/**
 * ZaynERP Design System
 * Modern, minimalist design system matching zaynsystems.com
 * 
 * This file contains:
 * - CSS custom properties (variables) for colors, typography, spacing, shadows, transitions
 * - Base component classes for cards, buttons, forms, badges
 * - Responsive utilities and layout helpers
 */

/* ============================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================ */

:root {
  /* Colors - Based on zaynsystems.com */
  --primary-color: #667eea;
  --primary-dark: #5568d3;
  --primary-light: #7c8ef0;
  --secondary-color: #764ba2;
  --accent-color: #ffc107;
  
  /* Semantic Colors */
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --info-color: #17a2b8;
  
  /* Neutral Colors */
  --text-primary: #2d3748;      /* Contrast ratio: 12.6:1 on white (WCAG AAA) */
  --text-secondary: #4a5568;    /* Contrast ratio: 8.3:1 on white (WCAG AAA) */
  --text-muted: #718096;        /* Contrast ratio: 4.7:1 on white (WCAG AA) */
  --border-color: #e2e8f0;
  --background-light: #f7fafc;
  --background-white: #ffffff;
  
  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 0.5rem;   /* 8px */
  --spacing-sm: 1rem;     /* 16px */
  --spacing-md: 1.5rem;   /* 24px */
  --spacing-lg: 2rem;     /* 32px */
  --spacing-xl: 2.5rem;   /* 40px */
  --spacing-2xl: 3rem;    /* 48px */
  --spacing-3xl: 4rem;    /* 64px */
  --spacing-4xl: 5rem;    /* 80px */
  --spacing-5xl: 6.25rem; /* 100px */
  
  /* Border Radius */
  --radius-sm: 0.375rem;  /* 6px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* ============================================
   CARD COMPONENT
   ============================================ */

.ds-card {
  background: var(--background-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);
}

.ds-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.ds-card-header {
  margin-bottom: var(--spacing-md);
}

.ds-card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.ds-card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.ds-card-body {
  color: var(--text-secondary);
  line-height: 1.6;
}

.ds-card-footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

/* ============================================
   BUTTON COMPONENT
   ============================================ */

.ds-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  gap: var(--spacing-xs);
  font-family: var(--font-primary);
}

.ds-btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
}

.ds-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  opacity: 0.9;
}

.ds-btn-secondary {
  background: var(--background-white);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.ds-btn-secondary:hover {
  background: var(--primary-color);
  color: white;
}

.ds-btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.ds-btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
}

/* ============================================
   FORM COMPONENT
   ============================================ */

.ds-form-group {
  margin-bottom: var(--spacing-lg);
}

.ds-form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.ds-form-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  background: var(--background-white);
  font-family: var(--font-primary);
}

.ds-form-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

.ds-form-help {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: var(--spacing-xs);
}

.ds-form-error {
  font-size: var(--font-size-sm);
  color: var(--danger-color);
  margin-top: var(--spacing-xs);
}

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

.ds-form-input-error:focus {
  border-color: var(--danger-color);
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

/* ============================================
   BADGE COMPONENT
   ============================================ */

.ds-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ds-badge-success {
  background: rgba(40, 167, 69, 0.1);
  color: var(--success-color);
}

.ds-badge-warning {
  background: rgba(255, 193, 7, 0.1);
  color: var(--warning-color);
}

.ds-badge-danger {
  background: rgba(220, 53, 69, 0.1);
  color: var(--danger-color);
}

.ds-badge-info {
  background: rgba(23, 162, 184, 0.1);
  color: var(--info-color);
}

/* ============================================
   HERO SECTION COMPONENT
   ============================================ */

.ds-hero {
  display: grid;
  grid-template-columns: 1fr; /* Mobile-first: start with single column */
  gap: var(--spacing-2xl);
  align-items: center;
  padding: var(--spacing-3xl) var(--spacing-md);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
}

.ds-hero-content {
  max-width: 100%;
}

.ds-hero-title {
  font-size: var(--font-size-3xl); /* Mobile-first: start with smaller size */
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.ds-hero-subtitle {
  font-size: var(--font-size-lg); /* Mobile-first: start with smaller size */
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.ds-hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.ds-hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

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

/* Tablet and above (min-width: mobile-first approach) */
@media (min-width: 768px) {
  .ds-hero-title {
    font-size: var(--font-size-xl);
  }
  
  .ds-hero-subtitle {
    font-size: var(--font-size-xl);
  }
}

/* Desktop and above (min-width: mobile-first approach) */
@media (min-width: 1024px) {
  .ds-hero {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    padding: var(--spacing-5xl) var(--spacing-lg);
  }
  
  .ds-hero-title {
    font-size: var(--font-size-5xl);
  }
  
  .ds-hero-subtitle {
    font-size: var(--font-size-xl);
  }
}

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

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

/* Grid layouts - mobile-first: start with single column */
.ds-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.ds-grid-2 {
  grid-template-columns: 1fr; /* Mobile: single column */
}

