/**
 * CultureSherpa Unified Design System
 * Version: 1.0.0
 * 
 * This file provides consistent design tokens across all CultureSherpa platforms:
 * - Astro Admin (culturesherpa.org/explore/admin)
 * - ThyOwn Ops Dashboard (culturesherpa.pages.dev)
 * - Flask Admin Backend (templates)
 * 
 * Usage: <link rel="stylesheet" href="/shared/css/design-system.css">
 */

/* ============================================
   DESIGN TOKENS (CSS Custom Properties)
   ============================================ */

:root {
  /* ========== BRAND COLORS ========== */
  --cs-primary-50: #faf5ff;
  --cs-primary-100: #f3e8ff;
  --cs-primary-200: #e9d5ff;
  --cs-primary-300: #d8b4fe;
  --cs-primary-400: #c084fc;
  --cs-primary-500: #a855f7;
  --cs-primary-600: #9333ea;
  --cs-primary-700: #7e22ce;
  --cs-primary-800: #6b21a8;
  --cs-primary-900: #581c87;
  
  /* Accent - Cyan for highlights */
  --cs-accent-400: #22d3ee;
  --cs-accent-500: #06b6d4;
  --cs-accent-600: #0891b2;
  
  /* Semantic Colors */
  --cs-success: #22c55e;
  --cs-success-light: #4ade80;
  --cs-warning: #f59e0b;
  --cs-warning-light: #fbbf24;
  --cs-danger: #ef4444;
  --cs-danger-light: #f87171;
  --cs-info: #3b82f6;
  --cs-info-light: #60a5fa;
  
  /* ========== BACKGROUNDS (Dark Mode Default) ========== */
  --cs-bg-base: #0f0a1f;
  --cs-bg-elevated: #1a1333;
  --cs-bg-card: rgba(255, 255, 255, 0.03);
  --cs-bg-card-hover: rgba(255, 255, 255, 0.06);
  --cs-bg-overlay: rgba(15, 10, 31, 0.95);
  --cs-bg-input: rgba(255, 255, 255, 0.05);
  --cs-bg-input-focus: rgba(255, 255, 255, 0.08);
  
  /* Gradient backgrounds */
  --cs-gradient-hero: linear-gradient(135deg, #1a1333 0%, #0f0a1f 50%, #0a0514 100%);
  --cs-gradient-card: linear-gradient(180deg, rgba(168, 85, 247, 0.08) 0%, rgba(168, 85, 247, 0.02) 100%);
  --cs-gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(168, 85, 247, 0.15) 0%, transparent 70%);
  --cs-gradient-accent: linear-gradient(135deg, var(--cs-primary-500) 0%, var(--cs-accent-500) 100%);
  
  /* ========== TEXT COLORS ========== */
  --cs-text-primary: #f8fafc;
  --cs-text-secondary: #cbd5e1;
  --cs-text-muted: #64748b;
  --cs-text-disabled: #475569;
  --cs-text-inverse: #0f172a;
  
  /* ========== BORDERS ========== */
  --cs-border-subtle: rgba(148, 163, 184, 0.1);
  --cs-border-default: rgba(168, 85, 247, 0.2);
  --cs-border-hover: rgba(168, 85, 247, 0.4);
  --cs-border-focus: rgba(168, 85, 247, 0.6);
  --cs-border-accent: rgba(34, 211, 238, 0.3);
  
  /* ========== SHADOWS ========== */
  --cs-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --cs-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --cs-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --cs-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --cs-shadow-glow: 0 0 20px rgba(168, 85, 247, 0.3);
  --cs-shadow-glow-accent: 0 0 20px rgba(34, 211, 238, 0.3);
  
  /* ========== TYPOGRAPHY ========== */
  --cs-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --cs-font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, 'Cascadia Code', monospace;
  
  /* Font Sizes (with line heights) */
  --cs-text-xs: 0.75rem;      /* 12px */
  --cs-text-sm: 0.875rem;     /* 14px */
  --cs-text-base: 1rem;       /* 16px */
  --cs-text-lg: 1.125rem;     /* 18px */
  --cs-text-xl: 1.25rem;      /* 20px */
  --cs-text-2xl: 1.5rem;      /* 24px */
  --cs-text-3xl: 1.875rem;    /* 30px */
  --cs-text-4xl: 2.25rem;     /* 36px */
  
