.error-404 {text-align: center;padding: var(--espacement-xl) var(--espacement-sm);min-height: 60vh;display: flex;flex-direction: column;justify-content: center;align-items: center;}.error-404-title {display: flex;flex-direction: column;align-items: center;gap: var(--espacement-sm);margin: var(--espacement-md) 0;}.error-404-code {font-size: 8rem;font-weight: 700;color: var(--couleur-primaire);line-height: 1;text-shadow: 3px 3px 0 var(--couleur-secondaire);display: block;}.error-404-text {font-size: 2rem;color: var(--couleur-texte);font-weight: 600;}.error-404-message {font-size: 1.2rem;color: var(--couleur-texte-clair);max-width: 600px;margin: 0 auto var(--espacement-lg);line-height: 1.6;}.error-404-icon {font-size: 5rem;margin-bottom: var(--espacement-md);}@media (prefers-reduced-motion: no-preference) {.error-404-icon {animation: shake 2s ease-in-out infinite;}}@keyframes shake {0%, 100% {transform: rotate(0deg);}25% {transform: rotate(-10deg);}75% {transform: rotate(10deg);}}@media (prefers-reduced-motion: reduce) {.error-404-icon {animation: none;}}.error-404-suggestions {background-color: var(--couleur-fond-alt);padding: var(--espacement-lg);border-radius: 8px;max-width: 800px;margin: var(--espacement-lg) auto;}.error-404-suggestions h2 {text-align: center;color: var(--couleur-primaire);margin-bottom: var(--espacement-md);}.suggestions-grid {display: grid;grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));gap: var(--espacement-sm);margin-top: var(--espacement-md);}.suggestion-link {background-color: white;padding: var(--espacement-sm);border-radius: 4px;text-align: center;text-decoration: none;color: var(--couleur-primaire);font-weight: 500;transition: all var(--transition-normale);border: 2px solid transparent;min-height: 44px;display: flex;align-items: center;justify-content: center;gap: var(--espacement-xs);}.suggestion-link:hover, .suggestion-link:focus {border-color: var(--couleur-accent);transform: translateY(-2px);box-shadow: var(--ombre-moyenne);text-decoration: none;background-color: var(--couleur-fond-alt);}.help-list {line-height: 2;max-width: 600px;margin: 0 auto;text-align: left;}.help-list li {margin-bottom: var(--espacement-xs);}.help-list a {color: var(--couleur-accent);text-decoration: underline;font-weight: 500;}.help-list a:hover, .help-list a:focus {color: var(--couleur-primaire);}.error-404 .cta-buttons {display: flex;gap: var(--espacement-sm);justify-content: center;flex-wrap: wrap;margin-top: var(--espacement-md);}@media (max-width: 768px) {.error-404-code {font-size: 5rem;text-shadow: 2px 2px 0 var(--couleur-secondaire);}.error-404-text {font-size: 1.5rem;}.error-404-message {font-size: 1rem;}.suggestions-grid {grid-template-columns: 1fr;}.error-404-icon {font-size: 4rem;}}@media (max-width: 480px) {.error-404 {padding: var(--espacement-md) var(--espacement-sm);min-height: 50vh;}.error-404-code {font-size: 4rem;}.error-404-text {font-size: 1.25rem;}.error-404-icon {font-size: 3rem;}.error-404 .cta-buttons {flex-direction: column;width: 100%;}.error-404 .cta-buttons .btn {width: 100%;}}@media print {.error-404-icon {display: none;}.error-404-code {text-shadow: none;color: black;}.suggestions-grid {display: none;}}