.ds-grid-3 {
  grid-template-columns: 1fr; /* Mobile: single column */
}

.ds-grid-4 {
  grid-template-columns: 1fr; /* Mobile: single column */
}

/* Tablet and above: 2 columns for grid-3 and grid-4 */
@media (min-width: 768px) {
  .ds-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .ds-grid-3,
  .ds-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop and above: full columns */
@media (min-width: 1024px) {
  .ds-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .ds-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

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

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

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

/* Text utilities */
.ds-text-primary { color: var(--text-primary); }
.ds-text-secondary { color: var(--text-secondary); }
.ds-text-muted { color: var(--text-muted); }

.ds-text-center { text-align: center; }
.ds-text-left { text-align: left; }
.ds-text-right { text-align: right; }

/* Empty state component */
.ds-empty-state {
  text-align: center;
  padding: var(--spacing-4xl) var(--spacing-lg);
}

.ds-empty-state img {
  max-width: 300px;
  margin-bottom: var(--spacing-lg);
}

.ds-empty-state-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.ds-empty-state-text {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   PRICING SECTION COMPONENT
   ============================================ */

.ds-pricing-section {
  padding: var(--spacing-3xl) 0; /* Mobile-first: start with smaller padding */
  background: var(--background-light);
}

.ds-section-title {
  font-size: var(--font-size-3xl); /* Mobile-first: start with smaller size */
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.ds-section-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.ds-pricing-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.ds-pricing-card .ds-card-body {
  flex: 1;
}

.ds-pricing-amount {
  display: flex;
  align-items: baseline;
  margin-top: var(--spacing-md);
  gap: 0.25rem;
}

.ds-pricing-currency {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--primary-color);
}

.ds-pricing-value {
  font-size: var(--font-size-4xl); /* Mobile-first: start with smaller size */
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  line-height: 1;
}

.ds-pricing-period {
  font-size: var(--font-size-base);
  color: var(--text-muted);
  font-weight: var(--font-weight-normal);
}

.ds-pricing-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  min-height: 3em;
}

.ds-pricing-features {
  margin-top: var(--spacing-md);
}

.ds-pricing-features-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ds-pricing-features-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.ds-pricing-features-list li {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  position: relative;
  padding-left: var(--spacing-lg);
}

.ds-pricing-features-list li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success-color);
  font-weight: var(--font-weight-bold);
}

/* Pricing card hover enhancement */
.ds-pricing-card:hover {
  border-color: var(--primary-color);
}

/* Desktop and above: larger sizes */
@media (min-width: 1024px) {
  .ds-pricing-section {
    padding: var(--spacing-5xl) 0;
  }
  
  .ds-section-title {
    font-size: var(--font-size-4xl);
  }
  
  .ds-pricing-value {
    font-size: var(--font-size-5xl);
  }
}

/* ============================================
   TRIAL BANNER COMPONENT
   ============================================ */

.ds-trial-banner {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: var(--spacing-2xl) var(--spacing-md); /* Mobile-first: start with smaller padding */
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-3xl);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.ds-trial-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  pointer-events: none;
}

.ds-trial-badge {
  display: inline-block;
  background: var(--accent-color);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
  box-shadow: 0 4px 10px rgba(255, 193, 7, 0.3);
  position: relative;
  z-index: 1;
}

.ds-trial-badge i {
  margin-right: var(--spacing-xs);
}

.ds-trial-title {
  color: white;
  font-size: var(--font-size-3xl); /* Mobile-first: start with smaller size */
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
  line-height: 1.2;
}

.ds-trial-subtitle {
  color: rgba(255, 255, 255, 0.95);
  font-size: var(--font-size-base); /* Mobile-first: start with smaller size */
  position: relative;
  z-index: 1;
  line-height: 1.6;
  margin-bottom: 0;
}

.ds-trial-note {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--font-size-sm);
  display: block;
  margin-top: var(--spacing-sm);
}

/* Desktop and above: larger sizes */
@media (min-width: 1024px) {
  .ds-trial-banner {
    padding: var(--spacing-3xl) var(--spacing-lg);
  }
  
  .ds-trial-title {
    font-size: var(--font-size-4xl);
  }
  
  .ds-trial-subtitle {
    font-size: var(--font-size-lg);
  }
}

/* ============================================
   ACCESSIBILITY - KEYBOARD FOCUS INDICATORS
   ============================================ */

/* Focus styles for all interactive elements */
.ds-btn:focus,
.ds-btn:focus-visible {
  outline: 3px solid var(--primary-color);
  outline-offset: 2px;
}

