/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --color-primary: #00d4ff;
  --color-secondary: #ffd700;
  --color-accent: #ff6b6b;
  --color-background: #0a0a0a;
  --color-background-secondary: #1a1a1a;
  --color-background-tertiary: #2a2a2a;
  --color-text-primary: #ffffff;
  --color-text-secondary: #b3b3b3;
  --color-text-muted: #666666;
  --color-border: #333333;
  --color-overlay: rgba(0, 0, 0, 0.8);
  
  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;
  
  /* Font Sizes */
  --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: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  --font-size-7xl: 4.5rem;
  --font-size-8xl: 6rem;
  
  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;
  --spacing-32: 8rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
  --shadow-glow-secondary: 0 0 20px rgba(255, 215, 0, 0.3);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-spring: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --navbar-height: 80px;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* ===== CSS Reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family-primary);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Custom Cursor ===== */
.cursor {
  position: fixed;
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 50%;
  pointer-events: none;
  z-index: var(--z-tooltip);
  mix-blend-mode: difference;
  transition: transform 0.1s ease;
}

.cursor-trail {
  position: fixed;
  width: 8px;
  height: 8px;
  background: var(--color-secondary);
  border-radius: 50%;
  pointer-events: none;
  z-index: var(--z-tooltip);
  opacity: 0.6;
  transition: all 0.3s ease;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-6xl); }
h2 { font-size: var(--font-size-5xl); }
h3 { font-size: var(--font-size-4xl); }
h4 { font-size: var(--font-size-3xl); }
h5 { font-size: var(--font-size-2xl); }
h6 { font-size: var(--font-size-xl); }

p {
  margin-bottom: var(--spacing-4);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--color-secondary);
}

/* ===== Layout ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-4);
  }
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(30px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-normal);
  padding: var(--spacing-2) 0;
  animation: navbarSlideDown 0.8s ease-out;
}

.navbar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    rgba(0, 212, 255, 0.1) 0%, 
    rgba(255, 215, 0, 0.05) 50%, 
    rgba(255, 107, 107, 0.05) 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: -1;
}

.navbar.scrolled {
  background: rgba(10, 10, 10, 0.95);
  border-bottom-color: rgba(0, 212, 255, 0.2);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.05);
  padding: var(--spacing-1) 0;
}

.navbar.scrolled::before {
  opacity: 1;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-4) var(--spacing-6);
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
}

.nav-container::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(0, 212, 255, 0.3) 20%, 
    rgba(255, 215, 0, 0.3) 50%, 
    rgba(0, 212, 255, 0.3) 80%, 
    transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.navbar.scrolled .nav-container::after {
  opacity: 1;
}

.nav-logo {
  position: relative;
  z-index: 2;
}

.nav-logo .logo-link {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-black);
  color: var(--color-text-primary);
  letter-spacing: 3px;
  transition: all var(--transition-normal);
  position: relative;
  text-decoration: none;
  display: inline-block;
}

.nav-logo .logo-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: -1;
  border-radius: var(--radius-md);
  padding: var(--spacing-2) var(--spacing-4);
  margin: calc(-1 * var(--spacing-2)) calc(-1 * var(--spacing-4));
}

.nav-logo .logo-link:hover::before {
  opacity: 0.1;
}

.nav-logo .logo-link:hover {
  color: var(--color-primary);
  transform: translateY(-1px);
  text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.nav-menu {
  display: flex;
  align-items: center;
  position: relative;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-2);
  background: rgba(26, 26, 26, 0.6);
  padding: var(--spacing-2);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  position: relative;
}

.nav-list::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    rgba(0, 212, 255, 0.1), 
    rgba(255, 215, 0, 0.05));
  border-radius: var(--radius-full);
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: -1;
}

.nav-list:hover::before {
  opacity: 1;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: all var(--transition-normal);
  position: relative;
  padding: var(--spacing-3) var(--spacing-5);
  border-radius: var(--radius-full);
  text-decoration: none;
  display: block;
  font-size: var(--font-size-sm);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: -1;
  border-radius: var(--radius-full);
  transform: scale(0.8);
}

.nav-link:hover::before,
.nav-link.active::before {
  opacity: 0.15;
  transform: scale(1);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-primary);
  transform: translateY(-1px);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 6px;
  padding: var(--spacing-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  position: relative;
  z-index: 3;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

.nav-toggle .bar {
  width: 28px;
  height: 3px;
  background: var(--color-text-primary);
  transition: all var(--transition-normal);
  border-radius: var(--radius-full);
  position: relative;
}

.nav-toggle .bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: opacity var(--transition-normal);
  border-radius: var(--radius-full);
}

.nav-toggle:hover .bar::before {
  opacity: 1;
}

/* Desktop Navigation - Hide hamburger menu */
@media (min-width: 769px) {
  .nav-toggle {
    display: none !important;
  }
}

