:root {
  --bg-dark: #09090b;
  --sidebar-bg: rgba(24, 24, 27, 0.6);
  --card-bg: rgba(39, 39, 42, 0.4);
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --text-main: #f8fafc;
  --text-muted: #a1a1aa;
  --border: rgba(255, 255, 255, 0.1);
  --font-stack: system-ui, -apple-system, sans-serif;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-stack);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Glassmorphism Sidebar */
.sidebar {
  width: 250px;
  background: var(--sidebar-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px;
  position: fixed;
  height: 100vh;
  box-sizing: border-box;
}

.sidebar h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 2rem;
  letter-spacing: -0.5px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 8px;
  font-weight: 600;
  transition: all 0.2s;
}

.nav-link:hover, .nav-link.active {
  background: var(--card-bg);
  color: var(--text-main);
}

/* Main Content Area */
.main-content {
  margin-left: 250px;
  padding: 40px;
  flex-grow: 1;
  width: calc(100% - 250px);
  box-sizing: border-box;
}

/* Hero Banner */
.hero {
  background: linear-gradient(45deg, rgba(59, 130, 246, 0.2), transparent), var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  margin-bottom: 40px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  margin: 0 0 10px 0;
  font-size: 2.5rem;
}

/* UI Elements */
.search-bar {
  width: 100%;
  max-width: 500px;
  padding: 14px 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-main);
  font-size: 1rem;
  margin-bottom: 30px;
  outline: none;
  transition: border 0.2s;
}

.search-bar:focus {
  border-color: var(--accent);
}

.btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  text-decoration: none;
  display: inline-block;
}

.btn:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

/* Game Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}

.game-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s, border-color 0.2s;
  text-decoration: none;
  display: flex;
  flex-direction: column;
}

.game-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}

.game-icon {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
}

.game-title {
  padding: 15px;
  margin: 0;
  color: var(--text-main);
  font-weight: 600;
  text-align: center;
  font-size: 0.95rem;
}

/* Play Page Theater */
.theater-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
  background: var(--sidebar-bg);
  border-bottom: 1px solid var(--border);
}

.game-frame {
  width: 100%;
  height: calc(100vh - 70px);
  border: none;
  background: #000;
}