/**
 * Knitnox Neumorphic Design System
 * Version: 1.0.0
 * 
 * A comprehensive neumorphic (soft UI) design library for building
 * consistent, beautiful interfaces across the Knitnox ecosystem.
 * 
 * Usage: Include this CSS file in your HTML:
 * <link rel="stylesheet" href="path/to/neumorphic.css">
 */

/* ============================================
   CSS VARIABLES (Theme Configuration)
   ============================================ */
:root {
  /* Primary Colors */
  --neumorph-bg: #e6e9ef;
  --neumorph-light: #ffffff;
  --neumorph-dark: #c2c8d0;
  --neumorph-text: #2a2f3a;
  
  /* Accent Colors */
  --neumorph-accent-blue: #5a8dee;
  --neumorph-accent-red: #ff6b6b;
  --neumorph-accent-green: #51cf66;
  --neumorph-accent-orange: #ffa500;
  
  /* Shadow Configuration */
  --neumorph-shadow-raised: 6px 6px 12px var(--neumorph-dark), 
                            -6px -6px 12px var(--neumorph-light);
  --neumorph-shadow-pressed: inset 4px 4px 8px var(--neumorph-dark), 
                             inset -4px -4px 8px var(--neumorph-light);
  --neumorph-shadow-large: 10px 10px 20px var(--neumorph-dark), 
                           -10px -10px 20px var(--neumorph-light);
  --neumorph-shadow-small: 4px 4px 8px var(--neumorph-dark), 
                           -4px -4px 8px var(--neumorph-light);
  
  /* Border Radius */
  --neumorph-radius-sm: 8px;
  --neumorph-radius-md: 12px;
  --neumorph-radius-lg: 16px;
  --neumorph-radius-xl: 20px;
  
  /* Spacing */
  --neumorph-spacing-xs: 4px;
  --neumorph-spacing-sm: 8px;
  --neumorph-spacing-md: 12px;
  --neumorph-spacing-lg: 16px;
  --neumorph-spacing-xl: 20px;
  --neumorph-spacing-2xl: 24px;
  
  /* Transitions */
  --neumorph-transition-fast: 0.15s ease;
  --neumorph-transition-normal: 0.2s ease;
  --neumorph-transition-slow: 0.3s ease;
}

/* ============================================
   BASE STYLES
   ============================================ */
.neumorph-body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--neumorph-bg);
  color: var(--neumorph-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   CARDS
   ============================================ */

/* Basic raised card */
.neumorph-card {
  background: var(--neumorph-bg);
  border-radius: var(--neumorph-radius-lg);
  box-shadow: var(--neumorph-shadow-raised);
  padding: var(--neumorph-spacing-xl);
  transition: var(--neumorph-transition-normal);
}

/* Card with hover effect */
.neumorph-card-hover {
  background: var(--neumorph-bg);
  border-radius: var(--neumorph-radius-lg);
  box-shadow: var(--neumorph-shadow-raised);
  padding: var(--neumorph-spacing-xl);
  transition: var(--neumorph-transition-normal);
  cursor: pointer;
}

.neumorph-card-hover:hover {
  box-shadow: 8px 8px 16px var(--neumorph-dark), 
              -8px -8px 16px var(--neumorph-light);
}

.neumorph-card-hover:active {
  box-shadow: var(--neumorph-shadow-pressed);
}

/* Large card (for headers, featured content) */
.neumorph-card-large {
  background: var(--neumorph-bg);
  border-radius: var(--neumorph-radius-xl);
  box-shadow: var(--neumorph-shadow-large);
  padding: var(--neumorph-spacing-2xl);
}

/* Small card */
.neumorph-card-small {
  background: var(--neumorph-bg);
  border-radius: var(--neumorph-radius-md);
  box-shadow: var(--neumorph-shadow-small);
  padding: var(--neumorph-spacing-md);
}

/* ============================================
   BUTTONS
   ============================================ */

/* Base button */
.neumorph-btn {
  padding: 14px 24px;
  border-radius: var(--neumorph-radius-md);
  background: var(--neumorph-bg);
  box-shadow: var(--neumorph-shadow-raised);
  border: none;
  font-weight: 600;
  color: var(--neumorph-text);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--neumorph-transition-normal);
  font-family: inherit;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.neumorph-btn:hover {
  box-shadow: 8px 8px 16px var(--neumorph-dark), 
              -8px -8px 16px var(--neumorph-light);
}

