:root {
  --bg: #161a1f;
  --surface: #222831;
  --surface-soft: #2f3640;
  --text: #ecf2f9;
  --muted: #b7c0cc;
  --accent: #ffd166;
  --danger: #ef476f;
  --ok: #06d6a0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #27313e, #101318 58%);
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

.layout {
  width: min(1280px, 100%);
  margin: 0 auto;
  padding: 16px;
}

.topbar {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(28, 33, 40, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 12px;
}

h1 {
  margin: 0;
  font-size: 1.35rem;
}

h2 {
  margin: 0;
  font-size: 1rem;
  color: var(--muted);
}

.controls,
.stats {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

select,
button {
  border: none;
  border-radius: 10px;
  padding: 9px 12px;
  font: inherit;
}

select {
  background: #0f141a;
  color: var(--text);
  border: 1px solid #3d4958;
}

button {
  background: #3a86ff;
  color: #fff;
  cursor: pointer;
}

button:hover:not(:disabled) {
  filter: brightness(1.1);
}

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

button.ghost {
  background: #4a5668;
}

.board {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 12px;
}

#gameCanvas {
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #1f2d3d;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  border-radius: 14px;
  background: rgba(27, 32, 39, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.turret-list {
  display: grid;
  gap: 10px;
}

.shop-list {
  display: grid;
  gap: 10px;
}

.shop-card {
  background: #1f2731;
  border: 1px solid #47586d;
  border-radius: 10px;
  padding: 10px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}

.shop-card strong {
  color: var(--text);
}

.shop-card button {
  justify-self: start;
  padding: 7px 10px;
  border-radius: 8px;
}

.turret-card {
  text-align: left;
  background: var(--surface-soft);
  border: 1px solid #4f5f74;
}

.turret-card.active {
  outline: 2px solid var(--accent);
}

.selected-card {
  min-height: 120px;
  padding: 10px;
  background: #1d242d;
  border-radius: 10px;
  border: 1px solid #435062;
  color: var(--muted);
}

.selected-card strong {
  color: var(--text);
}

.actions {
  display: flex;
  gap: 10px;
}

.actions button {
  flex: 1;
}

.tip {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.4;
}

.loadout-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 9, 14, 0.86);
  display: grid;
  place-items: center;
  z-index: 30;
  padding: 16px;
}

.loadout-overlay.hidden {
  display: none;
}

.loadout-modal {
  width: min(980px, 100%);
  max-height: 90vh;
  overflow: auto;
  background: #1b2129;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  padding: 16px;
  display: grid;
  gap: 12px;
}

.loadout-modal p {
  margin: 0;
  color: var(--muted);
}

.loadout-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}

.loadout-option {
  text-align: left;
  background: #2c3440;
  border: 1px solid #495a70;
  border-radius: 10px;
  color: var(--text);
  padding: 10px;
}

.loadout-option.selected {
  border-color: #ffd166;
  background: #334158;
  box-shadow: inset 0 0 0 1px rgba(255, 209, 102, 0.35);
}

.loadout-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 1080px) {
  .board {
    grid-template-columns: 1fr;
  }

  .topbar {
    grid-template-columns: 1fr;
  }
}