:root{--color-bg: #fdfaf3;--color-surface: #ffffff;--color-text: #2f2a20;--color-primary: #d9822b;--color-primary-dark: #b5661a;--color-border: #e6ddc9;--color-success: #3f8f4f;--color-error: #c0392b;font-family:Segoe UI,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--color-bg);color:var(--color-text)}.app-content{max-width:900px;margin:0 auto;padding:1.5rem}.navbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.75rem;padding:1rem 1.5rem;background:var(--color-surface);border-bottom:1px solid var(--color-border)}.navbar-brand{font-weight:700;font-size:1.1rem;color:var(--color-primary-dark);text-decoration:none}.navbar-links{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.navbar-links a{color:var(--color-text);text-decoration:none}.navbar-user{font-style:italic;opacity:.8}button{cursor:pointer;background:var(--color-primary);color:#fff;border:none;border-radius:6px;padding:.5rem 1rem;font-size:1rem}button:hover{background:var(--color-primary-dark)}button:disabled{opacity:.6;cursor:default}.category-grid,.animal-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:1rem;margin-top:1rem}.category-tile,.animal-card{display:flex;flex-direction:column;align-items:center;gap:.4rem;padding:1rem;background:var(--color-surface);border:1px solid var(--color-border);border-radius:10px;text-decoration:none;color:var(--color-text);text-align:center}.category-tile-icon{font-size:2rem}.category-tile-progress{font-size:.85rem;opacity:.7}.animal-card img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:8px}.animal-card-badge{font-size:.75rem;color:var(--color-success)}.animal-card-seen{opacity:.85}.animal-profile{background:var(--color-surface);border:1px solid var(--color-border);border-radius:10px;padding:1.5rem}.animal-profile-image{display:block;max-width:100%;max-height:320px;margin:0 auto;object-fit:cover;border-radius:8px;cursor:pointer}.animal-profile-back{background:none;border:none;padding:0;margin-bottom:1rem;color:var(--color-accent, inherit);cursor:pointer;font:inherit}.image-lightbox-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;display:flex;align-items:center;justify-content:center;padding:2rem;z-index:1000}.image-lightbox-image{max-width:90vw;max-height:90vh;object-fit:contain;border-radius:8px;cursor:default}.image-lightbox-close{position:fixed;top:1rem;right:1.5rem;background:none;border:none;color:#fff;font-size:2.5rem;line-height:1;cursor:pointer;padding:.25rem .5rem}.animal-profile-scientific{font-style:italic;opacity:.75}.animal-profile-facts{display:grid;grid-template-columns:max-content 1fr;gap:.4rem 1rem;margin-top:1rem}.animal-profile-facts dt{font-weight:700}.animal-profile-facts dd{margin:0}.quiz-question{display:flex;flex-direction:column;align-items:center;gap:1rem}.quiz-question-image{max-width:100%;max-height:280px;object-fit:cover;border-radius:8px}.quiz-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.75rem;width:100%}@media (max-width: 480px){.quiz-options{grid-template-columns:1fr}}.quiz-next-button{display:block;width:100%;margin-top:1.5rem;padding:.75rem 1rem;background:var(--color-accent, #2b6cb0);color:#fff;border:none;border-radius:8px;font-weight:700;cursor:pointer}.quiz-option-correct{background:var(--color-success)!important}.quiz-option-wrong{background:var(--color-error)!important}.quiz-feedback{font-weight:700}.auth-page{max-width:360px;margin:2rem auto}.auth-page form{display:flex;flex-direction:column;gap:.75rem}.auth-page label{display:flex;flex-direction:column;gap:.25rem}.auth-page input{padding:.5rem;border:1px solid var(--color-border);border-radius:6px}.form-error{color:var(--color-error)}.progress-list{list-style:none;padding:0}.progress-list li{padding:.4rem 0;border-bottom:1px solid var(--color-border)}