:root {
  --bg-color: #050505;
  --panel-bg: rgba(15, 52, 96, 0.4);
  --accent: #e94560;
  --neon-blue: #00f2ff;
  --neon-pink: #ff00ff;
  --text: #ffffff;
}

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

body {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background: var(--bg-color);
  background-image: 
    radial-gradient(circle at 50% 50%, #1a1a2e 0%, #050505 100%),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  color: var(--text);
  text-align: center;
  min-height: 100vh;
  overflow-x: hidden;
}

h1 {
  margin: 40px 0 20px;
  font-size: 3rem;
  text-transform: uppercase;
  letter-spacing: 4px;
  text-shadow: 0 0 10px var(--neon-blue), 0 0 20px var(--neon-blue);
  color: var(--neon-blue);
}

#coin {
  position: fixed;
  top: 20px;
  right: 30px;
  font-size: 1.5rem;
  background: var(--panel-bg);
  padding: 10px 20px;
  border-radius: 50px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 0 15px rgba(0,0,0,0.5);
  z-index: 100;
}

#menu {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  padding: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  width: 180px;
  padding: 30px 20px;
  background: var(--panel-bg);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.card:hover {
  transform: translateY(-10px) scale(1.05);
  background: rgba(233, 69, 96, 0.2);
  border-color: var(--accent);
  box-shadow: 0 0 30px rgba(233, 69, 96, 0.4);
}

.card .icon {
  font-size: 2.5rem;
  margin-bottom: 5px;
}

.card .title {
  font-weight: bold;
  font-size: 1.1rem;
  letter-spacing: 1px;
}

#game-container {
  margin: 20px auto;
  padding: 20px;
  min-height: 500px;
  display: none;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

#game-canvas-wrapper {
  position: relative;
  display: inline-block;
  background: #000;
  border-radius: 20px;
  box-shadow: 0 0 50px rgba(0,0,0,0.8);
  border: 2px solid var(--panel-bg);
  overflow: hidden;
}

canvas {
  display: block;
}

.btn {
  padding: 12px 25px;
  border: none;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 4px 15px rgba(233, 69, 96, 0.3);
}

.btn:hover {
  background: #ff5e78;
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(233, 69, 96, 0.5);
}

#back-btn {
  margin-bottom: 20px;
}

#ad {
  position: relative;
  width: 100%;
  background: var(--panel-bg);
  padding: 15px;
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  margin-top: 40px;
}

/* Ad Placement Containers */
.ad-slot {
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(0,0,0,0.2);
  border: 1px dashed rgba(255,255,255,0.1);
  margin: 20px auto;
  overflow: hidden;
  min-height: 90px;
}

.ad-top {
  max-width: 728px;
  margin-bottom: 20px;
}

.ad-side {
  position: fixed;
  top: 100px;
  width: 160px;
  height: 600px;
  display: none; /* Hidden on mobile */
}

.ad-left { left: 20px; }
.ad-right { right: 20px; }

@media (min-width: 1600px) {
  .ad-side { display: flex; }
}

@media (max-width: 768px) {
  .ad-top { width: 100%; min-height: 50px; }
}

/* Board Games UI */
.board-game-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 20px;
}

.board {
  background: #dcb35c;
  background-image: url('https://www.transparenttextures.com/patterns/wood-pattern.png');
  border: 4px solid #8b5a2b;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  cursor: pointer;
  border-radius: 4px;
  max-width: 90vw;
  height: auto;
}

#janggi-board {
  width: 480px; /* Reduced display size to "zoom out" */
  max-width: 95vw;
  max-height: 75vh;
  height: auto;
  aspect-ratio: 8 / 9;
}

.game-info {
  background: var(--panel-bg);
  padding: 15px 30px;
  border-radius: 50px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  font-weight: bold;
  letter-spacing: 1px;
}

.turn-indicator {
  color: var(--neon-blue);
  text-shadow: 0 0 10px var(--neon-blue);
}

.turn-black { color: #000; text-shadow: 0 0 5px #fff; }
.turn-white { color: #fff; text-shadow: 0 0 5px #000; }

/* Specific UI for games */
.game-ui {
  margin-bottom: 20px;
}

.score-display {
  font-size: 2rem;
  font-weight: bold;
  color: var(--neon-pink);
  text-shadow: 0 0 10px var(--neon-pink);
}