.error-screen,.loading-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;background-color:var(--color-bg);font-family:var(--font-heading);text-align:center;padding:24px}.loader-comic{display:flex;flex-direction:column;align-items:center;gap:20px;font-size:1.5rem;color:var(--color-border-dark)}.loader-spinner{width:50px;height:50px;border-top:5px solid var(--color-bg-alt);border:5px solid var(--color-bg-alt);border-top-color:var(--color-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.error-card{background:#fff;border:4px solid var(--color-border-dark);border-radius:var(--radius-comic);padding:40px;max-width:400px;box-shadow:var(--shadow-comic-lg);display:flex;flex-direction:column;align-items:center;gap:20px}.error-card h2{font-size:2.5rem;color:var(--color-primary)}.error-card p{font-family:var(--font-body);font-size:1.1rem}.header-section .btn-achat-img{max-width:310px;width:100%}