/* AlphaStream AI Design System - Main CSS */

/* Import Inter font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* CSS Variables - AlphaStream AI Theme */
:root {
  /* Primary Colors */
  --color-primary-bg: #111827;        /* gray-900 */
  --color-surface: #1F2937;           /* gray-800 */
  --color-surface-light: #374151;     /* gray-700 */
  --color-surface-lighter: #4B5563;   /* gray-600 */
  --color-accent: #10B981;            /* green-500 */
  --color-secondary: #3B82F6;         /* blue-500 */
  
  /* Text Colors */
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #9CA3AF;    /* gray-400 */
  --color-text-muted: #6B7280;        /* gray-500 */
  --color-text-dark: #374151;         /* gray-700 */
  
  /* Border Colors */
  --color-border: #374151;            /* gray-700 */
  --color-border-light: #4B5563;      /* gray-600 */
  --color-border-accent: #10B981;     /* green-500 */
  
  /* Gradients */
  --gradient-primary: linear-gradient(90deg, #10B981, #3B82F6);
  --gradient-background: linear-gradient(135deg, #111827, #1F2937);
  --gradient-card: rgba(31, 41, 55, 0.5);
  
  /* Typography */
  --font-family: 'Inter', sans-serif;
  --font-size-hero: 3rem;             /* 48px */
  --font-size-heading: 2rem;          /* 32px */
  --font-size-subheading: 1.5rem;     /* 24px */
  --font-size-body: 1rem;             /* 16px */
  --font-size-small: 0.875rem;        /* 14px */
  
  /* Spacing */
  --spacing-xs: 0.25rem;              /* 4px */
  --spacing-sm: 0.5rem;               /* 8px */
  --spacing-md: 1rem;                 /* 16px */
  --spacing-lg: 1.5rem;               /* 24px */
  --spacing-xl: 2rem;                 /* 32px */
  --spacing-2xl: 3rem;                /* 48px */
  
  /* Border Radius */
  --radius-sm: 0.375rem;              /* 6px */
  --radius-md: 0.5rem;                /* 8px */
  --radius-lg: 0.75rem;               /* 12px */
  --radius-xl: 1rem;                  /* 16px */
  --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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 0 1px var(--color-accent);
  --shadow-glow-lg: 0 8px 32px rgba(16, 185, 129, 0.1);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Base Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-primary-bg);
  color: var(--color-text-secondary);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  /* Performance optimizations */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Optimize animations for performance */
* {
  will-change: auto;
}

.feature-card,
.tool-card,
.btn {
  will-change: transform;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

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

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

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

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

/* Glass Effect */
.glass-effect {
  background: rgba(17, 24, 39, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(55, 65, 81, 0.7);
}

/* Feature Card Component */
.feature-card {
  background: var(--gradient-card);
  border: 1px solid rgba(55, 65, 81, 0.7);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

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

/* Tool Card Component */
.tool-card {
  background: rgba(31, 41, 55, 0.5);
  border: 1px solid rgba(55, 65, 81, 0.7);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

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

/* Data Card Component */
.data-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
}

.data-card:hover {
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-md);
}

/* Chart Card Component */
.chart-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  min-height: 300px;
}

/* Control Card Component */
.control-card {
  background: var(--gradient-card);
  border: 1px solid rgba(55, 65, 81, 0.7);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  font-family: var(--font-family);
}

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

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-glow-lg);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-light);
  color: var(--color-text-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background: rgba(55, 65, 81, 0.3);
  color: var(--color-text-primary);
}

/* Status Indicators */
.status-indicator {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: var(--spacing-sm);
}

.status-open {
  background-color: var(--color-accent);
  box-shadow: 0 0 6px var(--color-accent);
}

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

.status-transitional {
  background-color: var(--color-secondary);
  box-shadow: 0 0 6px var(--color-secondary);
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

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

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

.flex {
  display: flex;
}

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

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

.justify-center {
  justify-content: center;
}

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

.space-y-4 > * + * {
  margin-top: var(--spacing-md);
}

.space-y-8 > * + * {
  margin-top: var(--spacing-xl);
}

.grid {
  display: grid;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.gap-4 {
  gap: var(--spacing-md);
}

.gap-6 {
  gap: var(--spacing-lg);
}

.gap-8 {
  gap: var(--spacing-xl);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .grid-cols-2,
  .grid-cols-3 {
    grid-template-columns: 1fr;
  }
  
  .feature-card,
  .tool-card {
    padding: var(--spacing-lg);
  }
  
  :root {
    --font-size-hero: 2rem;           /* 32px on mobile */
    --font-size-heading: 1.5rem;     /* 24px on mobile */
  }
  
  /* Mobile navigation improvements */
  #mobile-menu {
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(55, 65, 81, 0.7);
  }
  
  #mobile-menu a {
    min-height: 44px;
    display: flex;
    align-items: center;
    transition: all var(--transition-fast);
  }
  
  #mobile-menu a:active {
    background: rgba(16, 185, 129, 0.1);
    transform: scale(0.98);
  }
  
  /* Touch feedback for buttons */
  .btn:active {
    transform: scale(0.95);
  }
  
  /* Improved mobile forms */
  .filter-input,
  .filter-select {
    min-height: 44px;
    font-size: 16px; /* Prevents zoom on iOS */
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .feature-card,
  .tool-card {
    padding: var(--spacing-md);
  }
  
  /* Extra small screen optimizations */
  .tool-title {
    font-size: 1.5rem;
  }
  
  .breadcrumb {
    font-size: 0.75rem;
  }
  
  /* Stack filter controls vertically on very small screens */
  .filter-controls {
    gap: var(--spacing-sm);
  }
  
  .filter-group {
    width: 100%;
  }
  
  .filter-input,
  .filter-select {
    width: 100%;
  }
}

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

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--color-accent);
  border-top: 2px solid transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Error States */
.error {
  color: #EF4444;
  border-color: #EF4444;
}

.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #EF4444;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin: var(--spacing-md) 0;
}

/* Success States */
.success {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.success-message {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--color-accent);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin: var(--spacing-md) 0;
}
/* Tool
s Dropdown Styles */
.tools-dropdown {
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(55, 65, 81, 0.7);
    border-radius: 0.75rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    z-index: 50;
}

.tools-dropdown-item {
    display: block;
    padding: 0.75rem 1rem;
    color: #D1D5DB;
    text-decoration: none;
    transition: all 0.2s ease;
    border-radius: 0.5rem;
    margin: 0.25rem;
}

.tools-dropdown-item:hover {
    background: rgba(16, 185, 129, 0.1);
    color: #10B981;
    transform: translateX(4px);
}

.tools-dropdown-item .font-medium {
    color: #F9FAFB;
    font-weight: 600;
}

.tools-dropdown-item:hover .font-medium {
    color: #10B981;
}