:root {
  --bg: #0c1410;
  --panel: #142018;
  --border: #2a5040;
  --green: #5ce090;
  --lime: #b8f060;
  --gold: #ffd060;
  --warn: #ff9a50;
  --bad: #ff5577;
  --muted: #7a9a88;
  --soil-bad: #5a4030;
  --soil-ok: #6a5a30;
  --soil-good: #3a6a28;
  --font: "VT323", monospace;
  --tech: "Orbitron", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  min-height: 100%;
  background:
    radial-gradient(ellipse 70% 40% at 50% 0%, rgba(92, 224, 144, 0.08), transparent),
    var(--bg);
  color: #e8ffe8;
  font-family: var(--font);
  -webkit-text-size-adjust: 100%;
  touch-action: manipulation;
}

.arcade-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  background: #000;
  border-bottom: 2px solid var(--green);
  font-size: 18px;
  letter-spacing: 2px;
}
.arcade-bar a {
  color: var(--green);
  text-decoration: none;
  border: 1px solid #1a4030;
  padding: 4px 10px;
}
.arcade-bar a:hover { border-color: var(--green); }
.arcade-bar .title { color: var(--lime); letter-spacing: 3px; }

#app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px;
  display: grid;
  grid-template-columns: 1fr 280px;
  grid-template-rows: auto auto 1fr;
  gap: 10px;
}

@media (max-width: 900px) {
  #app { grid-template-columns: 1fr; }
}

.hud {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 10px;
  background: var(--panel);
  border: 2px solid var(--border);
}
.hud-item {
  min-width: 72px;
  padding: 4px 8px;
  background: #0a120e;
  border: 1px solid #1a3028;
  text-align: center;
}
.hud-item .l { font-size: 11px; color: var(--muted); letter-spacing: 1px; text-transform: uppercase; }
.hud-item .v { font-size: 20px; color: var(--lime); }
.hud-item .v.bad { color: var(--bad); }
.hud-item .v.warn { color: var(--warn); }
.hud-item .v.gold { color: var(--gold); }

.toolbar {
  grid-column: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px;
  background: var(--panel);
  border: 2px solid var(--border);
}
.tool {
  font: inherit;
  font-size: 15px;
  letter-spacing: 1px;
  padding: 6px 10px;
  border: 2px solid #2a4038;
  background: #0e1812;
  color: #c8e8d0;
  cursor: pointer;
}
.tool:hover { border-color: var(--green); }
.tool.active {
  border-color: var(--lime);
  background: #1a3020;
  color: var(--lime);
  box-shadow: 0 0 0 1px var(--lime);
}
.tool .cost { color: var(--gold); font-size: 13px; }

.stage-wrap {
  grid-column: 1;
  position: relative;
  background: #0a100c;
  border: 3px solid var(--border);
  box-shadow: 4px 4px 0 #000;
  line-height: 0;
  overflow: hidden;
}
#farm {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  cursor: crosshair;
  background: #1a2010;
}
.stage-wrap.vhs::after {
  content: "";
  pointer-events: none;
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(255, 0, 80, 0.04) 2px,
    rgba(0, 255, 200, 0.03) 3px
  );
  mix-blend-mode: screen;
  animation: glitch 0.4s steps(2) infinite;
}
@keyframes glitch {
  0% { transform: translate(0, 0); }
  50% { transform: translate(-1px, 1px); }
  100% { transform: translate(1px, -1px); }
}

.side {
  grid-column: 2;
  grid-row: 2 / 4;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
@media (max-width: 900px) {
  .side { grid-column: 1; grid-row: auto; }
}

.panel {
  background: var(--panel);
  border: 2px solid var(--border);
  padding: 10px 12px;
}
.panel h3 {
  font-family: var(--tech);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--green);
  margin-bottom: 8px;
}
.bar {
  height: 12px;
  background: #0a120e;
  border: 1px solid #2a4030;
  margin: 4px 0 8px;
  position: relative;
  overflow: hidden;
}
.bar > i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #8a4030, #c8a040, #40c860);
  width: 30%;
}
.bar.bio > i { background: linear-gradient(90deg, #4060a0, #40c8a0, #80ff60); }
.bar.carbon > i { background: linear-gradient(90deg, #405060, #60a0c0, #a0e0ff); }
.meta { font-size: 15px; color: var(--muted); line-height: 1.35; margin-bottom: 6px; }
.meta strong { color: var(--lime); }
.log {
  font-size: 14px;
  color: #a0c8b0;
  max-height: 120px;
  overflow-y: auto;
  line-height: 1.35;
}
.log .bad { color: var(--bad); }
.log .good { color: var(--lime); }
.log .tip { color: var(--gold); }

