:root {
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-500-rgb: 33, 128, 141;
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-500: rgba(168, 75, 47, 1);
  --color-bg-1: rgba(59, 130, 246, 0.08);
  --color-bg-2: rgba(245, 158, 11, 0.08);
  --color-bg-3: rgba(34, 197, 94, 0.08);
  --color-bg-4: rgba(239, 68, 68, 0.08);
  --color-bg-5: rgba(147, 51, 234, 0.08);
  --color-bg-6: rgba(249, 115, 22, 0.08);
  --color-bg-7: rgba(236, 72, 153, 0.08);
  --color-bg-8: rgba(6, 182, 212, 0.08);
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --focus-outline: 2px solid var(--color-primary);
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
  --radius-sm: 6px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-1: rgba(29, 78, 216, 0.15);
    --color-bg-2: rgba(180, 83, 9, 0.15);
    --color-bg-3: rgba(21, 128, 61, 0.15);
    --color-bg-4: rgba(185, 28, 28, 0.15);
    --color-bg-5: rgba(107, 33, 168, 0.15);
    --color-bg-6: rgba(194, 65, 12, 0.15);
    --color-bg-7: rgba(190, 24, 93, 0.15);
    --color-bg-8: rgba(8, 145, 178, 0.15);
    --color-background: rgb(26, 26, 26);
    --color-surface: rgba(38, 40, 40, 1);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(167, 169, 169, 0.7);
    --color-primary: rgba(50, 184, 198, 1);
    --color-primary-hover: rgba(45, 166, 178, 1);
    --color-primary-active: rgba(41, 150, 161, 1);
    --color-secondary: rgba(119, 124, 124, 0.15);
    --color-secondary-hover: rgba(119, 124, 124, 0.25);
    --color-border: rgba(119, 124, 124, 0.3);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(119, 124, 124, 0.2);
    --color-card-border-inner: rgba(119, 124, 124, 0.15);
    --color-focus-ring: rgba(50, 184, 198, 0.4);
  }
}

[data-color-scheme="dark"] {
  --color-bg-1: rgba(29, 78, 216, 0.15);
  --color-bg-2: rgba(180, 83, 9, 0.15);
  --color-bg-3: rgba(21, 128, 61, 0.15);
  --color-bg-4: rgba(185, 28, 28, 0.15);
  --color-bg-5: rgba(107, 33, 168, 0.15);
  --color-bg-6: rgba(194, 65, 12, 0.15);
  --color-bg-7: rgba(190, 24, 93, 0.15);
  --color-bg-8: rgba(8, 145, 178, 0.15);
  --color-background: rgb(26, 26, 26);
  --color-surface: rgba(38, 40, 40, 1);
  --color-text: var(--color-gray-200);
  --color-text-secondary: rgba(167, 169, 169, 0.7);
  --color-primary: rgba(50, 184, 198, 1);
  --color-primary-hover: rgba(45, 166, 178, 1);
  --color-primary-active: rgba(41, 150, 161, 1);
  --color-secondary: rgba(119, 124, 124, 0.15);
  --color-secondary-hover: rgba(119, 124, 124, 0.25);
  --color-border: rgba(119, 124, 124, 0.3);
  --color-btn-primary-text: var(--color-slate-900);
  --color-card-border: rgba(119, 124, 124, 0.2);
  --color-card-border-inner: rgba(119, 124, 124, 0.15);
  --color-focus-ring: rgba(50, 184, 198, 0.4);
}

[data-color-scheme="light"] {
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
}

html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}
h5 {
  font-size: var(--font-size-lg);
}
h6 {
  font-size: var(--font-size-sm);
}

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-normal) var(--ease-standard);
}

a:hover {
  color: var(--color-primary-hover);
}

.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding: var(--space-32) var(--space-16);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}
@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}
@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
  }
}
@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

/* Header */
.header {
  text-align: center;
  margin-bottom: var(--space-32);
}

.header__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-8);
  letter-spacing: var(--letter-spacing-tight);
}

.header__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin: 0;
}

/* Navigation des filtres */
.filter-nav {
  margin-bottom: var(--space-32);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.filter-nav__wrapper {
  display: flex;
  gap: var(--space-8);
  padding: var(--space-4);
  min-width: max-content;
  justify-content: center;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-12) var(--space-16);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  white-space: nowrap;
  flex-shrink: 0;
}

.filter-btn:hover {
  background: var(--color-secondary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.filter-btn--active {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border-color: var(--color-primary);
}