.ds-form-input:focus,
.ds-form-input:focus-visible {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.ds-card:focus,
.ds-card:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Focus styles for links - scoped to design system contexts */
.ds-hero a:focus,
.ds-hero a:focus-visible,
.ds-card a:focus,
.ds-card a:focus-visible,
a.ds-btn:focus,
a.ds-btn:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Focus styles for custom interactive elements - scoped */
.ds-hero [role="button"]:focus,
.ds-hero [role="button"]:focus-visible,
.ds-card [role="button"]:focus,
.ds-card [role="button"]:focus-visible,
.ds-container [role="button"]:focus,
.ds-container [role="button"]:focus-visible,
.ds-hero [tabindex]:focus,
.ds-hero [tabindex]:focus-visible,
.ds-card [tabindex]:focus,
.ds-card [tabindex]:focus-visible,
.ds-container [tabindex]:focus,
.ds-container [tabindex]:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Remove default focus outline only when using focus-visible - scoped */
.ds-btn:focus:not(:focus-visible),
.ds-form-input:focus:not(:focus-visible),
.ds-hero a:focus:not(:focus-visible),
.ds-card a:focus:not(:focus-visible),
a.ds-btn:focus:not(:focus-visible) {
  outline: none;
}

/* Ensure focus is visible for keyboard navigation - scoped to design system */
.ds-hero *:focus-visible,
.ds-card *:focus-visible,
.ds-container *:focus-visible,
.ds-grid *:focus-visible,
.ds-pricing-section *:focus-visible,
.ds-trial-banner *:focus-visible,
.ds-empty-state *:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ============================================
   ACCESSIBILITY - TOUCH TARGET SIZING
   ============================================ */

/* Ensure minimum touch target size on mobile - scoped to design system */
@media (max-width: 768px) {
  .ds-btn,
  a.ds-btn,
  .ds-hero button,
  .ds-card button,
  .ds-container button,
  .ds-grid button {
    min-height: 44px;
    min-width: 44px;
  }
  
  .ds-form-input,
  .ds-form-group select,
  .ds-form-group textarea {
    min-height: 44px;
  }
  
  /* Ensure clickable areas are large enough - scoped */
  .ds-hero [role="button"],
  .ds-card [role="button"],
  .ds-container [role="button"],
  .ds-hero [onclick],
  .ds-card [onclick],
  .ds-container [onclick],
  .ds-hero [tabindex],
  .ds-card [tabindex],
  .ds-container [tabindex] {
    min-height: 44px;
    min-width: 44px;
  }
}

/* ============================================
   ACCESSIBILITY - REDUCED MOTION
   ============================================ */

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .ds-card:hover,
  .ds-btn:hover {
    transform: none;
  }
}

/* ============================================
   ACCESSIBILITY - SCREEN READER ONLY
   ============================================ */

/* Visually hidden but accessible to screen readers */
.ds-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;
}

/* Skip to main content link */
.ds-skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  z-index: var(--z-tooltip);
  border-radius: var(--radius-md);
}

.ds-skip-link:focus {
  top: var(--spacing-sm);
  left: var(--spacing-sm);
}

/* ============================================
   IMAGE OPTIMIZATION AND LAZY LOADING
   ============================================ */

/* Responsive images - scoped to design system contexts */
.ds-hero img,
.ds-card img,
.ds-image-container img,
.ds-empty-state img {
  max-width: 100%;
  height: auto;
}

/* Lazy loading images - scoped to design system contexts */
.ds-hero img[loading="lazy"],
.ds-card img[loading="lazy"],
.ds-image-container img[loading="lazy"] {
  opacity: 0;
  transition: opacity var(--transition-base);
}

.ds-hero img[loading="lazy"].loaded,
.ds-card img[loading="lazy"].loaded,
.ds-image-container img[loading="lazy"].loaded {
  opacity: 1;
}

/* Image placeholder while loading */
.ds-image-placeholder {
  background: var(--background-light);
  display: inline-block;
  position: relative;
  overflow: hidden;
}

.ds-image-placeholder::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  to {
    left: 100%;
  }
}

/* Responsive image containers */
.ds-image-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.ds-image-container img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Image aspect ratios */
.ds-image-16-9 {
  aspect-ratio: 16 / 9;
}

.ds-image-4-3 {
  aspect-ratio: 4 / 3;
}

.ds-image-1-1 {
  aspect-ratio: 1 / 1;
}

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

/* Fade-in animation on scroll */
.ds-fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.ds-fade-in.ds-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animation delays for multiple elements */
.ds-fade-in:nth-child(1) { transition-delay: 0ms; }
.ds-fade-in:nth-child(2) { transition-delay: 100ms; }
.ds-fade-in:nth-child(3) { transition-delay: 200ms; }
.ds-fade-in:nth-child(4) { transition-delay: 300ms; }
.ds-fade-in:nth-child(5) { transition-delay: 400ms; }
.ds-fade-in:nth-child(6) { transition-delay: 500ms; }

/* Slide-in from left */
.ds-slide-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.ds-slide-in-left.ds-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Slide-in from right */
.ds-slide-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.ds-slide-in-right.ds-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Scale-in animation */
.ds-scale-in {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.ds-scale-in.ds-visible {
  opacity: 1;
  transform: scale(1);
}