.neumorph-btn:active {
  box-shadow: var(--neumorph-shadow-pressed);
}

.neumorph-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Small button */
.neumorph-btn-sm {
  padding: 10px 18px;
  font-size: 0.9rem;
}

/* Large button */
.neumorph-btn-lg {
  padding: 18px 32px;
  font-size: 1.1rem;
}

/* Accent button (blue) */
.neumorph-btn-accent {
  background: linear-gradient(145deg, var(--neumorph-accent-blue), #4a7bde);
  color: white;
}

.neumorph-btn-accent:active {
  box-shadow: inset 4px 4px 8px rgba(0,0,0,0.2),
              inset -2px -2px 6px rgba(255,255,255,0.1);
}

/* ============================================
   INPUT FIELDS
   ============================================ */

/* Text input */
.neumorph-input {
  padding: 14px 18px;
  border-radius: var(--neumorph-radius-md);
  background: var(--neumorph-bg);
  box-shadow: var(--neumorph-shadow-pressed);
  border: none;
  width: 100%;
  font-size: 1rem;
  color: var(--neumorph-text);
  font-family: inherit;
  outline: none;
  transition: var(--neumorph-transition-normal);
}

.neumorph-input:focus {
  box-shadow: inset 6px 6px 10px var(--neumorph-dark),
              inset -6px -6px 10px var(--neumorph-light);
}

.neumorph-input::placeholder {
  color: #999;
}

/* Textarea */
.neumorph-textarea {
  padding: 14px 18px;
  border-radius: var(--neumorph-radius-md);
  background: var(--neumorph-bg);
  box-shadow: var(--neumorph-shadow-pressed);
  border: none;
  width: 100%;
  font-size: 1rem;
  color: var(--neumorph-text);
  font-family: inherit;
  outline: none;
  resize: vertical;
  min-height: 100px;
}

/* Select dropdown */
.neumorph-select {
  padding: 14px 18px;
  border-radius: var(--neumorph-radius-md);
  background: var(--neumorph-bg);
  box-shadow: var(--neumorph-shadow-pressed);
  border: none;
  width: 100%;
  font-size: 1rem;
  color: var(--neumorph-text);
  font-family: inherit;
  outline: none;
  cursor: pointer;
}

/* ============================================
   CONTAINERS
   ============================================ */

/* Main container with max-width */
.neumorph-container {
  max-width: 420px;
  padding: 20px;
  width: 100%;
  margin: 0 auto;
}

@media (min-width: 1024px) {
  .neumorph-container {
    width: 50vw;
    max-width: 1200px;
  }
}

/* Flex container */
.neumorph-flex {
  display: flex;
  gap: var(--neumorph-spacing-lg);
}

.neumorph-flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--neumorph-spacing-lg);
}

.neumorph-flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--neumorph-spacing-lg);
}

/* Grid container */
.neumorph-grid {
  display: grid;
  gap: var(--neumorph-spacing-lg);
}

.neumorph-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--neumorph-spacing-lg);
}

.neumorph-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--neumorph-spacing-lg);
}

.neumorph-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--neumorph-spacing-lg);
}

/* Responsive grid for apps */
.neumorph-grid-responsive {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--neumorph-spacing-lg);
}

@media (min-width: 1024px) {
  .neumorph-grid-responsive {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

.neumorph-heading {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  color: var(--neumorph-text);
  margin: 0;
}

.neumorph-heading-xl {
  font-size: 2.6rem;
  letter-spacing: 4px;
}

.neumorph-heading-lg {
  font-size: 2rem;
  letter-spacing: 2px;
}

.neumorph-heading-md {
  font-size: 1.6rem;
  letter-spacing: 1px;
}

.neumorph-heading-sm {
  font-size: 1.2rem;
  letter-spacing: 0.5px;
}

.neumorph-text {
  color: #666;
  line-height: 1.6;
  margin: 0;
}

.neumorph-text-small {
  font-size: 0.85rem;
  color: #888;
}

/* ============================================
   IMAGES & ICONS
   ============================================ */

.neumorph-icon {
  border-radius: var(--neumorph-radius-md);
  background: var(--neumorph-bg);
  box-shadow: var(--neumorph-shadow-raised);
  padding: 12px;
}

