* {
  box-sizing: border-box;
}

:root {
  --bg: #0b1220;
  --panel: #111d2a;
  --panel-alt: #15273a;
  --border: #294767;
  --text: #eaf3ff;
  --muted: #9db3c9;
  --accent: #67d5ff;
  --good: #59d68b;
  --warn: #f2c66d;
  --danger: #ff7a7a;
  --shadow: rgba(0, 0, 0, 0.35);
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: linear-gradient(180deg, #09131d 0%, #101b2a 100%);
  color: var(--text);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  min-height: 100vh;
}

button {
  font: inherit;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.app-shell {
  max-width: 1600px;
  margin: 0 auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  background: rgba(17, 29, 42, 0.95);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  box-shadow: 0 8px 18px var(--shadow);
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 1rem;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
  flex: 1;
}

.resource-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.resource-pill {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.85rem;
  color: var(--text);
  white-space: nowrap;
}

.action-toolbar {
  display: flex;
  gap: 6px;
}

.topbar-button {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 12px;
  background: linear-gradient(180deg, #1d334b 0%, #13273a 100%);
  color: var(--text);
  cursor: pointer;
  font-size: 0.85rem;
  white-space: nowrap;
}

.topbar-button.warning {
  background: linear-gradient(180deg, #4d2a2a 0%, #2b1818 100%);
}

.topbar-button.success {
  background: linear-gradient(180deg, #2a4d2a 0%, #182b18 100%);
}

.main-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 390px);
  gap: 12px;
  align-items: start;
  flex: 1;
}

.map-panel {
  background: rgba(17, 29, 42, 0.95);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  box-shadow: 0 8px 18px var(--shadow);
  overflow: auto;
}

#gameCanvas {
  width: 100%;
  display: block;
  border-radius: 10px;
  background: #0a0f15;
  border: 1px solid rgba(255, 255, 255, 0.06);
  max-width: 100%;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

.panel-box {
  background: rgba(17, 29, 42, 0.95);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  box-shadow: 0 8px 18px var(--shadow);
}

.selection-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--accent);
}

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

.meta-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 5px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 0.88rem;
}

.meta-row strong {
  color: var(--text);
}

.action-stack {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.action-button,
.level-button,
.transfer-button {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 10px;
  background: linear-gradient(180deg, #1d334b 0%, #13273a 100%);
  color: var(--text);
  cursor: pointer;
  font-size: 0.85rem;
  text-align: left;
}

.action-button:hover:not(:disabled),
.level-button:hover:not(:disabled),
.transfer-button:hover:not(:disabled) {
  border-color: var(--accent);
}

.level-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  margin-top: 6px;
}

.level-button {
  padding: 5px 8px;
  font-size: 0.8rem;
}

.level-button.active {
  border-color: var(--good);
  background: linear-gradient(180deg, #1a4330 0%, #112d22 100%);
}

.inventory-section,
.transfer-section {
  margin-top: 10px;
  padding: 8px;
  background: rgba(20, 35, 50, 0.5);
  border: 1px solid rgba(41, 71, 103, 0.5);
  border-radius: 6px;
}

.inventory-section h4,
.transfer-section h4 {
  margin: 0 0 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

.inventory-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
  font-size: 0.85rem;
}

.inventory-item strong {
  color: var(--accent);
}

.transfer-buttons {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.transfer-button {
  padding: 5px 8px;
  font-size: 0.8rem;
}

.large-note {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.4;
  font-size: 0.85rem;
}

#economyTable {
  width: 100%;
  border-collapse: collapse;
  margin-top: 4px;
  font-size: 0.8rem;
}

#economyTable th,
#economyTable td {
  padding: 4px 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  text-align: left;
}

#economyTable th {
  color: var(--muted);
  font-weight: 600;
  text-align: center;
}

#economyTable td:last-child {
  text-align: right;
  color: var(--accent);
  font-weight: 600;
}

@media (max-width: 1200px) {
  .main-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    max-height: none;
  }
}

@media (max-width: 768px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar-group {
    justify-content: flex-start;
    width: 100%;
  }

  .resource-pill {
    font-size: 0.8rem;
    padding: 5px 8px;
  }
}