:root {
  --bg0: #0a0a12;
  --bg1: #12121f;
  --bg2: #1a1a2e;
  --accent: #00f0ff;
  --accent2: #ff0055;
  --accent3: #7fff00;
  --text: #e0e0e0;
  --muted: #8888aa;
  --border: #2a2a40;
  --glow: 0 0 10px var(--accent), 0 0 20px rgba(0,240,255,0.3);
}

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

body {
  background: var(--bg0);
  color: var(--text);
  font-family: 'Courier New', Courier, monospace;
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

#app {
  display: grid;
  grid-template-columns: 260px 1fr 280px;
  grid-template-rows: 48px 1fr;
  grid-template-areas:
    "header header header"
    "left main right";
  height: 100vh;
  width: 100vw;
  gap: 1px;
  background: var(--bg0);
}

.panel {
  background: var(--bg1);
  border: 1px solid var(--border);
  padding: 12px;
  overflow-y: auto;
}

.panel::-webkit-scrollbar { width: 6px; }
.panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

#top-bar {
  grid-area: header;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg2);
  border-bottom: 2px solid var(--accent);
  padding: 0 16px;
}

#top-bar h1 {
  font-size: 18px;
  color: var(--accent);
  text-shadow: var(--glow);
  letter-spacing: 2px;
}

#top-bar .stats {
  display: flex;
  gap: 20px;
  font-size: 13px;
}

#top-bar .stat {
  display: flex;
  align-items: center;
  gap: 6px;
}

#top-bar .stat .label { color: var(--muted); }
#top-bar .stat .value { color: var(--accent3); font-weight: bold; }

#left-panel { grid-area: left; }
#right-panel { grid-area: right; }
#main-panel { grid-area: main; position: relative; }

.section-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
}

.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
  margin-bottom: 10px;
  transition: all 0.2s;
  cursor: pointer;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 8px rgba(0,240,255,0.15);
}

.card.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.card .card-title {
  font-size: 13px;
  font-weight: bold;
  color: var(--text);
  margin-bottom: 4px;
}

.card .card-desc {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
}

.card .card-cost {
  font-size: 11px;
  color: var(--accent2);
}

.card .card-effect {
  font-size: 11px;
  color: var(--accent3);
}

.btn {
  background: var(--bg2);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 8px 16px;
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.15s;
}

.btn:hover {
  background: var(--accent);
  color: var(--bg0);
  box-shadow: var(--glow);
}

.btn:disabled {
  border-color: var(--border);
  color: var(--muted);
  cursor: not-allowed;
  box-shadow: none;
}

#game-canvas {
  width: 100%;
  height: 100%;
  display: block;
  background: radial-gradient(ellipse at center, #12121f 0%, #0a0a12 100%);
}

.floating-text {
  position: absolute;
  pointer-events: none;
  font-size: 12px;
  font-weight: bold;
  animation: floatUp 1.2s ease-out forwards;
  text-shadow: 0 0 6px currentColor;
}

@keyframes floatUp {
  0% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-60px) scale(1.3); }
}

.particle {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  animation: particleFade 0.8s ease-out forwards;
}

@keyframes particleFade {
  0% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(0); }
}

#login-overlay, #register-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,10,18,0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.login-box {
  background: var(--bg1);
  border: 2px solid var(--accent);
  border-radius: 8px;
  padding: 32px;
  width: 340px;
  box-shadow: var(--glow);
}

.login-box h2 {
  color: var(--accent);
  text-align: center;
  margin-bottom: 20px;
  text-shadow: var(--glow);
}

.login-box input {
  width: 100%;
  background: var(--bg0);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px;
  margin-bottom: 12px;
  font-family: inherit;
  border-radius: 4px;
}

.login-box input:focus {
  outline: none;
  border-color: var(--accent);
}

.login-box .btn {
  width: 100%;
  margin-top: 8px;
}

.login-box .link {
  display: block;
  text-align: center;
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
}

.login-box .link:hover { color: var(--accent); }

.hidden { display: none !important; }

#event-banner {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg2);
  border: 1px solid var(--accent2);
  color: var(--accent2);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 12px;
  z-index: 50;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 5px var(--accent2); }
  50% { box-shadow: 0 0 15px var(--accent2); }
}

#leaderboard-modal {
  position: fixed;
  inset: 0;
  background: rgba(10,10,18,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
}

.leaderboard-box {
  background: var(--bg1);
  border: 2px solid var(--accent);
  border-radius: 8px;
  padding: 24px;
  width: 400px;
  max-height: 80vh;
  overflow-y: auto;
}

.leaderboard-box h2 {
  color: var(--accent);
  margin-bottom: 16px;
  text-align: center;
}

.leaderboard-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.leaderboard-row .rank { color: var(--accent); width: 40px; }
.leaderboard-row .name { flex: 1; }
.leaderboard-row .score { color: var(--accent3); }

.tooltip {
  position: absolute;
  background: var(--bg2);
  border: 1px solid var(--accent);
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 11px;
  z-index: 200;
  pointer-events: none;
  max-width: 220px;
}

.prestige-btn {
  background: linear-gradient(135deg, var(--accent2), #ff5500);
  border: none;
  color: white;
  font-weight: bold;
}

.prestige-btn:hover {
  box-shadow: 0 0 15px var(--accent2);
}

#save-status {
  font-size: 11px;
  color: var(--muted);
}