:root {
  --bg-color: #0d0e15;
  --panel-bg: rgba(20, 22, 33, 0.7);
  --primary-color: #00ff88; /* Neon Green */
  --primary-hover: #00cc6a;
  --secondary-color: #b500ff; /* Neon Purple */
  --text-main: #ffffff;
  --text-muted: #a0a5b5;
  --border-color: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --neon-glow: 0 0 10px rgba(0, 255, 136, 0.5), 0 0 20px rgba(0, 255, 136, 0.3);
  --neon-glow-purple: 0 0 10px rgba(181, 0, 255, 0.5), 0 0 20px rgba(181, 0, 255, 0.3);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', 'Outfit', sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(0, 255, 136, 0.05), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(181, 0, 255, 0.05), transparent 25%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Glassmorphism Panel */
.glass-panel {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
  padding: 2rem;
}

/* Typography */
h1, h2, h3 {
  font-weight: 700;
  letter-spacing: -0.5px;
}

h1.gradient-text {
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-center { text-align: center; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* Buttons */
.btn {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.05);
}

.btn-primary {
  background: var(--primary-color);
  color: #000;
  border: none;
  box-shadow: var(--neon-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 15px rgba(0, 255, 136, 0.7), 0 0 30px rgba(0, 255, 136, 0.5);
  transform: translateY(-2px);
}

.btn-secondary {
  border-color: var(--secondary-color);
  color: var(--secondary-color);
}

.btn-secondary:hover {
  background: rgba(181, 0, 255, 0.1);
  box-shadow: var(--neon-glow-purple);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Header/Navbar */
header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(13, 14, 21, 0.8);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--primary-color);
}

/* Main Container */
main {
  flex: 1;
  padding: 3rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 1rem;
  }
}