.filter-btn--active:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.filter-btn__count {
  background: rgba(255, 255, 255, 0.2);
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  min-width: 20px;
  text-align: center;
}

.filter-btn--active .filter-btn__count {
  background: rgba(255, 255, 255, 0.3);
}

/* Grille de portfolio */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: var(--space-24);
  margin-bottom: var(--space-32);
}

/* Carte de projet */
.project-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-standard);
  opacity: 0;
  transform: translateY(20px);
  animation: slideInUp var(--duration-normal) var(--ease-standard) forwards;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.project-card__image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  overflow: hidden;
  background: var(--color-bg-1);
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-normal) var(--ease-standard);
}

.project-card:hover .project-card__image img {
  transform: scale(1.05);
}

.project-card__category {
  position: absolute;
  top: var(--space-12);
  right: var(--space-12);
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
}

.project-card__content {
  padding: var(--space-20);
}

.project-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-8);
  line-height: var(--line-height-tight);
}

.project-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-12);
  line-height: var(--line-height-normal);
}

.project-card__client {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.project-card__client::before {
  content: "";
  width: 4px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 50%;
}

/* États de chargement et vide */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-32);
  color: var(--color-text-secondary);
}

.loading__spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-secondary);
  border-top: 3px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--space-16);
}
.scroll-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: #222;
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 1000;
}
.scroll-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}
.empty-state {
  text-align: center;
  padding: var(--space-32);
  color: var(--color-text-secondary);
}

.empty-state h3 {
  margin-bottom: var(--space-8);
  color: var(--color-text);
}

.hidden {
  display: none !important;
}
/* Animations */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Animation staggered pour les cartes */
.project-card:nth-child(1) { animation-delay: 0ms; }
.project-card:nth-child(2) { animation-delay: 50ms; }
.project-card:nth-child(3) { animation-delay: 100ms; }
.project-card:nth-child(4) { animation-delay: 150ms; }
.project-card:nth-child(5) { animation-delay: 200ms; }
.project-card:nth-child(6) { animation-delay: 250ms; }
.project-card:nth-child(7) { animation-delay: 300ms; }
.project-card:nth-child(8) { animation-delay: 350ms; }
.project-card:nth-child(9) { animation-delay: 400ms; }
.project-card:nth-child(10) { animation-delay: 450ms; }
.project-card:nth-child(11) { animation-delay: 500ms; }
.project-card:nth-child(12) { animation-delay: 550ms; }

/* Transitions de filtrage */
.project-card.fade-out {
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.3s ease-out;
}

.project-card.fade-in {
  opacity: 1;
  transform: translateY(0);
  transition: all 0.3s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: var(--space-24) var(--space-16);
  }
  .header__title {
    font-size: var(--font-size-3xl);
  }
  .filter-nav {
    margin-left: calc(var(--space-16) * -1);
    margin-right: calc(var(--space-16) * -1);
    padding-left: var(--space-16);
    padding-right: var(--space-16);
  }
  .portfolio-grid {
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--space-16);
  }
  .project-card__image {
    height: 180px;
  }
  .project-card__content {
    padding: var(--space-16);
  }
}

@media (max-width: 480px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  .filter-btn {
    padding: var(--space-10) var(--space-12);
    font-size: var(--font-size-xs);
  }
  .project-card__image {
    height: 160px;
  }
}

/* Amélioration de l'accessibilité */
@media (prefers-reduced-motion: reduce) {
  .project-card,
  .filter-btn,
  .loading__spinner {
    animation: none;
    transition: none;
  }
  .project-card:hover {
    transform: none;
  }
}

/* Focus visible pour l'accessibilité */
.filter-btn:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* Indicateur de catégorie spécialisé */
.project-card__category--miniatures { background: var(--color-bg-2); color: var(--color-text);}
.project-card__category--emotes { background: var(--color-bg-3); color: var(--color-text);}
.project-card__category--badges { background: var(--color-bg-4); color: var(--color-text);}
.project-card__category--overlays { background: var(--color-bg-5); color: var(--color-text);}
.project-card__category--panneaux { background: var(--color-bg-6); color: var(--color-text);}
.project-card__category--identite { background: var(--color-bg-7); color: var(--color-text);}
.project-card__category--visuels { background: var(--color-bg-8); color: var(--color-text);}
.project-card__category--photos { background: var(--color-bg-1); color: var(--color-text);}

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2') format('woff2');
}