/* ============================================
   AETHERIUM UI v1.0
   Premium Futuristic CSS Framework
   Cyberpunk + Glassmorphism + Neon Aesthetic
   ============================================ */

/* --------------------------------------------
   RESET & BASE
   -------------------------------------------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  background-color: var(--bg-dark);
  color: white;
  background-image: 
    radial-gradient(circle at 50% 50%, rgba(0, 243, 255, 0.05) 0%, transparent 50%);
  min-height: 100vh;
  overflow-x: hidden;
}

/* --------------------------------------------
   CSS VARIABLES (Easy Customization)
   -------------------------------------------- */
:root {
  /* Color System - Neon + Cyberpunk */
  --neon-cyan: #00f3ff;
  --neon-magenta: #ff00e6;
  --neon-purple: #b100ff;
  --neon-yellow: #ffea00;
  --neon-green: #00ff88;
  
  /* Glassmorphism Colors */
  --glass-bg: rgba(10, 20, 30, 0.45);
  --glass-border: rgba(0, 243, 255, 0.25);
  --glass-blur: 12px;
  
  /* Backgrounds */
  --bg-dark: #050505;
  --bg-deep: #0a0a0a;
  --bg-card: rgba(15, 25, 45, 0.7);
  --bg-elevated: rgba(20, 30, 55, 0.85);
  
  /* Text Colors */
  --text-primary: #e8f0ff;
  --text-secondary: #9ba9c9;
  --text-muted: #6a7894;
  
  /* Shadows & Glows */
  --glow-sm: 0 0 8px rgba(0, 243, 255, 0.4);
  --glow-md: 0 0 16px rgba(0, 243, 255, 0.6);
  --glow-lg: 0 0 32px rgba(255, 0, 230, 0.5);
  --glow-xl: 0 0 64px rgba(0, 243, 255, 0.8);
  
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-elevated: 0 20px 40px rgba(0, 0, 0, 0.4);
  
  /* Spacing System */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Typography Scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  
  /* Transitions & Animations */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Layout */
  --container-max-width: 1280px;
  --header-height: 70px;
}

/* --------------------------------------------
   LAYOUT & UTILITIES
   -------------------------------------------- */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  width: 100%;
}

.grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.flex {
  display: flex;
}

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

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

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

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* --------------------------------------------
   COMPONENTS: BUTTONS
   -------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  letter-spacing: 0.5px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: var(--bg-dark);
  box-shadow: var(--glow-sm);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-md);
}

.btn-secondary {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}

.btn-secondary:hover {
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--neon-cyan);
  color: var(--neon-cyan);
}

.btn-outline:hover {
  background: rgba(0, 243, 255, 0.1);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

.btn-neon {
  background: transparent;
  border: 2px solid var(--neon-magenta);
  color: var(--neon-magenta);
  position: relative;
  animation: neonPulse 2s infinite;
}

.btn-neon:hover {
  background: rgba(255, 0, 230, 0.15);
  box-shadow: 0 0 24px rgba(255, 0, 230, 0.6);
  transform: scale(1.05);
}

/* --------------------------------------------
   COMPONENTS: CARDS
   -------------------------------------------- */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(var(--glass-blur));
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  border: 1px solid var(--glass-border);
  position: relative;
  overflow: hidden;
}

.card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid rgba(0, 243, 255, 0.2);
  box-shadow: var(--shadow-glass);
}

.card-solid {
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
}

.card-hover {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card-hover:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-elevated), var(--glow-md);
  border-color: var(--neon-cyan);
}

.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 243, 255, 0.1), transparent);
  transition: left 0.6s;
}

.card:hover::after {
  left: 100%;
}

/* --------------------------------------------
   COMPONENTS: NAVBAR
   -------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-md) 0;
  z-index: 1000;
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.navbar-brand {
  font-size: var(--text-2xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
}

.navbar-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.navbar-links a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.navbar-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
  transition: width var(--transition-base);
}

.navbar-links a:hover::after {
  width: 100%;
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: var(--text-2xl);
  cursor: pointer;
}

/* Responsive Navbar */
@media (max-width: 768px) {
  .navbar-toggle {
    display: block;
  }
  
  .navbar-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    padding: var(--space-xl);
    gap: var(--space-lg);
    border-bottom: 1px solid var(--glass-border);
  }
  
  .navbar-links.active {
    display: flex;
  }
}

/* --------------------------------------------
   COMPONENTS: FORMS
   -------------------------------------------- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.5px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(10, 20, 30, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-sm);
  background: rgba(10, 20, 30, 0.8);
}

.form-input:hover,
.form-textarea:hover {
  border-color: var(--neon-purple);
}

/* --------------------------------------------
   COMPONENTS: MODAL
   -------------------------------------------- */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: var(--bg-elevated);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
  max-width: 500px;
  width: 90%;
  position: relative;
  animation: slideUp 0.3s ease;
}

.modal-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: var(--text-xl);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.modal-close:hover {
  transform: rotate(90deg);
  color: var(--neon-cyan);
}

/* --------------------------------------------
   COMPONENTS: BADGES & TAGS
   -------------------------------------------- */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-lg);
  letter-spacing: 0.5px;
}

.badge-primary {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: var(--bg-dark);
}

.badge-neon {
  background: rgba(255, 0, 230, 0.2);
  border: 1px solid var(--neon-magenta);
  color: var(--neon-magenta);
  animation: neonPulse 2s infinite;
}

.badge-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.375rem 1rem;
  background: rgba(0, 243, 255, 0.1);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  color: var(--neon-cyan);
  transition: all var(--transition-fast);
}

.tag:hover {
  background: rgba(0, 243, 255, 0.2);
  transform: translateX(4px);
}