  /* Font Weights */
  --cs-font-normal: 400;
  --cs-font-medium: 500;
  --cs-font-semibold: 600;
  --cs-font-bold: 700;
  
  /* Line Heights */
  --cs-leading-tight: 1.25;
  --cs-leading-normal: 1.5;
  --cs-leading-relaxed: 1.625;
  
  /* ========== SPACING ========== */
  --cs-space-1: 0.25rem;   /* 4px */
  --cs-space-2: 0.5rem;    /* 8px */
  --cs-space-3: 0.75rem;   /* 12px */
  --cs-space-4: 1rem;      /* 16px */
  --cs-space-5: 1.25rem;   /* 20px */
  --cs-space-6: 1.5rem;    /* 24px */
  --cs-space-8: 2rem;      /* 32px */
  --cs-space-10: 2.5rem;   /* 40px */
  --cs-space-12: 3rem;     /* 48px */
  --cs-space-16: 4rem;     /* 64px */
  
  /* ========== BORDER RADIUS ========== */
  --cs-radius-sm: 0.375rem;   /* 6px */
  --cs-radius-md: 0.5rem;     /* 8px */
  --cs-radius-lg: 0.75rem;    /* 12px */
  --cs-radius-xl: 1rem;       /* 16px */
  --cs-radius-2xl: 1.5rem;    /* 24px */
  --cs-radius-full: 9999px;
  
  /* ========== TRANSITIONS ========== */
  --cs-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --cs-transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --cs-transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --cs-transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* ========== Z-INDEX SCALE ========== */
  --cs-z-base: 0;
  --cs-z-dropdown: 1000;
  --cs-z-sticky: 1020;
  --cs-z-fixed: 1030;
  --cs-z-modal-backdrop: 1040;
  --cs-z-modal: 1050;
  --cs-z-popover: 1060;
  --cs-z-tooltip: 1070;
  --cs-z-toast: 1080;
}


/* ============================================
   BASE STYLES
   ============================================ */

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

html {
  font-family: var(--cs-font-sans);
  line-height: var(--cs-leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.cs-dark {
  background: var(--cs-bg-base);
  color: var(--cs-text-primary);
}


/* ============================================
   COMPONENT STYLES
   ============================================ */

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

.cs-card:hover {
  background: var(--cs-bg-card-hover);
  border-color: var(--cs-border-hover);
  box-shadow: var(--cs-shadow-glow);
  transform: translateY(-2px);
}

.cs-card-static {
  background: var(--cs-bg-card);
  border: 1px solid var(--cs-border-subtle);
  border-radius: var(--cs-radius-xl);
  padding: var(--cs-space-6);
}

.cs-card-gradient {
  background: var(--cs-gradient-card);
  border: 1px solid var(--cs-border-default);
  border-radius: var(--cs-radius-xl);
  padding: var(--cs-space-6);
  position: relative;
  overflow: hidden;
}

.cs-card-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cs-primary-500), transparent);
}


/* ---------- Buttons ---------- */
.cs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--cs-space-2);
  padding: var(--cs-space-3) var(--cs-space-5);
  font-size: var(--cs-text-sm);
  font-weight: var(--cs-font-medium);
  border-radius: var(--cs-radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--cs-transition-base);
  text-decoration: none;
  white-space: nowrap;
}

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

.cs-btn-primary {
  background: linear-gradient(135deg, var(--cs-primary-500) 0%, var(--cs-primary-600) 100%);
  color: white;
  box-shadow: var(--cs-shadow-md), 0 0 0 0 rgba(168, 85, 247, 0);
}

.cs-btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--cs-primary-400) 0%, var(--cs-primary-500) 100%);
  box-shadow: var(--cs-shadow-lg), var(--cs-shadow-glow);
  transform: translateY(-1px);
}

.cs-btn-secondary {
  background: var(--cs-bg-card);
  color: var(--cs-text-primary);
  border: 1px solid var(--cs-border-default);
}

.cs-btn-secondary:hover:not(:disabled) {
  background: var(--cs-bg-card-hover);
  border-color: var(--cs-border-hover);
}

.cs-btn-ghost {
  background: transparent;
  color: var(--cs-text-secondary);
}

.cs-btn-ghost:hover:not(:disabled) {
  background: var(--cs-bg-card);
  color: var(--cs-text-primary);
}

