.btn{border-radius:var(--radius-full);transition:all var(--transition-fast);justify-content:center;align-items:center;font-weight:500;display:inline-flex;position:relative;overflow:hidden}.btn:disabled{opacity:.7;cursor:not-allowed}.btn-primary{background-color:var(--color-primary);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover:not(:disabled){box-shadow:var(--shadow-lg);background-color:#082d22;transform:translateY(-1px)}.btn-secondary{background-color:var(--color-accent);color:var(--color-primary);box-shadow:var(--shadow-md)}.btn-secondary:hover:not(:disabled){box-shadow:var(--shadow-lg);background-color:#e0b429;transform:translateY(-1px)}.btn-outline{color:var(--color-primary);border:1px solid var(--color-primary);background-color:#0000}.btn-outline:hover:not(:disabled){background-color:#0b3d2e0d}.btn-ghost{color:var(--color-primary);background-color:#0000}.btn-ghost:hover:not(:disabled){background-color:#0b3d2e0d}.btn-sm{padding:.5rem 1rem;font-size:.875rem}.btn-md{padding:.75rem 1.5rem;font-size:1rem}.btn-lg{padding:1rem 2rem;font-size:1.125rem}.spinner{border:2px solid;border-right-color:#0000;border-radius:50%;width:1.2em;height:1.2em;animation:.75s linear infinite spin;position:absolute}.opacity-0{opacity:0}@keyframes spin{to{transform:rotate(360deg)}}