/* --------------------------------------------
   COMPONENTS: LOADING ANIMATIONS
   -------------------------------------------- */
.loader {
  display: inline-flex;
  gap: var(--space-sm);
}

.loader-dot {
  width: 8px;
  height: 8px;
  background: var(--neon-cyan);
  border-radius: 50%;
  animation: bounce 0.6s infinite alternate;
}

.loader-dot:nth-child(2) {
  animation-delay: 0.2s;
  background: var(--neon-magenta);
}

.loader-dot:nth-child(3) {
  animation-delay: 0.4s;
  background: var(--neon-purple);
}

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--neon-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loader-pulse {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  border-radius: 50%;
  animation: pulse 1.5s ease-in-out infinite;
}

/* --------------------------------------------
   SIGNATURE EFFECTS (Premium Features)
   -------------------------------------------- */

/* Signature 1: Cyber Glow Border */
.signature-glow-border {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
}

.signature-glow-border::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, var(--neon-cyan), var(--neon-magenta), var(--neon-purple), var(--neon-cyan));
  border-radius: var(--radius-xl);
  z-index: -1;
  animation: borderRotate 3s linear infinite;
  background-size: 300% 300%;
}

/* Signature 2: Holographic Shine */
.signature-holographic {
  position: relative;
  overflow: hidden;
}

.signature-holographic::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent,
    rgba(0, 243, 255, 0.1),
    rgba(255, 0, 230, 0.1),
    transparent
  );
  transform: rotate(45deg);
  animation: holographic 3s infinite;
}

/* Signature 3: Neon Data Stream */
.signature-data-stream {
  position: relative;
  overflow: hidden;
}

.signature-data-stream::after {
  content: '010011 101010 110100 001011';
  position: absolute;
  bottom: 10px;
  right: 10px;
  font-family: monospace;
  font-size: var(--text-xs);
  color: rgba(0, 243, 255, 0.3);
  animation: dataStream 4s linear infinite;
  white-space: nowrap;
}

/* --------------------------------------------
   CUSTOM SCROLLBAR (Futuristic)
   -------------------------------------------- */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
  border-left: 1px solid var(--glass-border);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  border-radius: var(--radius-lg);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--neon-magenta), var(--neon-cyan));
}

/* --------------------------------------------
   ANIMATED BACKGROUND (Subtle)
   -------------------------------------------- */
.animated-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.animated-bg::before {
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(0, 243, 255, 0.05), transparent 50%),
              radial-gradient(circle at 70% 60%, rgba(255, 0, 230, 0.05), transparent 50%);
  animation: bgFloat 20s ease-in-out infinite;
}

/* --------------------------------------------
   KEYFRAME ANIMATIONS
   -------------------------------------------- */
@keyframes neonPulse {
  0%, 100% {
    box-shadow: 0 0 8px rgba(255, 0, 230, 0.4);
    border-color: var(--neon-magenta);
  }
  50% {
    box-shadow: 0 0 24px rgba(255, 0, 230, 0.8);
    border-color: var(--neon-cyan);
  }
}

@keyframes bounce {
  from {
    transform: translateY(0);
    opacity: 0.5;
  }
  to {
    transform: translateY(-16px);
    opacity: 1;
  }
}

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.1);
    opacity: 1;
    box-shadow: 0 0 32px rgba(0, 243, 255, 0.6);
  }
}

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

@keyframes slideUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

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

@keyframes holographic {
  0% {
    transform: translateX(-100%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) rotate(45deg);
  }
}

@keyframes dataStream {
  0% {
    transform: translateX(100%);
    opacity: 0;
  }
  20% {
    opacity: 1;
  }
  80% {
    opacity: 1;
  }
  100% {
    transform: translateX(-200%);
    opacity: 0;
  }
}

@keyframes bgFloat {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(-2%, -2%) scale(1.05);
  }
  66% {
    transform: translate(2%, 2%) scale(0.95);
  }
}

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

/* Utility Animation Classes */
.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse-glow {
  animation: neonPulse 2s infinite;
}

.animate-spin-slow {
  animation: spin 3s linear infinite;
}

/* --------------------------------------------
   RESPONSIVE BREAKPOINTS
   -------------------------------------------- */
@media (max-width: 1200px) {
  :root {
    --container-max-width: 960px;
  }
}

@media (max-width: 768px) {
  :root {
    --space-2xl: 2rem;
    --space-3xl: 3rem;
    --text-4xl: 2rem;
  }
  
  .container {
    padding: 0 var(--space-lg);
  }
  
  .grid {
    gap: var(--space-md);
  }
  
  .btn {
    padding: 0.6rem 1.25rem;
    font-size: var(--text-sm);
  }
  
  .card {
    padding: var(--space-lg);
  }
}

@media (max-width: 480px) {
  :root {
    --text-3xl: 1.75rem;
    --text-2xl: 1.25rem;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
  
  .modal-content {
    padding: var(--space-lg);
    margin: var(--space-md);
  }
}

/* --------------------------------------------
   UTILITY CLASSES (Extra Polish)
   -------------------------------------------- */
.text-gradient {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.glass-effect {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
}

.neon-text {
  color: var(--neon-cyan);
  text-shadow: 0 0 8px rgba(0, 243, 255, 0.6);
}

.hover-lift {
  transition: transform var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
}

.hover-glow {
  transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
  box-shadow: var(--glow-md);
}

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

/* Will-change optimizations */
.btn,
.card,
.navbar-links a {
  will-change: transform;
}

/* Hardware acceleration */
.glass-effect,
.modal,
.navbar {
  transform: translateZ(0);
  backface-visibility: hidden;
}