:root {
  --bg-color: #0a0a0f;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --primary-glow: #00f0ff;
  --accent-magenta: #ff00ff;
  --card-bg: #1a1a2e;
  --secondary-bg: #0f3460;
  --border-color: #16213e;
  --border-glow: rgba(0, 240, 255, 0.1);
  --success: #00ff88;
  --error: #ff4444;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

/* High-Visibility Sci-Fi Neon Scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: #00f0ff rgba(10, 15, 30, 0.9);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: rgba(10, 15, 30, 0.95);
  border-left: 1px solid rgba(0, 240, 255, 0.15);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #00f0ff, #0f3460);
  border-radius: 5px;
  border: 1px solid rgba(0, 240, 255, 0.4);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

::-webkit-scrollbar-thumb:hover {
  background: #00f0ff;
  box-shadow: 0 0 18px #00f0ff;
}

/* Nav */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 5%;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(10px);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.logo img {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--primary-glow);
  text-shadow: 0 0 8px var(--primary-glow);
}

/* Buttons */
.btn {
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid var(--primary-glow);
  color: var(--primary-glow);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn:hover {
  background: var(--primary-glow);
  color: var(--bg-color);
  box-shadow: 0 0 15px var(--primary-glow);
}

.btn-primary {
  background: var(--primary-glow);
  color: var(--bg-color);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.btn-primary:hover {
  box-shadow: 0 0 20px var(--primary-glow);
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5), 0 0 15px var(--border-glow);
}

/* Inputs */
input, textarea {
  background: rgba(15, 52, 96, 0.3);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  padding: 1rem;
  border-radius: 8px;
  width: 100%;
  transition: all 0.3s ease;
  outline: none;
}

input:focus, textarea:focus {
  border-color: var(--primary-glow);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(0, 240, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 240, 255, 0); }
}

@keyframes glow {
  from { text-shadow: 0 0 10px rgba(0, 240, 255, 0.5); }
  to { text-shadow: 0 0 20px var(--primary-glow), 0 0 30px var(--primary-glow); }
}

.fade-in {
  animation: fadeIn 1s ease forwards;
}

.slide-up {
  opacity: 0;
  animation: slideUp 0.8s ease forwards;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
}