:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface2: #243044;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --border: #334155;
  --accent: #f59e0b;
  --accent2: #38bdf8;
  --green: #22c55e;
  --red: #ef4444;
  --purple: #a78bfa;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.brand { display: flex; gap: .75rem; align-items: center; }
.brand-icon { font-size: 1.75rem; }
.brand h1 { margin: 0; font-size: 1.15rem; }
.subtitle { margin: 0; color: var(--muted); font-size: .8rem; }

.nav { display: flex; flex-direction: column; gap: .35rem; }
.nav-btn {
  text-align: left;
  background: transparent;
  border: none;
  color: var(--muted);
  padding: .55rem .75rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: .9rem;
}
.nav-btn:hover { background: var(--surface2); color: var(--text); }
.nav-btn.active { background: var(--surface2); color: var(--accent); font-weight: 600; }

.disclaimer-box {
  margin-top: auto;
  font-size: .75rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .75rem;
  line-height: 1.4;
}

.main-wrap { display: flex; flex-direction: column; min-width: 0; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.topbar h2 { margin: 0; font-size: 1.25rem; }
#plan-name-display { margin: .15rem 0 0; color: var(--muted); font-size: .85rem; }

.topbar-actions { display: flex; gap: .5rem; }
.btn {
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  padding: .45rem .85rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: .85rem;
}
.btn.ghost:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 600; }

main { padding: 1.25rem 1.5rem 2rem; }
.view { display: none; }
.view.active { display: block; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}
.card h3 { margin: 0 0 1rem; font-size: .95rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }

.track-wrap { position: relative; display: flex; justify-content: center; }
.track-svg { width: 100%; max-width: 420px; height: auto; display: block; }
.track-oval { fill: none; stroke: var(--border); stroke-width: 8; stroke-dasharray: 12 8; }
.track-progress {
  fill: none;
  stroke: var(--accent);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 0 1;
  opacity: 0.85;
  transition: stroke-dasharray 0.9s cubic-bezier(0.4, 0, 0.2, 1);
}
.flag-label { font-size: 10px; fill: var(--muted); font-family: system-ui, sans-serif; }

.rat-marker {
  position: absolute;
  left: 50%;
  top: 83.9%;
  transform: translate(-50%, -50%);
  z-index: 2;
  pointer-events: none;
  transition: left 0.9s cubic-bezier(0.4, 0, 0.2, 1), top 0.9s cubic-bezier(0.4, 0, 0.2, 1);
}
.rat-hop { display: block; font-size: 2rem; line-height: 1; }
.rat-body { display: inline-block; }

.rat-marker.is-forward .rat-body {
  animation: rat-scurry 0.42s ease-in-out infinite;
}
.rat-marker.is-backward .rat-hop {
  transform: scaleX(-1);
}
.rat-marker.is-backward .rat-body {
  animation: rat-scurry 0.32s ease-in-out infinite;
}
.rat-marker.is-slow .rat-body {
  animation: rat-crawl 1.1s ease-in-out infinite;
}
.rat-marker.is-finished .rat-body {
  animation: rat-celebrate 0.55s ease-in-out infinite;
}

@keyframes rat-scurry {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-6px) rotate(-8deg); }
  50% { transform: translateY(0) rotate(0deg); }
  75% { transform: translateY(-4px) rotate(8deg); }
}
@keyframes rat-crawl {
  0%, 100% { transform: translateY(0); opacity: 0.85; }
  50% { transform: translateY(-2px); opacity: 1; }
}
@keyframes rat-celebrate {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-8px) scale(1.08); }
}

.direction-line { font-size: 1.15rem; font-weight: 600; margin: 1rem 0 .25rem; text-align: center; }
.pace-line { color: var(--muted); text-align: center; margin: 0; }

.direction-forward { color: var(--green); }
.direction-backward { color: var(--red); }
.direction-finished { color: var(--accent); }
.direction-slow { color: var(--purple); }

.kpi-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.kpi { display: flex; flex-direction: column; gap: .2rem; }
.kpi-label { font-size: .75rem; color: var(--muted); text-transform: uppercase; }
.kpi-value { font-size: 1.35rem; font-weight: 700; }
.kpi-sub { font-size: .78rem; color: var(--muted); }
.accent-red { border-left: 3px solid var(--red); }
.accent-blue { border-left: 3px solid var(--accent2); }
.accent-green { border-left: 3px solid var(--green); }
.accent-purple { border-left: 3px solid var(--purple); }

.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.form-grid.two-col { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

label {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  font-size: .82rem;
  color: var(--muted);
  margin-bottom: .75rem;
}
label input {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .5rem .65rem;
  border-radius: 8px;
  font-size: .95rem;
}
label input:focus {
  outline: 2px solid var(--accent);
  border-color: var(--accent);
}

.field-grid label { margin-bottom: .5rem; }

.muted { color: var(--muted); }
.small { font-size: .8rem; }

.lever-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.lever-card p { font-size: 1rem; margin: 0; line-height: 1.5; }

.track-marker text { font-size: 9px; fill: var(--muted); font-family: system-ui, sans-serif; }

.load-warn {
  font-size: .72rem;
  color: #fca5a5;
  border: 1px solid #7f1d1d;
  background: #450a0a;
  border-radius: 8px;
  padding: .65rem;
  line-height: 1.4;
}
.load-warn code { font-size: .7rem; }

@media (max-width: 900px) {
  body { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--border); }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .hero-grid { grid-template-columns: 1fr; }
}