/* ==================================================
   Glass-Morphism Gaming UI System
   Modern • Neon • Immersive • Responsive
================================================== */

/* ---------- ROOT VARIABLES ---------- */
:root {
  --glass-bg: rgba(15, 23, 42, 0.4);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
  --neon-cyan: #38bdf8;
  --neon-green: #22c55e;
  --neon-purple: #a855f7;
  --neon-pink: #ec4899;
  --neon-orange: #f97316;
  --text-primary: rgba(226, 232, 240, 0.96);
  --text-secondary: rgba(226, 232, 240, 0.7);
  --bg-dark: #020617;
  --bg-darker: #0f172a;
}

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

body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

/* ---------- PARTICLE BACKGROUND ---------- */
.particle-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--neon-cyan);
  border-radius: 50%;
  opacity: 0.6;
  animation: float 20s infinite linear;
  will-change: transform;
}

.particle:nth-child(odd) {
  background: var(--neon-green);
  animation-duration: 25s;
}

.particle:nth-child(3n) {
  background: var(--neon-purple);
  animation-duration: 30s;
}

@keyframes float {
  0% {
    transform: translateY(100vh) translateX(0) scale(0);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translateY(-100vh) translateX(100px) scale(1);
    opacity: 0;
  }
}

/* ---------- GLASS CARDS ---------- */
.game-glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow: var(--glass-shadow);
  padding: 24px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.game-glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(600px 300px at 20% 0%, rgba(56, 189, 248, 0.1), transparent 60%),
              radial-gradient(500px 250px at 80% 0%, rgba(34, 197, 94, 0.08), transparent 60%);
  pointer-events: none;
  z-index: -1;
}

.game-glass-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 35px 70px rgba(0, 0, 0, 0.7);
}

/* ---------- NEON BUTTONS ---------- */
.game-neon-btn {
  position: relative;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(34, 197, 94, 0.2));
  border: 1px solid var(--neon-cyan);
  border-radius: 16px;
  padding: 12px 24px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  overflow: hidden;
}

.game-neon-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.game-neon-btn:hover::before {
  left: 100%;
}

.game-neon-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 20px var(--neon-cyan), 0 0 40px var(--neon-cyan);
  border-color: var(--neon-green);
}

.game-neon-btn:active {
  transform: translateY(0);
}

/* ---------- GAME GRID ---------- */
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  padding: 24px;
}

.game-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 20px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.game-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(400px 200px at 30% 0%, rgba(168, 85, 247, 0.08), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.game-card:hover {
  transform: translateY(-8px) rotateX(5deg);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.8);
  border-color: var(--neon-purple);
}

.game-card-title {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.game-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.game-card-stats {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-secondary);
}

.game-card-stat {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ---------- MODAL ENHANCEMENTS ---------- */
.game-modal-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(30px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.7);
  overflow: hidden;
  position: relative;
}

.game-modal-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(800px 400px at 50% 0%, rgba(56, 189, 248, 0.1), transparent 60%);
  pointer-events: none;
  z-index: -1;
}

.game-modal-controls {
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  padding: 16px 20px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.game-modal-body {
  background: transparent;
  position: relative;
}

.game-modal-framewrap {
  position: relative;
  background: rgba(2, 6, 23, 0.8);
  border-radius: 16px;
  margin: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ---------- GAME CONTROLS ---------- */
.game-controls-bar {
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(15px);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  padding: 16px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.gc-btn {
  position: relative;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(34, 197, 94, 0.15));
  border: 1px solid var(--neon-cyan);
  border-radius: 14px;
  padding: 10px 16px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  backdrop-filter: blur(5px);
  overflow: hidden;
}

.gc-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.4s ease;
}

.gc-btn:hover::before {
  left: 100%;
}

.gc-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 15px var(--neon-cyan);
  border-color: var(--neon-green);
}

.gc-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.gc-start {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(22, 163, 74, 0.2));
  border-color: var(--neon-green);
  box-shadow: 0 0 15px rgba(34, 197, 94, 0.3);
}

.gc-pause {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(14, 165, 233, 0.2));
  border-color: var(--neon-cyan);
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.3);
}

.gc-stop {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(220, 38, 38, 0.2));
  border-color: #ef4444;
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.3);
}

.gc-restart {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(147, 51, 234, 0.2));
  border-color: var(--neon-purple);
  box-shadow: 0 0 15px rgba(168, 85, 247, 0.3);
}

/* ---------- FULLSCREEN ENHANCEMENTS ---------- */
.game-modal-panel:fullscreen {
  border-radius: 0;
  border: none;
  box-shadow: none;
  margin: 0;
  width: 100vw;
  height: 100vh;
  max-width: none;
  max-height: none;
}

.game-modal-panel:fullscreen .game-modal-framewrap {
  margin: 0;
  border-radius: 0;
  border: none;
  height: calc(100vh - 80px);
}

.game-modal-panel:fullscreen .game-modal-controls {
  border-radius: 0;
  padding: 20px 24px;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .game-grid {
    grid-template-columns: 1fr;
    padding: 16px;
  }
  
  .game-modal-panel {
    margin: 8px;
    width: calc(100vw - 16px);
    height: calc(100vh - 16px);
  }
  
  .game-modal-controls {
    padding: 12px 16px;
    gap: 8px;
  }
  
  .game-controls-bar {
    padding: 12px;
    gap: 8px;
  }
}

/* ---------- ANIMATIONS ---------- */
@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px var(--neon-cyan), 0 0 40px var(--neon-cyan);
  }
  50% {
    box-shadow: 0 0 30px var(--neon-cyan), 0 0 60px var(--neon-cyan);
  }
}

.pulse-glow {
  animation: pulse-glow 2s ease-in-out infinite;
}

/* ---------- ACCESSIBILITY ---------- */
@media (prefers-reduced-motion: reduce) {
  .particle {
    animation: none;
  }
  
  .game-card,
  .game-neon-btn,
  .gc-btn {
    transition: none;
  }
}

/* ---------- HIGH CONTRAST ---------- */
@media (prefers-contrast: high) {
  .game-glass-card,
  .game-card,
  .game-controls-bar {
    border-width: 2px;
  }
  
  .game-neon-btn,
  .gc-btn {
    border-width: 2px;
  }
}

/* ---------- PERFORMANCE ---------- */
.game-glass-card,
.game-card,
.game-modal-panel,
.game-controls-bar {
  will-change: transform;
  contain: layout style;
}

.particle {
  will-change: transform;
  contain: strict;
}