:root {
  --ink: #171717;
  --muted: #66635c;
  --paper: #f8f5ee;
  --panel: #fffdf7;
  --line: #d8d1c2;
  --asphalt: #34373d;
  --sea: #6cc7c9;
  --date: #9a6a2f;
  --flag-red: #cf2e2e;
  --flag-green: #168a4a;
  --gold: #d8a83b;
  --blue: #2f68ad;
  --shadow: 0 18px 45px rgba(28, 25, 20, 0.18);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background:
    linear-gradient(180deg, rgba(108, 199, 201, 0.18) 0 18%, transparent 18%),
    var(--paper);
  color: var(--ink);
}

button {
  font: inherit;
}

.game-shell {
  width: min(1420px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 16px;
  align-items: stretch;
}

.play-panel,
.control-panel {
  min-width: 0;
}

.hud-bar {
  display: grid;
  grid-template-columns: repeat(3, minmax(106px, 1fr)) minmax(190px, 1.4fr);
  gap: 8px;
  margin-bottom: 10px;
}

.stat {
  min-height: 60px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.92);
  box-shadow: 0 8px 24px rgba(35, 31, 24, 0.08);
}

.stat span {
  display: block;
  font-size: 0.72rem;
  line-height: 1.2;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0;
}

.stat strong {
  display: block;
  margin-top: 3px;
  font-size: clamp(1.05rem, 1.8vw, 1.45rem);
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.canvas-frame {
  position: relative;
  width: 100%;
  border: 1px solid #bcb3a0;
  border-radius: 8px;
  overflow: hidden;
  background: #eadbbd;
  box-shadow: var(--shadow);
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  touch-action: manipulation;
  cursor: crosshair;
}

.toast {
  position: absolute;
  left: 50%;
  top: 18px;
  transform: translateX(-50%);
  max-width: min(520px, calc(100% - 32px));
  padding: 10px 14px;
  border: 1px solid rgba(23, 23, 23, 0.18);
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.94);
  color: var(--ink);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.16);
  font-weight: 700;
  text-align: center;
  pointer-events: none;
}

.toast.hidden {
  opacity: 0;
}

.control-panel {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.95);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--flag-green);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(1.3rem, 2vw, 1.65rem);
  line-height: 1.05;
}

h2 {
  margin-bottom: 8px;
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0;
}

.action-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 8px;
}

.primary-btn,
.secondary-btn,
.icon-btn,
.tower-card button,
.tower-actions button {
  border: 1px solid rgba(23, 23, 23, 0.18);
  border-radius: 8px;
  min-height: 42px;
  padding: 10px 12px;
  color: var(--ink);
  background: #fffaf0;
  cursor: pointer;
  transition:
    transform 120ms ease,
    box-shadow 120ms ease,
    border-color 120ms ease;
}

.primary-btn {
  background: var(--flag-red);
  color: white;
  border-color: #a92121;
  font-weight: 900;
}

.secondary-btn,
.icon-btn {
  font-weight: 800;
}

.icon-btn {
  width: 42px;
  padding-inline: 0;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(40, 34, 25, 0.12);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.tower-list {
  display: grid;
  gap: 8px;
}

.tower-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff9ec;
  overflow: hidden;
}

.tower-card button {
  width: 100%;
  min-height: 82px;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  text-align: left;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.tower-card.selected {
  border-color: var(--flag-green);
  box-shadow: inset 4px 0 0 var(--flag-green);
}

.tower-card.locked {
  opacity: 0.62;
}

.tower-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: white;
  font-size: 0.86rem;
  font-weight: 900;
  border: 2px solid rgba(255, 255, 255, 0.7);
}

.tower-name {
  display: block;
  font-weight: 900;
  line-height: 1.1;
}

.tower-desc {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.25;
}

.tower-cost {
  align-self: start;
  min-width: 54px;
  color: var(--date);
  font-weight: 900;
  text-align: right;
}

.tower-info,
.small-print {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.tower-info p,
.small-print p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

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

.tower-actions button:first-child {
  background: var(--flag-green);
  color: white;
  border-color: #0f6337;
  font-weight: 900;
}

.tower-actions button:last-child {
  background: #fff6f6;
  color: #9e2020;
  font-weight: 900;
}

@media (max-width: 980px) {
  .game-shell {
    grid-template-columns: 1fr;
    padding: 10px;
  }

  .control-panel {
    order: -1;
  }

  .tower-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 650px) {
  .hud-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stat.wide {
    grid-column: span 2;
  }

  .tower-list {
    grid-template-columns: 1fr;
  }

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

  .primary-btn {
    grid-column: span 2;
  }
}