:root{--primary-color:#4a6bff;--secondary-color:#ff6b6b;--tertiary-color:#3b56cd;--background-color:#fff;--text-color:#333;--light-gray:#f5f5f5;--gray:#6c757d;--dark-gray:#4b5563;--border-color:#ccc;--white:#fff;--black:#000;--hover-primary-color:#4665f2;--gradient-end-color:#eaf0ff;--footer-bg-color:#f8f9fa;--coin-gold:gold;--coin-orange:orange;--semi-transparent-white:#fff3;--disabled-color:#9ca3af;--disabled-text-color:#6b7280;--article-meta-color:#6c6c6c;--spinner-accent-color:#4a6bff4d;--shadow-color:#0000001a;--text-shadow-color:#00000040;--focus-shadow-color:#4a6bff33;--hover-shadow-color:#00000026;--active-shadow-color:#0000001a;--border-radius:14px;--rounded-border-radius:20px;--box-shadow:0 4px 6px var(--shadow-color);--container-max-width:800px;--footer-background:#f8f9fa;--footer-heading-color:#2c3e50;--footer-link-color:#4a5568;--footer-link-hover-color:#2b6cb0;--footer-text-color:#718096;--footer-border-color:#e2e8f0}.coin{cursor:pointer;height:150px;position:relative;transform-style:preserve-3d;transition:transform .2s ease;width:150px}.coin.flipping{animation:flip 1s ease-in-out}.coin .heads,.coin .tails{align-items:center;backface-visibility:hidden;background:linear-gradient(45deg,var(--coin-gold),var(--coin-orange));border-radius:50%;box-shadow:0 0 10px var(--shadow-color);display:flex;font-size:1.5rem;font-weight:700;height:100%;justify-content:center;position:absolute;width:100%}.coin .tails{transform:rotateY(180deg)}@keyframes flip{0%{transform:rotateY(0)}to{transform:rotateY(5turn)}}.coin-caption{color:#444;font-size:1.05rem;margin-bottom:1.25rem;margin-top:1rem;text-align:center}