/* Mobile Navigation - Keep navbar visible */
@media (max-width: 768px) {
  .navbar {
    display: block;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-2) 0;
  }
  
  .navbar .nav-container {
    justify-content: center;
    padding: 0 var(--spacing-4);
  }
  
  .navbar .nav-logo {
    display: block;
  }
  
  .navbar .nav-list {
    display: none;
  }
  
  .nav-menu .nav-list {
    display: flex !important;
    opacity: 1 !important;
    transform: translateY(0) !important;
  }
  
  .nav-menu .nav-item {
    opacity: 1 !important;
    transform: translateX(0) !important;
  }
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    position: fixed;
    top: calc(var(--navbar-height) + var(--spacing-4));
    left: 50%;
    transform: translateX(-50%);
    z-index: 1002;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3);
    box-shadow: 
      0 8px 32px rgba(0, 0, 0, 0.3),
      0 0 0 1px rgba(255, 255, 255, 0.05),
      0 0 20px rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
    animation: floatUp 3s ease-in-out infinite;
  }
  
  .nav-toggle:hover {
    background: rgba(10, 10, 10, 0.95);
    box-shadow: 
      0 12px 40px rgba(0, 0, 0, 0.4),
      0 0 0 1px rgba(255, 255, 255, 0.1),
      0 0 30px rgba(0, 212, 255, 0.2);
    transform: translateX(-50%) translateY(-2px) scale(1.05);
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(50px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 1025;
    overflow: hidden;
    margin: 0;
    padding: 0;
  }
  
  .nav-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
      radial-gradient(circle at 20% 20%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
      radial-gradient(circle at 80% 80%, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
      radial-gradient(circle at 50% 50%, rgba(255, 107, 107, 0.05) 0%, transparent 70%);
    z-index: -1;
    animation: gradientShift 8s ease-in-out infinite;
  }
  
  .nav-menu::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
      linear-gradient(45deg, transparent 30%, rgba(0, 212, 255, 0.02) 50%, transparent 70%);
    animation: shimmer 3s ease-in-out infinite;
    z-index: -1;
  }
  
  .nav-menu.active {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
    animation: menuSlideIn 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    pointer-events: all;
  }
  
  .nav-menu.active::before {
    animation-play-state: running;
  }
  
  .nav-list {
    flex-direction: column;
    gap: var(--spacing-4);
    width: auto;
    background: rgba(26, 26, 26, 0.8);
    padding: var(--spacing-8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    backdrop-filter: blur(20px);
    position: relative;
    transform: translateY(50px);
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.2s;
    box-shadow: 
      0 8px 32px rgba(0, 0, 0, 0.3),
      0 0 0 1px rgba(255, 255, 255, 0.05);
  }
  
  .nav-menu.active .nav-list {
    transform: translateY(0);
    opacity: 1;
  }
  
  .nav-list::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
      rgba(0, 212, 255, 0.05), 
      rgba(255, 215, 0, 0.03));
    border-radius: var(--radius-2xl);
    z-index: -1;
  }
  
  .nav-item {
    position: relative;
    transform: translateX(100px);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: block;
  }
  
  .nav-menu.active .nav-item {
    transform: translateX(0);
    opacity: 1;
    animation: navItemSlideIn 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
  }
  
  .nav-menu.active .nav-item:nth-child(1) { transition-delay: 0.3s; }
  .nav-menu.active .nav-item:nth-child(2) { transition-delay: 0.4s; }
  .nav-menu.active .nav-item:nth-child(3) { transition-delay: 0.5s; }
  .nav-menu.active .nav-item:nth-child(4) { transition-delay: 0.6s; }
  
  .nav-link {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    padding: var(--spacing-6) var(--spacing-12);
    text-align: center;
    min-width: 280px;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: block;
    color: var(--color-text-primary);
    text-decoration: none;
  }
  
  .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: -1;
    border-radius: var(--radius-xl);
  }
  
  .nav-link::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: -1;
    border-radius: 50%;
  }
  
  .nav-link:hover::before {
    opacity: 0.15;
    transform: translateY(0);
  }
  
  .nav-link:hover::after {
    width: 200px;
    height: 200px;
  }
  
  .nav-link:hover,
  .nav-link.active {
    color: var(--color-text-primary);
    transform: translateY(-4px) scale(1.02);
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
  }
  
  .nav-link.active::before {
    opacity: 0.2;
    transform: translateY(0);
  }
  
  /* Enhanced Hamburger Menu */
  .nav-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-xl);
    z-index: -1;
  }
  
  .nav-toggle:hover::before {
    opacity: 0.1;
  }
  
  .nav-toggle.active {
    background: rgba(10, 10, 10, 0.98);
    box-shadow: 
      0 12px 40px rgba(0, 0, 0, 0.5),
      0 0 0 1px rgba(0, 212, 255, 0.3),
      0 0 40px rgba(0, 212, 255, 0.3);
    transform: translateX(-50%) translateY(-4px) scale(1.1);
  }
  
