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

html, body {
  height: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

#starfield, #particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

#particles {
  z-index: 9999;
}

#app {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - var(--nav-height));
  padding-top: var(--nav-height);
  padding-bottom: 20px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); }

a {
  color: var(--cyan);
  text-decoration: none;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  outline: none;
  touch-action: manipulation;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: transform var(--transition-med), box-shadow var(--transition-med);
}

.glass-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-cyan);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--touch-min);
  padding: 12px 28px;
  border-radius: var(--radius-lg);
  font-size: 1.1rem;
  font-weight: 700;
  transition: all var(--transition-med);
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), #0088cc);
  color: var(--bg-deep);
  box-shadow: var(--shadow-glow-cyan);
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px var(--cyan-glow), 0 0 60px rgba(0, 229, 255, 0.2);
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--orange));
  color: var(--bg-deep);
  box-shadow: var(--shadow-glow-gold);
}

.btn-pink {
  background: linear-gradient(135deg, var(--pink), #cc0066);
  color: white;
  box-shadow: var(--shadow-glow-pink);
}

.btn-green {
  background: linear-gradient(135deg, var(--green), #00aa55);
  color: var(--bg-deep);
  box-shadow: 0 0 20px var(--green-glow);
}

.text-cyan { color: var(--cyan); }
.text-gold { color: var(--gold); }
.text-pink { color: var(--pink); }
.text-green { color: var(--green); }

.hidden { display: none !important; }

@media (max-width: 768px) {
  #app {
    padding-bottom: calc(var(--mobile-tab-height) + 20px);
  }

  .page {
    padding: 16px;
  }
}