* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #0f172a;
  color: #f8fafc;
  min-height: 100vh;
}

.app-header {
  padding: 1.5rem 2rem;
  background-color: #1e293b;
  border-bottom: 2px solid #3b82f6;
  text-align: center;
}

.app-header h1 {
  margin: 0;
  font-size: 2.25rem;
  color: #ffffff;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Responsive Grid */
#gameGrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.75rem;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.game-card {
  background-color: #1e293b;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 2px solid #334155;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}

.game-card:hover {
  transform: translateY(-4px);
  border-color: #3b82f6;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.6);
}

.game-image {
  width: 100%;
  height: 150px;
  object-fit: cover;
  background-color: #020617;
}

.game-info {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  background-color: #0f172a; /* High contrast background */
}

/* Large, High-Visibility Game Titles */
.game-info h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.4rem; /* Extra large font */
  font-weight: 800;
  color: #ffffff !important; /* Force bright white color */
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8); /* Drop shadow for visibility */
  line-height: 1.25;
}

.category {
  font-size: 0.85rem;
  color: #38bdf8; /* Bright sky blue for category */
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.play-btn {
  margin-top: auto;
  padding: 0.75rem 1rem;
  background-color: #2563eb;
  color: #ffffff;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.play-btn:hover {
  background-color: #1d4ed8;
}

/* Fullscreen Overlay */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: #000000;
  z-index: 9999;
}

.modal-content {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

/* Header bar inside full screen game mode */
.modal-bar {
  height: 50px;
  background-color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  border-bottom: 2px solid #334155;
}

.close-btn {
  background: transparent;
  border: none;
  font-size: 1.1rem;
  font-weight: 800;
  color: #38bdf8;
  cursor: pointer;
  padding: 0;
}

.close-btn:hover {
  color: #60a5fa;
}

.active-game-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
}

#gameFrame {
  width: 100%;
  height: calc(100vh - 50px);
  border: none;
}