/* ============================================================
   NEON ARCADE · 霓虹街机 — Cyberpunk Portal for 12 H5 Games
   ============================================================ */
:root {
  --bg: #04040e;
  --text: #c8d6e5;
  --accent: #00fff7;
  --pink: #ff2d95;
  --purple: #b026ff;
  --green: #39ff14;
  --yellow: #ffea00;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ---- Scanlines overlay ---- */
#scanlines {
  position: fixed; inset: 0; z-index: 9999;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg, transparent, transparent 2px,
    rgba(0,255,247,0.015) 2px, rgba(0,255,247,0.015) 4px
  );
}

/* ---- Particle canvas ---- */
#particles {
  position: fixed; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0,255,247,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(255,45,149,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(176,38,255,0.03) 0%, transparent 40%);
}

/* ---- Header ---- */
header {
  position: relative; z-index: 1;
  text-align: center; padding: 50px 20px 30px;
}

.glitch {
  font-family: 'Arial Black', Impact, sans-serif;
  font-size: clamp(2rem, 8vw, 4rem);
  color: var(--accent);
  text-shadow:
    0 0 10px var(--accent),
    0 0 20px var(--accent),
    0 0 40px var(--accent),
    2px 0 var(--pink), -1px 0 var(--purple);
  letter-spacing: 6px;
  position: relative;
  animation: glitch 3s infinite;
}

@keyframes glitch {
  0%, 90%, 100% { transform: translate(0); }
  92% { transform: translate(-3px, 1px); }
  94% { transform: translate(3px, -1px); }
  96% { transform: translate(-2px, 2px); }
  98% { transform: translate(2px, -2px); }
}

.sub {
  color: var(--pink);
  font-size: clamp(0.8rem, 2.5vw, 1.1rem);
  letter-spacing: 4px;
  margin-top: 8px;
  text-shadow: 0 0 10px rgba(255,45,149,0.3);
}

.desc {
  color: #667799;
  font-size: 0.85rem;
  margin-top: 6px;
}

/* ---- Game Grid ---- */
#game-grid {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  max-width: 1200px;
  margin: 20px auto;
  padding: 0 20px 40px;
}

.game-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px 18px;
  background: rgba(10,10,30,0.6);
  border: 1.5px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(4px);
  cursor: pointer;
}

.game-card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, 
    var(--accent) 0%, transparent 30%, transparent 70%, var(--accent) 100%);
  opacity: 0;
  transition: opacity 0.3s;
}

.game-card:hover {
  transform: translateY(-4px) scale(1.02);
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(0,255,247,0.15), 0 8px 30px rgba(0,0,0,0.4);
}

.game-card:hover::before {
  opacity: 0.08;
}

.game-card .icon {
  font-size: 2.4rem;
  margin-bottom: 8px;
  transition: transform 0.3s;
  filter: drop-shadow(0 0 6px var(--accent));
}

.game-card:hover .icon {
  transform: scale(1.2);
}

.game-card .gtitle {
  font-size: 1.05rem;
  font-weight: bold;
  color: #fff;
  text-shadow: 0 0 8px rgba(255,255,255,0.1);
  margin-bottom: 4px;
}

.game-card .gdesc {
  font-size: 0.8rem;
  color: #8899bb;
  margin-bottom: 6px;
}

.game-card .gtech {
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0.7;
}

/* ---- Footer ---- */
footer {
  position: relative; z-index: 1;
  text-align: center;
  padding: 30px 20px 40px;
  border-top: 1px solid rgba(0,255,247,0.08);
  color: #445566;
  font-size: 0.8rem;
}

footer .small {
  font-size: 0.7rem;
  color: #334455;
  margin-top: 4px;
}

/* ---- Responsive ---- */
@media (max-width: 600px) {
  header { padding: 30px 15px 20px; }
  #game-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 0 12px 30px;
  }
  .game-card { padding: 16px 10px 14px; }
  .game-card .icon { font-size: 1.8rem; }
  .game-card .gtitle { font-size: 0.85rem; }
  .game-card .gdesc { display: none; }
}

@media (max-width: 400px) {
  #game-grid { grid-template-columns: 1fr; }
}