:root {
  --bg-1: #0f1724;
  --bg-2: #18283d;
  --paper: #f7faf8;
  --ink: #102233;
  --muted: #536678;
  --line: #c4d0d6;
  --accent: #ca5e21;
  --accent-soft: #f0c7af;
  --ok: #1b8f66;
  --warn: #a33d2f;
  --center: #d0482c;
  --node: #2f8e5b;
  --edge: #c3682b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "IBM Plex Sans", "Avenir Next", "Trebuchet MS", sans-serif;
  background: radial-gradient(circle at 8% 12%, #203653 0%, var(--bg-2) 32%, var(--bg-1) 88%);
}

.topbar {
  padding: 16px 22px;
  color: #f2f6fb;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.topbar h1 {
  margin: 0;
  letter-spacing: 0.12em;
  font-size: 1.55rem;
}

.topbar p {
  margin: 4px 0 0;
  color: #d5e0ea;
  font-size: 0.95rem;
}

.layout {
  display: grid;
  grid-template-columns: 332px minmax(700px, 1fr);
  gap: 12px;
  padding: 12px;
  align-items: start;
}

.panel {
  background: var(--paper);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow: 0 10px 34px rgba(5, 10, 14, 0.24);
}

.controls {
  padding: 10px;
  max-height: calc(100vh - 96px);
  overflow: auto;
}

.toolbar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-bottom: 6px;
}

.step-strip {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 7px;
  margin-bottom: 7px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.step-strip .muted {
  grid-column: 1 / -1;
  margin-top: 2px;
}

button {
  border: 1px solid #c7d4d8;
  background: #ffffff;
  color: #132635;
  border-radius: 9px;
  cursor: pointer;
  padding: 7px 8px;
  font-weight: 700;
  font-size: 0.83rem;
}

button:hover {
  border-color: #95a8b6;
}

.group {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  margin-bottom: 7px;
  background: #ffffff;
}

.group h2 {
  margin: 0 0 6px;
  color: #13324a;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

label {
  display: block;
  margin: 0 0 3px;
  color: var(--muted);
  font-size: 0.75rem;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.grid.two-col {
  grid-template-columns: 1fr 1fr;
}

.control {
  min-width: 0;
}

input[type="range"],
select,
input[type="number"],
input[type="text"],
input[type="file"] {
  width: 100%;
}

input[type="range"] {
  accent-color: var(--accent);
}

select,
input[type="number"],
input[type="text"] {
  border: 1px solid #c4d1d7;
  border-radius: 7px;
  padding: 6px;
  font-size: 0.8rem;
  color: #143143;
  background: #fff;
}

input[type="file"] {
  font-size: 0.74rem;
  color: #27455a;
}

.muted {
  margin: 5px 0 0;
  color: #6b7781;
  font-size: 0.72rem;
}

.links {
  margin: 6px 0 0;
  padding-left: 18px;
}

.links a {
  color: #265f84;
  text-decoration: none;
}

.links a:hover {
  text-decoration: underline;
}

.simulation {
  padding: 12px;
}

.status-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.92rem;
  margin-bottom: 8px;
}

#status-text {
  color: var(--ok);
  font-weight: 700;
}

#round-text {
  color: #38556c;
}

.decision-row {
  margin-bottom: 8px;
  color: #4d6a80;
  font-size: 0.88rem;
}

.action-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  grid-column: 1 / -1;
}

.switch-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: #213845;
  font-size: 0.73rem;
  line-height: 1.2;
  grid-column: 1 / -1;
}

#world-canvas {
  width: min(100%, 940px);
  height: auto;
  border: 1px solid #bdc9cf;
  border-radius: 10px;
  background: linear-gradient(145deg, #f3f6ee, #edf2f4);
  display: block;
  margin: 0 auto;
}

.monitor-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(6, minmax(110px, 1fr));
  gap: 8px;
}

.monitor-grid article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
}

.monitor-grid h3 {
  margin: 0;
  font-size: 0.74rem;
  color: #5a6e7e;
}

.monitor-grid p {
  margin: 6px 0 0;
  font-size: 0.95rem;
  font-weight: 800;
  color: #122839;
}

.chart-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.chart-grid canvas {
  width: 100%;
  height: auto;
  border: 1px solid #becad1;
  border-radius: 8px;
  background: #fff;
}

.note {
  min-height: 1.35rem;
  margin: 8px 2px 0;
  font-size: 0.86rem;
  color: var(--warn);
}

@media (max-width: 1260px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .controls {
    max-height: none;
  }
}

@media (max-width: 760px) {
  .toolbar {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid.two-col {
    grid-template-columns: 1fr;
  }

  .monitor-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}