.cs-btn-danger {
  background: linear-gradient(135deg, var(--cs-danger) 0%, #dc2626 100%);
  color: white;
}

.cs-btn-danger:hover:not(:disabled) {
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.4);
}

.cs-btn-accent {
  background: var(--cs-gradient-accent);
  color: white;
}

.cs-btn-sm {
  padding: var(--cs-space-2) var(--cs-space-3);
  font-size: var(--cs-text-xs);
}

.cs-btn-lg {
  padding: var(--cs-space-4) var(--cs-space-8);
  font-size: var(--cs-text-base);
}


/* ---------- Inputs ---------- */
.cs-input {
  width: 100%;
  padding: var(--cs-space-3) var(--cs-space-4);
  font-size: var(--cs-text-sm);
  color: var(--cs-text-primary);
  background: var(--cs-bg-input);
  border: 1px solid var(--cs-border-subtle);
  border-radius: var(--cs-radius-lg);
  transition: all var(--cs-transition-base);
}

.cs-input:focus {
  outline: none;
  background: var(--cs-bg-input-focus);
  border-color: var(--cs-primary-500);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
}

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

.cs-input-error {
  border-color: var(--cs-danger);
}

.cs-input-error:focus {
  border-color: var(--cs-danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.cs-label {
  display: block;
  margin-bottom: var(--cs-space-2);
  font-size: var(--cs-text-sm);
  font-weight: var(--cs-font-medium);
  color: var(--cs-text-secondary);
}


/* ---------- Badges ---------- */
.cs-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--cs-space-1) var(--cs-space-3);
  font-size: var(--cs-text-xs);
  font-weight: var(--cs-font-medium);
  border-radius: var(--cs-radius-full);
  background: var(--cs-bg-card);
  color: var(--cs-text-secondary);
  border: 1px solid var(--cs-border-subtle);
}

.cs-badge-primary {
  background: rgba(168, 85, 247, 0.15);
  color: var(--cs-primary-300);
  border-color: rgba(168, 85, 247, 0.3);
}

.cs-badge-success {
  background: rgba(34, 197, 94, 0.15);
  color: var(--cs-success-light);
  border-color: rgba(34, 197, 94, 0.3);
}

.cs-badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--cs-warning-light);
  border-color: rgba(245, 158, 11, 0.3);
}

.cs-badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--cs-danger-light);
  border-color: rgba(239, 68, 68, 0.3);
}

.cs-badge-info {
  background: rgba(59, 130, 246, 0.15);
  color: var(--cs-info-light);
  border-color: rgba(59, 130, 246, 0.3);
}

.cs-badge-accent {
  background: rgba(34, 211, 238, 0.15);
  color: var(--cs-accent-400);
  border-color: rgba(34, 211, 238, 0.3);
}


/* ---------- Navigation ---------- */
.cs-nav {
  display: flex;
  align-items: center;
  gap: var(--cs-space-1);
}

.cs-nav-item {
  display: flex;
  align-items: center;
  gap: var(--cs-space-2);
  padding: var(--cs-space-2) var(--cs-space-4);
  font-size: var(--cs-text-sm);
  font-weight: var(--cs-font-medium);
  color: var(--cs-text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--cs-radius-lg);
  cursor: pointer;
  transition: all var(--cs-transition-base);
  text-decoration: none;
}

.cs-nav-item:hover {
  color: var(--cs-text-primary);
  background: var(--cs-bg-card);
}

.cs-nav-item.active {
  color: var(--cs-primary-400);
  background: rgba(168, 85, 247, 0.1);
}


/* ---------- Sidebar Navigation ---------- */
.cs-sidebar {
  width: 260px;
  background: var(--cs-bg-elevated);
  border-right: 1px solid var(--cs-border-subtle);
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  display: flex;
  flex-direction: column;
  z-index: var(--cs-z-sticky);
}

.cs-sidebar-header {
  padding: var(--cs-space-6);
  border-bottom: 1px solid var(--cs-border-subtle);
}

.cs-sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--cs-space-4);
}

.cs-sidebar-section {
  margin-bottom: var(--cs-space-6);
}

.cs-sidebar-section-title {
  font-size: var(--cs-text-xs);
  font-weight: var(--cs-font-semibold);
  color: var(--cs-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--cs-space-2) var(--cs-space-3);
  margin-bottom: var(--cs-space-2);
}

