:root {
  /* Dark Theme (Default) */
  --primary-bg: #0F0F23;
  --secondary-bg: #1A1A2E;
  --accent-bg: #16213E;
  --surface-bg: #252845;

  --neon-blue: #007bff;
  --neon-purple: #8B5CF6;
  --neon-pink: #F472B6;
  --neon-green: #10B981;
  --neon-cyan: #06B6D4;
  --neon-yellow: #F59E0B;

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

  --gradient-primary: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
  --gradient-secondary: linear-gradient(135deg, var(--neon-pink), var(--neon-cyan));
  --gradient-success: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
  --gradient-warning: linear-gradient(135deg, var(--neon-yellow), var(--neon-pink));

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
  --shadow-neon: 0 0 20px rgba(255, 0, 170, 0.3);
}

/* Light Theme */
[data-theme="light"] {
  --primary-bg: #F8FAFC;
  --secondary-bg: #FFFFFF;
  --accent-bg: #F1F5F9;
  --surface-bg: #E2E8F0;

  --neon-blue: #007bff;
  --neon-purple: #8B5CF6;
  --neon-pink: #F472B6;
  --neon-green: #10B981;
  --neon-cyan: #06B6D4;
  --neon-yellow: #F59E0B;

  --text-primary: #1E293B;
  --text-secondary: #64748B;
  --text-muted: #94A3B8;

  --glass-bg: rgba(255, 255, 255, 0.95);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
  --shadow-neon: 0 0 20px rgba(255, 0, 170, 0.2);
}

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

body {
  font-family: 'Roboto', sans-serif;
  background: var(--primary-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

body:not([data-theme="light"]) {
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(244, 114, 182, 0.1) 0%, transparent 50%);
  background-attachment: fixed;
}

[data-theme="light"] {
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(255, 0, 170, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(244, 114, 182, 0.03) 0%, transparent 50%);
  background-attachment: fixed;
}


::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--secondary-bg);
  border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--neon-blue), var(--neon-purple));
  border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--neon-purple), var(--neon-pink));
}


.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

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

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Animations */
@keyframes pulse-neon {
  0%, 100% { box-shadow: 0 0 5px var(--neon-blue); }
  50% { box-shadow: 0 0 20px var(--neon-blue), 0 0 30px var(--neon-blue); }
}

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

@keyframes slide-in {
  from { 
    opacity: 0; 
    transform: translateX(-20px); 
  }
  to { 
    opacity: 1; 
    transform: translateX(0); 
  }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}


.notifications-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 10000;
  pointer-events: none;
}

.notification {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-sm);
  transform: translateX(100%);
  opacity: 0;
  transition: all var(--transition-normal);
  pointer-events: auto;
  max-width: 300px;
  box-shadow: var(--shadow-lg);
}

.notification.show {
  transform: translateX(0);
  opacity: 1;
}

.notification.success {
  border-left: 4px solid var(--neon-green);
}

.notification.error {
  border-left: 4px solid #EF4444;
}

.notification.warning {
  border-left: 4px solid var(--neon-yellow);
}

.notification.info {
  border-left: 4px solid var(--neon-blue);
}

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

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--glass-border);
  border-top: 3px solid var(--neon-blue);
  border-radius: 50%;
  animation: loading-spin 1s linear infinite;
}


.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-backdrop.show {
  opacity: 1;
  visibility: visible;
}


@media (max-width: 768px) {
  :root {
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
  }

  .notifications-container {
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    left: var(--spacing-sm);
  }

  .notification {
    max-width: none;
  }
}