  .nav-toggle.active::before {
    opacity: 0.2;
  }
  
  .nav-toggle .bar {
    width: 32px;
    height: 4px;
    background: var(--color-text-primary);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-radius: var(--radius-full);
    position: relative;
    transform-origin: center;
  }
  
  .nav-toggle .bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-full);
  }
  
  .nav-toggle:hover .bar::before {
    opacity: 1;
  }
  
  .nav-toggle.active .bar::before {
    opacity: 1;
  }
  
  /* Hamburger Animation States */
  .nav-toggle.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  }
  
  .nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
    transform: translateX(-30px) scale(0);
  }
  
  .nav-toggle.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  }
  
  /* Mobile Menu Close Button */
  .nav-menu-close {
    position: absolute;
    top: var(--spacing-8);
    right: var(--spacing-8);
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1003;
  }
  
  .nav-menu-close::before,
  .nav-menu-close::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: var(--radius-full);
    transition: all 0.3s ease;
  }
  
  .nav-menu-close::before {
    transform: rotate(45deg);
  }
  
  .nav-menu-close::after {
    transform: rotate(-45deg);
  }
  
  .nav-menu-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
  }
  
  .nav-menu-close:hover::before,
  .nav-menu-close:hover::after {
    background: var(--color-primary);
  }
}

/* ===== Buttons ===== */
.cta-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4) var(--spacing-8);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  background: transparent;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
  cursor: pointer;
  overflow: hidden;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.cta-button.primary {
  background: var(--color-primary);
  color: var(--color-background);
}

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

.cta-button.secondary:hover {
  background: var(--color-secondary);
  color: var(--color-background);
}

.cta-button .button-bg {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--color-secondary);
  transition: left var(--transition-normal);
  z-index: -1;
}

.cta-button:hover .button-bg {
  left: 0;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

/* ===== Cards ===== */
.card {
  background: var(--color-background-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  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);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.6);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes navbarSlideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes navLinkPulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes menuSlideIn {
  from {
    transform: translateX(100%) scale(0.8);
    opacity: 0;
  }
  to {
    transform: translateX(0) scale(1);
    opacity: 1;
  }
}

@keyframes navItemSlideIn {
  from {
    transform: translateX(100px) rotate(5deg);
    opacity: 0;
  }
  to {
    transform: translateX(0) rotate(0deg);
    opacity: 1;
  }
}

@keyframes rippleEffect {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 
      0 8px 32px rgba(0, 0, 0, 0.3),
      0 0 0 1px rgba(255, 255, 255, 0.05),
      0 0 20px rgba(0, 212, 255, 0.3);
  }
  50% {
    box-shadow: 
      0 8px 32px rgba(0, 0, 0, 0.3),
      0 0 0 1px rgba(255, 255, 255, 0.05),
      0 0 40px rgba(0, 212, 255, 0.6);
  }
}

@keyframes floatUp {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-8px);
  }
}

@keyframes centerPulse {
  0%, 100% {
    transform: translateX(-50%) scale(1);
  }
  50% {
    transform: translateX(-50%) scale(1.05);
  }
}

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

.fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

.fade-in-left {
  animation: fadeInLeft 0.6s ease forwards;
}

.fade-in-right {
  animation: fadeInRight 0.6s ease forwards;
}

.scale-in {
  animation: scaleIn 0.6s ease forwards;
}

.glow {
  animation: glow 2s ease-in-out infinite;
}

.float {
  animation: float 3s ease-in-out infinite;
}

/* ===== Responsive Typography ===== */
@media (max-width: 768px) {
  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); }
}

/* ===== Footer ===== */
.footer {
  background: var(--color-background-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-16) 0 var(--spacing-8);
  margin-top: var(--spacing-20);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-12);
}

.footer-brand .footer-logo {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-black);
  color: var(--color-text-primary);
  letter-spacing: 2px;
  margin-bottom: var(--spacing-4);
}

.footer-description {
  color: var(--color-text-secondary);
  max-width: 300px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-8);
}

.footer-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-4);
}

.footer-list {
  list-style: none;
}

.footer-list li {
  margin-bottom: var(--spacing-2);
}

.footer-link {
  color: var(--color-text-secondary);
  transition: color var(--transition-normal);
}

.footer-link:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-6);
  text-align: center;
}

.footer-copyright {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
  
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== Loading States ===== */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.skeleton {
  background: linear-gradient(90deg, var(--color-background-tertiary) 25%, var(--color-border) 50%, var(--color-background-tertiary) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ===== Accessibility ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== Focus States ===== */
button:focus,
a:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== Selection ===== */
::selection {
  background: var(--color-primary);
  color: var(--color-background);
}

::-moz-selection {
  background: var(--color-primary);
  color: var(--color-background);
}