.cs-sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--cs-space-3);
  padding: var(--cs-space-3) var(--cs-space-4);
  font-size: var(--cs-text-sm);
  color: var(--cs-text-secondary);
  border-radius: var(--cs-radius-lg);
  text-decoration: none;
  transition: all var(--cs-transition-base);
}

.cs-sidebar-link:hover {
  background: var(--cs-bg-card);
  color: var(--cs-text-primary);
}

.cs-sidebar-link.active {
  background: rgba(168, 85, 247, 0.15);
  color: var(--cs-primary-400);
  border-left: 3px solid var(--cs-primary-500);
}

.cs-sidebar-link svg,
.cs-sidebar-link .icon {
  width: 20px;
  height: 20px;
  opacity: 0.7;
}


/* ---------- Top Header ---------- */
.cs-header {
  height: 64px;
  background: var(--cs-bg-overlay);
  border-bottom: 1px solid var(--cs-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--cs-space-6);
  position: sticky;
  top: 0;
  z-index: var(--cs-z-sticky);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.cs-header-left {
  display: flex;
  align-items: center;
  gap: var(--cs-space-4);
}

.cs-header-right {
  display: flex;
  align-items: center;
  gap: var(--cs-space-3);
}


/* ---------- Progress Bars ---------- */
.cs-progress {
  height: 8px;
  background: var(--cs-bg-card);
  border-radius: var(--cs-radius-full);
  overflow: hidden;
}

.cs-progress-bar {
  height: 100%;
  border-radius: var(--cs-radius-full);
  transition: width var(--cs-transition-slow);
}

.cs-progress-bar-primary {
  background: linear-gradient(90deg, var(--cs-primary-600), var(--cs-primary-400));
}

.cs-progress-bar-success {
  background: linear-gradient(90deg, #16a34a, var(--cs-success));
}

.cs-progress-bar-accent {
  background: var(--cs-gradient-accent);
}


/* ---------- Stats/Metrics ---------- */
.cs-stat {
  display: flex;
  flex-direction: column;
  gap: var(--cs-space-1);
}

.cs-stat-value {
  font-size: var(--cs-text-3xl);
  font-weight: var(--cs-font-bold);
  color: var(--cs-text-primary);
  line-height: var(--cs-leading-tight);
}

.cs-stat-label {
  font-size: var(--cs-text-sm);
  color: var(--cs-text-muted);
}

.cs-stat-trend {
  display: inline-flex;
  align-items: center;
  gap: var(--cs-space-1);
  font-size: var(--cs-text-xs);
  font-weight: var(--cs-font-medium);
}

.cs-stat-trend-up {
  color: var(--cs-success);
}

.cs-stat-trend-down {
  color: var(--cs-danger);
}


/* ---------- Tables ---------- */
.cs-table {
  width: 100%;
  border-collapse: collapse;
}

.cs-table th {
  text-align: left;
  padding: var(--cs-space-3) var(--cs-space-4);
  font-size: var(--cs-text-xs);
  font-weight: var(--cs-font-semibold);
  color: var(--cs-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--cs-border-subtle);
}

.cs-table td {
  padding: var(--cs-space-4);
  font-size: var(--cs-text-sm);
  color: var(--cs-text-secondary);
  border-bottom: 1px solid var(--cs-border-subtle);
}

.cs-table tbody tr {
  transition: background var(--cs-transition-fast);
}

.cs-table tbody tr:hover {
  background: var(--cs-bg-card-hover);
}


/* ---------- Loading States ---------- */
.cs-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--cs-border-subtle);
  border-top-color: var(--cs-primary-500);
  border-radius: 50%;
  animation: cs-spin 0.8s linear infinite;
}

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

.cs-skeleton {
  background: linear-gradient(
    90deg,
    var(--cs-bg-card) 25%,
    var(--cs-bg-card-hover) 50%,
    var(--cs-bg-card) 75%
  );
  background-size: 200% 100%;
  animation: cs-shimmer 1.5s ease-in-out infinite;
  border-radius: var(--cs-radius-md);
}

@keyframes cs-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}


/* ---------- Toast Notifications ---------- */
.cs-toast-container {
  position: fixed;
  bottom: var(--cs-space-6);
  right: var(--cs-space-6);
  z-index: var(--cs-z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--cs-space-3);
}

