:root {
  /* Color Palette - Premium Gradients */
  --primary-gradient: linear-gradient(135deg, #72dcff 0%, #a68cff 100%);
  --secondary-gradient: linear-gradient(135deg, #a68cff 0%, #591adc 100%);
  --success-gradient: linear-gradient(135deg, #81ecff 0%, #00d2ff 100%);
  --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --danger-gradient: linear-gradient(135deg, #ff716c 0%, #d7383b 100%);

  /* Solid Colors */
  --primary: #72dcff;
  --primary-dark: #00d2ff;
  --secondary: #a68cff;
  --success: #81ecff;
  --warning: #fee140;
  --danger: #ff716c;

  /* Neutral Colors */
  --bg-primary: #090e18;
  --bg-secondary: #0e131e;
  --bg-tertiary: #141a26;
  --bg-card: rgba(31, 38, 52, 0.6);
  --bg-card-hover: rgba(31, 38, 52, 0.8);

  /* Text Colors */
  --text-primary: #e4e8f7;
  --text-secondary: #a6abb9;
  --text-muted: #505561;

  /* Border & Shadow */
  --border-color: rgba(67, 72, 84, 0.5);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --glow: 0 0 20px rgba(114, 220, 255, 0.3);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 400ms ease-in-out;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Animated Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 50%, rgba(114, 220, 255, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(166, 140, 255, 0.05) 0%, transparent 50%);
  z-index: -1;
  animation: backgroundPulse 10s ease-in-out infinite;
}

@keyframes backgroundPulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.8;
  }
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  gap: var(--spacing-md);
}

.loader {
  width: 60px;
  height: 60px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-screen p {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  font-weight: 500;
}

/* Navbar */
.navbar {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.navbar-brand h1 {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.25rem;
}

.brand-tagline {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.navbar-menu {
  display: flex;
  gap: var(--spacing-sm);
  flex: 1;
  justify-content: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: all var(--transition-base);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.nav-link.active {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: var(--primary-gradient);
  border-radius: 2px;
}

.nav-icon {
  font-size: var(--font-size-lg);
}

/* Page Content */
.page-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
  min-height: calc(100vh - 100px);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--text-muted);
}

.text-primary {
  color: var(--primary);
}

.text-success {
  color: var(--success);
}

.text-warning {
  color: var(--warning);
}

.text-danger {
  color: var(--danger);
}

.mt-1 {
  margin-top: var(--spacing-xs);
}

.mt-2 {
  margin-top: var(--spacing-sm);
}

.mt-3 {
  margin-top: var(--spacing-md);
}

.mt-4 {
  margin-top: var(--spacing-lg);
}

.mb-1 {
  margin-bottom: var(--spacing-xs);
}

.mb-2 {
  margin-bottom: var(--spacing-sm);
}

.mb-3 {
  margin-bottom: var(--spacing-md);
}

.mb-4 {
  margin-bottom: var(--spacing-lg);
}

.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--spacing-sm);
}

.gap-3 {
  gap: var(--spacing-md);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

.slide-in-right {
  animation: slideInRight 0.5s ease-out;
}

.scale-in {
  animation: scaleIn 0.3s ease-out;
}

/* Responsive */
/* Responsive Utilities */
.mobile-only {
  display: none !important;
}

.desktop-only {
  display: flex !important;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  cursor: pointer;
  background: none;
  border: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  z-index: 101;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Hamburger Animation */
.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Styles */
@media (max-width: 768px) {
  .mobile-only {
    display: flex !important;
  }

  .desktop-only {
    display: none !important;
  }

  .hamburger {
    display: flex;
  }

  .navbar-container {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .navbar-menu {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-sm);
    animation: slideDown 0.3s ease-out;
  }

  .navbar-menu.active {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    justify-content: flex-start;
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-link.active {
    background: var(--bg-card-hover);
    border-left: 3px solid var(--primary);
  }

  .page-content {
    padding: var(--spacing-md);
  }

  h1 {
    font-size: var(--font-size-3xl);
  }

  h2 {
    font-size: var(--font-size-2xl);
  }

  h3 {
    font-size: var(--font-size-xl);
  }
}