/* Modern CSS Enhancements for Portfolio */

/* CSS Custom Properties for Theming */
:root {
  /* Color System */
  --primary-color: #1e40af;
  --primary-light: #3b82f6;
  --primary-dark: #1e3a8a;
  --secondary-color: #10b981;
  --accent-color: #f59e0b;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --success-color: #10b981;
  
  /* Neutral Colors */
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --border-color: #e5e7eb;
  
  /* Dark Theme Colors */
  --dark-text-primary: #f9fafb;
  --dark-text-secondary: #d1d5db;
  --dark-text-muted: #9ca3af;
  --dark-bg-primary: #111827;
  --dark-bg-secondary: #1f2937;
  --dark-bg-tertiary: #374151;
  --dark-border-color: #4b5563;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Spacing */
  --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: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* 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;
  --z-toast: 1080;
}

/* Dark Theme */
[data-theme="dark"] {
  --text-primary: var(--dark-text-primary);
  --text-secondary: var(--dark-text-secondary);
  --text-muted: var(--dark-text-muted);
  --bg-primary: var(--dark-bg-primary);
  --bg-secondary: var(--dark-bg-secondary);
  --bg-tertiary: var(--dark-bg-tertiary);
  --border-color: var(--dark-border-color);
}

/* Modern Container Queries */
@container (min-width: 640px) {
  .container-responsive {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

@container (min-width: 1024px) {
  .container-responsive {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Modern CSS Grid Layouts */
.grid-modern {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: var(--space-6);
  container-type: inline-size;
}

.grid-masonry {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  grid-auto-rows: 0;
  grid-auto-flow: dense;
  gap: var(--space-4);
}

/* Modern Flexbox with Logical Properties */
.flex-modern {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .flex-modern {
    flex-direction: row;
    align-items: center;
  }
}

/* Modern Aspect Ratio */
.aspect-video {
  aspect-ratio: 16 / 9;
}

.aspect-square {
  aspect-ratio: 1 / 1;
}

.aspect-portrait {
  aspect-ratio: 3 / 4;
}

/* Modern Backdrop Filters */
.glass-effect {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-lg);
}

.glass-effect-dark {
  background: rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Modern Gradients */
.gradient-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.gradient-secondary {
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
}

.gradient-animated {
  background: linear-gradient(-45deg, var(--primary-color), var(--secondary-color), var(--accent-color), var(--primary-light));
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Modern Animations with CSS Custom Properties */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Modern Animation Classes */
.animate-fade-in-up {
  animation: fadeInUp var(--transition-slow) ease-out;
}

.animate-fade-in-scale {
  animation: fadeInScale var(--transition-normal) ease-out;
}

.animate-slide-in-right {
  animation: slideInRight var(--transition-normal) ease-out;
}

/* Modern Hover Effects */
.hover-lift {
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.hover-glow {
  transition: box-shadow var(--transition-normal);
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
}

/* Modern Focus States */
.focus-ring {
  outline: 2px solid transparent;
  outline-offset: 2px;
  transition: outline-color var(--transition-fast);
}

.focus-ring:focus-visible {
  outline-color: var(--primary-color);
}

/* Modern Loading States */
.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Modern Scrollbar */
.custom-scrollbar {
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.custom-scrollbar::-webkit-scrollbar {
  width: 6px;
}

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

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

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-muted);
}

/* Modern Text Selection */
::selection {
  background-color: var(--primary-color);
  color: white;
}

/* Modern Print Styles */
@media print {
  .no-print {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .container {
    max-width: none !important;
    margin: 0 !important;
    padding: 0 !important;
  }
}

/* Modern Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Modern High Contrast Support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000000;
    --text-primary: #000000;
    --bg-primary: #ffffff;
  }
}

/* Modern Container Query Components */
.card-container {
  container-type: inline-size;
}

@container (min-width: 400px) {
  .card-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-4);
  }
}

/* Modern Logical Properties */
.text-start {
  text-align: start;
}

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

.margin-inline-start {
  margin-inline-start: var(--space-4);
}

.margin-inline-end {
  margin-inline-end: var(--space-4);
}

.padding-inline {
  padding-inline: var(--space-4);
}

.padding-block {
  padding-block: var(--space-4);
}

/* Modern CSS Subgrid (Future) */
.grid-with-subgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
}

.grid-item {
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 3;
}

/* Modern CSS Container Queries for Components */
.component-container {
  container-type: inline-size;
}

@container (min-width: 300px) {
  .component-layout {
    display: flex;
    gap: var(--space-4);
  }
}

@container (min-width: 600px) {
  .component-layout {
    flex-direction: column;
  }
}

/* Modern CSS Logical Properties for RTL Support */
.rtl-support {
  margin-inline: var(--space-4);
  padding-inline: var(--space-4);
  border-inline-start: 2px solid var(--primary-color);
}

/* Modern CSS Custom Properties for Dynamic Theming */
.theme-toggle {
  --toggle-size: 24px;
  --toggle-bg: var(--bg-secondary);
  --toggle-fg: var(--text-primary);
  --toggle-border: var(--border-color);
}

/* Modern CSS Grid for Complex Layouts */
.layout-hero {
  display: grid;
  grid-template-areas: 
    "header header"
    "content image"
    "stats stats";
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto 1fr auto;
  gap: var(--space-8);
  min-height: 100vh;
}

.layout-hero > .hero-header {
  grid-area: header;
}

.layout-hero > .hero-content {
  grid-area: content;
}

.layout-hero > .hero-image {
  grid-area: image;
}

.layout-hero > .hero-stats {
  grid-area: stats;
}

@media (max-width: 768px) {
  .layout-hero {
    grid-template-areas: 
      "header"
      "content"
      "image"
      "stats";
    grid-template-columns: 1fr;
  }
}

/* Modern CSS for Performance */
.will-change-transform {
  will-change: transform;
}

.will-change-opacity {
  will-change: opacity;
}

.will-change-scroll {
  will-change: scroll-position;
}

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

/* Modern CSS for Responsive Images */
.responsive-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  object-position: center;
}

/* Modern CSS for Fluid Typography */
.fluid-text {
  font-size: clamp(1rem, 4vw, 2rem);
  line-height: 1.2;
}

.fluid-heading {
  font-size: clamp(1.5rem, 6vw, 3rem);
  line-height: 1.1;
}

/* Modern CSS for Aspect Ratio Boxes */
.aspect-ratio-box {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 */
}

.aspect-ratio-box > * {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}