/* ========================================
   TalkBuild Futuristic Theme
   Design System & Tokens
   ======================================== */

:root {
  /* Color Palette - Cyberpunk/Futuristic */
  --color-bg-primary: #030712;
  --color-bg-secondary: #0a0e1a;
  --color-bg-tertiary: #111827;
  --color-bg-card: rgba(17, 24, 39, 0.7);
  --color-bg-glass: rgba(17, 24, 39, 0.5);
  
  /* Accent Colors */
  --color-accent-cyan: #22d3ee;
  --color-accent-cyan-glow: rgba(34, 211, 238, 0.4);
  --color-accent-indigo: #818cf8;
  --color-accent-indigo-glow: rgba(129, 140, 248, 0.4);
  --color-accent-fuchsia: #e879f9;
  --color-accent-fuchsia-glow: rgba(232, 121, 249, 0.3);
  --color-accent-emerald: #34d399;
  --color-accent-emerald-glow: rgba(52, 211, 153, 0.3);
  
  /* Gradient Definitions */
  --gradient-primary: linear-gradient(135deg, #22d3ee 0%, #818cf8 100%);
  --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #0e7490 100%);
  --gradient-accent: linear-gradient(135deg, #e879f9 0%, #22d3ee 100%);
  --gradient-dark: linear-gradient(180deg, #0a0e1a 0%, #030712 100%);
  --gradient-glow: linear-gradient(135deg, rgba(34, 211, 238, 0.2) 0%, rgba(129, 140, 248, 0.2) 100%);
  
  /* Text Colors */
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;
  --text-muted: #64748b;
  
  /* Border Colors */
  --border-subtle: rgba(148, 163, 184, 0.1);
  --border-default: rgba(148, 163, 184, 0.2);
  --border-accent: rgba(34, 211, 238, 0.3);
  --border-glow: rgba(34, 211, 238, 0.5);
  
  /* Shadow Definitions */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --shadow-glow-cyan: 0 0 20px rgba(34, 211, 238, 0.3);
  --shadow-glow-indigo: 0 0 20px rgba(129, 140, 248, 0.3);
  --shadow-glow-fuchsia: 0 0 20px rgba(232, 121, 249, 0.3);
  
  /* Typography */
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  
  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ========================================
   Base Styles
   ======================================== */

*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  margin: 0;
  min-height: 100vh;
}

/* ========================================
   Scrollbar Styling
   ======================================== */

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

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-accent-cyan), var(--color-accent-indigo));
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--color-accent-indigo), var(--color-accent-fuchsia));
}

/* ========================================
   Utility Classes
   ======================================== */

/* Glass morphism effect */
.glass {
  background: var(--color-bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.glass-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
}

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

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

/* Glow effects */
.glow-cyan {
  box-shadow: var(--shadow-glow-cyan);
}

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

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

/* Card styles */
.futuristic-card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

.futuristic-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-2px);
}

/* Button styles */
.btn-primary {
  background: var(--gradient-secondary);
  color: var(--text-primary);
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-6);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-glow-cyan);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 0 30px rgba(34, 211, 238, 0.5);
  transform: translateY(-2px);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(1);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-6);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn-secondary:hover {
  border-color: var(--color-accent-cyan);
  background: rgba(34, 211, 238, 0.1);
}

/* Input styles */
.input-futuristic {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  padding: var(--space-3) var(--space-4);
  transition: all var(--transition-base);
}

.input-futuristic:focus {
  outline: none;
  border-color: var(--color-accent-cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1);
}

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

/* Badge styles */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-cyan {
  background: rgba(34, 211, 238, 0.15);
  color: var(--color-accent-cyan);
  border: 1px solid rgba(34, 211, 238, 0.3);
}

.badge-indigo {
  background: rgba(129, 140, 248, 0.15);
  color: var(--color-accent-indigo);
  border: 1px solid rgba(129, 140, 248, 0.3);
}

.badge-fuchsia {
  background: rgba(232, 121, 249, 0.15);
  color: var(--color-accent-fuchsia);
  border: 1px solid rgba(232, 121, 249, 0.3);
}

/* ========================================
   Animation Keyframes
   ======================================== */

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(34, 211, 238, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(34, 211, 238, 0.6);
  }
}

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

/* Animation Classes */
.animate-fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

.animate-fade-in-up {
  animation: fadeInUp var(--transition-slow) ease-out;
}

.animate-scale-in {
  animation: scaleIn var(--transition-base) ease-out;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

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

/* ========================================
   Background Effects
   ======================================== */

.bg-grid {
  background-image: 
    linear-gradient(to right, rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
}

.bg-radial-glow {
  background: 
    radial-gradient(circle at 20% 20%, rgba(34, 211, 238, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 60%, rgba(129, 140, 248, 0.18) 0%, transparent 45%);
}

/* ========================================
   Dialog/Modal Styles
   ======================================== */

.dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

.dialog-content {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl), var(--shadow-glow-cyan);
  max-width: 28rem;
  width: 90%;
  animation: scaleIn var(--transition-base) ease-out;
}

.dialog-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dialog-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.dialog-body {
  padding: var(--space-6);
  color: var(--text-secondary);
}

.dialog-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ========================================
   Loading States
   ======================================== */

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border-subtle);
  border-top-color: var(--color-accent-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-tertiary) 0%,
    var(--color-bg-secondary) 50%,
    var(--color-bg-tertiary) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* ========================================
   Responsive Utilities
   ======================================== */

@media (max-width: 768px) {
  :root {
    --space-16: 3rem;
    --space-20: 4rem;
  }
}