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

/* THEME VARIABLES */

:root {
  --bg: radial-gradient(circle at top, #111, #000);
  --card-bg: linear-gradient(145deg, #1a1a1a, #0f0f0f);
  --text: #eee;
  --accent: #ffb36b;
  --accent-secondary: #ff8a5c;
  --glow: 0 0 12px rgba(255, 179, 107, 0.7);
  --border-subtle: rgba(255, 255, 255, 0.08);
}

body.gold-mode {
  --bg: radial-gradient(circle at top, #2b1b00, #0d0900);
  --card-bg: linear-gradient(145deg, #3a2600, #1a1200);
  --text: #f7e7c1;
  --accent: #ffdd8a;
  --accent-secondary: #ffb45c;
  --glow: 0 0 16px rgba(255, 221, 138, 0.9);
  --border-subtle: rgba(255, 221, 138, 0.25);
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  text-align: center;
  overflow-x: hidden;
  transition: background 0.4s ease, color 0.4s ease;
}

/* THEME TOGGLE BUTTON */

#themeToggle {
  position: fixed;
  top: 18px;
  right: 18px;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 9px 16px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  z-index: 999;
  box-shadow: var(--glow);
  backdrop-filter: blur(6px);
  transition: background 0.3s, color 0.3s, transform 0.2s, box-shadow 0.3s;
}

#themeToggle:hover {
  background: var(--accent);
  color: #222;
  transform: translateY(-1px);
}

/* HEADER */

header {
  width: 100%;
  padding: 40px 20px 24px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border-subtle);
}

header h1 {
  font-size: 3rem;
  letter-spacing: 3px;
  text-shadow: var(--glow);
}

header p {
  font-size: 1.05rem;
  margin-top: 8px;
  color: rgba(240, 240, 240, 0.75);
}

/* MAIN & GRID */

main {
  flex: 1;
  width: 92%;
  max-width: 1100px;
  margin: 36px auto 40px;
}

.games {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

/* 3D TILT CARDS & NEON */

.game-card {
  background: var(--card-bg);
  border-radius: 14px;
  padding: 22px;
  box-shadow:
    0 8px 20px rgba(0, 0, 0, 0.7),
    inset 0 0 12px rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  transform-style: preserve-3d;
  perspective: 800px;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
}

.game-card:hover {
  box-shadow:
    0 12px 28px rgba(0, 0, 0, 0.85),
    inset 0 0 18px rgba(255, 255, 255, 0.08),
    var(--glow);
}

.game-card h2 {
  font-size: 1.55rem;
  margin-bottom: 14px;
  letter-spacing: 1px;
  text-shadow: var(--glow);
}

.thumb-img {
  width: 100%;
  height: 150px;
  border-radius: 10px;
  margin-bottom: 18px;
  background: linear-gradient(135deg, #3a3a3a, #1c1c1c);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.7rem;
  color: var(--accent);
  box-shadow: inset 0 0 14px #000, var(--glow);
  transform: translateZ(25px);
}

.game-card button {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  border: none;
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  color: #222;
  cursor: pointer;
  transition: opacity 0.3s, transform 0.2s, box-shadow 0.25s;
  transform: translateZ(20px);
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.7);
}

.game-card button:hover {
  opacity: 0.94;
  transform: scale(1.05) translateZ(20px);
  box-shadow: 0 0 14px rgba(0, 0, 0, 0.9);
}

/* FOOTER & CLASSY RETURN HOME */

footer {
  width: 100%;
  padding: 26px 20px 30px;
  background: rgba(0, 0, 0, 0.7);
  border-top: 1px solid var(--border-subtle);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

.home-link {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: radial-gradient(circle at top left, rgba(255,255,255,0.09), rgba(0,0,0,0.9));
  box-shadow: var(--glow);
  margin-bottom: 12px;
  transition: background 0.3s, transform 0.2s, box-shadow 0.3s;
}

.home-link-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  opacity: 0.85;
}

.home-link-main {
  font-size: 1.05rem;
  font-weight: 700;
}

.home-link:hover {
  transform: translateY(-1px);
  background: radial-gradient(circle at top, var(--accent), #2b2b2b);
  color: #222;
  box-shadow:
    0 0 16px rgba(0, 0, 0, 0.9),
    var(--glow);
}

.credit {
  color: rgba(240, 240, 240, 0.78);
  font-size: 0.9rem;
  line-height: 1.5;
}

.copyright {
  opacity: 0.95;
}

/* RESPONSIVE TWEAKS */

@media (max-width: 600px) {
  header h1 {
    font-size: 2.2rem;
  }

  header p {
    font-size: 0.95rem;
  }

  main {
    margin-top: 28px;
  }

  .game-card {
    padding: 18px;
  }

  #themeToggle {
    top: 14px;
    right: 14px;
    padding: 7px 14px;
    font-size: 0.8rem;
  }
}