.cs-toast {
  min-width: 300px;
  padding: var(--cs-space-4) var(--cs-space-5);
  background: var(--cs-bg-elevated);
  border: 1px solid var(--cs-border-default);
  border-radius: var(--cs-radius-lg);
  box-shadow: var(--cs-shadow-xl);
  animation: cs-toast-in 0.3s var(--cs-transition-spring);
}

@keyframes cs-toast-in {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}


/* ---------- Modal ---------- */
.cs-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  z-index: var(--cs-z-modal-backdrop);
  animation: cs-fade-in 0.2s ease-out;
}

.cs-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--cs-bg-elevated);
  border: 1px solid var(--cs-border-default);
  border-radius: var(--cs-radius-2xl);
  box-shadow: var(--cs-shadow-xl);
  z-index: var(--cs-z-modal);
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
  animation: cs-modal-in 0.3s var(--cs-transition-spring);
}

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

@keyframes cs-modal-in {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

.cs-modal-header {
  padding: var(--cs-space-6);
  border-bottom: 1px solid var(--cs-border-subtle);
}

.cs-modal-body {
  padding: var(--cs-space-6);
}

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


/* ---------- Tooltips ---------- */
.cs-tooltip {
  position: relative;
}

.cs-tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--cs-space-2) var(--cs-space-3);
  background: var(--cs-bg-overlay);
  color: var(--cs-text-primary);
  font-size: var(--cs-text-xs);
  border-radius: var(--cs-radius-md);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--cs-transition-fast);
  z-index: var(--cs-z-tooltip);
}

.cs-tooltip:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-4px);
}


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

/* Text Colors */
.cs-text-primary { color: var(--cs-text-primary); }
.cs-text-secondary { color: var(--cs-text-secondary); }
.cs-text-muted { color: var(--cs-text-muted); }
.cs-text-accent { color: var(--cs-accent-400); }
.cs-text-success { color: var(--cs-success); }
.cs-text-warning { color: var(--cs-warning); }
.cs-text-danger { color: var(--cs-danger); }

/* Background Colors */
.cs-bg-base { background: var(--cs-bg-base); }
.cs-bg-elevated { background: var(--cs-bg-elevated); }
.cs-bg-card { background: var(--cs-bg-card); }

/* Display */
.cs-flex { display: flex; }
.cs-inline-flex { display: inline-flex; }
.cs-grid { display: grid; }
.cs-hidden { display: none; }

/* Flex utilities */
.cs-items-center { align-items: center; }
.cs-justify-center { justify-content: center; }
.cs-justify-between { justify-content: space-between; }
.cs-gap-2 { gap: var(--cs-space-2); }
.cs-gap-3 { gap: var(--cs-space-3); }
.cs-gap-4 { gap: var(--cs-space-4); }
.cs-gap-6 { gap: var(--cs-space-6); }

/* Spacing */
.cs-p-4 { padding: var(--cs-space-4); }
.cs-p-6 { padding: var(--cs-space-6); }
.cs-px-4 { padding-left: var(--cs-space-4); padding-right: var(--cs-space-4); }
.cs-py-2 { padding-top: var(--cs-space-2); padding-bottom: var(--cs-space-2); }
.cs-mt-4 { margin-top: var(--cs-space-4); }
.cs-mb-4 { margin-bottom: var(--cs-space-4); }

/* Border Radius */
.cs-rounded { border-radius: var(--cs-radius-md); }
.cs-rounded-lg { border-radius: var(--cs-radius-lg); }
.cs-rounded-xl { border-radius: var(--cs-radius-xl); }
.cs-rounded-full { border-radius: var(--cs-radius-full); }

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

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

/* Focus Ring */
.cs-focus-ring:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.4);
}

/* Scrollbar */
.cs-scrollbar::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.cs-scrollbar::-webkit-scrollbar-track {
  background: transparent;
}

.cs-scrollbar::-webkit-scrollbar-thumb {
  background: var(--cs-border-default);
  border-radius: var(--cs-radius-full);
}

.cs-scrollbar::-webkit-scrollbar-thumb:hover {
  background: var(--cs-border-hover);
}


/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

@media (max-width: 768px) {
  .cs-sidebar {
    transform: translateX(-100%);
    transition: transform var(--cs-transition-base);
  }
  
  .cs-sidebar.open {
    transform: translateX(0);
  }
  
  .cs-hide-mobile {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .cs-hide-desktop {
    display: none !important;
  }
}