.neumorph-icon-sm {
  width: 40px;
  height: 40px;
}

.neumorph-icon-md {
  width: 60px;
  height: 60px;
}

.neumorph-icon-lg {
  width: 90px;
  height: 90px;
  padding: 18px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

/* Spacing utilities */
.neumorph-mt-sm { margin-top: var(--neumorph-spacing-sm); }
.neumorph-mt-md { margin-top: var(--neumorph-spacing-md); }
.neumorph-mt-lg { margin-top: var(--neumorph-spacing-lg); }
.neumorph-mt-xl { margin-top: var(--neumorph-spacing-xl); }
.neumorph-mt-2xl { margin-top: var(--neumorph-spacing-2xl); }

.neumorph-mb-sm { margin-bottom: var(--neumorph-spacing-sm); }
.neumorph-mb-md { margin-bottom: var(--neumorph-spacing-md); }
.neumorph-mb-lg { margin-bottom: var(--neumorph-spacing-lg); }
.neumorph-mb-xl { margin-bottom: var(--neumorph-spacing-xl); }
.neumorph-mb-2xl { margin-bottom: var(--neumorph-spacing-2xl); }

.neumorph-p-sm { padding: var(--neumorph-spacing-sm); }
.neumorph-p-md { padding: var(--neumorph-spacing-md); }
.neumorph-p-lg { padding: var(--neumorph-spacing-lg); }
.neumorph-p-xl { padding: var(--neumorph-spacing-xl); }
.neumorph-p-2xl { padding: var(--neumorph-spacing-2xl); }

/* Text alignment */
.neumorph-text-center { text-align: center; }
.neumorph-text-left { text-align: left; }
.neumorph-text-right { text-align: right; }

/* Display utilities */
.neumorph-block { display: block; }
.neumorph-inline-block { display: inline-block; }
.neumorph-hidden { display: none; }

/* Width utilities */
.neumorph-w-full { width: 100%; }
.neumorph-w-half { width: 50%; }

/* Cursor utilities */
.neumorph-cursor-pointer { cursor: pointer; }

/* Transition utilities */
.neumorph-transition { transition: var(--neumorph-transition-normal); }
.neumorph-transition-fast { transition: var(--neumorph-transition-fast); }
.neumorph-transition-slow { transition: var(--neumorph-transition-slow); }

/* ============================================
   SPECIAL COMPONENTS
   ============================================ */

/* Loading spinner */
.neumorph-spinner {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--neumorph-bg);
  box-shadow: var(--neumorph-shadow-pressed);
  position: relative;
  animation: neumorph-spin 1s linear infinite;
}

.neumorph-spinner::before {
  content: '';
  position: absolute;
  top: 5px;
  left: 5px;
  right: 5px;
  bottom: 5px;
  border-radius: 50%;
  background: var(--neumorph-bg);
  box-shadow: var(--neumorph-shadow-raised);
}

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

/* Badge */
.neumorph-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--neumorph-bg);
  box-shadow: var(--neumorph-shadow-small);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Divider */
.neumorph-divider {
  height: 2px;
  background: linear-gradient(90deg, 
    transparent, 
    var(--neumorph-dark) 20%, 
    var(--neumorph-dark) 80%, 
    transparent);
  margin: var(--neumorph-spacing-xl) 0;
  border: none;
}

/* Progress bar */
.neumorph-progress {
  width: 100%;
  height: 20px;
  border-radius: 10px;
  background: var(--neumorph-bg);
  box-shadow: var(--neumorph-shadow-pressed);
  overflow: hidden;
  position: relative;
}

.neumorph-progress-bar {
  height: 100%;
  background: linear-gradient(145deg, var(--neumorph-accent-blue), #4a7bde);
  border-radius: 10px;
  transition: width var(--neumorph-transition-slow);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes neumorph-fade-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.neumorph-fade-in {
  animation: neumorph-fade-in 0.3s ease-out;
}

@keyframes neumorph-slide-in {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

.neumorph-slide-in {
  animation: neumorph-slide-in 0.3s ease-out;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.neumorph-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Focus styles for accessibility */
.neumorph-btn:focus-visible,
.neumorph-input:focus-visible {
  outline: 2px solid var(--neumorph-accent-blue);
  outline-offset: 2px;
}