.shop-list { display: flex; flex-direction: column; gap: 4px; max-height: 180px; overflow-y: auto; }
.shop-item {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  padding: 5px 6px;
  background: #0a120e;
  border: 1px solid #1a3028;
  font-size: 14px;
  cursor: pointer;
}
.shop-item:hover { border-color: var(--green); }
.shop-item .price { color: var(--gold); }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 10, 8, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  padding: 16px;
}
.overlay.hidden { display: none; }
.modal {
  max-width: 480px;
  width: 100%;
  background: #142018;
  border: 3px solid var(--green);
  padding: 22px 20px;
  text-align: center;
  box-shadow: 0 0 30px rgba(92, 224, 144, 0.15);
}
.modal h1 {
  font-family: var(--tech);
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  color: var(--lime);
  margin-bottom: 8px;
}
.modal p { font-size: 17px; line-height: 1.45; color: #c8e8d0; margin-bottom: 10px; }
.modal ul { text-align: left; max-width: 360px; margin: 0 auto 14px; font-size: 16px; color: #a8c8b0; }
.modal li { margin: 4px 0; }
.btn {
  font: inherit;
  font-size: 16px;
  letter-spacing: 2px;
  padding: 10px 16px;
  border: 2px solid #0a100c;
  background: var(--green);
  color: #0a140c;
  cursor: pointer;
  margin: 4px;
  text-transform: uppercase;
}
.btn.ghost {
  background: transparent;
  color: var(--green);
  border-color: var(--border);
}
.btn:hover { filter: brightness(1.1); }

.toast {
  position: fixed;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  background: #142018;
  border: 2px solid var(--gold);
  color: var(--gold);
  padding: 8px 14px;
  font-size: 16px;
  z-index: 30;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
}
.toast.show { opacity: 1; }

.save-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.save-row .btn {
  flex: 1;
  min-width: 80px;
  margin: 0;
}

/* Mobile */
@media (max-width: 900px) {
  #app {
    padding: 8px;
    gap: 8px;
  }

  .arcade-bar {
    padding: 6px 10px;
    font-size: 16px;
  }

  .arcade-bar a {
    padding: 8px 12px;
    min-height: 40px;
    display: inline-flex;
    align-items: center;
  }

  .arcade-bar .title {
    font-size: 14px;
    letter-spacing: 1px;
  }

  .hud {
    gap: 4px;
    padding: 6px;
  }

  .hud-item {
    min-width: 0;
    flex: 1 1 18%;
    padding: 4px 2px;
  }

  .hud-item .l { font-size: 10px; }
  .hud-item .v { font-size: 16px; }

  .toolbar {
    position: sticky;
    top: 0;
    z-index: 8;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 6px;
    padding: 8px;
    scrollbar-width: thin;
  }

  .tool {
    flex: 0 0 auto;
    min-height: 44px;
    padding: 10px 12px;
    font-size: 14px;
    white-space: nowrap;
  }

  .stage-wrap {
    max-width: 100%;
    touch-action: manipulation;
  }

  #farm {
    touch-action: manipulation;
    width: 100%;
    height: auto;
  }

  .side {
    gap: 8px;
  }

  .panel {
    padding: 8px 10px;
  }

  .panel h3 {
    font-size: 10px;
    margin-bottom: 6px;
  }

  .log {
    max-height: 80px;
  }

  .shop-list {
    max-height: 140px;
  }

  .shop-item {
    min-height: 40px;
    align-items: center;
    padding: 8px;
  }

  .modal {
    padding: 16px 14px;
    max-height: 90vh;
    overflow-y: auto;
  }

  .modal h1 { font-size: 1rem; }
  .modal p { font-size: 15px; }
  .modal ul { font-size: 14px; }

  .btn {
    min-height: 44px;
    padding: 12px 14px;
  }

  .toast {
    bottom: 12px;
    left: 8px;
    right: 8px;
    transform: none;
    text-align: center;
  }
}

@media (max-width: 380px) {
  .arcade-bar .title { letter-spacing: 0; font-size: 13px; }
  .hud-item { flex: 1 1 22%; }
}