12px; padding: 12px; border: none; border-radius: 10px;
  background: var(--accent); color: #fff; font: 700 1rem inherit; cursor: pointer; transition: background .2s, box-shadow .2s; }
.run-btn:hover { background: #1769aa; }
.run-btn.stale { background: var(--eng); animation: pulse 1.1s ease-in-out infinite; }
.run-btn.stale::after { content: ' · ' attr(data-stale); font-weight: 500; opacity: .9; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(224,145,58,.5); } 50% { box-shadow: 0 0 0 6px rgba(224,145,58,0); } }

/* animation row: parking (left) + timeline (right) */
.anim-row { padding: 0; border: none; background: transparent; display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.25fr); gap: 18px; align-items: stretch; }
@media (max-width: 760px) { .anim-row { grid-template-columns: 1fr; } }
.anim-col { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.park-wrap { background: #f7fafc; border: 1px solid var(--line); border-radius: 10px; padding: 6px; }
#parking { width: 100%; display: block; }
.tl-ctrl { display: flex; align-items: center; gap: 8px; margin: 2px 0 8px; }
.tl-ctrl button { width: 30px; height: 30px; border: 1px solid var(--line); background: #fff; border-radius: 7px; cursor: pointer; font-size: .95rem; color: var(--navy); }
.tl-ctrl button:hover { background: #eef2f6; }
.tl-ctrl select { padding: 4px 6px; border: 1px solid var(--line); border-radius: 7px; font: inherit; }
.tl-ctrl input[type=range] { flex: 1; accent-color: var(--accent); }
.tl-wrap { background: #fbfdff; border: 1px solid var(--line); border-radius: 10px; padding: 6px; }
#timeline { width: 100%; display: block; }

/* results */
.status { font-size: .78rem; font-weight: 500; color: var(--muted); }
.status.ready { color: var(--lp); } .status.busy { color: var(--eng); }
.compare { display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 10px; margin: 4px auto 18px; max-width: 460px; }
.bigcard { text-align: center; }
.bigcard .cap { font-size: .78rem; color: var(--muted); margin-bottom: 8px; font-weight: 600; }
.bar-wrap { height: 150px; display: flex; align-items: flex-end; justify-content: center; }
.bar { width: 58px; border-radius: 8px 8px 0 0; transition: height .5s cubic-bezier(.2,.8,.2,1); min-height: 4px; }
.sq .bar { background: linear-gradient(var(--sq), #f08a8a); }
.lp .bar { background: linear-gradient(var(--lp), #6fce9b); }
.bigcard .peak { font-size: 1.25rem; font-weight: 800; margin-top: 8px; font-variant-numeric: tabular-nums; }
.arrow { font-size: 1.5rem; color: var(--lp); font-weight: 800; padding-bottom: 56px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 560px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { background: #f7fafc; border: 1px solid var(--line); border-radius: 10px; padding: 10px; text-align: center; }
.stat .k { font-size: .72rem; color: var(--muted); font-weight: 600; }
.stat .val { font-size: 1.2rem; font-weight: 800; color: var(--navy); font-variant-numeric: tabular-nums; }
.stat .u { font-size: .66rem; color: var(--muted); }
.chart-wrap { background: #fbfdff; border: 1px solid var(--line); border-radius: 10px; padding: 6px; margin-top: 8px; }
#pareto { width: 100%; height: auto; display: block; }

.legend { font-size: .74rem; color: var(--muted); margin: 8px 0 0; display: flex; gap: 12px; flex-wrap: wrap; }
.legend .lg::before { content: '● '; }
.lg.gold::before { content: '▨ '; } .lg.dot::before { content: '• '; } .lg.cur::before { content: '▮ '; } .lg.star::before { content: '★ '; }
.lg.peak, .lg.sq { color: var(--sq); } .lg.eng, .lg.gold { color: var(--eng); } .lg.pi, .lg.lp { color: var(--lp); }
.lg.star { color: var(--navy); } .lg.cur, .lg.dot { color: var(--accent); }
.lg.lp { color: var(--lp); } .lg.pi { color: var(--pi); }
.lg.extra { color: var(--eng); } .lg.fill { color: var(--lp); } .lg.cap { color: var(--sq); }
.lg.cap::before { content: '┄ '; }
.betastar { font-size: .82rem; color: var(--ink); background: #eef6f0; border-left: 3px solid var(--lp); padding: 8px 10px; border-radius: 8px; margin-top: 10px; }

footer { max-width: 1100px; margin: 0 auto; padding: 8px 18px 28px; font-size: .74rem; color: var(--muted); }
footer code { background: #e6ebf0; padding: 0 4px; border-radius: 3px; }
@media (prefers-reduced-motion: reduce) { .run-btn.stale { animation: none; } .bar { transition: none; } }