:root {
  --bg: #050607;
  --panel: #0f1115;
  --panel-border: rgba(255, 255, 255, 0.06);
  --text: #f4f5f7;
  --muted: rgba(244, 245, 247, 0.6);
  --accent: #f9c80e;
  --warning: #eb5e55;
  --success: #7fe0a3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 1.5rem clamp(1rem, 3vw, 2.5rem);
}

h1, h2, h3 {
  margin: 0 0 0.5rem;
  font-weight: 600;
}

p {
  margin: 0 0 0.5rem;
}

.status-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.2rem;
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.45);
}

.stat .label {
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.layout {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}


.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  padding: 1.25rem;
  flex: 1 1 320px;
  min-height: 100%;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.55);
}

.panel-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
}

.sub-panel + .sub-panel {
  margin-top: 1rem;
}

#buildingList {
  list-style: none;
  padding: 0;
  margin: 0;
}

#buildingList li {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.95rem;
}

#buildingList li span {
  color: var(--muted);
}

#constructionSelect {
  width: 100%;
  padding: 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  font-family: inherit;
}

.hint {
  color: var(--muted);
  font-size: 0.9rem;
}

#assignmentForm {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.assignment-row {
  display: grid;
  grid-template-columns: 1fr 110px;
  gap: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.02);
}

.assignment-row label {
  font-weight: 600;
}

.assignment-row p {
  color: var(--muted);
  font-size: 0.85rem;
}

.assignment-row input[type="number"] {
  width: 100%;
  padding: 0.5rem;
  border-radius: 12px;
  border: 1px solid var(--panel-border);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
  font-size: 1rem;
}

#error, .error {
  color: var(--warning);
}

#endTurnBtn, #playAgainBtn {
  padding: 0.9rem 1.4rem;
  border-radius: 999px;
  border: none;
  background: var(--accent);
  color: #1c1d1f;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  letter-spacing: 0.04em;
}

#endTurnBtn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

#endTurnBtn:hover:not(:disabled), #playAgainBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(249, 200, 14, 0.35);
}

.log-panel {
  margin-top: 1rem;
}

#logEntries {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.35);
  font-family: "Space Mono", monospace;
  font-size: 0.9rem;
  line-height: 1.4;
}

#logEntries p {
  margin: 0 0 0.25rem;
}

.overlay[hidden] {
  display: none !important;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 20, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99;
}

.overlay-content {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 28px;
  padding: 2.5rem;
  max-width: 520px;
  width: 100%;
  text-align: center;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.7);
}

.overlay-content ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
  text-align: left;
}

.overlay-content li {
  margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
  body {
    padding: 0.5rem;
  }

  .assignment-row {
    grid-template-columns: 1fr;
  }

  #metricsChart {
    width: 100%;
  }
}